#!/usr/bin/env python3
"""Generate Python documentation in HTML or text for interactive use.

In the Python interpreter, do "from pydoc import help" to provide online
help.  Calling help(thing) on a Python object documents the object.

Or, at the shell command line outside of Python:

Run "pydoc <name>" to show documentation on something.  <name> may be
the name of a function, module, package, or a dotted reference to a
class or function within a module or module in a package.  If the
argument contains a path segment delimiter (e.g. slash on Unix,
backslash on Windows) it is treated as the path to a Python source file.

Run "pydoc -k <keyword>" to search for a keyword in the synopsis lines
of all available modules.

Run "pydoc -p <port>" to start an HTTP server on the given port on the
local machine.  Port number 0 can be used to get an arbitrary unused port.

Run "pydoc -b" to start an HTTP server on an arbitrary unused port and
open a Web browser to interactively browse documentation.  The -p option
can be used with the -b option to explicitly specify the server port.

Run "pydoc -w <name>" to write out the HTML documentation for a module
to a file named "<name>.html".

Module docs for core modules are assumed to be in

    http://docs.python.org/X.Y/library/

This can be overridden by setting the PYTHONDOCS environment variable
to a different URL or to a local directory containing the Library
Reference Manual pages.
"""
__all__ = ['help']
__author__ = "Ka-Ping Yee <ping@lfw.org>"
__date__ = "26 February 2001"

__credits__ = """Guido van Rossum, for an excellent programming language.
Tommy Burnette, the original creator of manpy.
Paul Prescod, for all his work on onlinehelp.
Richard Chamberlain, for the first implementation of textdoc.
"""

# Known bugs that can't be fixed here:
#   - imp.load_module() cannot be prevented from clobbering existing
#     loaded modules, so calling synopsis() on a binary module file
#     changes the contents of any existing module with the same name.
#   - If the __file__ attribute on a module is a relative path and
#     the current directory is changed with os.chdir(), an incorrect
#     path will be displayed.

import builtins
import imp
import importlib.machinery
import inspect
import io
import os
import pkgutil
import platform
import re
import sys
import time
import tokenize
import warnings
from collections import deque
from reprlib import Repr
from traceback import extract_tb, format_exception_only


# --------------------------------------------------------- common routines

def pathdirs():
    """Convert sys.path into a list of absolute, existing, unique paths."""
    dirs = []
    normdirs = []
    for dir in sys.path:
        dir = os.path.abspath(dir or '.')
        normdir = os.path.normcase(dir)
        if normdir not in normdirs and os.path.isdir(dir):
            dirs.append(dir)
            normdirs.append(normdir)
    return dirs

def getdoc(object):
    """Get the doc string or comments for an object."""
    result = inspect.getdoc(object) or inspect.getcomments(object)
    return result and re.sub('^ *\n', '', result.rstrip()) or ''

def splitdoc(doc):
    """Split a doc string into a synopsis line (if any) and the rest."""
    lines = doc.strip().split('\n')
    if len(lines) == 1:
        return lines[0], ''
    elif len(lines) >= 2 and not lines[1].rstrip():
        return lines[0], '\n'.join(lines[2:])
    return '', '\n'.join(lines)

def classname(object, modname):
    """Get a class name and qualify it with a module name if necessary."""
    name = object.__name__
    if object.__module__ != modname:
        name = object.__module__ + '.' + name
    return name

def isdata(object):
    """Check if an object is of a type that probably means it's data."""
    return not (inspect.ismodule(object) or inspect.isclass(object) or
                inspect.isroutine(object) or inspect.isframe(object) or
                inspect.istraceback(object) or inspect.iscode(object))

def replace(text, *pairs):
    """Do a series of global replacements on a string."""
    while pairs:
        text = pairs[1].join(text.split(pairs[0]))
        pairs = pairs[2:]
    return text

def cram(text, maxlen):
    """Omit part of a string if needed to make it fit in a maximum length."""
    if len(text) > maxlen:
        pre = max(0, (maxlen-3)//2)
        post = max(0, maxlen-3-pre)
        return text[:pre] + '...' + text[len(text)-post:]
    return text

_re_stripid = re.compile(r' at 0x[0-9a-f]{6,16}(>+)$', re.IGNORECASE)
def stripid(text):
    """Remove the hexadecimal id from a Python object representation."""
    # The behaviour of %p is implementation-dependent in terms of case.
    return _re_stripid.sub(r'\1', text)

def _is_some_method(obj):
    return inspect.ismethod(obj) or inspect.ismethoddescriptor(obj)

def allmethods(cl):
    methods = {}
    for key, value in inspect.getmembers(cl, _is_some_method):
        methods[key] = 1
    for base in cl.__bases__:
        methods.update(allmethods(base)) # all your base are belong to us
    for key in methods.keys():
        methods[key] = getattr(cl, key)
    return methods

def _split_list(s, predicate):
    """Split sequence s via predicate, and return pair ([true], [false]).

    The return value is a 2-tuple of lists,
        ([x for x in s if predicate(x)],
         [x for x in s if not predicate(x)])
    """

    yes = []
    no = []
    for x in s:
        if predicate(x):
            yes.append(x)
        else:
            no.append(x)
    return yes, no

def visiblename(name, all=None, obj=None):
    """Decide whether to show documentation on a variable."""
    # Certain special names are redundant.
    if name in {'__builtins__', '__doc__', '__file__', '__path__',
                     '__module__', '__name__', '__slots__', '__package__',
                     '__cached__', '__author__', '__credits__', '__date__',
                     '__version__', '__qualname__'}:
        return 0
    # Private names are hidden, but special names are displayed.
    if name.startswith('__') and name.endswith('__'): return 1
    # Namedtuples have public fields and methods with a single leading underscore
    if name.startswith('_') and hasattr(obj, '_fields'):
        return True
    if all is not None:
        # only document that which the programmer exported in __all__
        return name in all
    else:
        return not name.startswith('_')

def classify_class_attrs(object):
    """Wrap inspect.classify_class_attrs, with fixup for data descriptors."""
    results = []
    for (name, kind, cls, value) in inspect.classify_class_attrs(object):
        if inspect.isdatadescriptor(value):
            kind = 'data descriptor'
        results.append((name, kind, cls, value))
    return results

# ----------------------------------------------------- module manipulation

def ispackage(path):
    """Guess whether a path refers to a package directory."""
    if os.path.isdir(path):
        for ext in ('.py', '.pyc', '.pyo'):
            if os.path.isfile(os.path.join(path, '__init__' + ext)):
                return True
    return False

def source_synopsis(file):
    line = file.readline()
    while line[:1] == '#' or not line.strip():
        line = file.readline()
        if not line: break
    line = line.strip()
    if line[:4] == 'r"""': line = line[1:]
    if line[:3] == '"""':
        line = line[3:]
        if line[-1:] == '\\': line = line[:-1]
        while not line.strip():
            line = file.readline()
            if not line: break
        result = line.split('"""')[0].strip()
    else: result = None
    return result

def synopsis(filename, cache={}):
    """Get the one-line summary out of a module file."""
    mtime = os.stat(filename).st_mtime
    lastupdate, result = cache.get(filename, (None, None))
    if lastupdate is None or lastupdate < mtime:
        try:
            file = tokenize.open(filename)
        except IOError:
            # module can't be opened, so skip it
            return None
        binary_suffixes = importlib.machinery.BYTECODE_SUFFIXES[:]
        binary_suffixes += importlib.machinery.EXTENSION_SUFFIXES[:]
        if any(filename.endswith(x) for x in binary_suffixes):
            # binary modules have to be imported
            file.close()
            if any(filename.endswith(x) for x in
                    importlib.machinery.BYTECODE_SUFFIXES):
                loader = importlib.machinery.SourcelessFileLoader('__temp__',
                                                                  filename)
            else:
                loader = importlib.machinery.ExtensionFileLoader('__temp__',
                                                                 filename)
            try:
                module = loader.load_module('__temp__')
            except:
                return None
            result = (module.__doc__ or '').splitlines()[0]
            del sys.modules['__temp__']
        else:
            # text modules can be directly examined
            result = source_synopsis(file)
            file.close()

        cache[filename] = (mtime, result)
    return result

class ErrorDuringImport(Exception):
    """Errors that occurred while trying to import something to document it."""
    def __init__(self, filename, exc_info):
        self.filename = filename
        self.exc, self.value, self.tb = exc_info

    def __str__(self):
        exc = self.exc.__name__
        return 'problem in %s - %s: %s' % (self.filename, exc, self.value)

def importfile(path):
    """Import a Python source file or compiled file given its path."""
    magic = imp.get_magic()
    with open(path, 'rb') as file:
        if file.read(len(magic)) == magic:
            kind = imp.PY_COMPILED
        else:
            kind = imp.PY_SOURCE
        file.seek(0)
        filename = os.path.basename(path)
        name, ext = os.path.splitext(filename)
        try:
            module = imp.load_module(name, file, path, (ext, 'r', kind))
        except:
            raise ErrorDuringImport(path, sys.exc_info())
    return module

def safeimport(path, forceload=0, cache={}):
    """Import a module; handle errors; return None if the module isn't found.

    If the module *is* found but an exception occurs, it's wrapped in an
    ErrorDuringImport exception and reraised.  Unlike __import__, if a
    package path is specified, the module at the end of the path is returned,
    not the package at the beginning.  If the optional 'forceload' argument
    is 1, we reload the module from disk (unless it's a dynamic extension)."""
    try:
        # If forceload is 1 and the module has been previously loaded from
        # disk, we always have to reload the module.  Checking the file's
        # mtime isn't good enough (e.g. the module could contain a class
        # that inherits from another module that has changed).
        if forceload and path in sys.modules:
            if path not in sys.builtin_module_names:
                # Remove the module from sys.modules and re-import to try
                # and avoid problems with partially loaded modules.
                # Also remove any submodules because they won't appear
                # in the newly loaded module's namespace if they're already
                # in sys.modules.
                subs = [m for m in sys.modules if m.startswith(path + '.')]
                for key in [path] + subs:
                    # Prevent garbage collection.
                    cache[key] = sys.modules[key]
                    del sys.modules[key]
        module = __import__(path)
    except:
        # Did the error occur before or after the module was found?
        (exc, value, tb) = info = sys.exc_info()
        if path in sys.modules:
            # An error occurred while executing the imported module.
            raise ErrorDuringImport(sys.modules[path].__file__, info)
        elif exc is SyntaxError:
            # A SyntaxError occurred before we could execute the module.
            raise ErrorDuringImport(value.filename, info)
        elif exc is ImportError and value.name == path:
            # No such module in the path.
            return None
        else:
            # Some other error occurred during the importing process.
            raise ErrorDuringImport(path, sys.exc_info())
    for part in path.split('.')[1:]:
        try: module = getattr(module, part)
        except AttributeError: return None
    return module

# ---------------------------------------------------- formatter base class

class Doc:

    PYTHONDOCS = os.environ.get("PYTHONDOCS",
                                "http://docs.python.org/%d.%d/library"
                                % sys.version_info[:2])

    def document(self, object, name=None, *args):
        """Generate documentation for an object."""
        args = (object, name) + args
        # 'try' clause is to attempt to handle the possibility that inspect
        # identifies something in a way that pydoc itself has issues handling;
        # think 'super' and how it is a descriptor (which raises the exception
        # by lacking a __name__ attribute) and an instance.
        if inspect.isgetsetdescriptor(object): return self.docdata(*args)
        if inspect.ismemberdescriptor(object): return self.docdata(*args)
        try:
            if inspect.ismodule(object): return self.docmodule(*args)
            if inspect.isclass(object): return self.docclass(*args)
            if inspect.isroutine(object): return self.docroutine(*args)
        except AttributeError:
            pass
        if isinstance(object, property): return self.docproperty(*args)
        return self.docother(*args)

    def fail(self, object, name=None, *args):
        """Raise an exception for unimplemented types."""
        message = "don't know how to document object%s of type %s" % (
            name and ' ' + repr(name), type(object).__name__)
        raise TypeError(message)

    docmodule = docclass = docroutine = docother = docproperty = docdata = fail

    def getdocloc(self, object):
        """Return the location of module docs or None"""

        try:
            file = inspect.getabsfile(object)
        except TypeError:
            file = '(built-in)'

        docloc = os.environ.get("PYTHONDOCS", self.PYTHONDOCS)

        basedir = os.path.join(sys.exec_prefix, "lib",
                               "python%d.%d" %  sys.version_info[:2])
        if (isinstance(object, type(os)) and
            (object.__name__ in ('errno', 'exceptions', 'gc', 'imp',
                                 'marshal', 'posix', 'signal', 'sys',
                                 '_thread', 'zipimport') or
             (file.startswith(basedir) and
              not file.startswith(os.path.join(basedir, 'site-packages')))) and
            object.__name__ not in ('xml.etree', 'test.pydoc_mod')):
            if docloc.startswith("http://"):
                docloc = "%s/%s" % (docloc.rstrip("/"), object.__name__)
            else:
                docloc = os.path.join(docloc, object.__name__ + ".html")
        else:
            docloc = None
        return docloc

# -------------------------------------------- HTML documentation generator

class HTMLRepr(Repr):
    """Class for safely making an HTML representation of a Python object."""
    def __init__(self):
        Repr.__init__(self)
        self.maxlist = self.maxtuple = 20
        self.maxdict = 10
        self.maxstring = self.maxother = 100

    def escape(self, text):
        return replace(text, '&', '&amp;', '<', '&lt;', '>', '&gt;')

    def repr(self, object):
        return Repr.repr(self, object)

    def repr1(self, x, level):
        if hasattr(type(x), '__name__'):
            methodname = 'repr_' + '_'.join(type(x).__name__.split())
            if hasattr(self, methodname):
                return getattr(self, methodname)(x, level)
        return self.escape(cram(stripid(repr(x)), self.maxother))

    def repr_string(self, x, level):
        test = cram(x, self.maxstring)
        testrepr = repr(test)
        if '\\' in test and '\\' not in replace(testrepr, r'\\', ''):
            # Backslashes are only literal in the string and are never
            # needed to make any special characters, so show a raw string.
            return 'r' + testrepr[0] + self.escape(test) + testrepr[0]
        return re.sub(r'((\\[\\abfnrtv\'"]|\\[0-9]..|\\x..|\\u....)+)',
                      r'<font color="#c040c0">\1</font>',
                      self.escape(testrepr))

    repr_str = repr_string

    def repr_instance(self, x, level):
        try:
            return self.escape(cram(stripid(repr(x)), self.maxstring))
        except:
            return self.escape('<%s instance>' % x.__class__.__name__)

    repr_unicode = repr_string

class HTMLDoc(Doc):
    """Formatter class for HTML documentation."""

    # ------------------------------------------- HTML formatting utilities

    _repr_instance = HTMLRepr()
    repr = _repr_instance.repr
    escape = _repr_instance.escape

    def page(self, title, contents):
        """Format an HTML page."""
        return '''\
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><head><title>Python: %s</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head><body bgcolor="#f0f0f8">
%s
</body></html>''' % (title, contents)

    def heading(self, title, fgcol, bgcol, extras=''):
        """Format a page heading."""
        return '''
<table width="100%%" cellspacing=0 cellpadding=2 border=0 summary="heading">
<tr bgcolor="%s">
<td valign=bottom>&nbsp;<br>
<font color="%s" face="helvetica, arial">&nbsp;<br>%s</font></td
><td align=right valign=bottom
><font color="%s" face="helvetica, arial">%s</font></td></tr></table>
    ''' % (bgcol, fgcol, title, fgcol, extras or '&nbsp;')

    def section(self, title, fgcol, bgcol, contents, width=6,
                prelude='', marginalia=None, gap='&nbsp;'):
        """Format a section with a heading."""
        if marginalia is None:
            marginalia = '<tt>' + '&nbsp;' * width + '</tt>'
        result = '''<p>
<table width="100%%" cellspacing=0 cellpadding=2 border=0 summary="section">
<tr bgcolor="%s">
<td colspan=3 valign=bottom>&nbsp;<br>
<font color="%s" face="helvetica, arial">%s</font></td></tr>
    ''' % (bgcol, fgcol, title)
        if prelude:
            result = result + '''
<tr bgcolor="%s"><td rowspan=2>%s</td>
<td colspan=2>%s</td></tr>
<tr><td>%s</td>''' % (bgcol, marginalia, prelude, gap)
        else:
            result = result + '''
<tr><td bgcolor="%s">%s</td><td>%s</td>''' % (bgcol, marginalia, gap)

        return result + '\n<td width="100%%">%s</td></tr></table>' % contents

    def bigsection(self, title, *args):
        """Format a section with a big heading."""
        title = '<big><strong>%s</strong></big>' % title
        return self.section(title, *args)

    def preformat(self, text):
        """Format literal preformatted text."""
        text = self.escape(text.expandtabs())
        return replace(text, '\n\n', '\n \n', '\n\n', '\n \n',
                             ' ', '&nbsp;', '\n', '<br>\n')

    def multicolumn(self, list, format, cols=4):
        """Format a list of items into a multi-column list."""
        result = ''
        rows = (len(list)+cols-1)//cols
        for col in range(cols):
            result = result + '<td width="%d%%" valign=top>' % (100//cols)
            for i in range(rows*col, rows*col+rows):
                if i < len(list):
                    result = result + format(list[i]) + '<br>\n'
            result = result + '</td>'
        return '<table width="100%%" summary="list"><tr>%s</tr></table>' % result

    def grey(self, text): return '<font color="#909090">%s</font>' % text

    def namelink(self, name, *dicts):
        """Make a link for an identifier, given name-to-URL mappings."""
        for dict in dicts:
            if name in dict:
                return '<a href="%s">%s</a>' % (dict[name], name)
        return name

    def classlink(self, object, modname):
        """Make a link for a class."""
        name, module = object.__name__, sys.modules.get(object.__module__)
        if hasattr(module, name) and getattr(module, name) is object:
            return '<a href="%s.html#%s">%s</a>' % (
                module.__name__, name, classname(object, modname))
        return classname(object, modname)

    def modulelink(self, object):
        """Make a link for a module."""
        return '<a href="%s.html">%s</a>' % (object.__name__, object.__name__)

    def modpkglink(self, modpkginfo):
        """Make a link for a module or package to display in an index."""
        name, path, ispackage, shadowed = modpkginfo
        if shadowed:
            return self.grey(name)
        if path:
            url = '%s.%s.html' % (path, name)
        else:
            url = '%s.html' % name
        if ispackage:
            text = '<strong>%s</strong>&nbsp;(package)' % name
        else:
            text = name
        return '<a href="%s">%s</a>' % (url, text)

    def filelink(self, url, path):
        """Make a link to source file."""
        return '<a href="file:%s">%s</a>' % (url, path)

    def markup(self, text, escape=None, funcs={}, classes={}, methods={}):
        """Mark up some plain text, given a context of symbols to look for.
        Each context dictionary maps object names to anchor names."""
        escape = escape or self.escape
        results = []
        here = 0
        pattern = re.compile(r'\b((http|ftp)://\S+[\w/]|'
                                r'RFC[- ]?(\d+)|'
                                r'PEP[- ]?(\d+)|'
                                r'(self\.)?(\w+))')
        while True:
            match = pattern.search(text, here)
            if not match: break
            start, end = match.span()
            results.append(escape(text[here:start]))

            all, scheme, rfc, pep, selfdot, name = match.groups()
            if scheme:
                url = escape(all).replace('"', '&quot;')
                results.append('<a href="%s">%s</a>' % (url, url))
            elif rfc:
                url = 'http://www.rfc-editor.org/rfc/rfc%d.txt' % int(rfc)
                results.append('<a href="%s">%s</a>' % (url, escape(all)))
            elif pep:
                url = 'http://www.python.org/dev/peps/pep-%04d/' % int(pep)
                results.append('<a href="%s">%s</a>' % (url, escape(all)))
            elif text[end:end+1] == '(':
                results.append(self.namelink(name, methods, funcs, classes))
            elif selfdot:
                results.append('self.<strong>%s</strong>' % name)
            else:
                results.append(self.namelink(name, classes))
            here = end
        results.append(escape(text[here:]))
        return ''.join(results)

    # ---------------------------------------------- type-specific routines

    def formattree(self, tree, modname, parent=None):
        """Produce HTML for a class tree as given by inspect.getclasstree()."""
        result = ''
        for entry in tree:
            if type(entry) is type(()):
                c, bases = entry
                result = result + '<dt><font face="helvetica, arial">'
                result = result + self.classlink(c, modname)
                if bases and bases != (parent,):
                    parents = []
                    for base in bases:
                        parents.append(self.classlink(base, modname))
                    result = result + '(' + ', '.join(parents) + ')'
                result = result + '\n</font></dt>'
            elif type(entry) is type([]):
                result = result + '<dd>\n%s</dd>\n' % self.formattree(
                    entry, modname, c)
        return '<dl>\n%s</dl>\n' % result

    def docmodule(self, object, name=None, mod=None, *ignored):
        """Produce HTML documentation for a module object."""
        name = object.__name__ # ignore the passed-in name
        try:
            all = object.__all__
        except AttributeError:
            all = None
        parts = name.split('.')
        links = []
        for i in range(len(parts)-1):
            links.append(
                '<a href="%s.html"><font color="#ffffff">%s</font></a>' %
                ('.'.join(parts[:i+1]), parts[i]))
        linkedname = '.'.join(links + parts[-1:])
        head = '<big><big><strong>%s</strong></big></big>' % linkedname
        try:
            path = inspect.getabsfile(object)
            url = path
            if sys.platform == 'win32':
                import nturl2path
                url = nturl2path.pathname2url(path)
            filelink = self.filelink(url, path)
        except TypeError:
            filelink = '(built-in)'
        info = []
        if hasattr(object, '__version__'):
            version = str(object.__version__)
            if version[:11] == '$' + 'Revision: ' and version[-1:] == '$':
                version = version[11:-1].strip()
            info.append('version %s' % self.escape(version))
        if hasattr(object, '__date__'):
            info.append(self.escape(str(object.__date__)))
        if info:
            head = head + ' (%s)' % ', '.join(info)
        docloc = self.getdocloc(object)
        if docloc is not None:
            docloc = '<br><a href="%(docloc)s">Module Reference</a>' % locals()
        else:
            docloc = ''
        result = self.heading(
            head, '#ffffff', '#7799ee',
            '<a href=".">index</a><br>' + filelink + docloc)

        modules = inspect.getmembers(object, inspect.ismodule)

        classes, cdict = [], {}
        for key, value in inspect.getmembers(object, inspect.isclass):
            # if __all__ exists, believe it.  Otherwise use old heuristic.
            if (all is not None or
                (inspect.getmodule(value) or object) is object):
                if visiblename(key, all, object):
                    classes.append((key, value))
                    cdict[key] = cdict[value] = '#' + key
        for key, value in classes:
            for base in value.__bases__:
                key, modname = base.__name__, base.__module__
                module = sys.modules.get(modname)
                if modname != name and module and hasattr(module, key):
                    if getattr(module, key) is base:
                        if not key in cdict:
                            cdict[key] = cdict[base] = modname + '.html#' + key
        funcs, fdict = [], {}
        for key, value in inspect.getmembers(object, inspect.isroutine):
            # if __all__ exists, believe it.  Otherwise use old heuristic.
            if (all is not None or
                inspect.isbuiltin(value) or inspect.getmodule(value) is object):
                if visiblename(key, all, object):
                    funcs.append((key, value))
                    fdict[key] = '#-' + key
                    if inspect.isfunction(value): fdict[value] = fdict[key]
        data = []
        for key, value in inspect.getmembers(object, isdata):
            if visiblename(key, all, object):
                data.append((key, value))

        doc = self.markup(getdoc(object), self.preformat, fdict, cdict)
        doc = doc and '<tt>%s</tt>' % doc
        result = result + '<p>%s</p>\n' % doc

        if hasattr(object, '__path__'):
            modpkgs = []
            for importer, modname, ispkg in pkgutil.iter_modules(object.__path__):
                modpkgs.append((modname, name, ispkg, 0))
            modpkgs.sort()
            contents = self.multicolumn(modpkgs, self.modpkglink)
            result = result + self.bigsection(
                'Package Contents', '#ffffff', '#aa55cc', contents)
        elif modules:
            contents = self.multicolumn(
                modules, lambda t: self.modulelink(t[1]))
            result = result + self.bigsection(
                'Modules', '#ffffff', '#aa55cc', contents)

        if classes:
            classlist = [value for (key, value) in classes]
            contents = [
                self.formattree(inspect.getclasstree(classlist, 1), name)]
            for key, value in classes:
                contents.append(self.document(value, key, name, fdict, cdict))
            result = result + self.bigsection(
                'Classes', '#ffffff', '#ee77aa', ' '.join(contents))
        if funcs:
            contents = []
            for key, value in funcs:
                contents.append(self.document(value, key, name, fdict, cdict))
            result = result + self.bigsection(
                'Functions', '#ffffff', '#eeaa77', ' '.join(contents))
        if data:
            contents = []
            for key, value in data:
                contents.append(self.document(value, key))
            result = result + self.bigsection(
                'Data', '#ffffff', '#55aa55', '<br>\n'.join(contents))
        if hasattr(object, '__author__'):
            contents = self.markup(str(object.__author__), self.preformat)
            result = result + self.bigsection(
                'Author', '#ffffff', '#7799ee', contents)
        if hasattr(object, '__credits__'):
            contents = self.markup(str(object.__credits__), self.preformat)
            result = result + self.bigsection(
                'Credits', '#ffffff', '#7799ee', contents)

        return result

    def docclass(self, object, name=None, mod=None, funcs={}, classes={},
                 *ignored):
        """Produce HTML documentation for a class object."""
        realname = object.__name__
        name = name or realname
        bases = object.__bases__

        contents = []
        push = contents.append

        # Cute little class to pump out a horizontal rule between sections.
        class HorizontalRule:
            def __init__(self):
                self.needone = 0
            def maybe(self):
                if self.needone:
                    push('<hr>\n')
                self.needone = 1
        hr = HorizontalRule()

        # List the mro, if non-trivial.
        mro = deque(inspect.getmro(object))
        if len(mro) > 2:
            hr.maybe()
            push('<dl><dt>Method resolution order:</dt>\n')
            for base in mro:
                push('<dd>%s</dd>\n' % self.classlink(base,
                                                      object.__module__))
            push('</dl>\n')

        def spill(msg, attrs, predicate):
            ok, attrs = _split_list(attrs, predicate)
            if ok:
                hr.maybe()
                push(msg)
                for name, kind, homecls, value in ok:
                    try:
                        value = getattr(object, name)
                    except Exception:
                        # Some descriptors may meet a failure in their __get__.
                        # (bug #1785)
                        push(self._docdescriptor(name, value, mod))
                    else:
                        push(self.document(value, name, mod,
                                        funcs, classes, mdict, object))
                    push('\n')
            return attrs

        def spilldescriptors(msg, attrs, predicate):
            ok, attrs = _split_list(attrs, predicate)
            if ok:
                hr.maybe()
                push(msg)
                for name, kind, homecls, value in ok:
                    push(self._docdescriptor(name, value, mod))
            return attrs

        def spilldata(msg, attrs, predicate):
            ok, attrs = _split_list(attrs, predicate)
            if ok:
                hr.maybe()
                push(msg)
                for name, kind, homecls, value in ok:
                    base = self.docother(getattr(object, name), name, mod)
                    if callable(value) or inspect.isdatadescriptor(value):
                        doc = getattr(value, "__doc__", None)
                    else:
                        doc = None
                    if doc is None:
                        push('<dl><dt>%s</dl>\n' % base)
                    else:
                        doc = self.markup(getdoc(value), self.preformat,
                                          funcs, classes, mdict)
                        doc = '<dd><tt>%s</tt>' % doc
                        push('<dl><dt>%s%s</dl>\n' % (base, doc))
                    push('\n')
            return attrs

        attrs = [(name, kind, cls, value)
                 for name, kind, cls, value in classify_class_attrs(object)
                 if visiblename(name, obj=object)]

        mdict = {}
        for key, kind, homecls, value in attrs:
            mdict[key] = anchor = '#' + name + '-' + key
            try:
                value = getattr(object, name)
            except Exception:
                # Some descriptors may meet a failure in their __get__.
                # (bug #1785)
                pass
            try:
                # The value may not be hashable (e.g., a data attr with
                # a dict or list value).
                mdict[value] = anchor
            except TypeError:
                pass

        while attrs:
            if mro:
                thisclass = mro.popleft()
            else:
                thisclass = attrs[0][2]
            attrs, inherited = _split_list(attrs, lambda t: t[2] is thisclass)

            if thisclass is builtins.object:
                attrs = inherited
                continue
            elif thisclass is object:
                tag = 'defined here'
            else:
                tag = 'inherited from %s' % self.classlink(thisclass,
                                                           object.__module__)
            tag += ':<br>\n'

            # Sort attrs by name.
            attrs.sort(key=lambda t: t[0])

            # Pump out the attrs, segregated by kind.
            attrs = spill('Methods %s' % tag, attrs,
                          lambda t: t[1] == 'method')
            attrs = spill('Class methods %s' % tag, attrs,
                          lambda t: t[1] == 'class method')
            attrs = spill('Static methods %s' % tag, attrs,
                          lambda t: t[1] == 'static method')
            attrs = spilldescriptors('Data descriptors %s' % tag, attrs,
                                     lambda t: t[1] == 'data descriptor')
            attrs = spilldata('Data and other attributes %s' % tag, attrs,
                              lambda t: t[1] == 'data')
            assert attrs == []
            attrs = inherited

        contents = ''.join(contents)

        if name == realname:
            title = '<a name="%s">class <strong>%s</strong></a>' % (
                name, realname)
        else:
            title = '<strong>%s</strong> = <a name="%s">class %s</a>' % (
                name, name, realname)
        if bases:
            parents = []
            for base in bases:
                parents.append(self.classlink(base, object.__module__))
            title = title + '(%s)' % ', '.join(parents)
        doc = self.markup(getdoc(object), self.preformat, funcs, classes, mdict)
        doc = doc and '<tt>%s<br>&nbsp;</tt>' % doc

        return self.section(title, '#000000', '#ffc8d8', contents, 3, doc)

    def formatvalue(self, object):
        """Format an argument default value as text."""
        return self.grey('=' + self.repr(object))

    def docroutine(self, object, name=None, mod=None,
                   funcs={}, classes={}, methods={}, cl=None):
        """Produce HTML documentation for a function or method object."""
        realname = object.__name__
        name = name or realname
        anchor = (cl and cl.__name__ or '') + '-' + name
        note = ''
        skipdocs = 0
        if inspect.ismethod(object):
            imclass = object.__self__.__class__
            if cl:
                if imclass is not cl:
                    note = ' from ' + self.classlink(imclass, mod)
            else:
                if object.__self__ is not None:
                    note = ' method of %s instance' % self.classlink(
                        object.__self__.__class__, mod)
                else:
                    note = ' unbound %s method' % self.classlink(imclass,mod)
            object = object.__func__

        if name == realname:
            title = '<a name="%s"><strong>%s</strong></a>' % (anchor, realname)
        else:
            if (cl and realname in cl.__dict__ and
                cl.__dict__[realname] is object):
                reallink = '<a href="#%s">%s</a>' % (
                    cl.__name__ + '-' + realname, realname)
                skipdocs = 1
            else:
                reallink = realname
            title = '<a name="%s"><strong>%s</strong></a> = %s' % (
                anchor, name, reallink)
        if inspect.isfunction(object):
            args, varargs, kwonlyargs, kwdefaults, varkw, defaults, ann = \
                inspect.getfullargspec(object)
            argspec = inspect.formatargspec(
                args, varargs, kwonlyargs, kwdefaults, varkw, defaults, ann,
                formatvalue=self.formatvalue,
                formatannotation=inspect.formatannotationrelativeto(object))
            if realname == '<lambda>':
                title = '<strong>%s</strong> <em>lambda</em> ' % name
                # XXX lambda's won't usually have func_annotations['return']
                # since the syntax doesn't support but it is possible.
                # So removing parentheses isn't truly safe.
                argspec = argspec[1:-1] # remove parentheses
        else:
            argspec = '(...)'

        decl = title + argspec + (note and self.grey(
               '<font face="helvetica, arial">%s</font>' % note))

        if skipdocs:
            return '<dl><dt>%s</dt></dl>\n' % decl
        else:
            doc = self.markup(
                getdoc(object), self.preformat, funcs, classes, methods)
            doc = doc and '<dd><tt>%s</tt></dd>' % doc
            return '<dl><dt>%s</dt>%s</dl>\n' % (decl, doc)

    def _docdescriptor(self, name, value, mod):
        results = []
        push = results.append

        if name:
            push('<dl><dt><strong>%s</strong></dt>\n' % name)
        if value.__doc__ is not None:
            doc = self.markup(getdoc(value), self.preformat)
            push('<dd><tt>%s</tt></dd>\n' % doc)
        push('</dl>\n')

        return ''.join(results)

    def docproperty(self, object, name=None, mod=None, cl=None):
        """Produce html documentation for a property."""
        return self._docdescriptor(name, object, mod)

    def docother(self, object, name=None, mod=None, *ignored):
        """Produce HTML documentation for a data object."""
        lhs = name and '<strong>%s</strong> = ' % name or ''
        return lhs + self.repr(object)

    def docdata(self, object, name=None, mod=None, cl=None):
        """Produce html documentation for a data descriptor."""
        return self._docdescriptor(name, object, mod)

    def index(self, dir, shadowed=None):
        """Generate an HTML index for a directory of modules."""
        modpkgs = []
        if shadowed is None: shadowed = {}
        for importer, name, ispkg in pkgutil.iter_modules([dir]):
            if any((0xD800 <= ord(ch) <= 0xDFFF) for ch in name):
                # ignore a module if its name contains a surrogate character
                continue
            modpkgs.append((name, '', ispkg, name in shadowed))
            shadowed[name] = 1

        modpkgs.sort()
        contents = self.multicolumn(modpkgs, self.modpkglink)
        return self.bigsection(dir, '#ffffff', '#ee77aa', contents)

# -------------------------------------------- text documentation generator

class TextRepr(Repr):
    """Class for safely making a text representation of a Python object."""
    def __init__(self):
        Repr.__init__(self)
        self.maxlist = self.maxtuple = 20
        self.maxdict = 10
        self.maxstring = self.maxother = 100

    def repr1(self, x, level):
        if hasattr(type(x), '__name__'):
            methodname = 'repr_' + '_'.join(type(x).__name__.split())
            if hasattr(self, methodname):
                return getattr(self, methodname)(x, level)
        return cram(stripid(repr(x)), self.maxother)

    def repr_string(self, x, level):
        test = cram(x, self.maxstring)
        testrepr = repr(test)
        if '\\' in test and '\\' not in replace(testrepr, r'\\', ''):
            # Backslashes are only literal in the string and are never
            # needed to make any special characters, so show a raw string.
            return 'r' + testrepr[0] + test + testrepr[0]
        return testrepr

    repr_str = repr_string

    def repr_instance(self, x, level):
        try:
            return cram(stripid(repr(x)), self.maxstring)
        except:
            return '<%s instance>' % x.__class__.__name__

class TextDoc(Doc):
    """Formatter class for text documentation."""

    # ------------------------------------------- text formatting utilities

    _repr_instance = TextRepr()
    repr = _repr_instance.repr

    def bold(self, text):
        """Format a string in bold by overstriking."""
        return ''.join(ch + '\b' + ch for ch in text)

    def indent(self, text, prefix='    '):
        """Indent text by prepending a given prefix to each line."""
        if not text: return ''
        lines = [prefix + line for line in text.split('\n')]
        if lines: lines[-1] = lines[-1].rstrip()
        return '\n'.join(lines)

    def section(self, title, contents):
        """Format a section with a given heading."""
        clean_contents = self.indent(contents).rstrip()
        return self.bold(title) + '\n' + clean_contents + '\n\n'

    # ---------------------------------------------- type-specific routines

    def formattree(self, tree, modname, parent=None, prefix=''):
        """Render in text a class tree as returned by inspect.getclasstree()."""
        result = ''
        for entry in tree:
            if type(entry) is type(()):
                c, bases = entry
                result = result + prefix + classname(c, modname)
                if bases and bases != (parent,):
                    parents = (classname(c, modname) for c in bases)
                    result = result + '(%s)' % ', '.join(parents)
                result = result + '\n'
            elif type(entry) is type([]):
                result = result + self.formattree(
                    entry, modname, c, prefix + '    ')
        return result

    def docmodule(self, object, name=None, mod=None):
        """Produce text documentation for a given module object."""
        name = object.__name__ # ignore the passed-in name
        synop, desc = splitdoc(getdoc(object))
        result = self.section('NAME', name + (synop and ' - ' + synop))
        all = getattr(object, '__all__', None)
        docloc = self.getdocloc(object)
        if docloc is not None:
            result = result + self.section('MODULE REFERENCE', docloc + """

The following documentation is automatically generated from the Python
source files.  It may be incomplete, incorrect or include features that
are considered implementation detail and may vary between Python
implementations.  When in doubt, consult the module reference at the
location listed above.
""")

        if desc:
            result = result + self.section('DESCRIPTION', desc)

        classes = []
        for key, value in inspect.getmembers(object, inspect.isclass):
            # if __all__ exists, believe it.  Otherwise use old heuristic.
            if (all is not None
                or (inspect.getmodule(value) or object) is object):
                if visiblename(key, all, object):
                    classes.append((key, value))
        funcs = []
        for key, value in inspect.getmembers(object, inspect.isroutine):
            # if __all__ exists, believe it.  Otherwise use old heuristic.
            if (all is not None or
                inspect.isbuiltin(value) or inspect.getmodule(value) is object):
                if visiblename(key, all, object):
                    funcs.append((key, value))
        data = []
        for key, value in inspect.getmembers(object, isdata):
            if visiblename(key, all, object):
                data.append((key, value))

        modpkgs = []
        modpkgs_names = set()
        if hasattr(object, '__path__'):
            for importer, modname, ispkg in pkgutil.iter_modules(object.__path__):
                modpkgs_names.add(modname)
                if ispkg:
                    modpkgs.append(modname + ' (package)')
                else:
                    modpkgs.append(modname)

            modpkgs.sort()
            result = result + self.section(
                'PACKAGE CONTENTS', '\n'.join(modpkgs))

        # Detect submodules as sometimes created by C extensions
        submodules = []
        for key, value in inspect.getmembers(object, inspect.ismodule):
            if value.__name__.startswith(name + '.') and key not in modpkgs_names:
                submodules.append(key)
        if submodules:
            submodules.sort()
            result = result + self.section(
                'SUBMODULES', '\n'.join(submodules))

        if classes:
            classlist = [value for key, value in classes]
            contents = [self.formattree(
                inspect.getclasstree(classlist, 1), name)]
            for key, value in classes:
                contents.append(self.document(value, key, name))
            result = result + self.section('CLASSES', '\n'.join(contents))

        if funcs:
            contents = []
            for key, value in funcs:
                contents.append(self.document(value, key, name))
            result = result + self.section('FUNCTIONS', '\n'.join(contents))

        if data:
            contents = []
            for key, value in data:
                contents.append(self.docother(value, key, name, maxlen=70))
            result = result + self.section('DATA', '\n'.join(contents))

        if hasattr(object, '__version__'):
            version = str(object.__version__)
            if version[:11] == '$' + 'Revision: ' and version[-1:] == '$':
                version = version[11:-1].strip()
            result = result + self.section('VERSION', version)
        if hasattr(object, '__date__'):
            result = result + self.section('DATE', str(object.__date__))
        if hasattr(object, '__author__'):
            result = result + self.section('AUTHOR', str(object.__author__))
        if hasattr(object, '__credits__'):
            result = result + self.section('CREDITS', str(object.__credits__))
        try:
            file = inspect.getabsfile(object)
        except TypeError:
            file = '(built-in)'
        result = result + self.section('FILE', file)
        return result

    def docclass(self, object, name=None, mod=None, *ignored):
        """Produce text documentation for a given class object."""
        realname = object.__name__
        name = name or realname
        bases = object.__bases__

        def makename(c, m=object.__module__):
            return classname(c, m)

        if name == realname:
            title = 'class ' + self.bold(realname)
        else:
            title = self.bold(name) + ' = class ' + realname
        if bases:
            parents = map(makename, bases)
            title = title + '(%s)' % ', '.join(parents)

        doc = getdoc(object)
        contents = doc and [doc + '\n'] or []
        push = contents.append

        # List the mro, if non-trivial.
        mro = deque(inspect.getmro(object))
        if len(mro) > 2:
            push("Method resolution order:")
            for base in mro:
                push('    ' + makename(base))
            push('')

        # Cute little class to pump out a horizontal rule between sections.
        class HorizontalRule:
            def __init__(self):
                self.needone = 0
            def maybe(self):
                if self.needone:
                    push('-' * 70)
                self.needone = 1
        hr = HorizontalRule()

        def spill(msg, attrs, predicate):
            ok, attrs = _split_list(attrs, predicate)
            if ok:
                hr.maybe()
                push(msg)
                for name, kind, homecls, value in ok:
                    try:
                        value = getattr(object, name)
                    except Exception:
                        # Some descriptors may meet a failure in their __get__.
                        # (bug #1785)
                        push(self._docdescriptor(name, value, mod))
                    else:
                        push(self.document(value,
                                        name, mod, object))
            return attrs

        def spilldescriptors(msg, attrs, predicate):
            ok, attrs = _split_list(attrs, predicate)
            if ok:
                hr.maybe()
                push(msg)
                for name, kind, homecls, value in ok:
                    push(self._docdescriptor(name, value, mod))
            return attrs

        def spilldata(msg, attrs, predicate):
            ok, attrs = _split_list(attrs, predicate)
            if ok:
                hr.maybe()
                push(msg)
                for name, kind, homecls, value in ok:
                    if callable(value) or inspect.isdatadescriptor(value):
                        doc = getdoc(value)
                    else:
                        doc = None
                    push(self.docother(getattr(object, name),
                                       name, mod, maxlen=70, doc=doc) + '\n')
            return attrs

        attrs = [(name, kind, cls, value)
                 for name, kind, cls, value in classify_class_attrs(object)
                 if visiblename(name, obj=object)]

        while attrs:
            if mro:
                thisclass = mro.popleft()
            else:
                thisclass = attrs[0][2]
            attrs, inherited = _split_list(attrs, lambda t: t[2] is thisclass)

            if thisclass is builtins.object:
                attrs = inherited
                continue
            elif thisclass is object:
                tag = "defined here"
            else:
                tag = "inherited from %s" % classname(thisclass,
                                                      object.__module__)

            # Sort attrs by name.
            attrs.sort()

            # Pump out the attrs, segregated by kind.
            attrs = spill("Methods %s:\n" % tag, attrs,
                          lambda t: t[1] == 'method')
            attrs = spill("Class methods %s:\n" % tag, attrs,
                          lambda t: t[1] == 'class method')
            attrs = spill("Static methods %s:\n" % tag, attrs,
                          lambda t: t[1] == 'static method')
            attrs = spilldescriptors("Data descriptors %s:\n" % tag, attrs,
                                     lambda t: t[1] == 'data descriptor')
            attrs = spilldata("Data and other attributes %s:\n" % tag, attrs,
                              lambda t: t[1] == 'data')
            assert attrs == []
            attrs = inherited

        contents = '\n'.join(contents)
        if not contents:
            return title + '\n'
        return title + '\n' + self.indent(contents.rstrip(), ' |  ') + '\n'

    def formatvalue(self, object):
        """Format an argument default value as text."""
        return '=' + self.repr(object)

    def docroutine(self, object, name=None, mod=None, cl=None):
        """Produce text documentation for a function or method object."""
        realname = object.__name__
        name = name or realname
        note = ''
        skipdocs = 0
        if inspect.ismethod(object):
            imclass = object.__self__.__class__
            if cl:
                if imclass is not cl:
                    note = ' from ' + classname(imclass, mod)
            else:
                if object.__self__ is not None:
                    note = ' method of %s instance' % classname(
                        object.__self__.__class__, mod)
                else:
                    note = ' unbound %s method' % classname(imclass,mod)
            object = object.__func__

        if name == realname:
            title = self.bold(realname)
        else:
            if (cl and realname in cl.__dict__ and
                cl.__dict__[realname] is object):
                skipdocs = 1
            title = self.bold(name) + ' = ' + realname
        if inspect.isfunction(object):
            args, varargs, varkw, defaults, kwonlyargs, kwdefaults, ann = \
              inspect.getfullargspec(object)
            argspec = inspect.formatargspec(
                args, varargs, varkw, defaults, kwonlyargs, kwdefaults, ann,
                formatvalue=self.formatvalue,
                formatannotation=inspect.formatannotationrelativeto(object))
            if realname == '<lambda>':
                title = self.bold(name) + ' lambda '
                # XXX lambda's won't usually have func_annotations['return']
                # since the syntax doesn't support but it is possible.
                # So removing parentheses isn't truly safe.
                argspec = argspec[1:-1] # remove parentheses
        else:
            argspec = '(...)'
        decl = title + argspec + note

        if skipdocs:
            return decl + '\n'
        else:
            doc = getdoc(object) or ''
            return decl + '\n' + (doc and self.indent(doc).rstrip() + '\n')

    def _docdescriptor(self, name, value, mod):
        results = []
        push = results.append

        if name:
            push(self.bold(name))
            push('\n')
        doc = getdoc(value) or ''
        if doc:
            push(self.indent(doc))
            push('\n')
        return ''.join(results)

    def docproperty(self, object, name=None, mod=None, cl=None):
        """Produce text documentation for a property."""
        return self._docdescriptor(name, object, mod)

    def docdata(self, object, name=None, mod=None, cl=None):
        """Produce text documentation for a data descriptor."""
        return self._docdescriptor(name, object, mod)

    def docother(self, object, name=None, mod=None, parent=None, maxlen=None, doc=None):
        """Produce text documentation for a data object."""
        repr = self.repr(object)
        if maxlen:
            line = (name and name + ' = ' or '') + repr
            chop = maxlen - len(line)
            if chop < 0: repr = repr[:chop] + '...'
        line = (name and self.bold(name) + ' = ' or '') + repr
        if doc is not None:
            line += '\n' + self.indent(str(doc))
        return line

class _PlainTextDoc(TextDoc):
    """Subclass of TextDoc which overrides string styling"""
    def bold(self, text):
        return text

# --------------------------------------------------------- user interfaces

def pager(text):
    """The first time this is called, determine what kind of pager to use."""
    global pager
    pager = getpager()
    pager(text)

def getpager():
    """Decide what method to use for paging through text."""
    if not hasattr(sys.stdout, "isatty"):
        return plainpager
    if not sys.stdin.isatty() or not sys.stdout.isatty():
        return plainpager
    if 'PAGER' in os.environ:
        if sys.platform == 'win32': # pipes completely broken in Windows
            return lambda text: tempfilepager(plain(text), os.environ['PAGER'])
        elif os.environ.get('TERM') in ('dumb', 'emacs'):
            return lambda text: pipepager(plain(text), os.environ['PAGER'])
        else:
            return lambda text: pipepager(text, os.environ['PAGER'])
    if os.environ.get('TERM') in ('dumb', 'emacs'):
        return plainpager
    if sys.platform == 'win32' or sys.platform.startswith('os2'):
        return lambda text: tempfilepager(plain(text), 'more <')
    if hasattr(os, 'system') and os.system('(less) 2>/dev/null') == 0:
        return lambda text: pipepager(text, 'less')

    import tempfile
    (fd, filename) = tempfile.mkstemp()
    os.close(fd)
    try:
        if hasattr(os, 'system') and os.system('more "%s"' % filename) == 0:
            return lambda text: pipepager(text, 'more')
        else:
            return ttypager
    finally:
        os.unlink(filename)

def plain(text):
    """Remove boldface formatting from text."""
    return re.sub('.\b', '', text)

def pipepager(text, cmd):
    """Page through text by feeding it to another program."""
    pipe = os.popen(cmd, 'w')
    try:
        pipe.write(text)
        pipe.close()
    except IOError:
        pass # Ignore broken pipes caused by quitting the pager program.

def tempfilepager(text, cmd):
    """Page through text by invoking a program on a temporary file."""
    import tempfile
    filename = tempfile.mktemp()
    file = open(filename, 'w')
    file.write(text)
    file.close()
    try:
        os.system(cmd + ' "' + filename + '"')
    finally:
        os.unlink(filename)

def ttypager(text):
    """Page through text on a text terminal."""
    lines = plain(text).split('\n')
    try:
        import tty
        fd = sys.stdin.fileno()
        old = tty.tcgetattr(fd)
        tty.setcbreak(fd)
        getchar = lambda: sys.stdin.read(1)
    except (ImportError, AttributeError):
        tty = None
        getchar = lambda: sys.stdin.readline()[:-1][:1]

    try:
        r = inc = os.environ.get('LINES', 25) - 1
        sys.stdout.write('\n'.join(lines[:inc]) + '\n')
        while lines[r:]:
            sys.stdout.write('-- more --')
            sys.stdout.flush()
            c = getchar()

            if c in ('q', 'Q'):
                sys.stdout.write('\r          \r')
                break
            elif c in ('\r', '\n'):
                sys.stdout.write('\r          \r' + lines[r] + '\n')
                r = r + 1
                continue
            if c in ('b', 'B', '\x1b'):
                r = r - inc - inc
                if r < 0: r = 0
            sys.stdout.write('\n' + '\n'.join(lines[r:r+inc]) + '\n')
            r = r + inc

    finally:
        if tty:
            tty.tcsetattr(fd, tty.TCSAFLUSH, old)

def plainpager(text):
    """Simply print unformatted text.  This is the ultimate fallback."""
    sys.stdout.write(plain(text))

def describe(thing):
    """Produce a short description of the given thing."""
    if inspect.ismodule(thing):
        if thing.__name__ in sys.builtin_module_names:
            return 'built-in module ' + thing.__name__
        if hasattr(thing, '__path__'):
            return 'package ' + thing.__name__
        else:
            return 'module ' + thing.__name__
    if inspect.isbuiltin(thing):
        return 'built-in function ' + thing.__name__
    if inspect.isgetsetdescriptor(thing):
        return 'getset descriptor %s.%s.%s' % (
            thing.__objclass__.__module__, thing.__objclass__.__name__,
            thing.__name__)
    if inspect.ismemberdescriptor(thing):
        return 'member descriptor %s.%s.%s' % (
            thing.__objclass__.__module__, thing.__objclass__.__name__,
            thing.__name__)
    if inspect.isclass(thing):
        return 'class ' + thing.__name__
    if inspect.isfunction(thing):
        return 'function ' + thing.__name__
    if inspect.ismethod(thing):
        return 'method ' + thing.__name__
    return type(thing).__name__

def locate(path, forceload=0):
    """Locate an object by name or dotted path, importing as necessary."""
    parts = [part for part in path.split('.') if part]
    module, n = None, 0
    while n < len(parts):
        nextmodule = safeimport('.'.join(parts[:n+1]), forceload)
        if nextmodule: module, n = nextmodule, n + 1
        else: break
    if module:
        object = module
    else:
        object = builtins
    for part in parts[n:]:
        try:
            object = getattr(object, part)
        except AttributeError:
            return None
    return object

# --------------------------------------- interactive interpreter interface

text = TextDoc()
plaintext = _PlainTextDoc()
html = HTMLDoc()

def resolve(thing, forceload=0):
    """Given an object or a path to an object, get the object and its name."""
    if isinstance(thing, str):
        object = locate(thing, forceload)
        if not object:
            raise ImportError('no Python documentation found for %r' % thing)
        return object, thing
    else:
        name = getattr(thing, '__name__', None)
        return thing, name if isinstance(name, str) else None

def render_doc(thing, title='Python Library Documentation: %s', forceload=0,
        renderer=None):
    """Render text documentation, given an object or a path to an object."""
    if renderer is None:
        renderer = text
    object, name = resolve(thing, forceload)
    desc = describe(object)
    module = inspect.getmodule(object)
    if name and '.' in name:
        desc += ' in ' + name[:name.rfind('.')]
    elif module and module is not object:
        desc += ' in module ' + module.__name__

    if not (inspect.ismodule(object) or
              inspect.isclass(object) or
              inspect.isroutine(object) or
              inspect.isgetsetdescriptor(object) or
              inspect.ismemberdescriptor(object) or
              isinstance(object, property)):
        # If the passed object is a piece of data or an instance,
        # document its available methods instead of its value.
        object = type(object)
        desc += ' object'
    return title % desc + '\n\n' + renderer.document(object, name)

def doc(thing, title='Python Library Documentation: %s', forceload=0,
        output=None):
    """Display text documentation, given an object or a path to an object."""
    try:
        if output is None:
            pager(render_doc(thing, title, forceload))
        else:
            output.write(render_doc(thing, title, forceload, plaintext))
    except (ImportError, ErrorDuringImport) as value:
        print(value)

def writedoc(thing, forceload=0):
    """Write HTML documentation to a file in the current directory."""
    try:
        object, name = resolve(thing, forceload)
        page = html.page(describe(object), html.document(object, name))
        file = open(name + '.html', 'w', encoding='utf-8')
        file.write(page)
        file.close()
        print('wrote', name + '.html')
    except (ImportError, ErrorDuringImport) as value:
        print(value)

def writedocs(dir, pkgpath='', done=None):
    """Write out HTML documentation for all modules in a directory tree."""
    if done is None: done = {}
    for importer, modname, ispkg in pkgutil.walk_packages([dir], pkgpath):
        writedoc(modname)
    return

class Helper:

    # These dictionaries map a topic name to either an alias, or a tuple
    # (label, seealso-items).  The "label" is the label of the corresponding
    # section in the .rst file under Doc/ and an index into the dictionary
    # in pydoc_data/topics.py.
    #
    # CAUTION: if you change one of these dictionaries, be sure to adapt the
    #          list of needed labels in Doc/tools/sphinxext/pyspecific.py and
    #          regenerate the pydoc_data/topics.py file by running
    #              make pydoc-topics
    #          in Doc/ and copying the output file into the Lib/ directory.

    keywords = {
        'False': '',
        'None': '',
        'True': '',
        'and': 'BOOLEAN',
        'as': 'with',
        'assert': ('assert', ''),
        'break': ('break', 'while for'),
        'class': ('class', 'CLASSES SPECIALMETHODS'),
        'continue': ('continue', 'while for'),
        'def': ('function', ''),
        'del': ('del', 'BASICMETHODS'),
        'elif': 'if',
        'else': ('else', 'while for'),
        'except': 'try',
        'finally': 'try',
        'for': ('for', 'break continue while'),
        'from': 'import',
        'global': ('global', 'nonlocal NAMESPACES'),
        'if': ('if', 'TRUTHVALUE'),
        'import': ('import', 'MODULES'),
        'in': ('in', 'SEQUENCEMETHODS'),
        'is': 'COMPARISON',
        'lambda': ('lambda', 'FUNCTIONS'),
        'nonlocal': ('nonlocal', 'global NAMESPACES'),
        'not': 'BOOLEAN',
        'or': 'BOOLEAN',
        'pass': ('pass', ''),
        'raise': ('raise', 'EXCEPTIONS'),
        'return': ('return', 'FUNCTIONS'),
        'try': ('try', 'EXCEPTIONS'),
        'while': ('while', 'break continue if TRUTHVALUE'),
        'with': ('with', 'CONTEXTMANAGERS EXCEPTIONS yield'),
        'yield': ('yield', ''),
    }
    # Either add symbols to this dictionary or to the symbols dictionary
    # directly: Whichever is easier. They are merged later.
    _symbols_inverse = {
        'STRINGS' : ("'", "'''", "r'", "b'", '"""', '"', 'r"', 'b"'),
        'OPERATORS' : ('+', '-', '*', '**', '/', '//', '%', '<<', '>>', '&',
                       '|', '^', '~', '<', '>', '<=', '>=', '==', '!=', '<>'),
        'COMPARISON' : ('<', '>', '<=', '>=', '==', '!=', '<>'),
        'UNARY' : ('-', '~'),
        'AUGMENTEDASSIGNMENT' : ('+=', '-=', '*=', '/=', '%=', '&=', '|=',
                                '^=', '<<=', '>>=', '**=', '//='),
        'BITWISE' : ('<<', '>>', '&', '|', '^', '~'),
        'COMPLEX' : ('j', 'J')
    }
    symbols = {
        '%': 'OPERATORS FORMATTING',
        '**': 'POWER',
        ',': 'TUPLES LISTS FUNCTIONS',
        '.': 'ATTRIBUTES FLOAT MODULES OBJECTS',
        '...': 'ELLIPSIS',
        ':': 'SLICINGS DICTIONARYLITERALS',
        '@': 'def class',
        '\\': 'STRINGS',
        '_': 'PRIVATENAMES',
        '__': 'PRIVATENAMES SPECIALMETHODS',
        '`': 'BACKQUOTES',
        '(': 'TUPLES FUNCTIONS CALLS',
        ')': 'TUPLES FUNCTIONS CALLS',
        '[': 'LISTS SUBSCRIPTS SLICINGS',
        ']': 'LISTS SUBSCRIPTS SLICINGS'
    }
    for topic, symbols_ in _symbols_inverse.items():
        for symbol in symbols_:
            topics = symbols.get(symbol, topic)
            if topic not in topics:
                topics = topics + ' ' + topic
            symbols[symbol] = topics

    topics = {
        'TYPES': ('types', 'STRINGS UNICODE NUMBERS SEQUENCES MAPPINGS '
                  'FUNCTIONS CLASSES MODULES FILES inspect'),
        'STRINGS': ('strings', 'str UNICODE SEQUENCES STRINGMETHODS '
                    'FORMATTING TYPES'),
        'STRINGMETHODS': ('string-methods', 'STRINGS FORMATTING'),
        'FORMATTING': ('formatstrings', 'OPERATORS'),
        'UNICODE': ('strings', 'encodings unicode SEQUENCES STRINGMETHODS '
                    'FORMATTING TYPES'),
        'NUMBERS': ('numbers', 'INTEGER FLOAT COMPLEX TYPES'),
        'INTEGER': ('integers', 'int range'),
        'FLOAT': ('floating', 'float math'),
        'COMPLEX': ('imaginary', 'complex cmath'),
        'SEQUENCES': ('typesseq', 'STRINGMETHODS FORMATTING range LISTS'),
        'MAPPINGS': 'DICTIONARIES',
        'FUNCTIONS': ('typesfunctions', 'def TYPES'),
        'METHODS': ('typesmethods', 'class def CLASSES TYPES'),
        'CODEOBJECTS': ('bltin-code-objects', 'compile FUNCTIONS TYPES'),
        'TYPEOBJECTS': ('bltin-type-objects', 'types TYPES'),
        'FRAMEOBJECTS': 'TYPES',
        'TRACEBACKS': 'TYPES',
        'NONE': ('bltin-null-object', ''),
        'ELLIPSIS': ('bltin-ellipsis-object', 'SLICINGS'),
        'FILES': ('bltin-file-objects', ''),
        'SPECIALATTRIBUTES': ('specialattrs', ''),
        'CLASSES': ('types', 'class SPECIALMETHODS PRIVATENAMES'),
        'MODULES': ('typesmodules', 'import'),
        'PACKAGES': 'import',
        'EXPRESSIONS': ('operator-summary', 'lambda or and not in is BOOLEAN '
                        'COMPARISON BITWISE SHIFTING BINARY FORMATTING POWER '
                        'UNARY ATTRIBUTES SUBSCRIPTS SLICINGS CALLS TUPLES '
                        'LISTS DICTIONARIES'),
        'OPERATORS': 'EXPRESSIONS',
        'PRECEDENCE': 'EXPRESSIONS',
        'OBJECTS': ('objects', 'TYPES'),
        'SPECIALMETHODS': ('specialnames', 'BASICMETHODS ATTRIBUTEMETHODS '
                           'CALLABLEMETHODS SEQUENCEMETHODS MAPPINGMETHODS '
                           'NUMBERMETHODS CLASSES'),
        'BASICMETHODS': ('customization', 'hash repr str SPECIALMETHODS'),
        'ATTRIBUTEMETHODS': ('attribute-access', 'ATTRIBUTES SPECIALMETHODS'),
        'CALLABLEMETHODS': ('callable-types', 'CALLS SPECIALMETHODS'),
        'SEQUENCEMETHODS': ('sequence-types', 'SEQUENCES SEQUENCEMETHODS '
                             'SPECIALMETHODS'),
        'MAPPINGMETHODS': ('sequence-types', 'MAPPINGS SPECIALMETHODS'),
        'NUMBERMETHODS': ('numeric-types', 'NUMBERS AUGMENTEDASSIGNMENT '
                          'SPECIALMETHODS'),
        'EXECUTION': ('execmodel', 'NAMESPACES DYNAMICFEATURES EXCEPTIONS'),
        'NAMESPACES': ('naming', 'global nonlocal ASSIGNMENT DELETION DYNAMICFEATURES'),
        'DYNAMICFEATURES': ('dynamic-features', ''),
        'SCOPING': 'NAMESPACES',
        'FRAMES': 'NAMESPACES',
        'EXCEPTIONS': ('exceptions', 'try except finally raise'),
        'CONVERSIONS': ('conversions', ''),
        'IDENTIFIERS': ('identifiers', 'keywords SPECIALIDENTIFIERS'),
        'SPECIALIDENTIFIERS': ('id-classes', ''),
        'PRIVATENAMES': ('atom-identifiers', ''),
        'LITERALS': ('atom-literals', 'STRINGS NUMBERS TUPLELITERALS '
                     'LISTLITERALS DICTIONARYLITERALS'),
        'TUPLES': 'SEQUENCES',
        'TUPLELITERALS': ('exprlists', 'TUPLES LITERALS'),
        'LISTS': ('typesseq-mutable', 'LISTLITERALS'),
        'LISTLITERALS': ('lists', 'LISTS LITERALS'),
        'DICTIONARIES': ('typesmapping', 'DICTIONARYLITERALS'),
        'DICTIONARYLITERALS': ('dict', 'DICTIONARIES LITERALS'),
        'ATTRIBUTES': ('attribute-references', 'getattr hasattr setattr ATTRIBUTEMETHODS'),
        'SUBSCRIPTS': ('subscriptions', 'SEQUENCEMETHODS'),
        'SLICINGS': ('slicings', 'SEQUENCEMETHODS'),
        'CALLS': ('calls', 'EXPRESSIONS'),
        'POWER': ('power', 'EXPRESSIONS'),
        'UNARY': ('unary', 'EXPRESSIONS'),
        'BINARY': ('binary', 'EXPRESSIONS'),
        'SHIFTING': ('shifting', 'EXPRESSIONS'),
        'BITWISE': ('bitwise', 'EXPRESSIONS'),
        'COMPARISON': ('comparisons', 'EXPRESSIONS BASICMETHODS'),
        'BOOLEAN': ('booleans', 'EXPRESSIONS TRUTHVALUE'),
        'ASSERTION': 'assert',
        'ASSIGNMENT': ('assignment', 'AUGMENTEDASSIGNMENT'),
        'AUGMENTEDASSIGNMENT': ('augassign', 'NUMBERMETHODS'),
        'DELETION': 'del',
        'RETURNING': 'return',
        'IMPORTING': 'import',
        'CONDITIONAL': 'if',
        'LOOPING': ('compound', 'for while break continue'),
        'TRUTHVALUE': ('truth', 'if while and or not BASICMETHODS'),
        'DEBUGGING': ('debugger', 'pdb'),
        'CONTEXTMANAGERS': ('context-managers', 'with'),
    }

    def __init__(self, input=None, output=None):
        self._input = input
        self._output = output

    input  = property(lambda self: self._input or sys.stdin)
    output = property(lambda self: self._output or sys.stdout)

    def __repr__(self):
        if inspect.stack()[1][3] == '?':
            self()
            return ''
        return '<pydoc.Helper instance>'

    _GoInteractive = object()
    def __call__(self, request=_GoInteractive):
        if request is not self._GoInteractive:
            self.help(request)
        else:
            self.intro()
            self.interact()
            self.output.write('''
You are now leaving help and returning to the Python interpreter.
If you want to ask for help on a particular object directly from the
interpreter, you can type "help(object)".  Executing "help('string')"
has the same effect as typing a particular string at the help> prompt.
''')

    def interact(self):
        self.output.write('\n')
        while True:
            try:
                request = self.getline('help> ')
                if not request: break
            except (KeyboardInterrupt, EOFError):
                break
            request = replace(request, '"', '', "'", '').strip()
            if request.lower() in ('q', 'quit'): break
            self.help(request)

    def getline(self, prompt):
        """Read one line, using input() when appropriate."""
        if self.input is sys.stdin:
            return input(prompt)
        else:
            self.output.write(prompt)
            self.output.flush()
            return self.input.readline()

    def help(self, request):
        if type(request) is type(''):
            request = request.strip()
            if request == 'help': self.intro()
            elif request == 'keywords': self.listkeywords()
            elif request == 'symbols': self.listsymbols()
            elif request == 'topics': self.listtopics()
            elif request == 'modules': self.listmodules()
            elif request[:8] == 'modules ':
                self.listmodules(request.split()[1])
            elif request in self.symbols: self.showsymbol(request)
            elif request in ['True', 'False', 'None']:
                # special case these keywords since they are objects too
                doc(eval(request), 'Help on %s:')
            elif request in self.keywords: self.showtopic(request)
            elif request in self.topics: self.showtopic(request)
            elif request: doc(request, 'Help on %s:', output=self._output)
        elif isinstance(request, Helper): self()
        else: doc(request, 'Help on %s:', output=self._output)
        self.output.write('\n')

    def intro(self):
        self.output.write('''
Welcome to Python %s!  This is the online help utility.

If this is your first time using Python, you should definitely check out
the tutorial on the Internet at http://docs.python.org/%s/tutorial/.

Enter the name of any module, keyword, or topic to get help on writing
Python programs and using Python modules.  To quit this help utility and
return to the interpreter, just type "quit".

To get a list of available modules, keywords, or topics, type "modules",
"keywords", or "topics".  Each module also comes with a one-line summary
of what it does; to list the modules whose summaries contain a given word
such as "spam", type "modules spam".
''' % tuple([sys.version[:3]]*2))

    def list(self, items, columns=4, width=80):
        items = list(sorted(items))
        colw = width // columns
        rows = (len(items) + columns - 1) // columns
        for row in range(rows):
            for col in range(columns):
                i = col * rows + row
                if i < len(items):
                    self.output.write(items[i])
                    if col < columns - 1:
                        self.output.write(' ' + ' ' * (colw - 1 - len(items[i])))
            self.output.write('\n')

    def listkeywords(self):
        self.output.write('''
Here is a list of the Python keywords.  Enter any keyword to get more help.

''')
        self.list(self.keywords.keys())

    def listsymbols(self):
        self.output.write('''
Here is a list of the punctuation symbols which Python assigns special meaning
to. Enter any symbol to get more help.

''')
        self.list(self.symbols.keys())

    def listtopics(self):
        self.output.write('''
Here is a list of available topics.  Enter any topic name to get more help.

''')
        self.list(self.topics.keys())

    def showtopic(self, topic, more_xrefs=''):
        try:
            import pydoc_data.topics
        except ImportError:
            self.output.write('''
Sorry, topic and keyword documentation is not available because the
module "pydoc_data.topics" could not be found.
''')
            return
        target = self.topics.get(topic, self.keywords.get(topic))
        if not target:
            self.output.write('no documentation found for %s\n' % repr(topic))
            return
        if type(target) is type(''):
            return self.showtopic(target, more_xrefs)

        label, xrefs = target
        try:
            doc = pydoc_data.topics.topics[label]
        except KeyError:
            self.output.write('no documentation found for %s\n' % repr(topic))
            return
        pager(doc.strip() + '\n')
        if more_xrefs:
            xrefs = (xrefs or '') + ' ' + more_xrefs
        if xrefs:
            import formatter
            buffer = io.StringIO()
            formatter.DumbWriter(buffer).send_flowing_data(
                'Related help topics: ' + ', '.join(xrefs.split()) + '\n')
            self.output.write('\n%s\n' % buffer.getvalue())

    def _gettopic(self, topic, more_xrefs=''):
        """Return unbuffered tuple of (topic, xrefs).

        If an error occurs here, the exception is caught and displayed by
        the url handler.

        This function duplicates the showtopic method but returns its
        result directly so it can be formatted for display in an html page.
        """
        try:
            import pydoc_data.topics
        except ImportError:
            return('''
Sorry, topic and keyword documentation is not available because the
module "pydoc_data.topics" could not be found.
''' , '')
        target = self.topics.get(topic, self.keywords.get(topic))
        if not target:
            raise ValueError('could not find topic')
        if isinstance(target, str):
            return self._gettopic(target, more_xrefs)
        label, xrefs = target
        doc = pydoc_data.topics.topics[label]
        if more_xrefs:
            xrefs = (xrefs or '') + ' ' + more_xrefs
        return doc, xrefs

    def showsymbol(self, symbol):
        target = self.symbols[symbol]
        topic, _, xrefs = target.partition(' ')
        self.showtopic(topic, xrefs)

    def listmodules(self, key=''):
        if key:
            self.output.write('''
Here is a list of matching modules.  Enter any module name to get more help.

''')
            apropos(key)
        else:
            self.output.write('''
Please wait a moment while I gather a list of all available modules...

''')
            modules = {}
            def callback(path, modname, desc, modules=modules):
                if modname and modname[-9:] == '.__init__':
                    modname = modname[:-9] + ' (package)'
                if modname.find('.') < 0:
                    modules[modname] = 1
            def onerror(modname):
                callback(None, modname, None)
            ModuleScanner().run(callback, onerror=onerror)
            self.list(modules.keys())
            self.output.write('''
Enter any module name to get more help.  Or, type "modules spam" to search
for modules whose descriptions contain the word "spam".
''')

help = Helper()

class Scanner:
    """A generic tree iterator."""
    def __init__(self, roots, children, descendp):
        self.roots = roots[:]
        self.state = []
        self.children = children
        self.descendp = descendp

    def next(self):
        if not self.state:
            if not self.roots:
                return None
            root = self.roots.pop(0)
            self.state = [(root, self.children(root))]
        node, children = self.state[-1]
        if not children:
            self.state.pop()
            return self.next()
        child = children.pop(0)
        if self.descendp(child):
            self.state.append((child, self.children(child)))
        return child


class ModuleScanner:
    """An interruptible scanner that searches module synopses."""

    def run(self, callback, key=None, completer=None, onerror=None):
        if key: key = key.lower()
        self.quit = False
        seen = {}

        for modname in sys.builtin_module_names:
            if modname != '__main__':
                seen[modname] = 1
                if key is None:
                    callback(None, modname, '')
                else:
                    name = __import__(modname).__doc__ or ''
                    desc = name.split('\n')[0]
                    name = modname + ' - ' + desc
                    if name.lower().find(key) >= 0:
                        callback(None, modname, desc)

        for importer, modname, ispkg in pkgutil.walk_packages(onerror=onerror):
            if self.quit:
                break

            # XXX Skipping this file is a workaround for a bug
            # that causes python to crash with a segfault.
            # http://bugs.python.org/issue9319
            #
            # TODO Remove this once the bug is fixed.
            if modname in {'test.badsyntax_pep3120', 'badsyntax_pep3120'}:
                continue

            if key is None:
                callback(None, modname, '')
            else:
                try:
                    loader = importer.find_module(modname)
                except SyntaxError:
                    # raised by tests for bad coding cookies or BOM
                    continue
                if hasattr(loader, 'get_source'):
                    try:
                        source = loader.get_source(modname)
                    except UnicodeDecodeError:
                        if onerror:
                            onerror(modname)
                        continue
                    desc = source_synopsis(io.StringIO(source)) or ''
                    if hasattr(loader, 'get_filename'):
                        path = loader.get_filename(modname)
                    else:
                        path = None
                else:
                    try:
                        module = loader.load_module(modname)
                    except ImportError:
                        if onerror:
                            onerror(modname)
                        continue
                    desc = (module.__doc__ or '').splitlines()[0]
                    path = getattr(module,'__file__',None)
                name = modname + ' - ' + desc
                if name.lower().find(key) >= 0:
                    callback(path, modname, desc)

        if completer:
            completer()

def apropos(key):
    """Print all the one-line module summaries that contain a substring."""
    def callback(path, modname, desc):
        if modname[-9:] == '.__init__':
            modname = modname[:-9] + ' (package)'
        print(modname, desc and '- ' + desc)
    def onerror(modname):
        pass
    with warnings.catch_warnings():
        warnings.filterwarnings('ignore') # ignore problems during import
        ModuleScanner().run(callback, key, onerror=onerror)

# --------------------------------------- enhanced Web browser interface

def _start_server(urlhandler, port):
    """Start an HTTP server thread on a specific port.

    Start an HTML/text server thread, so HTML or text documents can be
    browsed dynamically and interactively with a Web browser.  Example use:

        >>> import time
        >>> import pydoc

        Define a URL handler.  To determine what the client is asking
        for, check the URL and content_type.

        Then get or generate some text or HTML code and return it.

        >>> def my_url_handler(url, content_type):
        ...     text = 'the URL sent was: (%s, %s)' % (url, content_type)
        ...     return text

        Start server thread on port 0.
        If you use port 0, the server will pick a random port number.
        You can then use serverthread.port to get the port number.

        >>> port = 0
        >>> serverthread = pydoc._start_server(my_url_handler, port)

        Check that the server is really started.  If it is, open browser
        and get first page.  Use serverthread.url as the starting page.

        >>> if serverthread.serving:
        ...    import webbrowser

        The next two lines are commented out so a browser doesn't open if
        doctest is run on this module.

        #...    webbrowser.open(serverthread.url)
        #True

        Let the server do its thing. We just need to monitor its status.
        Use time.sleep so the loop doesn't hog the CPU.

        >>> starttime = time.time()
        >>> timeout = 1                    #seconds

        This is a short timeout for testing purposes.

        >>> while serverthread.serving:
        ...     time.sleep(.01)
        ...     if serverthread.serving and time.time() - starttime > timeout:
        ...          serverthread.stop()
        ...          break

        Print any errors that may have occurred.

        >>> print(serverthread.error)
        None
   """
    import http.server
    import email.message
    import select
    import threading

    class DocHandler(http.server.BaseHTTPRequestHandler):

        def do_GET(self):
            """Process a request from an HTML browser.

            The URL received is in self.path.
            Get an HTML page from self.urlhandler and send it.
            """
            if self.path.endswith('.css'):
                content_type = 'text/css'
            else:
                content_type = 'text/html'
            self.send_response(200)
            self.send_header('Content-Type', '%s; charset=UTF-8' % content_type)
            self.end_headers()
            self.wfile.write(self.urlhandler(
                self.path, content_type).encode('utf-8'))

        def log_message(self, *args):
            # Don't log messages.
            pass

    class DocServer(http.server.HTTPServer):

        def __init__(self, port, callback):
            self.host = (sys.platform == 'mac') and '127.0.0.1' or 'localhost'
            self.address = ('', port)
            self.callback = callback
            self.base.__init__(self, self.address, self.handler)
            self.quit = False

        def serve_until_quit(self):
            while not self.quit:
                rd, wr, ex = select.select([self.socket.fileno()], [], [], 1)
                if rd:
                    self.handle_request()
            self.server_close()

        def server_activate(self):
            self.base.server_activate(self)
            if self.callback:
                self.callback(self)

    class ServerThread(threading.Thread):

        def __init__(self, urlhandler, port):
            self.urlhandler = urlhandler
            self.port = int(port)
            threading.Thread.__init__(self)
            self.serving = False
            self.error = None

        def run(self):
            """Start the server."""
            try:
                DocServer.base = http.server.HTTPServer
                DocServer.handler = DocHandler
                DocHandler.MessageClass = email.message.Message
                DocHandler.urlhandler = staticmethod(self.urlhandler)
                docsvr = DocServer(self.port, self.ready)
                self.docserver = docsvr
                docsvr.serve_until_quit()
            except Exception as e:
                self.error = e

        def ready(self, server):
            self.serving = True
            self.host = server.host
            self.port = server.server_port
            self.url = 'http://%s:%d/' % (self.host, self.port)

        def stop(self):
            """Stop the server and this thread nicely"""
            self.docserver.quit = True
            self.serving = False
            self.url = None

    thread = ServerThread(urlhandler, port)
    thread.start()
    # Wait until thread.serving is True to make sure we are
    # really up before returning.
    while not thread.error and not thread.serving:
        time.sleep(.01)
    return thread


def _url_handler(url, content_type="text/html"):
    """The pydoc url handler for use with the pydoc server.

    If the content_type is 'text/css', the _pydoc.css style
    sheet is read and returned if it exits.

    If the content_type is 'text/html', then the result of
    get_html_page(url) is returned.
    """
    class _HTMLDoc(HTMLDoc):

        def page(self, title, contents):
            """Format an HTML page."""
            css_path = "pydoc_data/_pydoc.css"
            css_link = (
                '<link rel="stylesheet" type="text/css" href="%s">' %
                css_path)
            return '''\
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><head><title>Pydoc: %s</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
%s</head><body bgcolor="#f0f0f8">%s<div style="clear:both;padding-top:.5em;">%s</div>
</body></html>''' % (title, css_link, html_navbar(), contents)

        def filelink(self, url, path):
            return '<a href="getfile?key=%s">%s</a>' % (url, path)


    html = _HTMLDoc()

    def html_navbar():
        version = html.escape("%s [%s, %s]" % (platform.python_version(),
                                               platform.python_build()[0],
                                               platform.python_compiler()))
        return """
            <div style='float:left'>
                Python %s<br>%s
            </div>
            <div style='float:right'>
                <div style='text-align:center'>
                  <a href="index.html">Module Index</a>
                  : <a href="topics.html">Topics</a>
                  : <a href="keywords.html">Keywords</a>
                </div>
                <div>
                    <form action="get" style='display:inline;'>
                      <input type=text name=key size=15>
                      <input type=submit value="Get">
                    </form>&nbsp;
                    <form action="search" style='display:inline;'>
                      <input type=text name=key size=15>
                      <input type=submit value="Search">
                    </form>
                </div>
            </div>
            """ % (version, html.escape(platform.platform(terse=True)))

    def html_index():
        """Module Index page."""

        def bltinlink(name):
            return '<a href="%s.html">%s</a>' % (name, name)

        heading = html.heading(
            '<big><big><strong>Index of Modules</strong></big></big>',
            '#ffffff', '#7799ee')
        names = [name for name in sys.builtin_module_names
                 if name != '__main__']
        contents = html.multicolumn(names, bltinlink)
        contents = [heading, '<p>' + html.bigsection(
            'Built-in Modules', '#ffffff', '#ee77aa', contents)]

        seen = {}
        for dir in sys.path:
            contents.append(html.index(dir, seen))

        contents.append(
            '<p align=right><font color="#909090" face="helvetica,'
            'arial"><strong>pydoc</strong> by Ka-Ping Yee'
            '&lt;ping@lfw.org&gt;</font>')
        return 'Index of Modules', ''.join(contents)

    def html_search(key):
        """Search results page."""
        # scan for modules
        search_result = []

        def callback(path, modname, desc):
            if modname[-9:] == '.__init__':
                modname = modname[:-9] + ' (package)'
            search_result.append((modname, desc and '- ' + desc))

        with warnings.catch_warnings():
            warnings.filterwarnings('ignore') # ignore problems during import
            ModuleScanner().run(callback, key)

        # format page
        def bltinlink(name):
            return '<a href="%s.html">%s</a>' % (name, name)

        results = []
        heading = html.heading(
            '<big><big><strong>Search Results</strong></big></big>',
            '#ffffff', '#7799ee')
        for name, desc in search_result:
            results.append(bltinlink(name) + desc)
        contents = heading + html.bigsection(
            'key = %s' % key, '#ffffff', '#ee77aa', '<br>'.join(results))
        return 'Search Results', contents

    def html_getfile(path):
        """Get and display a source file listing safely."""
        path = path.replace('%20', ' ')
        with tokenize.open(path) as fp:
            lines = html.escape(fp.read())
        body = '<pre>%s</pre>' % lines
        heading = html.heading(
            '<big><big><strong>File Listing</strong></big></big>',
            '#ffffff', '#7799ee')
        contents = heading + html.bigsection(
            'File: %s' % path, '#ffffff', '#ee77aa', body)
        return 'getfile %s' % path, contents

    def html_topics():
        """Index of topic texts available."""

        def bltinlink(name):
            return '<a href="topic?key=%s">%s</a>' % (name, name)

        heading = html.heading(
            '<big><big><strong>INDEX</strong></big></big>',
            '#ffffff', '#7799ee')
        names = sorted(Helper.topics.keys())

        contents = html.multicolumn(names, bltinlink)
        contents = heading + html.bigsection(
            'Topics', '#ffffff', '#ee77aa', contents)
        return 'Topics', contents

    def html_keywords():
        """Index of keywords."""
        heading = html.heading(
            '<big><big><strong>INDEX</strong></big></big>',
            '#ffffff', '#7799ee')
        names = sorted(Helper.keywords.keys())

        def bltinlink(name):
            return '<a href="topic?key=%s">%s</a>' % (name, name)

        contents = html.multicolumn(names, bltinlink)
        contents = heading + html.bigsection(
            'Keywords', '#ffffff', '#ee77aa', contents)
        return 'Keywords', contents

    def html_topicpage(topic):
        """Topic or keyword help page."""
        buf = io.StringIO()
        htmlhelp = Helper(buf, buf)
        contents, xrefs = htmlhelp._gettopic(topic)
        if topic in htmlhelp.keywords:
            title = 'KEYWORD'
        else:
            title = 'TOPIC'
        heading = html.heading(
            '<big><big><strong>%s</strong></big></big>' % title,
            '#ffffff', '#7799ee')
        contents = '<pre>%s</pre>' % html.markup(contents)
        contents = html.bigsection(topic , '#ffffff','#ee77aa', contents)
        if xrefs:
            xrefs = sorted(xrefs.split())

            def bltinlink(name):
                return '<a href="topic?key=%s">%s</a>' % (name, name)

            xrefs = html.multicolumn(xrefs, bltinlink)
            xrefs = html.section('Related help topics: ',
                                 '#ffffff', '#ee77aa', xrefs)
        return ('%s %s' % (title, topic),
                ''.join((heading, contents, xrefs)))

    def html_getobj(url):
        obj = locate(url, forceload=1)
        if obj is None and url != 'None':
            raise ValueError('could not find object')
        title = describe(obj)
        content = html.document(obj, url)
        return title, content

    def html_error(url, exc):
        heading = html.heading(
            '<big><big><strong>Error</strong></big></big>',
            '#ffffff', '#7799ee')
        contents = '<br>'.join(html.escape(line) for line in
                               format_exception_only(type(exc), exc))
        contents = heading + html.bigsection(url, '#ffffff', '#bb0000',
                                             contents)
        return "Error - %s" % url, contents

    def get_html_page(url):
        """Generate an HTML page for url."""
        complete_url = url
        if url.endswith('.html'):
            url = url[:-5]
        try:
            if url in ("", "index"):
                title, content = html_index()
            elif url == "topics":
                title, content = html_topics()
            elif url == "keywords":
                title, content = html_keywords()
            elif '=' in url:
                op, _, url = url.partition('=')
                if op == "search?key":
                    title, content = html_search(url)
                elif op == "getfile?key":
                    title, content = html_getfile(url)
                elif op == "topic?key":
                    # try topics first, then objects.
                    try:
                        title, content = html_topicpage(url)
                    except ValueError:
                        title, content = html_getobj(url)
                elif op == "get?key":
                    # try objects first, then topics.
                    if url in ("", "index"):
                        title, content = html_index()
                    else:
                        try:
                            title, content = html_getobj(url)
                        except ValueError:
                            title, content = html_topicpage(url)
                else:
                    raise ValueError('bad pydoc url')
            else:
                title, content = html_getobj(url)
        except Exception as exc:
            # Catch any errors and display them in an error page.
            title, content = html_error(complete_url, exc)
        return html.page(title, content)

    if url.startswith('/'):
        url = url[1:]
    if content_type == 'text/css':
        path_here = os.path.dirname(os.path.realpath(__file__))
        css_path = os.path.join(path_here, url)
        with open(css_path) as fp:
            return ''.join(fp.readlines())
    elif content_type == 'text/html':
        return get_html_page(url)
    # Errors outside the url handler are caught by the server.
    raise TypeError('unknown content type %r for url %s' % (content_type, url))


def browse(port=0, *, open_browser=True):
    """Start the enhanced pydoc Web server and open a Web browser.

    Use port '0' to start the server on an arbitrary port.
    Set open_browser to False to suppress opening a browser.
    """
    import webbrowser
    serverthread = _start_server(_url_handler, port)
    if serverthread.error:
        print(serverthread.error)
        return
    if serverthread.serving:
        server_help_msg = 'Server commands: [b]rowser, [q]uit'
        if open_browser:
            webbrowser.open(serverthread.url)
        try:
            print('Server ready at', serverthread.url)
            print(server_help_msg)
            while serverthread.serving:
                cmd = input('server> ')
                cmd = cmd.lower()
                if cmd == 'q':
                    break
                elif cmd == 'b':
                    webbrowser.open(serverthread.url)
                else:
                    print(server_help_msg)
        except (KeyboardInterrupt, EOFError):
            print()
        finally:
            if serverthread.serving:
                serverthread.stop()
                print('Server stopped')


# -------------------------------------------------- command-line interface

def ispath(x):
    return isinstance(x, str) and x.find(os.sep) >= 0

def cli():
    """Command-line interface (looks at sys.argv to decide what to do)."""
    import getopt
    class BadUsage(Exception): pass

    # Scripts don't get the current directory in their path by default
    # unless they are run with the '-m' switch
    if '' not in sys.path:
        scriptdir = os.path.dirname(sys.argv[0])
        if scriptdir in sys.path:
            sys.path.remove(scriptdir)
        sys.path.insert(0, '.')

    try:
        opts, args = getopt.getopt(sys.argv[1:], 'bk:p:w')
        writing = False
        start_server = False
        open_browser = False
        port = None
        for opt, val in opts:
            if opt == '-b':
                start_server = True
                open_browser = True
            if opt == '-k':
                apropos(val)
                return
            if opt == '-p':
                start_server = True
                port = val
            if opt == '-w':
                writing = True

        if start_server == True:
            if port == None:
                port = 0
            browse(port, open_browser=open_browser)
            return

        if not args: raise BadUsage
        for arg in args:
            if ispath(arg) and not os.path.exists(arg):
                print('file %r does not exist' % arg)
                break
            try:
                if ispath(arg) and os.path.isfile(arg):
                    arg = importfile(arg)
                if writing:
                    if ispath(arg) and os.path.isdir(arg):
                        writedocs(arg)
                    else:
                        writedoc(arg)
                else:
                    help.help(arg)
            except ErrorDuringImport as value:
                print(value)

    except (getopt.error, BadUsage):
        cmd = os.path.splitext(os.path.basename(sys.argv[0]))[0]
        print("""pydoc - the Python documentation tool

{cmd} <name> ...
    Show text documentation on something.  <name> may be the name of a
    Python keyword, topic, function, module, or package, or a dotted
    reference to a class or function within a module or module in a
    package.  If <name> contains a '{sep}', it is used as the path to a
    Python source file to document. If name is 'keywords', 'topics',
    or 'modules', a listing of these things is displayed.

{cmd} -k <keyword>
    Search for a keyword in the synopsis lines of all available modules.

{cmd} -p <port>
    Start an HTTP server on the given port on the local machine.  Port
    number 0 can be used to get an arbitrary unused port.

{cmd} -b
    Start an HTTP server on an arbitrary unused port and open a Web browser
    to interactively browse documentation.  The -p option can be used with
    the -b option to explicitly specify the server port.

{cmd} -w <name> ...
    Write out the HTML documentation for a module to a file in the current
    directory.  If <name> contains a '{sep}', it is treated as a filename; if
    it names a directory, documentation is written for all the contents.
""".format(cmd=cmd, sep=os.sep))

if __name__ == '__main__':
    cli()
750'>2750</a>
<a id='n2751' href='#n2751'>2751</a>
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<a id='n2849' href='#n2849'>2849</a>
<a id='n2850' href='#n2850'>2850</a>
<a id='n2851' href='#n2851'>2851</a>
<a id='n2852' href='#n2852'>2852</a>
<a id='n2853' href='#n2853'>2853</a>
<a id='n2854' href='#n2854'>2854</a>
<a id='n2855' href='#n2855'>2855</a>
<a id='n2856' href='#n2856'>2856</a>
<a id='n2857' href='#n2857'>2857</a>
<a id='n2858' href='#n2858'>2858</a>
<a id='n2859' href='#n2859'>2859</a>
<a id='n2860' href='#n2860'>2860</a>
<a id='n2861' href='#n2861'>2861</a>
<a id='n2862' href='#n2862'>2862</a>
<a id='n2863' href='#n2863'>2863</a>
<a id='n2864' href='#n2864'>2864</a>
<a id='n2865' href='#n2865'>2865</a>
<a id='n2866' href='#n2866'>2866</a>
<a id='n2867' href='#n2867'>2867</a>
<a id='n2868' href='#n2868'>2868</a>
<a id='n2869' href='#n2869'>2869</a>
<a id='n2870' href='#n2870'>2870</a>
<a id='n2871' href='#n2871'>2871</a>
<a id='n2872' href='#n2872'>2872</a>
<a id='n2873' href='#n2873'>2873</a>
<a id='n2874' href='#n2874'>2874</a>
<a id='n2875' href='#n2875'>2875</a>
<a id='n2876' href='#n2876'>2876</a>
<a id='n2877' href='#n2877'>2877</a>
<a id='n2878' href='#n2878'>2878</a>
<a id='n2879' href='#n2879'>2879</a>
<a id='n2880' href='#n2880'>2880</a>
<a id='n2881' href='#n2881'>2881</a>
<a id='n2882' href='#n2882'>2882</a>
<a id='n2883' href='#n2883'>2883</a>
<a id='n2884' href='#n2884'>2884</a>
<a id='n2885' href='#n2885'>2885</a>
<a id='n2886' href='#n2886'>2886</a>
<a id='n2887' href='#n2887'>2887</a>
<a id='n2888' href='#n2888'>2888</a>
<a id='n2889' href='#n2889'>2889</a>
<a id='n2890' href='#n2890'>2890</a>
<a id='n2891' href='#n2891'>2891</a>
<a id='n2892' href='#n2892'>2892</a>
<a id='n2893' href='#n2893'>2893</a>
<a id='n2894' href='#n2894'>2894</a>
<a id='n2895' href='#n2895'>2895</a>
<a id='n2896' href='#n2896'>2896</a>
<a id='n2897' href='#n2897'>2897</a>
<a id='n2898' href='#n2898'>2898</a>
<a id='n2899' href='#n2899'>2899</a>
<a id='n2900' href='#n2900'>2900</a>
<a id='n2901' href='#n2901'>2901</a>
<a id='n2902' href='#n2902'>2902</a>
<a id='n2903' href='#n2903'>2903</a>
<a id='n2904' href='#n2904'>2904</a>
<a id='n2905' href='#n2905'>2905</a>
<a id='n2906' href='#n2906'>2906</a>
<a id='n2907' href='#n2907'>2907</a>
<a id='n2908' href='#n2908'>2908</a>
<a id='n2909' href='#n2909'>2909</a>
<a id='n2910' href='#n2910'>2910</a>
<a id='n2911' href='#n2911'>2911</a>
<a id='n2912' href='#n2912'>2912</a>
<a id='n2913' href='#n2913'>2913</a>
<a id='n2914' href='#n2914'>2914</a>
<a id='n2915' href='#n2915'>2915</a>
<a id='n2916' href='#n2916'>2916</a>
<a id='n2917' href='#n2917'>2917</a>
<a id='n2918' href='#n2918'>2918</a>
<a id='n2919' href='#n2919'>2919</a>
<a id='n2920' href='#n2920'>2920</a>
<a id='n2921' href='#n2921'>2921</a>
<a id='n2922' href='#n2922'>2922</a>
<a id='n2923' href='#n2923'>2923</a>
<a id='n2924' href='#n2924'>2924</a>
<a id='n2925' href='#n2925'>2925</a>
<a id='n2926' href='#n2926'>2926</a>
<a id='n2927' href='#n2927'>2927</a>
<a id='n2928' href='#n2928'>2928</a>
<a id='n2929' href='#n2929'>2929</a>
<a id='n2930' href='#n2930'>2930</a>
<a id='n2931' href='#n2931'>2931</a>
<a id='n2932' href='#n2932'>2932</a>
<a id='n2933' href='#n2933'>2933</a>
<a id='n2934' href='#n2934'>2934</a>
<a id='n2935' href='#n2935'>2935</a>
<a id='n2936' href='#n2936'>2936</a>
<a id='n2937' href='#n2937'>2937</a>
<a id='n2938' href='#n2938'>2938</a>
<a id='n2939' href='#n2939'>2939</a>
<a id='n2940' href='#n2940'>2940</a>
<a id='n2941' href='#n2941'>2941</a>
<a id='n2942' href='#n2942'>2942</a>
<a id='n2943' href='#n2943'>2943</a>
<a id='n2944' href='#n2944'>2944</a>
<a id='n2945' href='#n2945'>2945</a>
<a id='n2946' href='#n2946'>2946</a>
<a id='n2947' href='#n2947'>2947</a>
<a id='n2948' href='#n2948'>2948</a>
<a id='n2949' href='#n2949'>2949</a>
<a id='n2950' href='#n2950'>2950</a>
<a id='n2951' href='#n2951'>2951</a>
<a id='n2952' href='#n2952'>2952</a>
<a id='n2953' href='#n2953'>2953</a>
<a id='n2954' href='#n2954'>2954</a>
<a id='n2955' href='#n2955'>2955</a>
<a id='n2956' href='#n2956'>2956</a>
<a id='n2957' href='#n2957'>2957</a>
<a id='n2958' href='#n2958'>2958</a>
<a id='n2959' href='#n2959'>2959</a>
<a id='n2960' href='#n2960'>2960</a>
<a id='n2961' href='#n2961'>2961</a>
<a id='n2962' href='#n2962'>2962</a>
<a id='n2963' href='#n2963'>2963</a>
<a id='n2964' href='#n2964'>2964</a>
<a id='n2965' href='#n2965'>2965</a>
<a id='n2966' href='#n2966'>2966</a>
<a id='n2967' href='#n2967'>2967</a>
<a id='n2968' href='#n2968'>2968</a>
<a id='n2969' href='#n2969'>2969</a>
<a id='n2970' href='#n2970'>2970</a>
<a id='n2971' href='#n2971'>2971</a>
<a id='n2972' href='#n2972'>2972</a>
<a id='n2973' href='#n2973'>2973</a>
<a id='n2974' href='#n2974'>2974</a>
<a id='n2975' href='#n2975'>2975</a>
<a id='n2976' href='#n2976'>2976</a>
<a id='n2977' href='#n2977'>2977</a>
<a id='n2978' href='#n2978'>2978</a>
<a id='n2979' href='#n2979'>2979</a>
<a id='n2980' href='#n2980'>2980</a>
<a id='n2981' href='#n2981'>2981</a>
<a id='n2982' href='#n2982'>2982</a>
<a id='n2983' href='#n2983'>2983</a>
<a id='n2984' href='#n2984'>2984</a>
<a id='n2985' href='#n2985'>2985</a>
<a id='n2986' href='#n2986'>2986</a>
<a id='n2987' href='#n2987'>2987</a>
<a id='n2988' href='#n2988'>2988</a>
<a id='n2989' href='#n2989'>2989</a>
<a id='n2990' href='#n2990'>2990</a>
<a id='n2991' href='#n2991'>2991</a>
<a id='n2992' href='#n2992'>2992</a>
<a id='n2993' href='#n2993'>2993</a>
<a id='n2994' href='#n2994'>2994</a>
<a id='n2995' href='#n2995'>2995</a>
<a id='n2996' href='#n2996'>2996</a>
<a id='n2997' href='#n2997'>2997</a>
<a id='n2998' href='#n2998'>2998</a>
<a id='n2999' href='#n2999'>2999</a>
<a id='n3000' href='#n3000'>3000</a>
<a id='n3001' href='#n3001'>3001</a>
<a id='n3002' href='#n3002'>3002</a>
<a id='n3003' href='#n3003'>3003</a>
<a id='n3004' href='#n3004'>3004</a>
<a id='n3005' href='#n3005'>3005</a>
<a id='n3006' href='#n3006'>3006</a>
<a id='n3007' href='#n3007'>3007</a>
<a id='n3008' href='#n3008'>3008</a>
<a id='n3009' href='#n3009'>3009</a>
<a id='n3010' href='#n3010'>3010</a>
<a id='n3011' href='#n3011'>3011</a>
<a id='n3012' href='#n3012'>3012</a>
<a id='n3013' href='#n3013'>3013</a>
<a id='n3014' href='#n3014'>3014</a>
<a id='n3015' href='#n3015'>3015</a>
<a id='n3016' href='#n3016'>3016</a>
<a id='n3017' href='#n3017'>3017</a>
<a id='n3018' href='#n3018'>3018</a>
<a id='n3019' href='#n3019'>3019</a>
<a id='n3020' href='#n3020'>3020</a>
<a id='n3021' href='#n3021'>3021</a>
<a id='n3022' href='#n3022'>3022</a>
<a id='n3023' href='#n3023'>3023</a>
<a id='n3024' href='#n3024'>3024</a>
<a id='n3025' href='#n3025'>3025</a>
<a id='n3026' href='#n3026'>3026</a>
<a id='n3027' href='#n3027'>3027</a>
<a id='n3028' href='#n3028'>3028</a>
<a id='n3029' href='#n3029'>3029</a>
<a id='n3030' href='#n3030'>3030</a>
<a id='n3031' href='#n3031'>3031</a>
<a id='n3032' href='#n3032'>3032</a>
<a id='n3033' href='#n3033'>3033</a>
<a id='n3034' href='#n3034'>3034</a>
<a id='n3035' href='#n3035'>3035</a>
<a id='n3036' href='#n3036'>3036</a>
<a id='n3037' href='#n3037'>3037</a>
<a id='n3038' href='#n3038'>3038</a>
<a id='n3039' href='#n3039'>3039</a>
<a id='n3040' href='#n3040'>3040</a>
<a id='n3041' href='#n3041'>3041</a>
<a id='n3042' href='#n3042'>3042</a>
<a id='n3043' href='#n3043'>3043</a>
<a id='n3044' href='#n3044'>3044</a>
<a id='n3045' href='#n3045'>3045</a>
<a id='n3046' href='#n3046'>3046</a>
<a id='n3047' href='#n3047'>3047</a>
<a id='n3048' href='#n3048'>3048</a>
<a id='n3049' href='#n3049'>3049</a>
<a id='n3050' href='#n3050'>3050</a>
<a id='n3051' href='#n3051'>3051</a>
<a id='n3052' href='#n3052'>3052</a>
<a id='n3053' href='#n3053'>3053</a>
<a id='n3054' href='#n3054'>3054</a>
<a id='n3055' href='#n3055'>3055</a>
<a id='n3056' href='#n3056'>3056</a>
<a id='n3057' href='#n3057'>3057</a>
<a id='n3058' href='#n3058'>3058</a>
<a id='n3059' href='#n3059'>3059</a>
<a id='n3060' href='#n3060'>3060</a>
<a id='n3061' href='#n3061'>3061</a>
<a id='n3062' href='#n3062'>3062</a>
<a id='n3063' href='#n3063'>3063</a>
<a id='n3064' href='#n3064'>3064</a>
<a id='n3065' href='#n3065'>3065</a>
<a id='n3066' href='#n3066'>3066</a>
<a id='n3067' href='#n3067'>3067</a>
<a id='n3068' href='#n3068'>3068</a>
<a id='n3069' href='#n3069'>3069</a>
<a id='n3070' href='#n3070'>3070</a>
<a id='n3071' href='#n3071'>3071</a>
<a id='n3072' href='#n3072'>3072</a>
<a id='n3073' href='#n3073'>3073</a>
<a id='n3074' href='#n3074'>3074</a>
<a id='n3075' href='#n3075'>3075</a>
<a id='n3076' href='#n3076'>3076</a>
<a id='n3077' href='#n3077'>3077</a>
<a id='n3078' href='#n3078'>3078</a>
<a id='n3079' href='#n3079'>3079</a>
<a id='n3080' href='#n3080'>3080</a>
<a id='n3081' href='#n3081'>3081</a>
<a id='n3082' href='#n3082'>3082</a>
<a id='n3083' href='#n3083'>3083</a>
<a id='n3084' href='#n3084'>3084</a>
<a id='n3085' href='#n3085'>3085</a>
<a id='n3086' href='#n3086'>3086</a>
<a id='n3087' href='#n3087'>3087</a>
<a id='n3088' href='#n3088'>3088</a>
<a id='n3089' href='#n3089'>3089</a>
<a id='n3090' href='#n3090'>3090</a>
<a id='n3091' href='#n3091'>3091</a>
<a id='n3092' href='#n3092'>3092</a>
<a id='n3093' href='#n3093'>3093</a>
<a id='n3094' href='#n3094'>3094</a>
<a id='n3095' href='#n3095'>3095</a>
<a id='n3096' href='#n3096'>3096</a>
<a id='n3097' href='#n3097'>3097</a>
<a id='n3098' href='#n3098'>3098</a>
<a id='n3099' href='#n3099'>3099</a>
<a id='n3100' href='#n3100'>3100</a>
<a id='n3101' href='#n3101'>3101</a>
<a id='n3102' href='#n3102'>3102</a>
<a id='n3103' href='#n3103'>3103</a>
<a id='n3104' href='#n3104'>3104</a>
<a id='n3105' href='#n3105'>3105</a>
<a id='n3106' href='#n3106'>3106</a>
<a id='n3107' href='#n3107'>3107</a>
<a id='n3108' href='#n3108'>3108</a>
<a id='n3109' href='#n3109'>3109</a>
<a id='n3110' href='#n3110'>3110</a>
<a id='n3111' href='#n3111'>3111</a>
<a id='n3112' href='#n3112'>3112</a>
<a id='n3113' href='#n3113'>3113</a>
<a id='n3114' href='#n3114'>3114</a>
<a id='n3115' href='#n3115'>3115</a>
<a id='n3116' href='#n3116'>3116</a>
<a id='n3117' href='#n3117'>3117</a>
<a id='n3118' href='#n3118'>3118</a>
<a id='n3119' href='#n3119'>3119</a>
<a id='n3120' href='#n3120'>3120</a>
<a id='n3121' href='#n3121'>3121</a>
<a id='n3122' href='#n3122'>3122</a>
<a id='n3123' href='#n3123'>3123</a>
<a id='n3124' href='#n3124'>3124</a>
<a id='n3125' href='#n3125'>3125</a>
<a id='n3126' href='#n3126'>3126</a>
<a id='n3127' href='#n3127'>3127</a>
<a id='n3128' href='#n3128'>3128</a>
<a id='n3129' href='#n3129'>3129</a>
<a id='n3130' href='#n3130'>3130</a>
<a id='n3131' href='#n3131'>3131</a>
<a id='n3132' href='#n3132'>3132</a>
<a id='n3133' href='#n3133'>3133</a>
<a id='n3134' href='#n3134'>3134</a>
<a id='n3135' href='#n3135'>3135</a>
<a id='n3136' href='#n3136'>3136</a>
<a id='n3137' href='#n3137'>3137</a>
<a id='n3138' href='#n3138'>3138</a>
<a id='n3139' href='#n3139'>3139</a>
<a id='n3140' href='#n3140'>3140</a>
<a id='n3141' href='#n3141'>3141</a>
<a id='n3142' href='#n3142'>3142</a>
<a id='n3143' href='#n3143'>3143</a>
<a id='n3144' href='#n3144'>3144</a>
<a id='n3145' href='#n3145'>3145</a>
<a id='n3146' href='#n3146'>3146</a>
<a id='n3147' href='#n3147'>3147</a>
<a id='n3148' href='#n3148'>3148</a>
<a id='n3149' href='#n3149'>3149</a>
<a id='n3150' href='#n3150'>3150</a>
<a id='n3151' href='#n3151'>3151</a>
<a id='n3152' href='#n3152'>3152</a>
<a id='n3153' href='#n3153'>3153</a>
<a id='n3154' href='#n3154'>3154</a>
<a id='n3155' href='#n3155'>3155</a>
<a id='n3156' href='#n3156'>3156</a>
<a id='n3157' href='#n3157'>3157</a>
<a id='n3158' href='#n3158'>3158</a>
<a id='n3159' href='#n3159'>3159</a>
<a id='n3160' href='#n3160'>3160</a>
<a id='n3161' href='#n3161'>3161</a>
<a id='n3162' href='#n3162'>3162</a>
<a id='n3163' href='#n3163'>3163</a>
<a id='n3164' href='#n3164'>3164</a>
<a id='n3165' href='#n3165'>3165</a>
<a id='n3166' href='#n3166'>3166</a>
<a id='n3167' href='#n3167'>3167</a>
<a id='n3168' href='#n3168'>3168</a>
<a id='n3169' href='#n3169'>3169</a>
<a id='n3170' href='#n3170'>3170</a>
<a id='n3171' href='#n3171'>3171</a>
<a id='n3172' href='#n3172'>3172</a>
<a id='n3173' href='#n3173'>3173</a>
<a id='n3174' href='#n3174'>3174</a>
<a id='n3175' href='#n3175'>3175</a>
<a id='n3176' href='#n3176'>3176</a>
<a id='n3177' href='#n3177'>3177</a>
<a id='n3178' href='#n3178'>3178</a>
<a id='n3179' href='#n3179'>3179</a>
<a id='n3180' href='#n3180'>3180</a>
<a id='n3181' href='#n3181'>3181</a>
<a id='n3182' href='#n3182'>3182</a>
<a id='n3183' href='#n3183'>3183</a>
<a id='n3184' href='#n3184'>3184</a>
<a id='n3185' href='#n3185'>3185</a>
<a id='n3186' href='#n3186'>3186</a>
<a id='n3187' href='#n3187'>3187</a>
<a id='n3188' href='#n3188'>3188</a>
<a id='n3189' href='#n3189'>3189</a>
<a id='n3190' href='#n3190'>3190</a>
<a id='n3191' href='#n3191'>3191</a>
<a id='n3192' href='#n3192'>3192</a>
<a id='n3193' href='#n3193'>3193</a>
<a id='n3194' href='#n3194'>3194</a>
<a id='n3195' href='#n3195'>3195</a>
<a id='n3196' href='#n3196'>3196</a>
<a id='n3197' href='#n3197'>3197</a>
<a id='n3198' href='#n3198'>3198</a>
<a id='n3199' href='#n3199'>3199</a>
<a id='n3200' href='#n3200'>3200</a>
<a id='n3201' href='#n3201'>3201</a>
<a id='n3202' href='#n3202'>3202</a>
<a id='n3203' href='#n3203'>3203</a>
<a id='n3204' href='#n3204'>3204</a>
<a id='n3205' href='#n3205'>3205</a>
<a id='n3206' href='#n3206'>3206</a>
<a id='n3207' href='#n3207'>3207</a>
<a id='n3208' href='#n3208'>3208</a>
<a id='n3209' href='#n3209'>3209</a>
<a id='n3210' href='#n3210'>3210</a>
<a id='n3211' href='#n3211'>3211</a>
<a id='n3212' href='#n3212'>3212</a>
<a id='n3213' href='#n3213'>3213</a>
<a id='n3214' href='#n3214'>3214</a>
<a id='n3215' href='#n3215'>3215</a>
<a id='n3216' href='#n3216'>3216</a>
<a id='n3217' href='#n3217'>3217</a>
<a id='n3218' href='#n3218'>3218</a>
<a id='n3219' href='#n3219'>3219</a>
<a id='n3220' href='#n3220'>3220</a>
<a id='n3221' href='#n3221'>3221</a>
<a id='n3222' href='#n3222'>3222</a>
<a id='n3223' href='#n3223'>3223</a>
<a id='n3224' href='#n3224'>3224</a>
<a id='n3225' href='#n3225'>3225</a>
<a id='n3226' href='#n3226'>3226</a>
<a id='n3227' href='#n3227'>3227</a>
<a id='n3228' href='#n3228'>3228</a>
<a id='n3229' href='#n3229'>3229</a>
<a id='n3230' href='#n3230'>3230</a>
<a id='n3231' href='#n3231'>3231</a>
<a id='n3232' href='#n3232'>3232</a>
<a id='n3233' href='#n3233'>3233</a>
<a id='n3234' href='#n3234'>3234</a>
<a id='n3235' href='#n3235'>3235</a>
<a id='n3236' href='#n3236'>3236</a>
<a id='n3237' href='#n3237'>3237</a>
<a id='n3238' href='#n3238'>3238</a>
<a id='n3239' href='#n3239'>3239</a>
<a id='n3240' href='#n3240'>3240</a>
<a id='n3241' href='#n3241'>3241</a>
<a id='n3242' href='#n3242'>3242</a>
<a id='n3243' href='#n3243'>3243</a>
<a id='n3244' href='#n3244'>3244</a>
<a id='n3245' href='#n3245'>3245</a>
<a id='n3246' href='#n3246'>3246</a>
<a id='n3247' href='#n3247'>3247</a>
<a id='n3248' href='#n3248'>3248</a>
<a id='n3249' href='#n3249'>3249</a>
<a id='n3250' href='#n3250'>3250</a>
<a id='n3251' href='#n3251'>3251</a>
<a id='n3252' href='#n3252'>3252</a>
<a id='n3253' href='#n3253'>3253</a>
<a id='n3254' href='#n3254'>3254</a>
<a id='n3255' href='#n3255'>3255</a>
<a id='n3256' href='#n3256'>3256</a>
<a id='n3257' href='#n3257'>3257</a>
<a id='n3258' href='#n3258'>3258</a>
<a id='n3259' href='#n3259'>3259</a>
<a id='n3260' href='#n3260'>3260</a>
<a id='n3261' href='#n3261'>3261</a>
<a id='n3262' href='#n3262'>3262</a>
<a id='n3263' href='#n3263'>3263</a>
<a id='n3264' href='#n3264'>3264</a>
<a id='n3265' href='#n3265'>3265</a>
<a id='n3266' href='#n3266'>3266</a>
<a id='n3267' href='#n3267'>3267</a>
<a id='n3268' href='#n3268'>3268</a>
<a id='n3269' href='#n3269'>3269</a>
<a id='n3270' href='#n3270'>3270</a>
<a id='n3271' href='#n3271'>3271</a>
<a id='n3272' href='#n3272'>3272</a>
<a id='n3273' href='#n3273'>3273</a>
<a id='n3274' href='#n3274'>3274</a>
<a id='n3275' href='#n3275'>3275</a>
<a id='n3276' href='#n3276'>3276</a>
<a id='n3277' href='#n3277'>3277</a>
<a id='n3278' href='#n3278'>3278</a>
<a id='n3279' href='#n3279'>3279</a>
<a id='n3280' href='#n3280'>3280</a>
<a id='n3281' href='#n3281'>3281</a>
<a id='n3282' href='#n3282'>3282</a>
<a id='n3283' href='#n3283'>3283</a>
<a id='n3284' href='#n3284'>3284</a>
<a id='n3285' href='#n3285'>3285</a>
<a id='n3286' href='#n3286'>3286</a>
<a id='n3287' href='#n3287'>3287</a>
<a id='n3288' href='#n3288'>3288</a>
<a id='n3289' href='#n3289'>3289</a>
<a id='n3290' href='#n3290'>3290</a>
<a id='n3291' href='#n3291'>3291</a>
<a id='n3292' href='#n3292'>3292</a>
<a id='n3293' href='#n3293'>3293</a>
<a id='n3294' href='#n3294'>3294</a>
<a id='n3295' href='#n3295'>3295</a>
<a id='n3296' href='#n3296'>3296</a>
<a id='n3297' href='#n3297'>3297</a>
<a id='n3298' href='#n3298'>3298</a>
<a id='n3299' href='#n3299'>3299</a>
<a id='n3300' href='#n3300'>3300</a>
<a id='n3301' href='#n3301'>3301</a>
<a id='n3302' href='#n3302'>3302</a>
<a id='n3303' href='#n3303'>3303</a>
<a id='n3304' href='#n3304'>3304</a>
<a id='n3305' href='#n3305'>3305</a>
<a id='n3306' href='#n3306'>3306</a>
<a id='n3307' href='#n3307'>3307</a>
<a id='n3308' href='#n3308'>3308</a>
<a id='n3309' href='#n3309'>3309</a>
<a id='n3310' href='#n3310'>3310</a>
<a id='n3311' href='#n3311'>3311</a>
<a id='n3312' href='#n3312'>3312</a>
<a id='n3313' href='#n3313'>3313</a>
<a id='n3314' href='#n3314'>3314</a>
<a id='n3315' href='#n3315'>3315</a>
<a id='n3316' href='#n3316'>3316</a>
<a id='n3317' href='#n3317'>3317</a>
<a id='n3318' href='#n3318'>3318</a>
<a id='n3319' href='#n3319'>3319</a>
<a id='n3320' href='#n3320'>3320</a>
<a id='n3321' href='#n3321'>3321</a>
<a id='n3322' href='#n3322'>3322</a>
<a id='n3323' href='#n3323'>3323</a>
<a id='n3324' href='#n3324'>3324</a>
<a id='n3325' href='#n3325'>3325</a>
<a id='n3326' href='#n3326'>3326</a>
<a id='n3327' href='#n3327'>3327</a>
<a id='n3328' href='#n3328'>3328</a>
<a id='n3329' href='#n3329'>3329</a>
<a id='n3330' href='#n3330'>3330</a>
<a id='n3331' href='#n3331'>3331</a>
<a id='n3332' href='#n3332'>3332</a>
<a id='n3333' href='#n3333'>3333</a>
<a id='n3334' href='#n3334'>3334</a>
<a id='n3335' href='#n3335'>3335</a>
<a id='n3336' href='#n3336'>3336</a>
<a id='n3337' href='#n3337'>3337</a>
<a id='n3338' href='#n3338'>3338</a>
<a id='n3339' href='#n3339'>3339</a>
<a id='n3340' href='#n3340'>3340</a>
<a id='n3341' href='#n3341'>3341</a>
<a id='n3342' href='#n3342'>3342</a>
<a id='n3343' href='#n3343'>3343</a>
<a id='n3344' href='#n3344'>3344</a>
<a id='n3345' href='#n3345'>3345</a>
<a id='n3346' href='#n3346'>3346</a>
<a id='n3347' href='#n3347'>3347</a>
<a id='n3348' href='#n3348'>3348</a>
<a id='n3349' href='#n3349'>3349</a>
<a id='n3350' href='#n3350'>3350</a>
<a id='n3351' href='#n3351'>3351</a>
<a id='n3352' href='#n3352'>3352</a>
<a id='n3353' href='#n3353'>3353</a>
<a id='n3354' href='#n3354'>3354</a>
<a id='n3355' href='#n3355'>3355</a>
<a id='n3356' href='#n3356'>3356</a>
<a id='n3357' href='#n3357'>3357</a>
<a id='n3358' href='#n3358'>3358</a>
<a id='n3359' href='#n3359'>3359</a>
<a id='n3360' href='#n3360'>3360</a>
<a id='n3361' href='#n3361'>3361</a>
<a id='n3362' href='#n3362'>3362</a>
<a id='n3363' href='#n3363'>3363</a>
<a id='n3364' href='#n3364'>3364</a>
<a id='n3365' href='#n3365'>3365</a>
<a id='n3366' href='#n3366'>3366</a>
<a id='n3367' href='#n3367'>3367</a>
<a id='n3368' href='#n3368'>3368</a>
<a id='n3369' href='#n3369'>3369</a>
<a id='n3370' href='#n3370'>3370</a>
<a id='n3371' href='#n3371'>3371</a>
<a id='n3372' href='#n3372'>3372</a>
<a id='n3373' href='#n3373'>3373</a>
<a id='n3374' href='#n3374'>3374</a>
<a id='n3375' href='#n3375'>3375</a>
<a id='n3376' href='#n3376'>3376</a>
<a id='n3377' href='#n3377'>3377</a>
<a id='n3378' href='#n3378'>3378</a>
<a id='n3379' href='#n3379'>3379</a>
<a id='n3380' href='#n3380'>3380</a>
<a id='n3381' href='#n3381'>3381</a>
<a id='n3382' href='#n3382'>3382</a>
<a id='n3383' href='#n3383'>3383</a>
<a id='n3384' href='#n3384'>3384</a>
<a id='n3385' href='#n3385'>3385</a>
<a id='n3386' href='#n3386'>3386</a>
<a id='n3387' href='#n3387'>3387</a>
<a id='n3388' href='#n3388'>3388</a>
<a id='n3389' href='#n3389'>3389</a>
<a id='n3390' href='#n3390'>3390</a>
<a id='n3391' href='#n3391'>3391</a>
<a id='n3392' href='#n3392'>3392</a>
<a id='n3393' href='#n3393'>3393</a>
<a id='n3394' href='#n3394'>3394</a>
<a id='n3395' href='#n3395'>3395</a>
<a id='n3396' href='#n3396'>3396</a>
<a id='n3397' href='#n3397'>3397</a>
<a id='n3398' href='#n3398'>3398</a>
<a id='n3399' href='#n3399'>3399</a>
<a id='n3400' href='#n3400'>3400</a>
<a id='n3401' href='#n3401'>3401</a>
<a id='n3402' href='#n3402'>3402</a>
<a id='n3403' href='#n3403'>3403</a>
<a id='n3404' href='#n3404'>3404</a>
<a id='n3405' href='#n3405'>3405</a>
<a id='n3406' href='#n3406'>3406</a>
<a id='n3407' href='#n3407'>3407</a>
<a id='n3408' href='#n3408'>3408</a>
<a id='n3409' href='#n3409'>3409</a>
<a id='n3410' href='#n3410'>3410</a>
<a id='n3411' href='#n3411'>3411</a>
<a id='n3412' href='#n3412'>3412</a>
<a id='n3413' href='#n3413'>3413</a>
<a id='n3414' href='#n3414'>3414</a>
<a id='n3415' href='#n3415'>3415</a>
<a id='n3416' href='#n3416'>3416</a>
<a id='n3417' href='#n3417'>3417</a>
<a id='n3418' href='#n3418'>3418</a>
<a id='n3419' href='#n3419'>3419</a>
<a id='n3420' href='#n3420'>3420</a>
<a id='n3421' href='#n3421'>3421</a>
<a id='n3422' href='#n3422'>3422</a>
<a id='n3423' href='#n3423'>3423</a>
<a id='n3424' href='#n3424'>3424</a>
<a id='n3425' href='#n3425'>3425</a>
<a id='n3426' href='#n3426'>3426</a>
<a id='n3427' href='#n3427'>3427</a>
<a id='n3428' href='#n3428'>3428</a>
<a id='n3429' href='#n3429'>3429</a>
<a id='n3430' href='#n3430'>3430</a>
<a id='n3431' href='#n3431'>3431</a>
<a id='n3432' href='#n3432'>3432</a>
<a id='n3433' href='#n3433'>3433</a>
<a id='n3434' href='#n3434'>3434</a>
<a id='n3435' href='#n3435'>3435</a>
<a id='n3436' href='#n3436'>3436</a>
<a id='n3437' href='#n3437'>3437</a>
<a id='n3438' href='#n3438'>3438</a>
<a id='n3439' href='#n3439'>3439</a>
<a id='n3440' href='#n3440'>3440</a>
<a id='n3441' href='#n3441'>3441</a>
<a id='n3442' href='#n3442'>3442</a>
<a id='n3443' href='#n3443'>3443</a>
<a id='n3444' href='#n3444'>3444</a>
<a id='n3445' href='#n3445'>3445</a>
<a id='n3446' href='#n3446'>3446</a>
<a id='n3447' href='#n3447'>3447</a>
<a id='n3448' href='#n3448'>3448</a>
<a id='n3449' href='#n3449'>3449</a>
<a id='n3450' href='#n3450'>3450</a>
<a id='n3451' href='#n3451'>3451</a>
<a id='n3452' href='#n3452'>3452</a>
<a id='n3453' href='#n3453'>3453</a>
<a id='n3454' href='#n3454'>3454</a>
<a id='n3455' href='#n3455'>3455</a>
<a id='n3456' href='#n3456'>3456</a>
<a id='n3457' href='#n3457'>3457</a>
<a id='n3458' href='#n3458'>3458</a>
<a id='n3459' href='#n3459'>3459</a>
<a id='n3460' href='#n3460'>3460</a>
<a id='n3461' href='#n3461'>3461</a>
<a id='n3462' href='#n3462'>3462</a>
<a id='n3463' href='#n3463'>3463</a>
<a id='n3464' href='#n3464'>3464</a>
<a id='n3465' href='#n3465'>3465</a>
<a id='n3466' href='#n3466'>3466</a>
<a id='n3467' href='#n3467'>3467</a>
<a id='n3468' href='#n3468'>3468</a>
<a id='n3469' href='#n3469'>3469</a>
<a id='n3470' href='#n3470'>3470</a>
<a id='n3471' href='#n3471'>3471</a>
<a id='n3472' href='#n3472'>3472</a>
<a id='n3473' href='#n3473'>3473</a>
<a id='n3474' href='#n3474'>3474</a>
<a id='n3475' href='#n3475'>3475</a>
<a id='n3476' href='#n3476'>3476</a>
<a id='n3477' href='#n3477'>3477</a>
<a id='n3478' href='#n3478'>3478</a>
<a id='n3479' href='#n3479'>3479</a>
<a id='n3480' href='#n3480'>3480</a>
<a id='n3481' href='#n3481'>3481</a>
<a id='n3482' href='#n3482'>3482</a>
<a id='n3483' href='#n3483'>3483</a>
<a id='n3484' href='#n3484'>3484</a>
<a id='n3485' href='#n3485'>3485</a>
<a id='n3486' href='#n3486'>3486</a>
<a id='n3487' href='#n3487'>3487</a>
<a id='n3488' href='#n3488'>3488</a>
<a id='n3489' href='#n3489'>3489</a>
<a id='n3490' href='#n3490'>3490</a>
<a id='n3491' href='#n3491'>3491</a>
<a id='n3492' href='#n3492'>3492</a>
<a id='n3493' href='#n3493'>3493</a>
<a id='n3494' href='#n3494'>3494</a>
<a id='n3495' href='#n3495'>3495</a>
<a id='n3496' href='#n3496'>3496</a>
<a id='n3497' href='#n3497'>3497</a>
<a id='n3498' href='#n3498'>3498</a>
<a id='n3499' href='#n3499'>3499</a>
<a id='n3500' href='#n3500'>3500</a>
<a id='n3501' href='#n3501'>3501</a>
<a id='n3502' href='#n3502'>3502</a>
<a id='n3503' href='#n3503'>3503</a>
<a id='n3504' href='#n3504'>3504</a>
<a id='n3505' href='#n3505'>3505</a>
<a id='n3506' href='#n3506'>3506</a>
<a id='n3507' href='#n3507'>3507</a>
<a id='n3508' href='#n3508'>3508</a>
<a id='n3509' href='#n3509'>3509</a>
<a id='n3510' href='#n3510'>3510</a>
<a id='n3511' href='#n3511'>3511</a>
<a id='n3512' href='#n3512'>3512</a>
<a id='n3513' href='#n3513'>3513</a>
<a id='n3514' href='#n3514'>3514</a>
<a id='n3515' href='#n3515'>3515</a>
<a id='n3516' href='#n3516'>3516</a>
<a id='n3517' href='#n3517'>3517</a>
<a id='n3518' href='#n3518'>3518</a>
<a id='n3519' href='#n3519'>3519</a>
<a id='n3520' href='#n3520'>3520</a>
<a id='n3521' href='#n3521'>3521</a>
<a id='n3522' href='#n3522'>3522</a>
<a id='n3523' href='#n3523'>3523</a>
<a id='n3524' href='#n3524'>3524</a>
<a id='n3525' href='#n3525'>3525</a>
<a id='n3526' href='#n3526'>3526</a>
<a id='n3527' href='#n3527'>3527</a>
<a id='n3528' href='#n3528'>3528</a>
<a id='n3529' href='#n3529'>3529</a>
<a id='n3530' href='#n3530'>3530</a>
<a id='n3531' href='#n3531'>3531</a>
<a id='n3532' href='#n3532'>3532</a>
<a id='n3533' href='#n3533'>3533</a>
<a id='n3534' href='#n3534'>3534</a>
<a id='n3535' href='#n3535'>3535</a>
<a id='n3536' href='#n3536'>3536</a>
<a id='n3537' href='#n3537'>3537</a>
<a id='n3538' href='#n3538'>3538</a>
<a id='n3539' href='#n3539'>3539</a>
<a id='n3540' href='#n3540'>3540</a>
<a id='n3541' href='#n3541'>3541</a>
<a id='n3542' href='#n3542'>3542</a>
<a id='n3543' href='#n3543'>3543</a>
<a id='n3544' href='#n3544'>3544</a>
<a id='n3545' href='#n3545'>3545</a>
<a id='n3546' href='#n3546'>3546</a>
<a id='n3547' href='#n3547'>3547</a>
<a id='n3548' href='#n3548'>3548</a>
<a id='n3549' href='#n3549'>3549</a>
<a id='n3550' href='#n3550'>3550</a>
<a id='n3551' href='#n3551'>3551</a>
<a id='n3552' href='#n3552'>3552</a>
<a id='n3553' href='#n3553'>3553</a>
<a id='n3554' href='#n3554'>3554</a>
<a id='n3555' href='#n3555'>3555</a>
<a id='n3556' href='#n3556'>3556</a>
<a id='n3557' href='#n3557'>3557</a>
<a id='n3558' href='#n3558'>3558</a>
<a id='n3559' href='#n3559'>3559</a>
<a id='n3560' href='#n3560'>3560</a>
<a id='n3561' href='#n3561'>3561</a>
<a id='n3562' href='#n3562'>3562</a>
<a id='n3563' href='#n3563'>3563</a>
<a id='n3564' href='#n3564'>3564</a>
<a id='n3565' href='#n3565'>3565</a>
<a id='n3566' href='#n3566'>3566</a>
<a id='n3567' href='#n3567'>3567</a>
<a id='n3568' href='#n3568'>3568</a>
<a id='n3569' href='#n3569'>3569</a>
<a id='n3570' href='#n3570'>3570</a>
<a id='n3571' href='#n3571'>3571</a>
<a id='n3572' href='#n3572'>3572</a>
<a id='n3573' href='#n3573'>3573</a>
<a id='n3574' href='#n3574'>3574</a>
<a id='n3575' href='#n3575'>3575</a>
<a id='n3576' href='#n3576'>3576</a>
<a id='n3577' href='#n3577'>3577</a>
<a id='n3578' href='#n3578'>3578</a>
<a id='n3579' href='#n3579'>3579</a>
<a id='n3580' href='#n3580'>3580</a>
<a id='n3581' href='#n3581'>3581</a>
<a id='n3582' href='#n3582'>3582</a>
<a id='n3583' href='#n3583'>3583</a>
<a id='n3584' href='#n3584'>3584</a>
<a id='n3585' href='#n3585'>3585</a>
<a id='n3586' href='#n3586'>3586</a>
<a id='n3587' href='#n3587'>3587</a>
<a id='n3588' href='#n3588'>3588</a>
<a id='n3589' href='#n3589'>3589</a>
<a id='n3590' href='#n3590'>3590</a>
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<a id='n3608' href='#n3608'>3608</a>
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<a id='n3610' href='#n3610'>3610</a>
<a id='n3611' href='#n3611'>3611</a>
<a id='n3612' href='#n3612'>3612</a>
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<a id='n3620' href='#n3620'>3620</a>
<a id='n3621' href='#n3621'>3621</a>
<a id='n3622' href='#n3622'>3622</a>
<a id='n3623' href='#n3623'>3623</a>
<a id='n3624' href='#n3624'>3624</a>
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<a id='n3626' href='#n3626'>3626</a>
<a id='n3627' href='#n3627'>3627</a>
<a id='n3628' href='#n3628'>3628</a>
<a id='n3629' href='#n3629'>3629</a>
<a id='n3630' href='#n3630'>3630</a>
<a id='n3631' href='#n3631'>3631</a>
<a id='n3632' href='#n3632'>3632</a>
<a id='n3633' href='#n3633'>3633</a>
<a id='n3634' href='#n3634'>3634</a>
<a id='n3635' href='#n3635'>3635</a>
<a id='n3636' href='#n3636'>3636</a>
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<a id='n3639' href='#n3639'>3639</a>
<a id='n3640' href='#n3640'>3640</a>
<a id='n3641' href='#n3641'>3641</a>
<a id='n3642' href='#n3642'>3642</a>
<a id='n3643' href='#n3643'>3643</a>
<a id='n3644' href='#n3644'>3644</a>
<a id='n3645' href='#n3645'>3645</a>
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<a id='n3647' href='#n3647'>3647</a>
<a id='n3648' href='#n3648'>3648</a>
<a id='n3649' href='#n3649'>3649</a>
<a id='n3650' href='#n3650'>3650</a>
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<a id='n3660' href='#n3660'>3660</a>
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<a id='n3663' href='#n3663'>3663</a>
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<a id='n3665' href='#n3665'>3665</a>
<a id='n3666' href='#n3666'>3666</a>
<a id='n3667' href='#n3667'>3667</a>
<a id='n3668' href='#n3668'>3668</a>
<a id='n3669' href='#n3669'>3669</a>
<a id='n3670' href='#n3670'>3670</a>
<a id='n3671' href='#n3671'>3671</a>
<a id='n3672' href='#n3672'>3672</a>
<a id='n3673' href='#n3673'>3673</a>
<a id='n3674' href='#n3674'>3674</a>
<a id='n3675' href='#n3675'>3675</a>
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<a id='n3677' href='#n3677'>3677</a>
<a id='n3678' href='#n3678'>3678</a>
<a id='n3679' href='#n3679'>3679</a>
<a id='n3680' href='#n3680'>3680</a>
<a id='n3681' href='#n3681'>3681</a>
<a id='n3682' href='#n3682'>3682</a>
<a id='n3683' href='#n3683'>3683</a>
<a id='n3684' href='#n3684'>3684</a>
<a id='n3685' href='#n3685'>3685</a>
<a id='n3686' href='#n3686'>3686</a>
<a id='n3687' href='#n3687'>3687</a>
<a id='n3688' href='#n3688'>3688</a>
<a id='n3689' href='#n3689'>3689</a>
<a id='n3690' href='#n3690'>3690</a>
<a id='n3691' href='#n3691'>3691</a>
<a id='n3692' href='#n3692'>3692</a>
<a id='n3693' href='#n3693'>3693</a>
<a id='n3694' href='#n3694'>3694</a>
<a id='n3695' href='#n3695'>3695</a>
<a id='n3696' href='#n3696'>3696</a>
<a id='n3697' href='#n3697'>3697</a>
<a id='n3698' href='#n3698'>3698</a>
<a id='n3699' href='#n3699'>3699</a>
<a id='n3700' href='#n3700'>3700</a>
<a id='n3701' href='#n3701'>3701</a>
<a id='n3702' href='#n3702'>3702</a>
<a id='n3703' href='#n3703'>3703</a>
<a id='n3704' href='#n3704'>3704</a>
<a id='n3705' href='#n3705'>3705</a>
<a id='n3706' href='#n3706'>3706</a>
<a id='n3707' href='#n3707'>3707</a>
<a id='n3708' href='#n3708'>3708</a>
<a id='n3709' href='#n3709'>3709</a>
<a id='n3710' href='#n3710'>3710</a>
<a id='n3711' href='#n3711'>3711</a>
<a id='n3712' href='#n3712'>3712</a>
<a id='n3713' href='#n3713'>3713</a>
<a id='n3714' href='#n3714'>3714</a>
<a id='n3715' href='#n3715'>3715</a>
<a id='n3716' href='#n3716'>3716</a>
<a id='n3717' href='#n3717'>3717</a>
<a id='n3718' href='#n3718'>3718</a>
<a id='n3719' href='#n3719'>3719</a>
<a id='n3720' href='#n3720'>3720</a>
<a id='n3721' href='#n3721'>3721</a>
<a id='n3722' href='#n3722'>3722</a>
<a id='n3723' href='#n3723'>3723</a>
<a id='n3724' href='#n3724'>3724</a>
<a id='n3725' href='#n3725'>3725</a>
<a id='n3726' href='#n3726'>3726</a>
<a id='n3727' href='#n3727'>3727</a>
<a id='n3728' href='#n3728'>3728</a>
<a id='n3729' href='#n3729'>3729</a>
<a id='n3730' href='#n3730'>3730</a>
<a id='n3731' href='#n3731'>3731</a>
<a id='n3732' href='#n3732'>3732</a>
<a id='n3733' href='#n3733'>3733</a>
<a id='n3734' href='#n3734'>3734</a>
<a id='n3735' href='#n3735'>3735</a>
<a id='n3736' href='#n3736'>3736</a>
<a id='n3737' href='#n3737'>3737</a>
<a id='n3738' href='#n3738'>3738</a>
<a id='n3739' href='#n3739'>3739</a>
<a id='n3740' href='#n3740'>3740</a>
<a id='n3741' href='#n3741'>3741</a>
<a id='n3742' href='#n3742'>3742</a>
<a id='n3743' href='#n3743'>3743</a>
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<a id='n3747' href='#n3747'>3747</a>
<a id='n3748' href='#n3748'>3748</a>
<a id='n3749' href='#n3749'>3749</a>
<a id='n3750' href='#n3750'>3750</a>
<a id='n3751' href='#n3751'>3751</a>
<a id='n3752' href='#n3752'>3752</a>
<a id='n3753' href='#n3753'>3753</a>
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<a id='n3755' href='#n3755'>3755</a>
<a id='n3756' href='#n3756'>3756</a>
<a id='n3757' href='#n3757'>3757</a>
<a id='n3758' href='#n3758'>3758</a>
<a id='n3759' href='#n3759'>3759</a>
<a id='n3760' href='#n3760'>3760</a>
<a id='n3761' href='#n3761'>3761</a>
<a id='n3762' href='#n3762'>3762</a>
<a id='n3763' href='#n3763'>3763</a>
<a id='n3764' href='#n3764'>3764</a>
<a id='n3765' href='#n3765'>3765</a>
<a id='n3766' href='#n3766'>3766</a>
<a id='n3767' href='#n3767'>3767</a>
<a id='n3768' href='#n3768'>3768</a>
<a id='n3769' href='#n3769'>3769</a>
<a id='n3770' href='#n3770'>3770</a>
<a id='n3771' href='#n3771'>3771</a>
<a id='n3772' href='#n3772'>3772</a>
<a id='n3773' href='#n3773'>3773</a>
<a id='n3774' href='#n3774'>3774</a>
<a id='n3775' href='#n3775'>3775</a>
<a id='n3776' href='#n3776'>3776</a>
<a id='n3777' href='#n3777'>3777</a>
<a id='n3778' href='#n3778'>3778</a>
<a id='n3779' href='#n3779'>3779</a>
<a id='n3780' href='#n3780'>3780</a>
<a id='n3781' href='#n3781'>3781</a>
<a id='n3782' href='#n3782'>3782</a>
<a id='n3783' href='#n3783'>3783</a>
<a id='n3784' href='#n3784'>3784</a>
<a id='n3785' href='#n3785'>3785</a>
<a id='n3786' href='#n3786'>3786</a>
<a id='n3787' href='#n3787'>3787</a>
<a id='n3788' href='#n3788'>3788</a>
<a id='n3789' href='#n3789'>3789</a>
<a id='n3790' href='#n3790'>3790</a>
<a id='n3791' href='#n3791'>3791</a>
<a id='n3792' href='#n3792'>3792</a>
<a id='n3793' href='#n3793'>3793</a>
<a id='n3794' href='#n3794'>3794</a>
<a id='n3795' href='#n3795'>3795</a>
<a id='n3796' href='#n3796'>3796</a>
<a id='n3797' href='#n3797'>3797</a>
<a id='n3798' href='#n3798'>3798</a>
<a id='n3799' href='#n3799'>3799</a>
<a id='n3800' href='#n3800'>3800</a>
<a id='n3801' href='#n3801'>3801</a>
<a id='n3802' href='#n3802'>3802</a>
<a id='n3803' href='#n3803'>3803</a>
<a id='n3804' href='#n3804'>3804</a>
<a id='n3805' href='#n3805'>3805</a>
<a id='n3806' href='#n3806'>3806</a>
<a id='n3807' href='#n3807'>3807</a>
<a id='n3808' href='#n3808'>3808</a>
<a id='n3809' href='#n3809'>3809</a>
<a id='n3810' href='#n3810'>3810</a>
<a id='n3811' href='#n3811'>3811</a>
<a id='n3812' href='#n3812'>3812</a>
<a id='n3813' href='#n3813'>3813</a>
<a id='n3814' href='#n3814'>3814</a>
<a id='n3815' href='#n3815'>3815</a>
<a id='n3816' href='#n3816'>3816</a>
<a id='n3817' href='#n3817'>3817</a>
<a id='n3818' href='#n3818'>3818</a>
<a id='n3819' href='#n3819'>3819</a>
<a id='n3820' href='#n3820'>3820</a>
<a id='n3821' href='#n3821'>3821</a>
<a id='n3822' href='#n3822'>3822</a>
<a id='n3823' href='#n3823'>3823</a>
<a id='n3824' href='#n3824'>3824</a>
<a id='n3825' href='#n3825'>3825</a>
<a id='n3826' href='#n3826'>3826</a>
<a id='n3827' href='#n3827'>3827</a>
<a id='n3828' href='#n3828'>3828</a>
<a id='n3829' href='#n3829'>3829</a>
<a id='n3830' href='#n3830'>3830</a>
<a id='n3831' href='#n3831'>3831</a>
<a id='n3832' href='#n3832'>3832</a>
<a id='n3833' href='#n3833'>3833</a>
<a id='n3834' href='#n3834'>3834</a>
<a id='n3835' href='#n3835'>3835</a>
<a id='n3836' href='#n3836'>3836</a>
<a id='n3837' href='#n3837'>3837</a>
<a id='n3838' href='#n3838'>3838</a>
<a id='n3839' href='#n3839'>3839</a>
<a id='n3840' href='#n3840'>3840</a>
<a id='n3841' href='#n3841'>3841</a>
<a id='n3842' href='#n3842'>3842</a>
<a id='n3843' href='#n3843'>3843</a>
<a id='n3844' href='#n3844'>3844</a>
<a id='n3845' href='#n3845'>3845</a>
<a id='n3846' href='#n3846'>3846</a>
<a id='n3847' href='#n3847'>3847</a>
<a id='n3848' href='#n3848'>3848</a>
<a id='n3849' href='#n3849'>3849</a>
<a id='n3850' href='#n3850'>3850</a>
<a id='n3851' href='#n3851'>3851</a>
<a id='n3852' href='#n3852'>3852</a>
<a id='n3853' href='#n3853'>3853</a>
<a id='n3854' href='#n3854'>3854</a>
<a id='n3855' href='#n3855'>3855</a>
<a id='n3856' href='#n3856'>3856</a>
<a id='n3857' href='#n3857'>3857</a>
<a id='n3858' href='#n3858'>3858</a>
<a id='n3859' href='#n3859'>3859</a>
<a id='n3860' href='#n3860'>3860</a>
<a id='n3861' href='#n3861'>3861</a>
<a id='n3862' href='#n3862'>3862</a>
<a id='n3863' href='#n3863'>3863</a>
<a id='n3864' href='#n3864'>3864</a>
<a id='n3865' href='#n3865'>3865</a>
<a id='n3866' href='#n3866'>3866</a>
<a id='n3867' href='#n3867'>3867</a>
<a id='n3868' href='#n3868'>3868</a>
<a id='n3869' href='#n3869'>3869</a>
<a id='n3870' href='#n3870'>3870</a>
<a id='n3871' href='#n3871'>3871</a>
<a id='n3872' href='#n3872'>3872</a>
<a id='n3873' href='#n3873'>3873</a>
<a id='n3874' href='#n3874'>3874</a>
<a id='n3875' href='#n3875'>3875</a>
<a id='n3876' href='#n3876'>3876</a>
<a id='n3877' href='#n3877'>3877</a>
<a id='n3878' href='#n3878'>3878</a>
<a id='n3879' href='#n3879'>3879</a>
<a id='n3880' href='#n3880'>3880</a>
<a id='n3881' href='#n3881'>3881</a>
<a id='n3882' href='#n3882'>3882</a>
<a id='n3883' href='#n3883'>3883</a>
<a id='n3884' href='#n3884'>3884</a>
<a id='n3885' href='#n3885'>3885</a>
<a id='n3886' href='#n3886'>3886</a>
<a id='n3887' href='#n3887'>3887</a>
<a id='n3888' href='#n3888'>3888</a>
<a id='n3889' href='#n3889'>3889</a>
<a id='n3890' href='#n3890'>3890</a>
<a id='n3891' href='#n3891'>3891</a>
<a id='n3892' href='#n3892'>3892</a>
<a id='n3893' href='#n3893'>3893</a>
<a id='n3894' href='#n3894'>3894</a>
<a id='n3895' href='#n3895'>3895</a>
<a id='n3896' href='#n3896'>3896</a>
<a id='n3897' href='#n3897'>3897</a>
<a id='n3898' href='#n3898'>3898</a>
<a id='n3899' href='#n3899'>3899</a>
<a id='n3900' href='#n3900'>3900</a>
<a id='n3901' href='#n3901'>3901</a>
<a id='n3902' href='#n3902'>3902</a>
<a id='n3903' href='#n3903'>3903</a>
<a id='n3904' href='#n3904'>3904</a>
<a id='n3905' href='#n3905'>3905</a>
<a id='n3906' href='#n3906'>3906</a>
<a id='n3907' href='#n3907'>3907</a>
<a id='n3908' href='#n3908'>3908</a>
<a id='n3909' href='#n3909'>3909</a>
<a id='n3910' href='#n3910'>3910</a>
<a id='n3911' href='#n3911'>3911</a>
<a id='n3912' href='#n3912'>3912</a>
<a id='n3913' href='#n3913'>3913</a>
<a id='n3914' href='#n3914'>3914</a>
<a id='n3915' href='#n3915'>3915</a>
<a id='n3916' href='#n3916'>3916</a>
<a id='n3917' href='#n3917'>3917</a>
<a id='n3918' href='#n3918'>3918</a>
<a id='n3919' href='#n3919'>3919</a>
<a id='n3920' href='#n3920'>3920</a>
<a id='n3921' href='#n3921'>3921</a>
<a id='n3922' href='#n3922'>3922</a>
<a id='n3923' href='#n3923'>3923</a>
<a id='n3924' href='#n3924'>3924</a>
<a id='n3925' href='#n3925'>3925</a>
<a id='n3926' href='#n3926'>3926</a>
<a id='n3927' href='#n3927'>3927</a>
<a id='n3928' href='#n3928'>3928</a>
<a id='n3929' href='#n3929'>3929</a>
<a id='n3930' href='#n3930'>3930</a>
<a id='n3931' href='#n3931'>3931</a>
<a id='n3932' href='#n3932'>3932</a>
<a id='n3933' href='#n3933'>3933</a>
<a id='n3934' href='#n3934'>3934</a>
<a id='n3935' href='#n3935'>3935</a>
<a id='n3936' href='#n3936'>3936</a>
<a id='n3937' href='#n3937'>3937</a>
<a id='n3938' href='#n3938'>3938</a>
<a id='n3939' href='#n3939'>3939</a>
<a id='n3940' href='#n3940'>3940</a>
<a id='n3941' href='#n3941'>3941</a>
<a id='n3942' href='#n3942'>3942</a>
<a id='n3943' href='#n3943'>3943</a>
<a id='n3944' href='#n3944'>3944</a>
<a id='n3945' href='#n3945'>3945</a>
<a id='n3946' href='#n3946'>3946</a>
<a id='n3947' href='#n3947'>3947</a>
<a id='n3948' href='#n3948'>3948</a>
<a id='n3949' href='#n3949'>3949</a>
<a id='n3950' href='#n3950'>3950</a>
<a id='n3951' href='#n3951'>3951</a>
<a id='n3952' href='#n3952'>3952</a>
<a id='n3953' href='#n3953'>3953</a>
<a id='n3954' href='#n3954'>3954</a>
<a id='n3955' href='#n3955'>3955</a>
<a id='n3956' href='#n3956'>3956</a>
<a id='n3957' href='#n3957'>3957</a>
<a id='n3958' href='#n3958'>3958</a>
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<td class='lines'><pre><code><span class="hl com">/*</span>
<span class="hl com"> * This file compiles an abstract syntax tree (AST) into Python bytecode.</span>
<span class="hl com"> *</span>
<span class="hl com"> * The primary entry point is PyAST_Compile(), which returns a</span>
<span class="hl com"> * PyCodeObject.  The compiler makes several passes to build the code</span>
<span class="hl com"> * object:</span>
<span class="hl com"> *   1. Checks for future statements.  See future.c</span>
<span class="hl com"> *   2. Builds a symbol table.  See symtable.c.</span>
<span class="hl com"> *   3. Generate code for basic blocks.  See compiler_mod() in this file.</span>
<span class="hl com"> *   4. Assemble the basic blocks into final code.  See assemble() in</span>
<span class="hl com"> *      this file.</span>
<span class="hl com"> *   5. Optimize the byte code (peephole optimizations).  See peephole.c</span>
<span class="hl com"> *</span>
<span class="hl com"> * Note that compiler_mod() suggests module, but the module ast type</span>
<span class="hl com"> * (mod_ty) has cases for expressions and interactive statements.</span>
<span class="hl com"> *</span>
<span class="hl com"> * CAUTION: The VISIT_* macros abort the current function when they</span>
<span class="hl com"> * encounter a problem. So don't invoke them when there is memory</span>
<span class="hl com"> * which needs to be released. Code blocks are OK, as the compiler</span>
<span class="hl com"> * structure takes care of releasing those.  Use the arena to manage</span>
<span class="hl com"> * objects.</span>
<span class="hl com"> */</span>

<span class="hl ppc">#include</span> <span class="hl pps">&quot;Python.h&quot;</span><span class="hl ppc"></span>

<span class="hl ppc">#include</span> <span class="hl pps">&quot;Python-ast.h&quot;</span><span class="hl ppc"></span>
<span class="hl ppc">#include</span> <span class="hl pps">&quot;node.h&quot;</span><span class="hl ppc"></span>
<span class="hl ppc">#include</span> <span class="hl pps">&quot;ast.h&quot;</span><span class="hl ppc"></span>
<span class="hl ppc">#include</span> <span class="hl pps">&quot;code.h&quot;</span><span class="hl ppc"></span>
<span class="hl ppc">#include</span> <span class="hl pps">&quot;symtable.h&quot;</span><span class="hl ppc"></span>
<span class="hl ppc">#include</span> <span class="hl pps">&quot;opcode.h&quot;</span><span class="hl ppc"></span>

<span class="hl kwb">int</span> Py_OptimizeFlag <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>

<span class="hl ppc">#define DEFAULT_BLOCK_SIZE 16</span>
<span class="hl ppc">#define DEFAULT_BLOCKS 8</span>
<span class="hl ppc">#define DEFAULT_CODE_SIZE 128</span>
<span class="hl ppc">#define DEFAULT_LNOTAB_SIZE 16</span>

<span class="hl ppc">#define COMP_GENEXP   0</span>
<span class="hl ppc">#define COMP_LISTCOMP 1</span>
<span class="hl ppc">#define COMP_SETCOMP  2</span>
<span class="hl ppc">#define COMP_DICTCOMP 3</span>

<span class="hl kwb">struct</span> instr <span class="hl opt">{</span>
    <span class="hl kwb">unsigned</span> i_jabs <span class="hl opt">:</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwb">unsigned</span> i_jrel <span class="hl opt">:</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwb">unsigned</span> i_hasarg <span class="hl opt">:</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwb">unsigned char</span> i_opcode<span class="hl opt">;</span>
    <span class="hl kwb">int</span> i_oparg<span class="hl opt">;</span>
    <span class="hl kwb">struct</span> basicblock_ <span class="hl opt">*</span>i_target<span class="hl opt">;</span> <span class="hl com">/* target block (if jump instruction) */</span>
    <span class="hl kwb">int</span> i_lineno<span class="hl opt">;</span>
<span class="hl opt">};</span>

<span class="hl kwc">typedef</span> <span class="hl kwb">struct</span> basicblock_ <span class="hl opt">{</span>
    <span class="hl com">/* Each basicblock in a compilation unit is linked via b_list in the</span>
<span class="hl com">       reverse order that the block are allocated.  b_list points to the next</span>
<span class="hl com">       block, not to be confused with b_next, which is next by control flow. */</span>
    <span class="hl kwb">struct</span> basicblock_ <span class="hl opt">*</span>b_list<span class="hl opt">;</span>
    <span class="hl com">/* number of instructions used */</span>
    <span class="hl kwb">int</span> b_iused<span class="hl opt">;</span>
    <span class="hl com">/* length of instruction array (b_instr) */</span>
    <span class="hl kwb">int</span> b_ialloc<span class="hl opt">;</span>
    <span class="hl com">/* pointer to an array of instructions, initially NULL */</span>
    <span class="hl kwb">struct</span> instr <span class="hl opt">*</span>b_instr<span class="hl opt">;</span>
    <span class="hl com">/* If b_next is non-NULL, it is a pointer to the next</span>
<span class="hl com">       block reached by normal control flow. */</span>
    <span class="hl kwb">struct</span> basicblock_ <span class="hl opt">*</span>b_next<span class="hl opt">;</span>
    <span class="hl com">/* b_seen is used to perform a DFS of basicblocks. */</span>
    <span class="hl kwb">unsigned</span> b_seen <span class="hl opt">:</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl com">/* b_return is true if a RETURN_VALUE opcode is inserted. */</span>
    <span class="hl kwb">unsigned</span> b_return <span class="hl opt">:</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl com">/* depth of stack upon entry of block, computed by stackdepth() */</span>
    <span class="hl kwb">int</span> b_startdepth<span class="hl opt">;</span>
    <span class="hl com">/* instruction offset for block, computed by assemble_jump_offsets() */</span>
    <span class="hl kwb">int</span> b_offset<span class="hl opt">;</span>
<span class="hl opt">}</span> basicblock<span class="hl opt">;</span>

<span class="hl com">/* fblockinfo tracks the current frame block.</span>
<span class="hl com"></span>
<span class="hl com">A frame block is used to handle loops, try/except, and try/finally.</span>
<span class="hl com">It's called a frame block to distinguish it from a basic block in the</span>
<span class="hl com">compiler IR.</span>
<span class="hl com">*/</span>

<span class="hl kwb">enum</span> fblocktype <span class="hl opt">{</span> LOOP<span class="hl opt">,</span> EXCEPT<span class="hl opt">,</span> FINALLY_TRY<span class="hl opt">,</span> FINALLY_END <span class="hl opt">};</span>

<span class="hl kwb">struct</span> fblockinfo <span class="hl opt">{</span>
    <span class="hl kwb">enum</span> fblocktype fb_type<span class="hl opt">;</span>
    basicblock <span class="hl opt">*</span>fb_block<span class="hl opt">;</span>
<span class="hl opt">};</span>

<span class="hl com">/* The following items change on entry and exit of code blocks.</span>
<span class="hl com">   They must be saved and restored when returning to a block.</span>
<span class="hl com">*/</span>
<span class="hl kwb">struct</span> compiler_unit <span class="hl opt">{</span>
    PySTEntryObject <span class="hl opt">*</span>u_ste<span class="hl opt">;</span>

    PyObject <span class="hl opt">*</span>u_name<span class="hl opt">;</span>
    <span class="hl com">/* The following fields are dicts that map objects to</span>
<span class="hl com">       the index of them in co_XXX.      The index is used as</span>
<span class="hl com">       the argument for opcodes that refer to those collections.</span>
<span class="hl com">    */</span>
    PyObject <span class="hl opt">*</span>u_consts<span class="hl opt">;</span>    <span class="hl com">/* all constants */</span>
    PyObject <span class="hl opt">*</span>u_names<span class="hl opt">;</span>     <span class="hl com">/* all names */</span>
    PyObject <span class="hl opt">*</span>u_varnames<span class="hl opt">;</span>  <span class="hl com">/* local variables */</span>
    PyObject <span class="hl opt">*</span>u_cellvars<span class="hl opt">;</span>  <span class="hl com">/* cell variables */</span>
    PyObject <span class="hl opt">*</span>u_freevars<span class="hl opt">;</span>  <span class="hl com">/* free variables */</span>

    PyObject <span class="hl opt">*</span>u_private<span class="hl opt">;</span>        <span class="hl com">/* for private name mangling */</span>

    <span class="hl kwb">int</span> u_argcount<span class="hl opt">;</span>        <span class="hl com">/* number of arguments for block */</span>
    <span class="hl kwb">int</span> u_kwonlyargcount<span class="hl opt">;</span> <span class="hl com">/* number of keyword only arguments for block */</span>
    <span class="hl com">/* Pointer to the most recently allocated block.  By following b_list</span>
<span class="hl com">       members, you can reach all early allocated blocks. */</span>
    basicblock <span class="hl opt">*</span>u_blocks<span class="hl opt">;</span>
    basicblock <span class="hl opt">*</span>u_curblock<span class="hl opt">;</span> <span class="hl com">/* pointer to current block */</span>

    <span class="hl kwb">int</span> u_nfblocks<span class="hl opt">;</span>
    <span class="hl kwb">struct</span> fblockinfo u_fblock<span class="hl opt">[</span>CO_MAXBLOCKS<span class="hl opt">];</span>

    <span class="hl kwb">int</span> u_firstlineno<span class="hl opt">;</span> <span class="hl com">/* the first lineno of the block */</span>
    <span class="hl kwb">int</span> u_lineno<span class="hl opt">;</span>          <span class="hl com">/* the lineno for the current stmt */</span>
    <span class="hl kwb">int</span> u_col_offset<span class="hl opt">;</span>      <span class="hl com">/* the offset of the current stmt */</span>
    <span class="hl kwb">int</span> u_lineno_set<span class="hl opt">;</span>  <span class="hl com">/* boolean to indicate whether instr</span>
<span class="hl com">                          has been generated with current lineno */</span>
<span class="hl opt">};</span>

<span class="hl com">/* This struct captures the global state of a compilation.</span>
<span class="hl com"></span>
<span class="hl com">The u pointer points to the current compilation unit, while units</span>
<span class="hl com">for enclosing blocks are stored in c_stack.     The u and c_stack are</span>
<span class="hl com">managed by compiler_enter_scope() and compiler_exit_scope().</span>
<span class="hl com">*/</span>

<span class="hl kwb">struct</span> compiler <span class="hl opt">{</span>
    <span class="hl kwb">const char</span> <span class="hl opt">*</span>c_filename<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>c_filename_obj<span class="hl opt">;</span>
    <span class="hl kwb">struct</span> symtable <span class="hl opt">*</span>c_st<span class="hl opt">;</span>
    PyFutureFeatures <span class="hl opt">*</span>c_future<span class="hl opt">;</span> <span class="hl com">/* pointer to module's __future__ */</span>
    PyCompilerFlags <span class="hl opt">*</span>c_flags<span class="hl opt">;</span>

    <span class="hl kwb">int</span> c_optimize<span class="hl opt">;</span>              <span class="hl com">/* optimization level */</span>
    <span class="hl kwb">int</span> c_interactive<span class="hl opt">;</span>           <span class="hl com">/* true if in interactive mode */</span>
    <span class="hl kwb">int</span> c_nestlevel<span class="hl opt">;</span>

    <span class="hl kwb">struct</span> compiler_unit <span class="hl opt">*</span>u<span class="hl opt">;</span> <span class="hl com">/* compiler state for current block */</span>
    PyObject <span class="hl opt">*</span>c_stack<span class="hl opt">;</span>           <span class="hl com">/* Python list holding compiler_unit ptrs */</span>
    PyArena <span class="hl opt">*</span>c_arena<span class="hl opt">;</span>            <span class="hl com">/* pointer to memory allocation arena */</span>
<span class="hl opt">};</span>

<span class="hl kwb">static int</span> <span class="hl kwd">compiler_enter_scope</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> identifier<span class="hl opt">,</span> <span class="hl kwb">void</span> <span class="hl opt">*,</span> <span class="hl kwb">int</span><span class="hl opt">);</span>
<span class="hl kwb">static void</span> <span class="hl kwd">compiler_free</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*);</span>
<span class="hl kwb">static</span> basicblock <span class="hl opt">*</span><span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_next_instr</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> basicblock <span class="hl opt">*);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_addop</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> <span class="hl kwb">int</span><span class="hl opt">);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_addop_o</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> <span class="hl kwb">int</span><span class="hl opt">,</span> PyObject <span class="hl opt">*,</span> PyObject <span class="hl opt">*);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_addop_i</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> <span class="hl kwb">int</span><span class="hl opt">,</span> <span class="hl kwb">int</span><span class="hl opt">);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_addop_j</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> <span class="hl kwb">int</span><span class="hl opt">,</span> basicblock <span class="hl opt">*,</span> <span class="hl kwb">int</span><span class="hl opt">);</span>
<span class="hl kwb">static</span> basicblock <span class="hl opt">*</span><span class="hl kwd">compiler_use_new_block</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> <span class="hl kwb">const char</span> <span class="hl opt">*);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> identifier<span class="hl opt">,</span> expr_context_ty<span class="hl opt">);</span>

<span class="hl kwb">static</span> PyCodeObject <span class="hl opt">*</span><span class="hl kwd">compiler_mod</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> mod_ty<span class="hl opt">);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_visit_stmt</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> stmt_ty<span class="hl opt">);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_visit_keyword</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> keyword_ty<span class="hl opt">);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_visit_expr</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> expr_ty<span class="hl opt">);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_augassign</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> stmt_ty<span class="hl opt">);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_visit_slice</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> slice_ty<span class="hl opt">,</span>
                                expr_context_ty<span class="hl opt">);</span>

<span class="hl kwb">static int</span> <span class="hl kwd">compiler_push_fblock</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> <span class="hl kwb">enum</span> fblocktype<span class="hl opt">,</span>
                                basicblock <span class="hl opt">*);</span>
<span class="hl kwb">static void</span> <span class="hl kwd">compiler_pop_fblock</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> <span class="hl kwb">enum</span> fblocktype<span class="hl opt">,</span>
                                basicblock <span class="hl opt">*);</span>
<span class="hl com">/* Returns true if there is a loop on the fblock stack. */</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_in_loop</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*);</span>

<span class="hl kwb">static int</span> <span class="hl kwd">inplace_binop</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> operator_ty<span class="hl opt">);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">expr_constant</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> expr_ty<span class="hl opt">);</span>

<span class="hl kwb">static int</span> <span class="hl kwd">compiler_with</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> stmt_ty<span class="hl opt">,</span> <span class="hl kwb">int</span><span class="hl opt">);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_call_helper</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">int</span> n<span class="hl opt">,</span>
                                asdl_seq <span class="hl opt">*</span>args<span class="hl opt">,</span>
                                asdl_seq <span class="hl opt">*</span>keywords<span class="hl opt">,</span>
                                expr_ty starargs<span class="hl opt">,</span>
                                expr_ty kwargs<span class="hl opt">);</span>
<span class="hl kwb">static int</span> <span class="hl kwd">compiler_try_except</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> stmt_ty<span class="hl opt">);</span>

<span class="hl kwb">static</span> PyCodeObject <span class="hl opt">*</span><span class="hl kwd">assemble</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*,</span> <span class="hl kwb">int</span> addNone<span class="hl opt">);</span>
<span class="hl kwb">static</span> PyObject <span class="hl opt">*</span>__doc__<span class="hl opt">;</span>

<span class="hl ppc">#define COMPILER_CAPSULE_NAME_COMPILER_UNIT</span> <span class="hl pps">&quot;compile.c compiler unit&quot;</span><span class="hl ppc"></span>

PyObject <span class="hl opt">*</span>
<span class="hl kwd">_Py_Mangle</span><span class="hl opt">(</span>PyObject <span class="hl opt">*</span>privateobj<span class="hl opt">,</span> PyObject <span class="hl opt">*</span>ident<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl com">/* Name mangling: __private becomes _classname__private.</span>
<span class="hl com">       This is independent from how the name is used. */</span>
    <span class="hl kwb">const</span> Py_UNICODE <span class="hl opt">*</span>p<span class="hl opt">, *</span>name <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_AS_UNICODE</span><span class="hl opt">(</span>ident<span class="hl opt">);</span>
    Py_UNICODE <span class="hl opt">*</span>buffer<span class="hl opt">;</span>
    <span class="hl kwb">size_t</span> nlen<span class="hl opt">,</span> plen<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>privateobj <span class="hl opt">==</span> NULL <span class="hl opt">|| !</span><span class="hl kwd">PyUnicode_Check</span><span class="hl opt">(</span>privateobj<span class="hl opt">) ||</span>
        name <span class="hl opt">==</span> NULL <span class="hl opt">||</span> name<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">] !=</span> <span class="hl str">'_'</span> <span class="hl opt">||</span> name<span class="hl opt">[</span><span class="hl num">1</span><span class="hl opt">] !=</span> <span class="hl str">'_'</span><span class="hl opt">) {</span>
        <span class="hl kwd">Py_INCREF</span><span class="hl opt">(</span>ident<span class="hl opt">);</span>
        <span class="hl kwa">return</span> ident<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    p <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_AS_UNICODE</span><span class="hl opt">(</span>privateobj<span class="hl opt">);</span>
    nlen <span class="hl opt">=</span> <span class="hl kwd">Py_UNICODE_strlen</span><span class="hl opt">(</span>name<span class="hl opt">);</span>
    <span class="hl com">/* Don't mangle __id__ or names with dots.</span>
<span class="hl com"></span>
<span class="hl com">       The only time a name with a dot can occur is when</span>
<span class="hl com">       we are compiling an import statement that has a</span>
<span class="hl com">       package name.</span>
<span class="hl com"></span>
<span class="hl com">       TODO(jhylton): Decide whether we want to support</span>
<span class="hl com">       mangling of the module name, e.g. __M.X.</span>
<span class="hl com">    */</span>
    <span class="hl kwa">if</span> <span class="hl opt">((</span>name<span class="hl opt">[</span>nlen<span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">] ==</span> <span class="hl str">'_'</span> <span class="hl opt">&amp;&amp;</span> name<span class="hl opt">[</span>nlen<span class="hl opt">-</span><span class="hl num">2</span><span class="hl opt">] ==</span> <span class="hl str">'_'</span><span class="hl opt">)</span>
        <span class="hl opt">||</span> <span class="hl kwd">Py_UNICODE_strchr</span><span class="hl opt">(</span>name<span class="hl opt">,</span> <span class="hl str">'.'</span><span class="hl opt">)) {</span>
        <span class="hl kwd">Py_INCREF</span><span class="hl opt">(</span>ident<span class="hl opt">);</span>
        <span class="hl kwa">return</span> ident<span class="hl opt">;</span> <span class="hl com">/* Don't mangle __whatever__ */</span>
    <span class="hl opt">}</span>
    <span class="hl com">/* Strip leading underscores from class name */</span>
    <span class="hl kwa">while</span> <span class="hl opt">(*</span>p <span class="hl opt">==</span> <span class="hl str">'_'</span><span class="hl opt">)</span>
        p<span class="hl opt">++;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(*</span>p <span class="hl opt">==</span> <span class="hl num">0</span><span class="hl opt">) {</span>
        <span class="hl kwd">Py_INCREF</span><span class="hl opt">(</span>ident<span class="hl opt">);</span>
        <span class="hl kwa">return</span> ident<span class="hl opt">;</span> <span class="hl com">/* Don't mangle if class is just underscores */</span>
    <span class="hl opt">}</span>
    plen <span class="hl opt">=</span> <span class="hl kwd">Py_UNICODE_strlen</span><span class="hl opt">(</span>p<span class="hl opt">);</span>

    <span class="hl kwa">assert</span><span class="hl opt">(</span><span class="hl num">1</span> <span class="hl opt">&lt;=</span> PY_SSIZE_T_MAX <span class="hl opt">-</span> nlen<span class="hl opt">);</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span><span class="hl num">1</span> <span class="hl opt">+</span> nlen <span class="hl opt">&lt;=</span> PY_SSIZE_T_MAX <span class="hl opt">-</span> plen<span class="hl opt">);</span>

    ident <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_FromStringAndSize</span><span class="hl opt">(</span>NULL<span class="hl opt">,</span> <span class="hl num">1</span> <span class="hl opt">+</span> nlen <span class="hl opt">+</span> plen<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>ident<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl com">/* ident = &quot;_&quot; + p[:plen] + name # i.e. 1+plen+nlen bytes */</span>
    buffer <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_AS_UNICODE</span><span class="hl opt">(</span>ident<span class="hl opt">);</span>
    buffer<span class="hl opt">[</span><span class="hl num">0</span><span class="hl opt">] =</span> <span class="hl str">'_'</span><span class="hl opt">;</span>
    <span class="hl kwd">Py_UNICODE_strncpy</span><span class="hl opt">(</span>buffer<span class="hl opt">+</span><span class="hl num">1</span><span class="hl opt">,</span> p<span class="hl opt">,</span> plen<span class="hl opt">);</span>
    <span class="hl kwd">Py_UNICODE_strcpy</span><span class="hl opt">(</span>buffer<span class="hl opt">+</span><span class="hl num">1</span><span class="hl opt">+</span>plen<span class="hl opt">,</span> name<span class="hl opt">);</span>
    <span class="hl kwa">return</span> ident<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_init</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwd">memset</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler<span class="hl opt">));</span>

    c<span class="hl opt">-&gt;</span>c_stack <span class="hl opt">=</span> <span class="hl kwd">PyList_New</span><span class="hl opt">(</span><span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>c<span class="hl opt">-&gt;</span>c_stack<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

PyCodeObject <span class="hl opt">*</span>
<span class="hl kwd">PyAST_CompileEx</span><span class="hl opt">(</span>mod_ty mod<span class="hl opt">,</span> <span class="hl kwb">const char</span> <span class="hl opt">*</span>filename<span class="hl opt">,</span> PyCompilerFlags <span class="hl opt">*</span>flags<span class="hl opt">,</span>
                <span class="hl kwb">int</span> optimize<span class="hl opt">,</span> PyArena <span class="hl opt">*</span>arena<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">struct</span> compiler c<span class="hl opt">;</span>
    PyCodeObject <span class="hl opt">*</span>co <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    PyCompilerFlags local_flags<span class="hl opt">;</span>
    <span class="hl kwb">int</span> merged<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span>__doc__<span class="hl opt">) {</span>
        __doc__ <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_InternFromString</span><span class="hl opt">(</span><span class="hl str">&quot;__doc__&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>__doc__<span class="hl opt">)</span>
            <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_init</span><span class="hl opt">(&amp;</span>c<span class="hl opt">))</span>
        <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
    c<span class="hl opt">.</span>c_filename <span class="hl opt">=</span> filename<span class="hl opt">;</span>
    c<span class="hl opt">.</span>c_filename_obj <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_DecodeFSDefault</span><span class="hl opt">(</span>filename<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>c<span class="hl opt">.</span>c_filename_obj<span class="hl opt">)</span>
        <span class="hl kwa">goto</span> finally<span class="hl opt">;</span>
    c<span class="hl opt">.</span>c_arena <span class="hl opt">=</span> arena<span class="hl opt">;</span>
    c<span class="hl opt">.</span>c_future <span class="hl opt">=</span> <span class="hl kwd">PyFuture_FromAST</span><span class="hl opt">(</span>mod<span class="hl opt">,</span> filename<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">.</span>c_future <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">goto</span> finally<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>flags<span class="hl opt">) {</span>
        local_flags<span class="hl opt">.</span>cf_flags <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
        flags <span class="hl opt">= &amp;</span>local_flags<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    merged <span class="hl opt">=</span> c<span class="hl opt">.</span>c_future<span class="hl opt">-&gt;</span>ff_features <span class="hl opt">|</span> flags<span class="hl opt">-&gt;</span>cf_flags<span class="hl opt">;</span>
    c<span class="hl opt">.</span>c_future<span class="hl opt">-&gt;</span>ff_features <span class="hl opt">=</span> merged<span class="hl opt">;</span>
    flags<span class="hl opt">-&gt;</span>cf_flags <span class="hl opt">=</span> merged<span class="hl opt">;</span>
    c<span class="hl opt">.</span>c_flags <span class="hl opt">=</span> flags<span class="hl opt">;</span>
    c<span class="hl opt">.</span>c_optimize <span class="hl opt">= (</span>optimize <span class="hl opt">== -</span><span class="hl num">1</span><span class="hl opt">)</span> ? Py_OptimizeFlag <span class="hl opt">:</span> optimize<span class="hl opt">;</span>
    c<span class="hl opt">.</span>c_nestlevel <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>

    c<span class="hl opt">.</span>c_st <span class="hl opt">=</span> <span class="hl kwd">PySymtable_Build</span><span class="hl opt">(</span>mod<span class="hl opt">,</span> filename<span class="hl opt">,</span> c<span class="hl opt">.</span>c_future<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">.</span>c_st <span class="hl opt">==</span> NULL<span class="hl opt">) {</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">PyErr_Occurred</span><span class="hl opt">())</span>
            <span class="hl kwd">PyErr_SetString</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span> <span class="hl str">&quot;no symtable&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">goto</span> finally<span class="hl opt">;</span>
    <span class="hl opt">}</span>

    co <span class="hl opt">=</span> <span class="hl kwd">compiler_mod</span><span class="hl opt">(&amp;</span>c<span class="hl opt">,</span> mod<span class="hl opt">);</span>

 finally<span class="hl opt">:</span>
    <span class="hl kwd">compiler_free</span><span class="hl opt">(&amp;</span>c<span class="hl opt">);</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>co <span class="hl opt">||</span> <span class="hl kwd">PyErr_Occurred</span><span class="hl opt">());</span>
    <span class="hl kwa">return</span> co<span class="hl opt">;</span>
<span class="hl opt">}</span>

PyCodeObject <span class="hl opt">*</span>
<span class="hl kwd">PyNode_Compile</span><span class="hl opt">(</span><span class="hl kwb">struct</span> _node <span class="hl opt">*</span>n<span class="hl opt">,</span> <span class="hl kwb">const char</span> <span class="hl opt">*</span>filename<span class="hl opt">)</span>
<span class="hl opt">{</span>
    PyCodeObject <span class="hl opt">*</span>co <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    mod_ty mod<span class="hl opt">;</span>
    PyArena <span class="hl opt">*</span>arena <span class="hl opt">=</span> <span class="hl kwd">PyArena_New</span><span class="hl opt">();</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>arena<span class="hl opt">)</span>
        <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
    mod <span class="hl opt">=</span> <span class="hl kwd">PyAST_FromNode</span><span class="hl opt">(</span>n<span class="hl opt">,</span> NULL<span class="hl opt">,</span> filename<span class="hl opt">,</span> arena<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>mod<span class="hl opt">)</span>
        co <span class="hl opt">=</span> <span class="hl kwd">PyAST_Compile</span><span class="hl opt">(</span>mod<span class="hl opt">,</span> filename<span class="hl opt">,</span> NULL<span class="hl opt">,</span> arena<span class="hl opt">);</span>
    <span class="hl kwd">PyArena_Free</span><span class="hl opt">(</span>arena<span class="hl opt">);</span>
    <span class="hl kwa">return</span> co<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static void</span>
<span class="hl kwd">compiler_free</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_st<span class="hl opt">)</span>
        <span class="hl kwd">PySymtable_Free</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_st<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_future<span class="hl opt">)</span>
        <span class="hl kwd">PyObject_Free</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_future<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_filename_obj<span class="hl opt">)</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_filename_obj<span class="hl opt">);</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_stack<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static</span> PyObject <span class="hl opt">*</span>
<span class="hl kwd">list2dict</span><span class="hl opt">(</span>PyObject <span class="hl opt">*</span>list<span class="hl opt">)</span>
<span class="hl opt">{</span>
    Py_ssize_t i<span class="hl opt">,</span> n<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>v<span class="hl opt">, *</span>k<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>dict <span class="hl opt">=</span> <span class="hl kwd">PyDict_New</span><span class="hl opt">();</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>dict<span class="hl opt">)</span> <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>

    n <span class="hl opt">=</span> <span class="hl kwd">PyList_Size</span><span class="hl opt">(</span>list<span class="hl opt">);</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
        v <span class="hl opt">=</span> <span class="hl kwd">PyLong_FromLong</span><span class="hl opt">(</span>i<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>v<span class="hl opt">) {</span>
            <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>dict<span class="hl opt">);</span>
            <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
        <span class="hl opt">}</span>
        k <span class="hl opt">=</span> <span class="hl kwd">PyList_GET_ITEM</span><span class="hl opt">(</span>list<span class="hl opt">,</span> i<span class="hl opt">);</span>
        k <span class="hl opt">=</span> <span class="hl kwd">PyTuple_Pack</span><span class="hl opt">(</span><span class="hl num">2</span><span class="hl opt">,</span> k<span class="hl opt">,</span> k<span class="hl opt">-&gt;</span>ob_type<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>k <span class="hl opt">==</span> NULL <span class="hl opt">||</span> <span class="hl kwd">PyDict_SetItem</span><span class="hl opt">(</span>dict<span class="hl opt">,</span> k<span class="hl opt">,</span> v<span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">) {</span>
            <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>k<span class="hl opt">);</span>
            <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>v<span class="hl opt">);</span>
            <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>dict<span class="hl opt">);</span>
            <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>k<span class="hl opt">);</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>v<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> dict<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl com">/* Return new dict containing names from src that match scope(s).</span>
<span class="hl com"></span>
<span class="hl com">src is a symbol table dictionary.  If the scope of a name matches</span>
<span class="hl com">either scope_type or flag is set, insert it into the new dict.  The</span>
<span class="hl com">values are integers, starting at offset and increasing by one for</span>
<span class="hl com">each key.</span>
<span class="hl com">*/</span>

<span class="hl kwb">static</span> PyObject <span class="hl opt">*</span>
<span class="hl kwd">dictbytype</span><span class="hl opt">(</span>PyObject <span class="hl opt">*</span>src<span class="hl opt">,</span> <span class="hl kwb">int</span> scope_type<span class="hl opt">,</span> <span class="hl kwb">int</span> flag<span class="hl opt">,</span> <span class="hl kwb">int</span> offset<span class="hl opt">)</span>
<span class="hl opt">{</span>
    Py_ssize_t pos <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">,</span> i <span class="hl opt">=</span> offset<span class="hl opt">,</span> scope<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>k<span class="hl opt">, *</span>v<span class="hl opt">, *</span>dest <span class="hl opt">=</span> <span class="hl kwd">PyDict_New</span><span class="hl opt">();</span>

    <span class="hl kwa">assert</span><span class="hl opt">(</span>offset <span class="hl opt">&gt;=</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>dest <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>

    <span class="hl kwa">while</span> <span class="hl opt">(</span><span class="hl kwd">PyDict_Next</span><span class="hl opt">(</span>src<span class="hl opt">, &amp;</span>pos<span class="hl opt">, &amp;</span>k<span class="hl opt">, &amp;</span>v<span class="hl opt">)) {</span>
        <span class="hl com">/* XXX this should probably be a macro in symtable.h */</span>
        <span class="hl kwb">long</span> vi<span class="hl opt">;</span>
        <span class="hl kwa">assert</span><span class="hl opt">(</span><span class="hl kwd">PyLong_Check</span><span class="hl opt">(</span>v<span class="hl opt">));</span>
        vi <span class="hl opt">=</span> <span class="hl kwd">PyLong_AS_LONG</span><span class="hl opt">(</span>v<span class="hl opt">);</span>
        scope <span class="hl opt">= (</span>vi <span class="hl opt">&gt;&gt;</span> SCOPE_OFFSET<span class="hl opt">) &amp;</span> SCOPE_MASK<span class="hl opt">;</span>

        <span class="hl kwa">if</span> <span class="hl opt">(</span>scope <span class="hl opt">==</span> scope_type <span class="hl opt">||</span> vi <span class="hl opt">&amp;</span> flag<span class="hl opt">) {</span>
            PyObject <span class="hl opt">*</span>tuple<span class="hl opt">, *</span>item <span class="hl opt">=</span> <span class="hl kwd">PyLong_FromLong</span><span class="hl opt">(</span>i<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span>item <span class="hl opt">==</span> NULL<span class="hl opt">) {</span>
                <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>dest<span class="hl opt">);</span>
                <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
            <span class="hl opt">}</span>
            i<span class="hl opt">++;</span>
            tuple <span class="hl opt">=</span> <span class="hl kwd">PyTuple_Pack</span><span class="hl opt">(</span><span class="hl num">2</span><span class="hl opt">,</span> k<span class="hl opt">,</span> k<span class="hl opt">-&gt;</span>ob_type<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(!</span>tuple <span class="hl opt">||</span> <span class="hl kwd">PyDict_SetItem</span><span class="hl opt">(</span>dest<span class="hl opt">,</span> tuple<span class="hl opt">,</span> item<span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">) {</span>
                <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>item<span class="hl opt">);</span>
                <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>dest<span class="hl opt">);</span>
                <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>tuple<span class="hl opt">);</span>
                <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
            <span class="hl opt">}</span>
            <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>item<span class="hl opt">);</span>
            <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>tuple<span class="hl opt">);</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> dest<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static void</span>
<span class="hl kwd">compiler_unit_check</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler_unit <span class="hl opt">*</span>u<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>block<span class="hl opt">;</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>block <span class="hl opt">=</span> u<span class="hl opt">-&gt;</span>u_blocks<span class="hl opt">;</span> block <span class="hl opt">!=</span> NULL<span class="hl opt">;</span> block <span class="hl opt">=</span> block<span class="hl opt">-&gt;</span>b_list<span class="hl opt">) {</span>
        <span class="hl kwa">assert</span><span class="hl opt">((</span><span class="hl kwb">void</span> <span class="hl opt">*)</span>block <span class="hl opt">!= (</span><span class="hl kwb">void</span> <span class="hl opt">*)</span><span class="hl num">0xcbcbcbcb</span><span class="hl opt">);</span>
        <span class="hl kwa">assert</span><span class="hl opt">((</span><span class="hl kwb">void</span> <span class="hl opt">*)</span>block <span class="hl opt">!= (</span><span class="hl kwb">void</span> <span class="hl opt">*)</span><span class="hl num">0xfbfbfbfb</span><span class="hl opt">);</span>
        <span class="hl kwa">assert</span><span class="hl opt">((</span><span class="hl kwb">void</span> <span class="hl opt">*)</span>block <span class="hl opt">!= (</span><span class="hl kwb">void</span> <span class="hl opt">*)</span><span class="hl num">0xdbdbdbdb</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>block<span class="hl opt">-&gt;</span>b_instr <span class="hl opt">!=</span> NULL<span class="hl opt">) {</span>
            <span class="hl kwa">assert</span><span class="hl opt">(</span>block<span class="hl opt">-&gt;</span>b_ialloc <span class="hl opt">&gt;</span> <span class="hl num">0</span><span class="hl opt">);</span>
            <span class="hl kwa">assert</span><span class="hl opt">(</span>block<span class="hl opt">-&gt;</span>b_iused <span class="hl opt">&gt;</span> <span class="hl num">0</span><span class="hl opt">);</span>
            <span class="hl kwa">assert</span><span class="hl opt">(</span>block<span class="hl opt">-&gt;</span>b_ialloc <span class="hl opt">&gt;=</span> block<span class="hl opt">-&gt;</span>b_iused<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">else</span> <span class="hl opt">{</span>
            <span class="hl kwa">assert</span> <span class="hl opt">(</span>block<span class="hl opt">-&gt;</span>b_iused <span class="hl opt">==</span> <span class="hl num">0</span><span class="hl opt">);</span>
            <span class="hl kwa">assert</span> <span class="hl opt">(</span>block<span class="hl opt">-&gt;</span>b_ialloc <span class="hl opt">==</span> <span class="hl num">0</span><span class="hl opt">);</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>
<span class="hl opt">}</span>

<span class="hl kwb">static void</span>
<span class="hl kwd">compiler_unit_free</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler_unit <span class="hl opt">*</span>u<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>b<span class="hl opt">, *</span>next<span class="hl opt">;</span>

    <span class="hl kwd">compiler_unit_check</span><span class="hl opt">(</span>u<span class="hl opt">);</span>
    b <span class="hl opt">=</span> u<span class="hl opt">-&gt;</span>u_blocks<span class="hl opt">;</span>
    <span class="hl kwa">while</span> <span class="hl opt">(</span>b <span class="hl opt">!=</span> NULL<span class="hl opt">) {</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>b<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">)</span>
            <span class="hl kwd">PyObject_Free</span><span class="hl opt">((</span><span class="hl kwb">void</span> <span class="hl opt">*)</span>b<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">);</span>
        next <span class="hl opt">=</span> b<span class="hl opt">-&gt;</span>b_list<span class="hl opt">;</span>
        <span class="hl kwd">PyObject_Free</span><span class="hl opt">((</span><span class="hl kwb">void</span> <span class="hl opt">*)</span>b<span class="hl opt">);</span>
        b <span class="hl opt">=</span> next<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">Py_CLEAR</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">);</span>
    <span class="hl kwd">Py_CLEAR</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_name<span class="hl opt">);</span>
    <span class="hl kwd">Py_CLEAR</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_consts<span class="hl opt">);</span>
    <span class="hl kwd">Py_CLEAR</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_names<span class="hl opt">);</span>
    <span class="hl kwd">Py_CLEAR</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_varnames<span class="hl opt">);</span>
    <span class="hl kwd">Py_CLEAR</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_freevars<span class="hl opt">);</span>
    <span class="hl kwd">Py_CLEAR</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_cellvars<span class="hl opt">);</span>
    <span class="hl kwd">Py_CLEAR</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_private<span class="hl opt">);</span>
    <span class="hl kwd">PyObject_Free</span><span class="hl opt">(</span>u<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_enter_scope</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> identifier name<span class="hl opt">,</span> <span class="hl kwb">void</span> <span class="hl opt">*</span>key<span class="hl opt">,</span>
                     <span class="hl kwb">int</span> lineno<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">struct</span> compiler_unit <span class="hl opt">*</span>u<span class="hl opt">;</span>

    u <span class="hl opt">= (</span><span class="hl kwb">struct</span> compiler_unit <span class="hl opt">*)</span><span class="hl kwd">PyObject_Malloc</span><span class="hl opt">(</span><span class="hl kwa">sizeof</span><span class="hl opt">(</span>
                                            <span class="hl kwb">struct</span> compiler_unit<span class="hl opt">));</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>u<span class="hl opt">) {</span>
        <span class="hl kwd">PyErr_NoMemory</span><span class="hl opt">();</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">memset</span><span class="hl opt">(</span>u<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler_unit<span class="hl opt">));</span>
    u<span class="hl opt">-&gt;</span>u_argcount <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    u<span class="hl opt">-&gt;</span>u_kwonlyargcount <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    u<span class="hl opt">-&gt;</span>u_ste <span class="hl opt">=</span> <span class="hl kwd">PySymtable_Lookup</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_st<span class="hl opt">,</span> key<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">) {</span>
        <span class="hl kwd">compiler_unit_free</span><span class="hl opt">(</span>u<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">Py_INCREF</span><span class="hl opt">(</span>name<span class="hl opt">);</span>
    u<span class="hl opt">-&gt;</span>u_name <span class="hl opt">=</span> name<span class="hl opt">;</span>
    u<span class="hl opt">-&gt;</span>u_varnames <span class="hl opt">=</span> <span class="hl kwd">list2dict</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">-&gt;</span>ste_varnames<span class="hl opt">);</span>
    u<span class="hl opt">-&gt;</span>u_cellvars <span class="hl opt">=</span> <span class="hl kwd">dictbytype</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">-&gt;</span>ste_symbols<span class="hl opt">,</span> CELL<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>u<span class="hl opt">-&gt;</span>u_varnames <span class="hl opt">|| !</span>u<span class="hl opt">-&gt;</span>u_cellvars<span class="hl opt">) {</span>
        <span class="hl kwd">compiler_unit_free</span><span class="hl opt">(</span>u<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>

    u<span class="hl opt">-&gt;</span>u_freevars <span class="hl opt">=</span> <span class="hl kwd">dictbytype</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">-&gt;</span>ste_symbols<span class="hl opt">,</span> FREE<span class="hl opt">,</span> DEF_FREE_CLASS<span class="hl opt">,</span>
                               <span class="hl kwd">PyDict_Size</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_cellvars<span class="hl opt">));</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>u<span class="hl opt">-&gt;</span>u_freevars<span class="hl opt">) {</span>
        <span class="hl kwd">compiler_unit_free</span><span class="hl opt">(</span>u<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>

    u<span class="hl opt">-&gt;</span>u_blocks <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    u<span class="hl opt">-&gt;</span>u_nfblocks <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    u<span class="hl opt">-&gt;</span>u_firstlineno <span class="hl opt">=</span> lineno<span class="hl opt">;</span>
    u<span class="hl opt">-&gt;</span>u_lineno <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    u<span class="hl opt">-&gt;</span>u_col_offset <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    u<span class="hl opt">-&gt;</span>u_lineno_set <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    u<span class="hl opt">-&gt;</span>u_consts <span class="hl opt">=</span> <span class="hl kwd">PyDict_New</span><span class="hl opt">();</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>u<span class="hl opt">-&gt;</span>u_consts<span class="hl opt">) {</span>
        <span class="hl kwd">compiler_unit_free</span><span class="hl opt">(</span>u<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    u<span class="hl opt">-&gt;</span>u_names <span class="hl opt">=</span> <span class="hl kwd">PyDict_New</span><span class="hl opt">();</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>u<span class="hl opt">-&gt;</span>u_names<span class="hl opt">) {</span>
        <span class="hl kwd">compiler_unit_free</span><span class="hl opt">(</span>u<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>

    u<span class="hl opt">-&gt;</span>u_private <span class="hl opt">=</span> NULL<span class="hl opt">;</span>

    <span class="hl com">/* Push the old compiler_unit on the stack. */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">) {</span>
        PyObject <span class="hl opt">*</span>capsule <span class="hl opt">=</span> <span class="hl kwd">PyCapsule_New</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">,</span> COMPILER_CAPSULE_NAME_COMPILER_UNIT<span class="hl opt">,</span> NULL<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>capsule <span class="hl opt">||</span> <span class="hl kwd">PyList_Append</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_stack<span class="hl opt">,</span> capsule<span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">) {</span>
            <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>capsule<span class="hl opt">);</span>
            <span class="hl kwd">compiler_unit_free</span><span class="hl opt">(</span>u<span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>capsule<span class="hl opt">);</span>
        u<span class="hl opt">-&gt;</span>u_private <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_private<span class="hl opt">;</span>
        <span class="hl kwd">Py_XINCREF</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_private<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    c<span class="hl opt">-&gt;</span>u <span class="hl opt">=</span> u<span class="hl opt">;</span>

    c<span class="hl opt">-&gt;</span>c_nestlevel<span class="hl opt">++;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">compiler_use_new_block</span><span class="hl opt">(</span>c<span class="hl opt">) ==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static void</span>
<span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> n<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>capsule<span class="hl opt">;</span>

    c<span class="hl opt">-&gt;</span>c_nestlevel<span class="hl opt">--;</span>
    <span class="hl kwd">compiler_unit_free</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">);</span>
    <span class="hl com">/* Restore c-&gt;u to the parent unit. */</span>
    n <span class="hl opt">=</span> <span class="hl kwd">PyList_GET_SIZE</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_stack<span class="hl opt">) -</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>n <span class="hl opt">&gt;=</span> <span class="hl num">0</span><span class="hl opt">) {</span>
        capsule <span class="hl opt">=</span> <span class="hl kwd">PyList_GET_ITEM</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_stack<span class="hl opt">,</span> n<span class="hl opt">);</span>
        c<span class="hl opt">-&gt;</span>u <span class="hl opt">= (</span><span class="hl kwb">struct</span> compiler_unit <span class="hl opt">*)</span><span class="hl kwd">PyCapsule_GetPointer</span><span class="hl opt">(</span>capsule<span class="hl opt">,</span> COMPILER_CAPSULE_NAME_COMPILER_UNIT<span class="hl opt">);</span>
        <span class="hl kwa">assert</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">);</span>
        <span class="hl com">/* we are deleting from a list so this really shouldn't fail */</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">PySequence_DelItem</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_stack<span class="hl opt">,</span> n<span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
            <span class="hl kwd">Py_FatalError</span><span class="hl opt">(</span><span class="hl str">&quot;compiler_exit_scope()&quot;</span><span class="hl opt">);</span>
        <span class="hl kwd">compiler_unit_check</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else</span>
        c<span class="hl opt">-&gt;</span>u <span class="hl opt">=</span> NULL<span class="hl opt">;</span>

<span class="hl opt">}</span>

<span class="hl com">/* Allocate a new block and return a pointer to it.</span>
<span class="hl com">   Returns NULL on error.</span>
<span class="hl com">*/</span>

<span class="hl kwb">static</span> basicblock <span class="hl opt">*</span>
<span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>b<span class="hl opt">;</span>
    <span class="hl kwb">struct</span> compiler_unit <span class="hl opt">*</span>u<span class="hl opt">;</span>

    u <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">;</span>
    b <span class="hl opt">= (</span>basicblock <span class="hl opt">*)</span><span class="hl kwd">PyObject_Malloc</span><span class="hl opt">(</span><span class="hl kwa">sizeof</span><span class="hl opt">(</span>basicblock<span class="hl opt">));</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>b <span class="hl opt">==</span> NULL<span class="hl opt">) {</span>
        <span class="hl kwd">PyErr_NoMemory</span><span class="hl opt">();</span>
        <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">memset</span><span class="hl opt">((</span><span class="hl kwb">void</span> <span class="hl opt">*)</span>b<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span>basicblock<span class="hl opt">));</span>
    <span class="hl com">/* Extend the singly linked list of blocks with new block. */</span>
    b<span class="hl opt">-&gt;</span>b_list <span class="hl opt">=</span> u<span class="hl opt">-&gt;</span>u_blocks<span class="hl opt">;</span>
    u<span class="hl opt">-&gt;</span>u_blocks <span class="hl opt">=</span> b<span class="hl opt">;</span>
    <span class="hl kwa">return</span> b<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static</span> basicblock <span class="hl opt">*</span>
<span class="hl kwd">compiler_use_new_block</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>block <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>block <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock <span class="hl opt">=</span> block<span class="hl opt">;</span>
    <span class="hl kwa">return</span> block<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static</span> basicblock <span class="hl opt">*</span>
<span class="hl kwd">compiler_next_block</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>block <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>block <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock<span class="hl opt">-&gt;</span>b_next <span class="hl opt">=</span> block<span class="hl opt">;</span>
    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock <span class="hl opt">=</span> block<span class="hl opt">;</span>
    <span class="hl kwa">return</span> block<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static</span> basicblock <span class="hl opt">*</span>
<span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> basicblock <span class="hl opt">*</span>block<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>block <span class="hl opt">!=</span> NULL<span class="hl opt">);</span>
    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock<span class="hl opt">-&gt;</span>b_next <span class="hl opt">=</span> block<span class="hl opt">;</span>
    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock <span class="hl opt">=</span> block<span class="hl opt">;</span>
    <span class="hl kwa">return</span> block<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl com">/* Returns the offset of the next instruction in the current block's</span>
<span class="hl com">   b_instr array.  Resizes the b_instr as necessary.</span>
<span class="hl com">   Returns -1 on failure.</span>
<span class="hl com">*/</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_next_instr</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> basicblock <span class="hl opt">*</span>b<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>b <span class="hl opt">!=</span> NULL<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>b<span class="hl opt">-&gt;</span>b_instr <span class="hl opt">==</span> NULL<span class="hl opt">) {</span>
        b<span class="hl opt">-&gt;</span>b_instr <span class="hl opt">= (</span><span class="hl kwb">struct</span> instr <span class="hl opt">*)</span><span class="hl kwd">PyObject_Malloc</span><span class="hl opt">(</span>
                         <span class="hl kwa">sizeof</span><span class="hl opt">(</span><span class="hl kwb">struct</span> instr<span class="hl opt">) *</span> DEFAULT_BLOCK_SIZE<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>b<span class="hl opt">-&gt;</span>b_instr <span class="hl opt">==</span> NULL<span class="hl opt">) {</span>
            <span class="hl kwd">PyErr_NoMemory</span><span class="hl opt">();</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        b<span class="hl opt">-&gt;</span>b_ialloc <span class="hl opt">=</span> DEFAULT_BLOCK_SIZE<span class="hl opt">;</span>
        <span class="hl kwd">memset</span><span class="hl opt">((</span><span class="hl kwb">char</span> <span class="hl opt">*)</span>b<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span>
               <span class="hl kwa">sizeof</span><span class="hl opt">(</span><span class="hl kwb">struct</span> instr<span class="hl opt">) *</span> DEFAULT_BLOCK_SIZE<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else if</span> <span class="hl opt">(</span>b<span class="hl opt">-&gt;</span>b_iused <span class="hl opt">==</span> b<span class="hl opt">-&gt;</span>b_ialloc<span class="hl opt">) {</span>
        <span class="hl kwb">struct</span> instr <span class="hl opt">*</span>tmp<span class="hl opt">;</span>
        <span class="hl kwb">size_t</span> oldsize<span class="hl opt">,</span> newsize<span class="hl opt">;</span>
        oldsize <span class="hl opt">=</span> b<span class="hl opt">-&gt;</span>b_ialloc <span class="hl opt">*</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span><span class="hl kwb">struct</span> instr<span class="hl opt">);</span>
        newsize <span class="hl opt">=</span> oldsize <span class="hl opt">&lt;&lt;</span> <span class="hl num">1</span><span class="hl opt">;</span>

        <span class="hl kwa">if</span> <span class="hl opt">(</span>oldsize <span class="hl opt">&gt; (</span>PY_SIZE_MAX <span class="hl opt">&gt;&gt;</span> <span class="hl num">1</span><span class="hl opt">)) {</span>
            <span class="hl kwd">PyErr_NoMemory</span><span class="hl opt">();</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>

        <span class="hl kwa">if</span> <span class="hl opt">(</span>newsize <span class="hl opt">==</span> <span class="hl num">0</span><span class="hl opt">) {</span>
            <span class="hl kwd">PyErr_NoMemory</span><span class="hl opt">();</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        b<span class="hl opt">-&gt;</span>b_ialloc <span class="hl opt">&lt;&lt;=</span> <span class="hl num">1</span><span class="hl opt">;</span>
        tmp <span class="hl opt">= (</span><span class="hl kwb">struct</span> instr <span class="hl opt">*)</span><span class="hl kwd">PyObject_Realloc</span><span class="hl opt">(</span>
                                        <span class="hl opt">(</span><span class="hl kwb">void</span> <span class="hl opt">*)</span>b<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">,</span> newsize<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>tmp <span class="hl opt">==</span> NULL<span class="hl opt">) {</span>
            <span class="hl kwd">PyErr_NoMemory</span><span class="hl opt">();</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        b<span class="hl opt">-&gt;</span>b_instr <span class="hl opt">=</span> tmp<span class="hl opt">;</span>
        <span class="hl kwd">memset</span><span class="hl opt">((</span><span class="hl kwb">char</span> <span class="hl opt">*)</span>b<span class="hl opt">-&gt;</span>b_instr <span class="hl opt">+</span> oldsize<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span> newsize <span class="hl opt">-</span> oldsize<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> b<span class="hl opt">-&gt;</span>b_iused<span class="hl opt">++;</span>
<span class="hl opt">}</span>

<span class="hl com">/* Set the i_lineno member of the instruction at offset off if the</span>
<span class="hl com">   line number for the current expression/statement has not</span>
<span class="hl com">   already been set.  If it has been set, the call has no effect.</span>
<span class="hl com"></span>
<span class="hl com">   The line number is reset in the following cases:</span>
<span class="hl com">   - when entering a new scope</span>
<span class="hl com">   - on each statement</span>
<span class="hl com">   - on each expression that start a new line</span>
<span class="hl com">   - before the &quot;except&quot; clause</span>
<span class="hl com">   - before the &quot;for&quot; and &quot;while&quot; expressions</span>
<span class="hl com">*/</span>

<span class="hl kwb">static void</span>
<span class="hl kwd">compiler_set_lineno</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">int</span> off<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>b<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno_set<span class="hl opt">)</span>
        <span class="hl kwa">return</span><span class="hl opt">;</span>
    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno_set <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
    b <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock<span class="hl opt">;</span>
    b<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">[</span>off<span class="hl opt">].</span>i_lineno <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">opcode_stack_effect</span><span class="hl opt">(</span><span class="hl kwb">int</span> opcode<span class="hl opt">,</span> <span class="hl kwb">int</span> oparg<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>opcode<span class="hl opt">) {</span>
        <span class="hl kwa">case</span> POP_TOP<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> ROT_TWO<span class="hl opt">:</span>
        <span class="hl kwa">case</span> ROT_THREE<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> DUP_TOP<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> DUP_TOP_TWO<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">2</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> UNARY_POSITIVE<span class="hl opt">:</span>
        <span class="hl kwa">case</span> UNARY_NEGATIVE<span class="hl opt">:</span>
        <span class="hl kwa">case</span> UNARY_NOT<span class="hl opt">:</span>
        <span class="hl kwa">case</span> UNARY_INVERT<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> SET_ADD<span class="hl opt">:</span>
        <span class="hl kwa">case</span> LIST_APPEND<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> MAP_ADD<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">2</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> BINARY_POWER<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BINARY_MULTIPLY<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BINARY_MODULO<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BINARY_ADD<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BINARY_SUBTRACT<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BINARY_SUBSCR<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BINARY_FLOOR_DIVIDE<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BINARY_TRUE_DIVIDE<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> INPLACE_FLOOR_DIVIDE<span class="hl opt">:</span>
        <span class="hl kwa">case</span> INPLACE_TRUE_DIVIDE<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> INPLACE_ADD<span class="hl opt">:</span>
        <span class="hl kwa">case</span> INPLACE_SUBTRACT<span class="hl opt">:</span>
        <span class="hl kwa">case</span> INPLACE_MULTIPLY<span class="hl opt">:</span>
        <span class="hl kwa">case</span> INPLACE_MODULO<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> STORE_SUBSCR<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">3</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> STORE_MAP<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">2</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> DELETE_SUBSCR<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">2</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> BINARY_LSHIFT<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BINARY_RSHIFT<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BINARY_AND<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BINARY_XOR<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BINARY_OR<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> INPLACE_POWER<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> GET_ITER<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> PRINT_EXPR<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> LOAD_BUILD_CLASS<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> INPLACE_LSHIFT<span class="hl opt">:</span>
        <span class="hl kwa">case</span> INPLACE_RSHIFT<span class="hl opt">:</span>
        <span class="hl kwa">case</span> INPLACE_AND<span class="hl opt">:</span>
        <span class="hl kwa">case</span> INPLACE_XOR<span class="hl opt">:</span>
        <span class="hl kwa">case</span> INPLACE_OR<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> BREAK_LOOP<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> SETUP_WITH<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">7</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> WITH_CLEANUP<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span> <span class="hl com">/* XXX Sometimes more */</span>
        <span class="hl kwa">case</span> STORE_LOCALS<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> RETURN_VALUE<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> IMPORT_STAR<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> YIELD_VALUE<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> POP_BLOCK<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> POP_EXCEPT<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>  <span class="hl com">/* -3 except if bad bytecode */</span>
        <span class="hl kwa">case</span> END_FINALLY<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span> <span class="hl com">/* or -2 or -3 if exception occurred */</span>

        <span class="hl kwa">case</span> STORE_NAME<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> DELETE_NAME<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> UNPACK_SEQUENCE<span class="hl opt">:</span>
            <span class="hl kwa">return</span> oparg<span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> UNPACK_EX<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">(</span>oparg<span class="hl opt">&amp;</span><span class="hl num">0xFF</span><span class="hl opt">) + (</span>oparg<span class="hl opt">&gt;&gt;</span><span class="hl num">8</span><span class="hl opt">);</span>
        <span class="hl kwa">case</span> FOR_ITER<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span> <span class="hl com">/* or -1, at end of iterator */</span>

        <span class="hl kwa">case</span> STORE_ATTR<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">2</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> DELETE_ATTR<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> STORE_GLOBAL<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> DELETE_GLOBAL<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> LOAD_CONST<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> LOAD_NAME<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> BUILD_TUPLE<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BUILD_LIST<span class="hl opt">:</span>
        <span class="hl kwa">case</span> BUILD_SET<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">-</span>oparg<span class="hl opt">;</span>
        <span class="hl kwa">case</span> BUILD_MAP<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> LOAD_ATTR<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> COMPARE_OP<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> IMPORT_NAME<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> IMPORT_FROM<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> JUMP_FORWARD<span class="hl opt">:</span>
        <span class="hl kwa">case</span> JUMP_IF_TRUE_OR_POP<span class="hl opt">:</span>  <span class="hl com">/* -1 if jump not taken */</span>
        <span class="hl kwa">case</span> JUMP_IF_FALSE_OR_POP<span class="hl opt">:</span>  <span class="hl com">/*  &quot;&quot; */</span>
        <span class="hl kwa">case</span> JUMP_ABSOLUTE<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> POP_JUMP_IF_FALSE<span class="hl opt">:</span>
        <span class="hl kwa">case</span> POP_JUMP_IF_TRUE<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> LOAD_GLOBAL<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> CONTINUE_LOOP<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> SETUP_LOOP<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> SETUP_EXCEPT<span class="hl opt">:</span>
        <span class="hl kwa">case</span> SETUP_FINALLY<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">6</span><span class="hl opt">;</span> <span class="hl com">/* can push 3 values for the new exception</span>
<span class="hl com">                + 3 others for the previous exception state */</span>

        <span class="hl kwa">case</span> LOAD_FAST<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> STORE_FAST<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> DELETE_FAST<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> RAISE_VARARGS<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span>oparg<span class="hl opt">;</span>
<span class="hl ppc">#define NARGS(o) (((o) % 256) + 2*(((o) / 256) % 256))</span>
        <span class="hl kwa">case</span> CALL_FUNCTION<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl kwd">NARGS</span><span class="hl opt">(</span>oparg<span class="hl opt">);</span>
        <span class="hl kwa">case</span> CALL_FUNCTION_VAR<span class="hl opt">:</span>
        <span class="hl kwa">case</span> CALL_FUNCTION_KW<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl kwd">NARGS</span><span class="hl opt">(</span>oparg<span class="hl opt">)-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> CALL_FUNCTION_VAR_KW<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl kwd">NARGS</span><span class="hl opt">(</span>oparg<span class="hl opt">)-</span><span class="hl num">2</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> MAKE_FUNCTION<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl kwd">NARGS</span><span class="hl opt">(</span>oparg<span class="hl opt">) - ((</span>oparg <span class="hl opt">&gt;&gt;</span> <span class="hl num">16</span><span class="hl opt">) &amp;</span> <span class="hl num">0xffff</span><span class="hl opt">);</span>
        <span class="hl kwa">case</span> MAKE_CLOSURE<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span> <span class="hl opt">-</span> <span class="hl kwd">NARGS</span><span class="hl opt">(</span>oparg<span class="hl opt">) - ((</span>oparg <span class="hl opt">&gt;&gt;</span> <span class="hl num">16</span><span class="hl opt">) &amp;</span> <span class="hl num">0xffff</span><span class="hl opt">);</span>
<span class="hl ppc">#undef NARGS</span>
        <span class="hl kwa">case</span> BUILD_SLICE<span class="hl opt">:</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span>oparg <span class="hl opt">==</span> <span class="hl num">3</span><span class="hl opt">)</span>
                <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">2</span><span class="hl opt">;</span>
            <span class="hl kwa">else</span>
                <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>

        <span class="hl kwa">case</span> LOAD_CLOSURE<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> LOAD_DEREF<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> STORE_DEREF<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> DELETE_DEREF<span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">default</span><span class="hl opt">:</span>
            <span class="hl kwd">fprintf</span><span class="hl opt">(</span>stderr<span class="hl opt">,</span> <span class="hl str">&quot;opcode = %d</span><span class="hl esc">\n</span><span class="hl str">&quot;</span><span class="hl opt">,</span> opcode<span class="hl opt">);</span>
            <span class="hl kwd">Py_FatalError</span><span class="hl opt">(</span><span class="hl str">&quot;opcode_stack_effect()&quot;</span><span class="hl opt">);</span>

    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span> <span class="hl com">/* not reachable */</span>
<span class="hl opt">}</span>

<span class="hl com">/* Add an opcode with no argument.</span>
<span class="hl com">   Returns 0 on failure, 1 on success.</span>
<span class="hl com">*/</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_addop</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">int</span> opcode<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>b<span class="hl opt">;</span>
    <span class="hl kwb">struct</span> instr <span class="hl opt">*</span>i<span class="hl opt">;</span>
    <span class="hl kwb">int</span> off<span class="hl opt">;</span>
    off <span class="hl opt">=</span> <span class="hl kwd">compiler_next_instr</span><span class="hl opt">(</span>c<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>off <span class="hl opt">&lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    b <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock<span class="hl opt">;</span>
    i <span class="hl opt">= &amp;</span>b<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">[</span>off<span class="hl opt">];</span>
    i<span class="hl opt">-&gt;</span>i_opcode <span class="hl opt">=</span> opcode<span class="hl opt">;</span>
    i<span class="hl opt">-&gt;</span>i_hasarg <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>opcode <span class="hl opt">==</span> RETURN_VALUE<span class="hl opt">)</span>
        b<span class="hl opt">-&gt;</span>b_return <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwd">compiler_set_lineno</span><span class="hl opt">(</span>c<span class="hl opt">,</span> off<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_add_o</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> PyObject <span class="hl opt">*</span>dict<span class="hl opt">,</span> PyObject <span class="hl opt">*</span>o<span class="hl opt">)</span>
<span class="hl opt">{</span>
    PyObject <span class="hl opt">*</span>t<span class="hl opt">, *</span>v<span class="hl opt">;</span>
    Py_ssize_t arg<span class="hl opt">;</span>
    <span class="hl kwb">double</span> d<span class="hl opt">;</span>

    <span class="hl com">/* necessary to make sure types aren't coerced (e.g., int and long) */</span>
    <span class="hl com">/* _and_ to distinguish 0.0 from -0.0 e.g. on IEEE platforms */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">PyFloat_Check</span><span class="hl opt">(</span>o<span class="hl opt">)) {</span>
        d <span class="hl opt">=</span> <span class="hl kwd">PyFloat_AS_DOUBLE</span><span class="hl opt">(</span>o<span class="hl opt">);</span>
        <span class="hl com">/* all we need is to make the tuple different in either the 0.0</span>
<span class="hl com">         * or -0.0 case from all others, just to avoid the &quot;coercion&quot;.</span>
<span class="hl com">         */</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>d <span class="hl opt">==</span> <span class="hl num">0.0</span> <span class="hl opt">&amp;&amp;</span> <span class="hl kwd">copysign</span><span class="hl opt">(</span><span class="hl num">1.0</span><span class="hl opt">,</span> d<span class="hl opt">) &lt;</span> <span class="hl num">0.0</span><span class="hl opt">)</span>
            t <span class="hl opt">=</span> <span class="hl kwd">PyTuple_Pack</span><span class="hl opt">(</span><span class="hl num">3</span><span class="hl opt">,</span> o<span class="hl opt">,</span> o<span class="hl opt">-&gt;</span>ob_type<span class="hl opt">,</span> Py_None<span class="hl opt">);</span>
        <span class="hl kwa">else</span>
            t <span class="hl opt">=</span> <span class="hl kwd">PyTuple_Pack</span><span class="hl opt">(</span><span class="hl num">2</span><span class="hl opt">,</span> o<span class="hl opt">,</span> o<span class="hl opt">-&gt;</span>ob_type<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else if</span> <span class="hl opt">(</span><span class="hl kwd">PyComplex_Check</span><span class="hl opt">(</span>o<span class="hl opt">)) {</span>
        Py_complex z<span class="hl opt">;</span>
        <span class="hl kwb">int</span> real_negzero<span class="hl opt">,</span> imag_negzero<span class="hl opt">;</span>
        <span class="hl com">/* For the complex case we must make complex(x, 0.)</span>
<span class="hl com">           different from complex(x, -0.) and complex(0., y)</span>
<span class="hl com">           different from complex(-0., y), for any x and y.</span>
<span class="hl com">           All four complex zeros must be distinguished.*/</span>
        z <span class="hl opt">=</span> <span class="hl kwd">PyComplex_AsCComplex</span><span class="hl opt">(</span>o<span class="hl opt">);</span>
        real_negzero <span class="hl opt">=</span> z<span class="hl opt">.</span>real <span class="hl opt">==</span> <span class="hl num">0.0</span> <span class="hl opt">&amp;&amp;</span> <span class="hl kwd">copysign</span><span class="hl opt">(</span><span class="hl num">1.0</span><span class="hl opt">,</span> z<span class="hl opt">.</span>real<span class="hl opt">) &lt;</span> <span class="hl num">0.0</span><span class="hl opt">;</span>
        imag_negzero <span class="hl opt">=</span> z<span class="hl opt">.</span>imag <span class="hl opt">==</span> <span class="hl num">0.0</span> <span class="hl opt">&amp;&amp;</span> <span class="hl kwd">copysign</span><span class="hl opt">(</span><span class="hl num">1.0</span><span class="hl opt">,</span> z<span class="hl opt">.</span>imag<span class="hl opt">) &lt;</span> <span class="hl num">0.0</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>real_negzero <span class="hl opt">&amp;&amp;</span> imag_negzero<span class="hl opt">) {</span>
            t <span class="hl opt">=</span> <span class="hl kwd">PyTuple_Pack</span><span class="hl opt">(</span><span class="hl num">5</span><span class="hl opt">,</span> o<span class="hl opt">,</span> o<span class="hl opt">-&gt;</span>ob_type<span class="hl opt">,</span>
                             Py_None<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> Py_None<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">else if</span> <span class="hl opt">(</span>imag_negzero<span class="hl opt">) {</span>
            t <span class="hl opt">=</span> <span class="hl kwd">PyTuple_Pack</span><span class="hl opt">(</span><span class="hl num">4</span><span class="hl opt">,</span> o<span class="hl opt">,</span> o<span class="hl opt">-&gt;</span>ob_type<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> Py_None<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">else if</span> <span class="hl opt">(</span>real_negzero<span class="hl opt">) {</span>
            t <span class="hl opt">=</span> <span class="hl kwd">PyTuple_Pack</span><span class="hl opt">(</span><span class="hl num">3</span><span class="hl opt">,</span> o<span class="hl opt">,</span> o<span class="hl opt">-&gt;</span>ob_type<span class="hl opt">,</span> Py_None<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">else</span> <span class="hl opt">{</span>
            t <span class="hl opt">=</span> <span class="hl kwd">PyTuple_Pack</span><span class="hl opt">(</span><span class="hl num">2</span><span class="hl opt">,</span> o<span class="hl opt">,</span> o<span class="hl opt">-&gt;</span>ob_type<span class="hl opt">);</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else</span> <span class="hl opt">{</span>
        t <span class="hl opt">=</span> <span class="hl kwd">PyTuple_Pack</span><span class="hl opt">(</span><span class="hl num">2</span><span class="hl opt">,</span> o<span class="hl opt">,</span> o<span class="hl opt">-&gt;</span>ob_type<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>t <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>

    v <span class="hl opt">=</span> <span class="hl kwd">PyDict_GetItem</span><span class="hl opt">(</span>dict<span class="hl opt">,</span> t<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>v<span class="hl opt">) {</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">PyErr_Occurred</span><span class="hl opt">())</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        arg <span class="hl opt">=</span> <span class="hl kwd">PyDict_Size</span><span class="hl opt">(</span>dict<span class="hl opt">);</span>
        v <span class="hl opt">=</span> <span class="hl kwd">PyLong_FromLong</span><span class="hl opt">(</span>arg<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>v<span class="hl opt">) {</span>
            <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>t<span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">PyDict_SetItem</span><span class="hl opt">(</span>dict<span class="hl opt">,</span> t<span class="hl opt">,</span> v<span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">) {</span>
            <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>t<span class="hl opt">);</span>
            <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>v<span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>v<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else</span>
        arg <span class="hl opt">=</span> <span class="hl kwd">PyLong_AsLong</span><span class="hl opt">(</span>v<span class="hl opt">);</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>t<span class="hl opt">);</span>
    <span class="hl kwa">return</span> arg<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_addop_o</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">int</span> opcode<span class="hl opt">,</span> PyObject <span class="hl opt">*</span>dict<span class="hl opt">,</span>
                     PyObject <span class="hl opt">*</span>o<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> arg <span class="hl opt">=</span> <span class="hl kwd">compiler_add_o</span><span class="hl opt">(</span>c<span class="hl opt">,</span> dict<span class="hl opt">,</span> o<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>arg <span class="hl opt">&lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">return</span> <span class="hl kwd">compiler_addop_i</span><span class="hl opt">(</span>c<span class="hl opt">,</span> opcode<span class="hl opt">,</span> arg<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_addop_name</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">int</span> opcode<span class="hl opt">,</span> PyObject <span class="hl opt">*</span>dict<span class="hl opt">,</span>
                    PyObject <span class="hl opt">*</span>o<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> arg<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>mangled <span class="hl opt">=</span> <span class="hl kwd">_Py_Mangle</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_private<span class="hl opt">,</span> o<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>mangled<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    arg <span class="hl opt">=</span> <span class="hl kwd">compiler_add_o</span><span class="hl opt">(</span>c<span class="hl opt">,</span> dict<span class="hl opt">,</span> mangled<span class="hl opt">);</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>mangled<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>arg <span class="hl opt">&lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">return</span> <span class="hl kwd">compiler_addop_i</span><span class="hl opt">(</span>c<span class="hl opt">,</span> opcode<span class="hl opt">,</span> arg<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl com">/* Add an opcode with an integer argument.</span>
<span class="hl com">   Returns 0 on failure, 1 on success.</span>
<span class="hl com">*/</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_addop_i</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">int</span> opcode<span class="hl opt">,</span> <span class="hl kwb">int</span> oparg<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">struct</span> instr <span class="hl opt">*</span>i<span class="hl opt">;</span>
    <span class="hl kwb">int</span> off<span class="hl opt">;</span>
    off <span class="hl opt">=</span> <span class="hl kwd">compiler_next_instr</span><span class="hl opt">(</span>c<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>off <span class="hl opt">&lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    i <span class="hl opt">= &amp;</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">[</span>off<span class="hl opt">];</span>
    i<span class="hl opt">-&gt;</span>i_opcode <span class="hl opt">=</span> opcode<span class="hl opt">;</span>
    i<span class="hl opt">-&gt;</span>i_oparg <span class="hl opt">=</span> oparg<span class="hl opt">;</span>
    i<span class="hl opt">-&gt;</span>i_hasarg <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwd">compiler_set_lineno</span><span class="hl opt">(</span>c<span class="hl opt">,</span> off<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_addop_j</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">int</span> opcode<span class="hl opt">,</span> basicblock <span class="hl opt">*</span>b<span class="hl opt">,</span> <span class="hl kwb">int</span> absolute<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">struct</span> instr <span class="hl opt">*</span>i<span class="hl opt">;</span>
    <span class="hl kwb">int</span> off<span class="hl opt">;</span>

    <span class="hl kwa">assert</span><span class="hl opt">(</span>b <span class="hl opt">!=</span> NULL<span class="hl opt">);</span>
    off <span class="hl opt">=</span> <span class="hl kwd">compiler_next_instr</span><span class="hl opt">(</span>c<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>off <span class="hl opt">&lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    i <span class="hl opt">= &amp;</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">[</span>off<span class="hl opt">];</span>
    i<span class="hl opt">-&gt;</span>i_opcode <span class="hl opt">=</span> opcode<span class="hl opt">;</span>
    i<span class="hl opt">-&gt;</span>i_target <span class="hl opt">=</span> b<span class="hl opt">;</span>
    i<span class="hl opt">-&gt;</span>i_hasarg <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>absolute<span class="hl opt">)</span>
        i<span class="hl opt">-&gt;</span>i_jabs <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwa">else</span>
        i<span class="hl opt">-&gt;</span>i_jrel <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwd">compiler_set_lineno</span><span class="hl opt">(</span>c<span class="hl opt">,</span> off<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl com">/* The distinction between NEW_BLOCK and NEXT_BLOCK is subtle.  (I'd</span>
<span class="hl com">   like to find better names.)  NEW_BLOCK() creates a new block and sets</span>
<span class="hl com">   it as the current block.  NEXT_BLOCK() also creates an implicit jump</span>
<span class="hl com">   from the current block to the new block.</span>
<span class="hl com">*/</span>

<span class="hl com">/* The returns inside these macros make it impossible to decref objects</span>
<span class="hl com">   created in the local function.  Local objects should use the arena.</span>
<span class="hl com">*/</span>


<span class="hl ppc">#define NEW_BLOCK(C) { \</span>
<span class="hl ppc">    if (compiler_use_new_block((C)) == NULL) \</span>
<span class="hl ppc">        return 0; \</span>
<span class="hl ppc">}</span>

<span class="hl ppc">#define NEXT_BLOCK(C) { \</span>
<span class="hl ppc">    if (compiler_next_block((C)) == NULL) \</span>
<span class="hl ppc">        return 0; \</span>
<span class="hl ppc">}</span>

<span class="hl ppc">#define ADDOP(C, OP) { \</span>
<span class="hl ppc">    if (!compiler_addop((C), (OP))) \</span>
<span class="hl ppc">        return 0; \</span>
<span class="hl ppc">}</span>

<span class="hl ppc">#define ADDOP_IN_SCOPE(C, OP) { \</span>
<span class="hl ppc">    if (!compiler_addop((C), (OP))) { \</span>
<span class="hl ppc">        compiler_exit_scope(c); \</span>
<span class="hl ppc">        return 0; \</span>
<span class="hl ppc">    } \</span>
<span class="hl ppc">}</span>

<span class="hl ppc">#define ADDOP_O(C, OP, O, TYPE) { \</span>
<span class="hl ppc">    if (!compiler_addop_o((C), (OP), (C)-&gt;u-&gt;u_ ## TYPE, (O))) \</span>
<span class="hl ppc">        return 0; \</span>
<span class="hl ppc">}</span>

<span class="hl ppc">#define ADDOP_NAME(C, OP, O, TYPE) { \</span>
<span class="hl ppc">    if (!compiler_addop_name((C), (OP), (C)-&gt;u-&gt;u_ ## TYPE, (O))) \</span>
<span class="hl ppc">        return 0; \</span>
<span class="hl ppc">}</span>

<span class="hl ppc">#define ADDOP_I(C, OP, O) { \</span>
<span class="hl ppc">    if (!compiler_addop_i((C), (OP), (O))) \</span>
<span class="hl ppc">        return 0; \</span>
<span class="hl ppc">}</span>

<span class="hl ppc">#define ADDOP_JABS(C, OP, O) { \</span>
<span class="hl ppc">    if (!compiler_addop_j((C), (OP), (O), 1)) \</span>
<span class="hl ppc">        return 0; \</span>
<span class="hl ppc">}</span>

<span class="hl ppc">#define ADDOP_JREL(C, OP, O) { \</span>
<span class="hl ppc">    if (!compiler_addop_j((C), (OP), (O), 0)) \</span>
<span class="hl ppc">        return 0; \</span>
<span class="hl ppc">}</span>

<span class="hl com">/* VISIT and VISIT_SEQ takes an ASDL type as their second argument.  They use</span>
<span class="hl com">   the ASDL name to synthesize the name of the C type and the visit function.</span>
<span class="hl com">*/</span>

<span class="hl ppc">#define VISIT(C, TYPE, V) {\</span>
<span class="hl ppc">    if (!compiler_visit_ ## TYPE((C), (V))) \</span>
<span class="hl ppc">        return 0; \</span>
<span class="hl ppc">}</span>

<span class="hl ppc">#define VISIT_IN_SCOPE(C, TYPE, V) {\</span>
<span class="hl ppc">    if (!compiler_visit_ ## TYPE((C), (V))) { \</span>
<span class="hl ppc">        compiler_exit_scope(c); \</span>
<span class="hl ppc">        return 0; \</span>
<span class="hl ppc">    } \</span>
<span class="hl ppc">}</span>

<span class="hl ppc">#define VISIT_SLICE(C, V, CTX) {\</span>
<span class="hl ppc">    if (!compiler_visit_slice((C), (V), (CTX))) \</span>
<span class="hl ppc">        return 0; \</span>
<span class="hl ppc">}</span>

<span class="hl ppc">#define VISIT_SEQ(C, TYPE, SEQ) { \</span>
<span class="hl ppc">    int _i; \</span>
<span class="hl ppc">    asdl_seq *seq = (SEQ);</span> <span class="hl com">/* avoid variable capture */</span><span class="hl ppc"> \</span>
<span class="hl ppc">    for (_i = 0; _i &lt; asdl_seq_LEN(seq); _i++) { \</span>
<span class="hl ppc">        TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, _i); \</span>
<span class="hl ppc">        if (!compiler_visit_ ## TYPE((C), elt)) \</span>
<span class="hl ppc">            return 0; \</span>
<span class="hl ppc">    } \</span>
<span class="hl ppc">}</span>

<span class="hl ppc">#define VISIT_SEQ_IN_SCOPE(C, TYPE, SEQ) { \</span>
<span class="hl ppc">    int _i; \</span>
<span class="hl ppc">    asdl_seq *seq = (SEQ);</span> <span class="hl com">/* avoid variable capture */</span><span class="hl ppc"> \</span>
<span class="hl ppc">    for (_i = 0; _i &lt; asdl_seq_LEN(seq); _i++) { \</span>
<span class="hl ppc">        TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, _i); \</span>
<span class="hl ppc">        if (!compiler_visit_ ## TYPE((C), elt)) { \</span>
<span class="hl ppc">            compiler_exit_scope(c); \</span>
<span class="hl ppc">            return 0; \</span>
<span class="hl ppc">        } \</span>
<span class="hl ppc">    } \</span>
<span class="hl ppc">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_isdocstring</span><span class="hl opt">(</span>stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>kind <span class="hl opt">!=</span> Expr_kind<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">return</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Expr<span class="hl opt">.</span>value<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> Str_kind<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl com">/* Compile a sequence of statements, checking for a docstring. */</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_body</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> asdl_seq <span class="hl opt">*</span>stmts<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    stmt_ty st<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>stmts<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
    st <span class="hl opt">= (</span>stmt_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>stmts<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">compiler_isdocstring</span><span class="hl opt">(</span>st<span class="hl opt">) &amp;&amp;</span> c<span class="hl opt">-&gt;</span>c_optimize <span class="hl opt">&lt;</span> <span class="hl num">2</span><span class="hl opt">) {</span>
        <span class="hl com">/* don't generate docstrings if -OO */</span>
        i <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> st<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Expr<span class="hl opt">.</span>value<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> __doc__<span class="hl opt">,</span> Store<span class="hl opt">))</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">for</span> <span class="hl opt">(;</span> i <span class="hl opt">&lt;</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>stmts<span class="hl opt">);</span> i<span class="hl opt">++)</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">, (</span>stmt_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>stmts<span class="hl opt">,</span> i<span class="hl opt">));</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static</span> PyCodeObject <span class="hl opt">*</span>
<span class="hl kwd">compiler_mod</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> mod_ty mod<span class="hl opt">)</span>
<span class="hl opt">{</span>
    PyCodeObject <span class="hl opt">*</span>co<span class="hl opt">;</span>
    <span class="hl kwb">int</span> addNone <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwb">static</span> PyObject <span class="hl opt">*</span>module<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>module<span class="hl opt">) {</span>
        module <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_InternFromString</span><span class="hl opt">(</span><span class="hl str">&quot;&lt;module&gt;&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>module<span class="hl opt">)</span>
            <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl com">/* Use 0 for firstlineno initially, will fixup in assemble(). */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_enter_scope</span><span class="hl opt">(</span>c<span class="hl opt">,</span> module<span class="hl opt">,</span> mod<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">))</span>
        <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>mod<span class="hl opt">-&gt;</span>kind<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> Module_kind<span class="hl opt">:</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_body</span><span class="hl opt">(</span>c<span class="hl opt">,</span> mod<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Module<span class="hl opt">.</span>body<span class="hl opt">)) {</span>
            <span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Interactive_kind<span class="hl opt">:</span>
        c<span class="hl opt">-&gt;</span>c_interactive <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwd">VISIT_SEQ_IN_SCOPE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span>
                                mod<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Interactive<span class="hl opt">.</span>body<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Expression_kind<span class="hl opt">:</span>
        <span class="hl kwd">VISIT_IN_SCOPE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> mod<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Expression<span class="hl opt">.</span>body<span class="hl opt">);</span>
        addNone <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Suite_kind<span class="hl opt">:</span>
        <span class="hl kwd">PyErr_SetString</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                        <span class="hl str">&quot;suite should not be possible&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">default</span><span class="hl opt">:</span>
        <span class="hl kwd">PyErr_Format</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                     <span class="hl str">&quot;module kind %d should not be possible&quot;</span><span class="hl opt">,</span>
                     mod<span class="hl opt">-&gt;</span>kind<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    co <span class="hl opt">=</span> <span class="hl kwd">assemble</span><span class="hl opt">(</span>c<span class="hl opt">,</span> addNone<span class="hl opt">);</span>
    <span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">return</span> co<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl com">/* The test for LOCAL must come before the test for FREE in order to</span>
<span class="hl com">   handle classes where name is both local and free.  The local var is</span>
<span class="hl com">   a method and the free var is a free var referenced within a method.</span>
<span class="hl com">*/</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">get_ref_type</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> PyObject <span class="hl opt">*</span>name<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> scope <span class="hl opt">=</span> <span class="hl kwd">PyST_GetScope</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">,</span> name<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>scope <span class="hl opt">==</span> <span class="hl num">0</span><span class="hl opt">) {</span>
        <span class="hl kwb">char</span> buf<span class="hl opt">[</span><span class="hl num">350</span><span class="hl opt">];</span>
        <span class="hl kwd">PyOS_snprintf</span><span class="hl opt">(</span>buf<span class="hl opt">,</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span>buf<span class="hl opt">),</span>
                      <span class="hl str">&quot;unknown scope for %.100s in %.100s(%s) in %s</span><span class="hl esc">\n</span><span class="hl str">&quot;</span>
                      <span class="hl str">&quot;symbols: %s</span><span class="hl esc">\n</span><span class="hl str">locals: %s</span><span class="hl esc">\n</span><span class="hl str">globals: %s&quot;</span><span class="hl opt">,</span>
                      <span class="hl kwd">PyBytes_AS_STRING</span><span class="hl opt">(</span>name<span class="hl opt">),</span>
                      <span class="hl kwd">PyBytes_AS_STRING</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_name<span class="hl opt">),</span>
                      <span class="hl kwd">PyObject_REPR</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">-&gt;</span>ste_id<span class="hl opt">),</span>
                      c<span class="hl opt">-&gt;</span>c_filename<span class="hl opt">,</span>
                      <span class="hl kwd">PyObject_REPR</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">-&gt;</span>ste_symbols<span class="hl opt">),</span>
                      <span class="hl kwd">PyObject_REPR</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_varnames<span class="hl opt">),</span>
                      <span class="hl kwd">PyObject_REPR</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_names<span class="hl opt">)</span>
        <span class="hl opt">);</span>
        <span class="hl kwd">Py_FatalError</span><span class="hl opt">(</span>buf<span class="hl opt">);</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">return</span> scope<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_lookup_arg</span><span class="hl opt">(</span>PyObject <span class="hl opt">*</span>dict<span class="hl opt">,</span> PyObject <span class="hl opt">*</span>name<span class="hl opt">)</span>
<span class="hl opt">{</span>
    PyObject <span class="hl opt">*</span>k<span class="hl opt">, *</span>v<span class="hl opt">;</span>
    k <span class="hl opt">=</span> <span class="hl kwd">PyTuple_Pack</span><span class="hl opt">(</span><span class="hl num">2</span><span class="hl opt">,</span> name<span class="hl opt">,</span> name<span class="hl opt">-&gt;</span>ob_type<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>k <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
    v <span class="hl opt">=</span> <span class="hl kwd">PyDict_GetItem</span><span class="hl opt">(</span>dict<span class="hl opt">,</span> k<span class="hl opt">);</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>k<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>v <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwa">return</span> <span class="hl kwd">PyLong_AS_LONG</span><span class="hl opt">(</span>v<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_make_closure</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> PyCodeObject <span class="hl opt">*</span>co<span class="hl opt">,</span> <span class="hl kwb">int</span> args<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> free <span class="hl opt">=</span> <span class="hl kwd">PyCode_GetNumFree</span><span class="hl opt">(</span>co<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>free <span class="hl opt">==</span> <span class="hl num">0</span><span class="hl opt">) {</span>
        <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">, (</span>PyObject<span class="hl opt">*)</span>co<span class="hl opt">,</span> consts<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> MAKE_FUNCTION<span class="hl opt">,</span> args<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> free<span class="hl opt">; ++</span>i<span class="hl opt">) {</span>
        <span class="hl com">/* Bypass com_addop_varname because it will generate</span>
<span class="hl com">           LOAD_DEREF but LOAD_CLOSURE is needed.</span>
<span class="hl com">        */</span>
        PyObject <span class="hl opt">*</span>name <span class="hl opt">=</span> <span class="hl kwd">PyTuple_GET_ITEM</span><span class="hl opt">(</span>co<span class="hl opt">-&gt;</span>co_freevars<span class="hl opt">,</span> i<span class="hl opt">);</span>
        <span class="hl kwb">int</span> arg<span class="hl opt">,</span> reftype<span class="hl opt">;</span>

        <span class="hl com">/* Special case: If a class contains a method with a</span>
<span class="hl com">           free variable that has the same name as a method,</span>
<span class="hl com">           the name will be considered free *and* local in the</span>
<span class="hl com">           class.  It should be handled by the closure, as</span>
<span class="hl com">           well as by the normal name loookup logic.</span>
<span class="hl com">        */</span>
        reftype <span class="hl opt">=</span> <span class="hl kwd">get_ref_type</span><span class="hl opt">(</span>c<span class="hl opt">,</span> name<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>reftype <span class="hl opt">==</span> CELL<span class="hl opt">)</span>
            arg <span class="hl opt">=</span> <span class="hl kwd">compiler_lookup_arg</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_cellvars<span class="hl opt">,</span> name<span class="hl opt">);</span>
        <span class="hl kwa">else</span> <span class="hl com">/* (reftype == FREE) */</span>
            arg <span class="hl opt">=</span> <span class="hl kwd">compiler_lookup_arg</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_freevars<span class="hl opt">,</span> name<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>arg <span class="hl opt">== -</span><span class="hl num">1</span><span class="hl opt">) {</span>
            <span class="hl kwd">fprintf</span><span class="hl opt">(</span>stderr<span class="hl opt">,</span>
                <span class="hl str">&quot;lookup %s in %s %d %d</span><span class="hl esc">\n</span><span class="hl str">&quot;</span>
                <span class="hl str">&quot;freevars of %s: %s</span><span class="hl esc">\n</span><span class="hl str">&quot;</span><span class="hl opt">,</span>
                <span class="hl kwd">PyObject_REPR</span><span class="hl opt">(</span>name<span class="hl opt">),</span>
                <span class="hl kwd">PyBytes_AS_STRING</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_name<span class="hl opt">),</span>
                reftype<span class="hl opt">,</span> arg<span class="hl opt">,</span>
                <span class="hl kwd">_PyUnicode_AsString</span><span class="hl opt">(</span>co<span class="hl opt">-&gt;</span>co_name<span class="hl opt">),</span>
                <span class="hl kwd">PyObject_REPR</span><span class="hl opt">(</span>co<span class="hl opt">-&gt;</span>co_freevars<span class="hl opt">));</span>
            <span class="hl kwd">Py_FatalError</span><span class="hl opt">(</span><span class="hl str">&quot;compiler_make_closure()&quot;</span><span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CLOSURE<span class="hl opt">,</span> arg<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> BUILD_TUPLE<span class="hl opt">,</span> free<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">, (</span>PyObject<span class="hl opt">*)</span>co<span class="hl opt">,</span> consts<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> MAKE_CLOSURE<span class="hl opt">,</span> args<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_decorators</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> asdl_seq<span class="hl opt">*</span> decos<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> i<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span>decos<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>

    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>decos<span class="hl opt">);</span> i<span class="hl opt">++) {</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">, (</span>expr_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>decos<span class="hl opt">,</span> i<span class="hl opt">));</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_visit_kwonlydefaults</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> asdl_seq <span class="hl opt">*</span>kwonlyargs<span class="hl opt">,</span>
                              asdl_seq <span class="hl opt">*</span>kw_defaults<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> default_count <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>kwonlyargs<span class="hl opt">);</span> i<span class="hl opt">++) {</span>
        arg_ty arg <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>kwonlyargs<span class="hl opt">,</span> i<span class="hl opt">);</span>
        expr_ty default_ <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>kw_defaults<span class="hl opt">,</span> i<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>default_<span class="hl opt">) {</span>
            <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> arg<span class="hl opt">-&gt;</span>arg<span class="hl opt">,</span> consts<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_visit_expr</span><span class="hl opt">(</span>c<span class="hl opt">,</span> default_<span class="hl opt">)) {</span>
                <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
            <span class="hl opt">}</span>
            default_count<span class="hl opt">++;</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> default_count<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_visit_argannotation</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> identifier id<span class="hl opt">,</span>
    expr_ty annotation<span class="hl opt">,</span> PyObject <span class="hl opt">*</span>names<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>annotation<span class="hl opt">) {</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> annotation<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">PyList_Append</span><span class="hl opt">(</span>names<span class="hl opt">,</span> id<span class="hl opt">))</span>
            <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_visit_argannotations</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> asdl_seq<span class="hl opt">*</span> args<span class="hl opt">,</span>
                              PyObject <span class="hl opt">*</span>names<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> error<span class="hl opt">;</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>args<span class="hl opt">);</span> i<span class="hl opt">++) {</span>
        arg_ty arg <span class="hl opt">= (</span>arg_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>args<span class="hl opt">,</span> i<span class="hl opt">);</span>
        error <span class="hl opt">=</span> <span class="hl kwd">compiler_visit_argannotation</span><span class="hl opt">(</span>
                        c<span class="hl opt">,</span>
                        arg<span class="hl opt">-&gt;</span>arg<span class="hl opt">,</span>
                        arg<span class="hl opt">-&gt;</span>annotation<span class="hl opt">,</span>
                        names<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>error<span class="hl opt">)</span>
            <span class="hl kwa">return</span> error<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_visit_annotations</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> arguments_ty args<span class="hl opt">,</span>
                           expr_ty returns<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl com">/* Push arg annotations and a list of the argument names. Return the #</span>
<span class="hl com">       of items pushed. The expressions are evaluated out-of-order wrt the</span>
<span class="hl com">       source code.</span>
<span class="hl com"></span>
<span class="hl com">       More than 2^16-1 annotations is a SyntaxError. Returns -1 on error.</span>
<span class="hl com">       */</span>
    <span class="hl kwb">static</span> identifier return_str<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>names<span class="hl opt">;</span>
    <span class="hl kwb">int</span> len<span class="hl opt">;</span>
    names <span class="hl opt">=</span> <span class="hl kwd">PyList_New</span><span class="hl opt">(</span><span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>names<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">compiler_visit_argannotations</span><span class="hl opt">(</span>c<span class="hl opt">,</span> args<span class="hl opt">-&gt;</span>args<span class="hl opt">,</span> names<span class="hl opt">))</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>args<span class="hl opt">-&gt;</span>varargannotation <span class="hl opt">&amp;&amp;</span>
        <span class="hl kwd">compiler_visit_argannotation</span><span class="hl opt">(</span>c<span class="hl opt">,</span> args<span class="hl opt">-&gt;</span>vararg<span class="hl opt">,</span>
                                     args<span class="hl opt">-&gt;</span>varargannotation<span class="hl opt">,</span> names<span class="hl opt">))</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">compiler_visit_argannotations</span><span class="hl opt">(</span>c<span class="hl opt">,</span> args<span class="hl opt">-&gt;</span>kwonlyargs<span class="hl opt">,</span> names<span class="hl opt">))</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>args<span class="hl opt">-&gt;</span>kwargannotation <span class="hl opt">&amp;&amp;</span>
        <span class="hl kwd">compiler_visit_argannotation</span><span class="hl opt">(</span>c<span class="hl opt">,</span> args<span class="hl opt">-&gt;</span>kwarg<span class="hl opt">,</span>
                                     args<span class="hl opt">-&gt;</span>kwargannotation<span class="hl opt">,</span> names<span class="hl opt">))</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span>return_str<span class="hl opt">) {</span>
        return_str <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_InternFromString</span><span class="hl opt">(</span><span class="hl str">&quot;return&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>return_str<span class="hl opt">)</span>
            <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">compiler_visit_argannotation</span><span class="hl opt">(</span>c<span class="hl opt">,</span> return_str<span class="hl opt">,</span> returns<span class="hl opt">,</span> names<span class="hl opt">)) {</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    <span class="hl opt">}</span>

    len <span class="hl opt">=</span> <span class="hl kwd">PyList_GET_SIZE</span><span class="hl opt">(</span>names<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>len <span class="hl opt">&gt;</span> <span class="hl num">65534</span><span class="hl opt">) {</span>
        <span class="hl com">/* len must fit in 16 bits, and len is incremented below */</span>
        <span class="hl kwd">PyErr_SetString</span><span class="hl opt">(</span>PyExc_SyntaxError<span class="hl opt">,</span>
                        <span class="hl str">&quot;too many annotations&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>len<span class="hl opt">) {</span>
        <span class="hl com">/* convert names to a tuple and place on stack */</span>
        PyObject <span class="hl opt">*</span>elt<span class="hl opt">;</span>
        <span class="hl kwb">int</span> i<span class="hl opt">;</span>
        PyObject <span class="hl opt">*</span>s <span class="hl opt">=</span> <span class="hl kwd">PyTuple_New</span><span class="hl opt">(</span>len<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>s<span class="hl opt">)</span>
            <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
        <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> len<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
            elt <span class="hl opt">=</span> <span class="hl kwd">PyList_GET_ITEM</span><span class="hl opt">(</span>names<span class="hl opt">,</span> i<span class="hl opt">);</span>
            <span class="hl kwd">Py_INCREF</span><span class="hl opt">(</span>elt<span class="hl opt">);</span>
            <span class="hl kwd">PyTuple_SET_ITEM</span><span class="hl opt">(</span>s<span class="hl opt">,</span> i<span class="hl opt">,</span> elt<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> s<span class="hl opt">,</span> consts<span class="hl opt">);</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>s<span class="hl opt">);</span>
        len<span class="hl opt">++;</span> <span class="hl com">/* include the just-pushed tuple */</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>names<span class="hl opt">);</span>
    <span class="hl kwa">return</span> len<span class="hl opt">;</span>

error<span class="hl opt">:</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>names<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_function</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    PyCodeObject <span class="hl opt">*</span>co<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>first_const <span class="hl opt">=</span> Py_None<span class="hl opt">;</span>
    arguments_ty args <span class="hl opt">=</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>FunctionDef<span class="hl opt">.</span>args<span class="hl opt">;</span>
    expr_ty returns <span class="hl opt">=</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>FunctionDef<span class="hl opt">.</span>returns<span class="hl opt">;</span>
    asdl_seq<span class="hl opt">*</span> decos <span class="hl opt">=</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>FunctionDef<span class="hl opt">.</span>decorator_list<span class="hl opt">;</span>
    stmt_ty st<span class="hl opt">;</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> n<span class="hl opt">,</span> docstring<span class="hl opt">,</span> kw_default_count <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">,</span> arglength<span class="hl opt">;</span>
    <span class="hl kwb">int</span> num_annotations<span class="hl opt">;</span>

    <span class="hl kwa">assert</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> FunctionDef_kind<span class="hl opt">);</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_decorators</span><span class="hl opt">(</span>c<span class="hl opt">,</span> decos<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>args<span class="hl opt">-&gt;</span>kwonlyargs<span class="hl opt">) {</span>
        <span class="hl kwb">int</span> res <span class="hl opt">=</span> <span class="hl kwd">compiler_visit_kwonlydefaults</span><span class="hl opt">(</span>c<span class="hl opt">,</span> args<span class="hl opt">-&gt;</span>kwonlyargs<span class="hl opt">,</span>
                                                args<span class="hl opt">-&gt;</span>kw_defaults<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>res <span class="hl opt">&lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        kw_default_count <span class="hl opt">=</span> res<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>args<span class="hl opt">-&gt;</span>defaults<span class="hl opt">)</span>
        <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> args<span class="hl opt">-&gt;</span>defaults<span class="hl opt">);</span>
    num_annotations <span class="hl opt">=</span> <span class="hl kwd">compiler_visit_annotations</span><span class="hl opt">(</span>c<span class="hl opt">,</span> args<span class="hl opt">,</span> returns<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>num_annotations <span class="hl opt">&lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">assert</span><span class="hl opt">((</span>num_annotations <span class="hl opt">&amp;</span> <span class="hl num">0xFFFF</span><span class="hl opt">) ==</span> num_annotations<span class="hl opt">);</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_enter_scope</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>FunctionDef<span class="hl opt">.</span>name<span class="hl opt">, (</span><span class="hl kwb">void</span> <span class="hl opt">*)</span>s<span class="hl opt">,</span>
                              s<span class="hl opt">-&gt;</span>lineno<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    st <span class="hl opt">= (</span>stmt_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>FunctionDef<span class="hl opt">.</span>body<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
    docstring <span class="hl opt">=</span> <span class="hl kwd">compiler_isdocstring</span><span class="hl opt">(</span>st<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>docstring <span class="hl opt">&amp;&amp;</span> c<span class="hl opt">-&gt;</span>c_optimize <span class="hl opt">&lt;</span> <span class="hl num">2</span><span class="hl opt">)</span>
        first_const <span class="hl opt">=</span> st<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Expr<span class="hl opt">.</span>value<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Str<span class="hl opt">.</span>s<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">compiler_add_o</span><span class="hl opt">(</span>c<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_consts<span class="hl opt">,</span> first_const<span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">)      {</span>
        <span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>

    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_argcount <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>args<span class="hl opt">-&gt;</span>args<span class="hl opt">);</span>
    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_kwonlyargcount <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>args<span class="hl opt">-&gt;</span>kwonlyargs<span class="hl opt">);</span>
    n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>FunctionDef<span class="hl opt">.</span>body<span class="hl opt">);</span>
    <span class="hl com">/* if there was a docstring, we need to skip the first statement */</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> docstring<span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
        st <span class="hl opt">= (</span>stmt_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>FunctionDef<span class="hl opt">.</span>body<span class="hl opt">,</span> i<span class="hl opt">);</span>
        <span class="hl kwd">VISIT_IN_SCOPE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> st<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    co <span class="hl opt">=</span> <span class="hl kwd">assemble</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">);</span>
    <span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>co <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    arglength <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>args<span class="hl opt">-&gt;</span>defaults<span class="hl opt">);</span>
    arglength <span class="hl opt">|=</span> kw_default_count <span class="hl opt">&lt;&lt;</span> <span class="hl num">8</span><span class="hl opt">;</span>
    arglength <span class="hl opt">|=</span> num_annotations <span class="hl opt">&lt;&lt;</span> <span class="hl num">16</span><span class="hl opt">;</span>
    <span class="hl kwd">compiler_make_closure</span><span class="hl opt">(</span>c<span class="hl opt">,</span> co<span class="hl opt">,</span> arglength<span class="hl opt">);</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>co<span class="hl opt">);</span>

    <span class="hl com">/* decorators */</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>decos<span class="hl opt">);</span> i<span class="hl opt">++) {</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> CALL_FUNCTION<span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">);</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">return</span> <span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>FunctionDef<span class="hl opt">.</span>name<span class="hl opt">,</span> Store<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_class</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    PyCodeObject <span class="hl opt">*</span>co<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>str<span class="hl opt">;</span>
    <span class="hl kwb">int</span> i<span class="hl opt">;</span>
    asdl_seq<span class="hl opt">*</span> decos <span class="hl opt">=</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ClassDef<span class="hl opt">.</span>decorator_list<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_decorators</span><span class="hl opt">(</span>c<span class="hl opt">,</span> decos<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl com">/* ultimately generate code for:</span>
<span class="hl com">         &lt;name&gt; = __build_class__(&lt;func&gt;, &lt;name&gt;, *&lt;bases&gt;, **&lt;keywords&gt;)</span>
<span class="hl com">       where:</span>
<span class="hl com">         &lt;func&gt; is a function/closure created from the class body;</span>
<span class="hl com">            it has a single argument (__locals__) where the dict</span>
<span class="hl com">            (or MutableSequence) representing the locals is passed</span>
<span class="hl com">         &lt;name&gt; is the class name</span>
<span class="hl com">         &lt;bases&gt; is the positional arguments and *varargs argument</span>
<span class="hl com">         &lt;keywords&gt; is the keyword arguments and **kwds argument</span>
<span class="hl com">       This borrows from compiler_call.</span>
<span class="hl com">    */</span>

    <span class="hl com">/* 1. compile the class body into a code object */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_enter_scope</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ClassDef<span class="hl opt">.</span>name<span class="hl opt">, (</span><span class="hl kwb">void</span> <span class="hl opt">*)</span>s<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>lineno<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl com">/* this block represents what we do in the new scope */</span>
    <span class="hl opt">{</span>
        <span class="hl com">/* use the class name for name mangling */</span>
        <span class="hl kwd">Py_INCREF</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ClassDef<span class="hl opt">.</span>name<span class="hl opt">);</span>
        <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_private<span class="hl opt">);</span>
        c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_private <span class="hl opt">=</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ClassDef<span class="hl opt">.</span>name<span class="hl opt">;</span>
        <span class="hl com">/* force it to have one mandatory argument */</span>
        c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_argcount <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl com">/* load the first argument (__locals__) ... */</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_FAST<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
        <span class="hl com">/* ... and store it into f_locals */</span>
        <span class="hl kwd">ADDOP_IN_SCOPE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> STORE_LOCALS<span class="hl opt">);</span>
        <span class="hl com">/* load (global) __name__ ... */</span>
        str <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_InternFromString</span><span class="hl opt">(</span><span class="hl str">&quot;__name__&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>str <span class="hl opt">|| !</span><span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> str<span class="hl opt">,</span> Load<span class="hl opt">)) {</span>
            <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>str<span class="hl opt">);</span>
            <span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>str<span class="hl opt">);</span>
        <span class="hl com">/* ... and store it as __module__ */</span>
        str <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_InternFromString</span><span class="hl opt">(</span><span class="hl str">&quot;__module__&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>str <span class="hl opt">|| !</span><span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> str<span class="hl opt">,</span> Store<span class="hl opt">)) {</span>
            <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>str<span class="hl opt">);</span>
            <span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>str<span class="hl opt">);</span>
        <span class="hl com">/* compile the body proper */</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_body</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ClassDef<span class="hl opt">.</span>body<span class="hl opt">)) {</span>
            <span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl com">/* return the (empty) __class__ cell */</span>
        str <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_InternFromString</span><span class="hl opt">(</span><span class="hl str">&quot;&#64;__class__&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>str <span class="hl opt">==</span> NULL<span class="hl opt">) {</span>
            <span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        i <span class="hl opt">=</span> <span class="hl kwd">compiler_lookup_arg</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_cellvars<span class="hl opt">,</span> str<span class="hl opt">);</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>str<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>i <span class="hl opt">== -</span><span class="hl num">1</span><span class="hl opt">) {</span>
            <span class="hl com">/* This happens when nobody references the cell */</span>
            <span class="hl kwd">PyErr_Clear</span><span class="hl opt">();</span>
            <span class="hl com">/* Return None */</span>
            <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> consts<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">else</span> <span class="hl opt">{</span>
            <span class="hl com">/* Return the cell where to store __class__ */</span>
            <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CLOSURE<span class="hl opt">,</span> i<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">ADDOP_IN_SCOPE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> RETURN_VALUE<span class="hl opt">);</span>
        <span class="hl com">/* create the code object */</span>
        co <span class="hl opt">=</span> <span class="hl kwd">assemble</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl com">/* leave the new scope */</span>
    <span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>co <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl com">/* 2. load the 'build_class' function */</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_BUILD_CLASS<span class="hl opt">);</span>

    <span class="hl com">/* 3. load a function (or closure) made from the code object */</span>
    <span class="hl kwd">compiler_make_closure</span><span class="hl opt">(</span>c<span class="hl opt">,</span> co<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>co<span class="hl opt">);</span>

    <span class="hl com">/* 4. load class name */</span>
    <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ClassDef<span class="hl opt">.</span>name<span class="hl opt">,</span> consts<span class="hl opt">);</span>

    <span class="hl com">/* 5. generate the rest of the code for the call */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_call_helper</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl num">2</span><span class="hl opt">,</span>
                              s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ClassDef<span class="hl opt">.</span>bases<span class="hl opt">,</span>
                              s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ClassDef<span class="hl opt">.</span>keywords<span class="hl opt">,</span>
                              s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ClassDef<span class="hl opt">.</span>starargs<span class="hl opt">,</span>
                              s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ClassDef<span class="hl opt">.</span>kwargs<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl com">/* 6. apply decorators */</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>decos<span class="hl opt">);</span> i<span class="hl opt">++) {</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> CALL_FUNCTION<span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">);</span>
    <span class="hl opt">}</span>

    <span class="hl com">/* 7. store into &lt;name&gt; */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ClassDef<span class="hl opt">.</span>name<span class="hl opt">,</span> Store<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_ifexp</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>end<span class="hl opt">, *</span>next<span class="hl opt">;</span>

    <span class="hl kwa">assert</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> IfExp_kind<span class="hl opt">);</span>
    end <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>end <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    next <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>next <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>IfExp<span class="hl opt">.</span>test<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_JUMP_IF_FALSE<span class="hl opt">,</span> next<span class="hl opt">);</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>IfExp<span class="hl opt">.</span>body<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> JUMP_FORWARD<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> next<span class="hl opt">);</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>IfExp<span class="hl opt">.</span>orelse<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_lambda</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    PyCodeObject <span class="hl opt">*</span>co<span class="hl opt">;</span>
    <span class="hl kwb">static</span> identifier name<span class="hl opt">;</span>
    <span class="hl kwb">int</span> kw_default_count <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">,</span> arglength<span class="hl opt">;</span>
    arguments_ty args <span class="hl opt">=</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Lambda<span class="hl opt">.</span>args<span class="hl opt">;</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> Lambda_kind<span class="hl opt">);</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span>name<span class="hl opt">) {</span>
        name <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_InternFromString</span><span class="hl opt">(</span><span class="hl str">&quot;&lt;lambda&gt;&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>name<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>args<span class="hl opt">-&gt;</span>kwonlyargs<span class="hl opt">) {</span>
        <span class="hl kwb">int</span> res <span class="hl opt">=</span> <span class="hl kwd">compiler_visit_kwonlydefaults</span><span class="hl opt">(</span>c<span class="hl opt">,</span> args<span class="hl opt">-&gt;</span>kwonlyargs<span class="hl opt">,</span>
                                                args<span class="hl opt">-&gt;</span>kw_defaults<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>res <span class="hl opt">&lt;</span> <span class="hl num">0</span><span class="hl opt">)</span> <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        kw_default_count <span class="hl opt">=</span> res<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>args<span class="hl opt">-&gt;</span>defaults<span class="hl opt">)</span>
        <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> args<span class="hl opt">-&gt;</span>defaults<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_enter_scope</span><span class="hl opt">(</span>c<span class="hl opt">,</span> name<span class="hl opt">, (</span><span class="hl kwb">void</span> <span class="hl opt">*)</span>e<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>lineno<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl com">/* Make None the first constant, so the lambda can't have a</span>
<span class="hl com">       docstring. */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">compiler_add_o</span><span class="hl opt">(</span>c<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_consts<span class="hl opt">,</span> Py_None<span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_argcount <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>args<span class="hl opt">-&gt;</span>args<span class="hl opt">);</span>
    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_kwonlyargcount <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>args<span class="hl opt">-&gt;</span>kwonlyargs<span class="hl opt">);</span>
    <span class="hl kwd">VISIT_IN_SCOPE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Lambda<span class="hl opt">.</span>body<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">-&gt;</span>ste_generator<span class="hl opt">) {</span>
        <span class="hl kwd">ADDOP_IN_SCOPE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_TOP<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else</span> <span class="hl opt">{</span>
        <span class="hl kwd">ADDOP_IN_SCOPE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> RETURN_VALUE<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    co <span class="hl opt">=</span> <span class="hl kwd">assemble</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">);</span>
    <span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>co <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    arglength <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>args<span class="hl opt">-&gt;</span>defaults<span class="hl opt">);</span>
    arglength <span class="hl opt">|=</span> kw_default_count <span class="hl opt">&lt;&lt;</span> <span class="hl num">8</span><span class="hl opt">;</span>
    <span class="hl kwd">compiler_make_closure</span><span class="hl opt">(</span>c<span class="hl opt">,</span> co<span class="hl opt">,</span> arglength<span class="hl opt">);</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>co<span class="hl opt">);</span>

    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_if</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>end<span class="hl opt">, *</span>next<span class="hl opt">;</span>
    <span class="hl kwb">int</span> constant<span class="hl opt">;</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> If_kind<span class="hl opt">);</span>
    end <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>end <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    constant <span class="hl opt">=</span> <span class="hl kwd">expr_constant</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>If<span class="hl opt">.</span>test<span class="hl opt">);</span>
    <span class="hl com">/* constant = 0: &quot;if 0&quot;</span>
<span class="hl com">     * constant = 1: &quot;if 1&quot;, &quot;if 2&quot;, ...</span>
<span class="hl com">     * constant = -1: rest */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>constant <span class="hl opt">==</span> <span class="hl num">0</span><span class="hl opt">) {</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>If<span class="hl opt">.</span>orelse<span class="hl opt">)</span>
            <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>If<span class="hl opt">.</span>orelse<span class="hl opt">);</span>
    <span class="hl opt">}</span> <span class="hl kwa">else if</span> <span class="hl opt">(</span>constant <span class="hl opt">==</span> <span class="hl num">1</span><span class="hl opt">) {</span>
        <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>If<span class="hl opt">.</span>body<span class="hl opt">);</span>
    <span class="hl opt">}</span> <span class="hl kwa">else</span> <span class="hl opt">{</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>If<span class="hl opt">.</span>orelse<span class="hl opt">) {</span>
            next <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span>next <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
                <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">else</span>
            next <span class="hl opt">=</span> end<span class="hl opt">;</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>If<span class="hl opt">.</span>test<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_JUMP_IF_FALSE<span class="hl opt">,</span> next<span class="hl opt">);</span>
        <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>If<span class="hl opt">.</span>body<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> JUMP_FORWARD<span class="hl opt">,</span> end<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>If<span class="hl opt">.</span>orelse<span class="hl opt">) {</span>
            <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> next<span class="hl opt">);</span>
            <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>If<span class="hl opt">.</span>orelse<span class="hl opt">);</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_for</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>start<span class="hl opt">, *</span>cleanup<span class="hl opt">, *</span>end<span class="hl opt">;</span>

    start <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    cleanup <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    end <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>start <span class="hl opt">==</span> NULL <span class="hl opt">||</span> end <span class="hl opt">==</span> NULL <span class="hl opt">||</span> cleanup <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> SETUP_LOOP<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_push_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOOP<span class="hl opt">,</span> start<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>For<span class="hl opt">.</span>iter<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> GET_ITER<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> start<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FOR_ITER<span class="hl opt">,</span> cleanup<span class="hl opt">);</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>For<span class="hl opt">.</span>target<span class="hl opt">);</span>
    <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>For<span class="hl opt">.</span>body<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> JUMP_ABSOLUTE<span class="hl opt">,</span> start<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> cleanup<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_BLOCK<span class="hl opt">);</span>
    <span class="hl kwd">compiler_pop_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOOP<span class="hl opt">,</span> start<span class="hl opt">);</span>
    <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>For<span class="hl opt">.</span>orelse<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_while</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>loop<span class="hl opt">, *</span>orelse<span class="hl opt">, *</span>end<span class="hl opt">, *</span>anchor <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    <span class="hl kwb">int</span> constant <span class="hl opt">=</span> <span class="hl kwd">expr_constant</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>While<span class="hl opt">.</span>test<span class="hl opt">);</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>constant <span class="hl opt">==</span> <span class="hl num">0</span><span class="hl opt">) {</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>While<span class="hl opt">.</span>orelse<span class="hl opt">)</span>
            <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>While<span class="hl opt">.</span>orelse<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    loop <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    end <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>constant <span class="hl opt">== -</span><span class="hl num">1</span><span class="hl opt">) {</span>
        anchor <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>anchor <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>loop <span class="hl opt">==</span> NULL <span class="hl opt">||</span> end <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>While<span class="hl opt">.</span>orelse<span class="hl opt">) {</span>
        orelse <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>orelse <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else</span>
        orelse <span class="hl opt">=</span> NULL<span class="hl opt">;</span>

    <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> SETUP_LOOP<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> loop<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_push_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOOP<span class="hl opt">,</span> loop<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>constant <span class="hl opt">== -</span><span class="hl num">1</span><span class="hl opt">) {</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>While<span class="hl opt">.</span>test<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_JUMP_IF_FALSE<span class="hl opt">,</span> anchor<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>While<span class="hl opt">.</span>body<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> JUMP_ABSOLUTE<span class="hl opt">,</span> loop<span class="hl opt">);</span>

    <span class="hl com">/* XXX should the two POP instructions be in a separate block</span>
<span class="hl com">       if there is no else clause ?</span>
<span class="hl com">    */</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>constant <span class="hl opt">== -</span><span class="hl num">1</span><span class="hl opt">) {</span>
        <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> anchor<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_BLOCK<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">compiler_pop_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOOP<span class="hl opt">,</span> loop<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>orelse <span class="hl opt">!=</span> NULL<span class="hl opt">)</span> <span class="hl com">/* what if orelse is just pass? */</span>
        <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>While<span class="hl opt">.</span>orelse<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> end<span class="hl opt">);</span>

    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_continue</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">static const char</span> LOOP_ERROR_MSG<span class="hl opt">[] =</span> <span class="hl str">&quot;'continue' not properly in loop&quot;</span><span class="hl opt">;</span>
    <span class="hl kwb">static const char</span> IN_FINALLY_ERROR_MSG<span class="hl opt">[] =</span>
                    <span class="hl str">&quot;'continue' not supported inside 'finally' clause&quot;</span><span class="hl opt">;</span>
    <span class="hl kwb">int</span> i<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_nfblocks<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOOP_ERROR_MSG<span class="hl opt">);</span>
    i <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_nfblocks <span class="hl opt">-</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_fblock<span class="hl opt">[</span>i<span class="hl opt">].</span>fb_type<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> LOOP<span class="hl opt">:</span>
        <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> JUMP_ABSOLUTE<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_fblock<span class="hl opt">[</span>i<span class="hl opt">].</span>fb_block<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> EXCEPT<span class="hl opt">:</span>
    <span class="hl kwa">case</span> FINALLY_TRY<span class="hl opt">:</span>
        <span class="hl kwa">while</span> <span class="hl opt">(--</span>i <span class="hl opt">&gt;=</span> <span class="hl num">0</span> <span class="hl opt">&amp;&amp;</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_fblock<span class="hl opt">[</span>i<span class="hl opt">].</span>fb_type <span class="hl opt">!=</span> LOOP<span class="hl opt">) {</span>
            <span class="hl com">/* Prevent continue anywhere under a finally</span>
<span class="hl com">                  even if hidden in a sub-try or except. */</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_fblock<span class="hl opt">[</span>i<span class="hl opt">].</span>fb_type <span class="hl opt">==</span> FINALLY_END<span class="hl opt">)</span>
                <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span> IN_FINALLY_ERROR_MSG<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>i <span class="hl opt">== -</span><span class="hl num">1</span><span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOOP_ERROR_MSG<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> CONTINUE_LOOP<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_fblock<span class="hl opt">[</span>i<span class="hl opt">].</span>fb_block<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> FINALLY_END<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span> IN_FINALLY_ERROR_MSG<span class="hl opt">);</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl com">/* Code generated for &quot;try: &lt;body&gt; finally: &lt;finalbody&gt;&quot; is as follows:</span>
<span class="hl com"></span>
<span class="hl com">        SETUP_FINALLY           L</span>
<span class="hl com">        &lt;code for body&gt;</span>
<span class="hl com">        POP_BLOCK</span>
<span class="hl com">        LOAD_CONST              &lt;None&gt;</span>
<span class="hl com">    L:          &lt;code for finalbody&gt;</span>
<span class="hl com">        END_FINALLY</span>
<span class="hl com"></span>
<span class="hl com">   The special instructions use the block stack.  Each block</span>
<span class="hl com">   stack entry contains the instruction that created it (here</span>
<span class="hl com">   SETUP_FINALLY), the level of the value stack at the time the</span>
<span class="hl com">   block stack entry was created, and a label (here L).</span>
<span class="hl com"></span>
<span class="hl com">   SETUP_FINALLY:</span>
<span class="hl com">    Pushes the current value stack level and the label</span>
<span class="hl com">    onto the block stack.</span>
<span class="hl com">   POP_BLOCK:</span>
<span class="hl com">    Pops en entry from the block stack, and pops the value</span>
<span class="hl com">    stack until its level is the same as indicated on the</span>
<span class="hl com">    block stack.  (The label is ignored.)</span>
<span class="hl com">   END_FINALLY:</span>
<span class="hl com">    Pops a variable number of entries from the *value* stack</span>
<span class="hl com">    and re-raises the exception they specify.  The number of</span>
<span class="hl com">    entries popped depends on the (pseudo) exception type.</span>
<span class="hl com"></span>
<span class="hl com">   The block stack is unwound when an exception is raised:</span>
<span class="hl com">   when a SETUP_FINALLY entry is found, the exception is pushed</span>
<span class="hl com">   onto the value stack (and the exception condition is cleared),</span>
<span class="hl com">   and the interpreter jumps to the label gotten from the block</span>
<span class="hl com">   stack.</span>
<span class="hl com">*/</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_try_finally</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>body<span class="hl opt">, *</span>end<span class="hl opt">;</span>
    body <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    end <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>body <span class="hl opt">==</span> NULL <span class="hl opt">||</span> end <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> SETUP_FINALLY<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> body<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_push_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_TRY<span class="hl opt">,</span> body<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Try<span class="hl opt">.</span>handlers <span class="hl opt">&amp;&amp;</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Try<span class="hl opt">.</span>handlers<span class="hl opt">)) {</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_try_except</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">))</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else</span> <span class="hl opt">{</span>
        <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Try<span class="hl opt">.</span>body<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_BLOCK<span class="hl opt">);</span>
    <span class="hl kwd">compiler_pop_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_TRY<span class="hl opt">,</span> body<span class="hl opt">);</span>

    <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> consts<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_push_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_END<span class="hl opt">,</span> end<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Try<span class="hl opt">.</span>finalbody<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> END_FINALLY<span class="hl opt">);</span>
    <span class="hl kwd">compiler_pop_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_END<span class="hl opt">,</span> end<span class="hl opt">);</span>

    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl com">/*</span>
<span class="hl com">   Code generated for &quot;try: S except E1 as V1: S1 except E2 as V2: S2 ...&quot;:</span>
<span class="hl com">   (The contents of the value stack is shown in [], with the top</span>
<span class="hl com">   at the right; 'tb' is trace-back info, 'val' the exception's</span>
<span class="hl com">   associated value, and 'exc' the exception.)</span>
<span class="hl com"></span>
<span class="hl com">   Value stack          Label   Instruction     Argument</span>
<span class="hl com">   []                           SETUP_EXCEPT    L1</span>
<span class="hl com">   []                           &lt;code for S&gt;</span>
<span class="hl com">   []                           POP_BLOCK</span>
<span class="hl com">   []                           JUMP_FORWARD    L0</span>
<span class="hl com"></span>
<span class="hl com">   [tb, val, exc]       L1:     DUP                             )</span>
<span class="hl com">   [tb, val, exc, exc]          &lt;evaluate E1&gt;                   )</span>
<span class="hl com">   [tb, val, exc, exc, E1]      COMPARE_OP      EXC_MATCH       ) only if E1</span>
<span class="hl com">   [tb, val, exc, 1-or-0]       POP_JUMP_IF_FALSE       L2      )</span>
<span class="hl com">   [tb, val, exc]               POP</span>
<span class="hl com">   [tb, val]                    &lt;assign to V1&gt;  (or POP if no V1)</span>
<span class="hl com">   [tb]                         POP</span>
<span class="hl com">   []                           &lt;code for S1&gt;</span>
<span class="hl com">                                JUMP_FORWARD    L0</span>
<span class="hl com"></span>
<span class="hl com">   [tb, val, exc]       L2:     DUP</span>
<span class="hl com">   .............................etc.......................</span>
<span class="hl com"></span>
<span class="hl com">   [tb, val, exc]       Ln+1:   END_FINALLY     # re-raise exception</span>
<span class="hl com"></span>
<span class="hl com">   []                   L0:     &lt;next statement&gt;</span>
<span class="hl com"></span>
<span class="hl com">   Of course, parts are not generated if Vi or Ei is not present.</span>
<span class="hl com">*/</span>
<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_try_except</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>body<span class="hl opt">, *</span>orelse<span class="hl opt">, *</span>except<span class="hl opt">, *</span>end<span class="hl opt">;</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> n<span class="hl opt">;</span>

    body <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    except <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    orelse <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    end <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>body <span class="hl opt">==</span> NULL <span class="hl opt">||</span> except <span class="hl opt">==</span> NULL <span class="hl opt">||</span> orelse <span class="hl opt">==</span> NULL <span class="hl opt">||</span> end <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> SETUP_EXCEPT<span class="hl opt">,</span> except<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> body<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_push_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> EXCEPT<span class="hl opt">,</span> body<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Try<span class="hl opt">.</span>body<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_BLOCK<span class="hl opt">);</span>
    <span class="hl kwd">compiler_pop_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> EXCEPT<span class="hl opt">,</span> body<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> JUMP_FORWARD<span class="hl opt">,</span> orelse<span class="hl opt">);</span>
    n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Try<span class="hl opt">.</span>handlers<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> except<span class="hl opt">);</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
        excepthandler_ty handler <span class="hl opt">= (</span>excepthandler_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>
            s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Try<span class="hl opt">.</span>handlers<span class="hl opt">,</span> i<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>handler<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ExceptHandler<span class="hl opt">.</span>type <span class="hl opt">&amp;&amp;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl str">&quot;default 'except:' must be last&quot;</span><span class="hl opt">);</span>
        c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno_set <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
        c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno <span class="hl opt">=</span> handler<span class="hl opt">-&gt;</span>lineno<span class="hl opt">;</span>
        c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_col_offset <span class="hl opt">=</span> handler<span class="hl opt">-&gt;</span>col_offset<span class="hl opt">;</span>
        except <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>except <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>handler<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ExceptHandler<span class="hl opt">.</span>type<span class="hl opt">) {</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> DUP_TOP<span class="hl opt">);</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> handler<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ExceptHandler<span class="hl opt">.</span>type<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> COMPARE_OP<span class="hl opt">,</span> PyCmp_EXC_MATCH<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_JUMP_IF_FALSE<span class="hl opt">,</span> except<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_TOP<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>handler<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ExceptHandler<span class="hl opt">.</span>name<span class="hl opt">) {</span>
            basicblock <span class="hl opt">*</span>cleanup_end<span class="hl opt">, *</span>cleanup_body<span class="hl opt">;</span>

            cleanup_end <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
            cleanup_body <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(!(</span>cleanup_end <span class="hl opt">||</span> cleanup_body<span class="hl opt">))</span>
                <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

            <span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> handler<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ExceptHandler<span class="hl opt">.</span>name<span class="hl opt">,</span> Store<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_TOP<span class="hl opt">);</span>

            <span class="hl com">/*</span>
<span class="hl com">              try:</span>
<span class="hl com">              # body</span>
<span class="hl com">              except type as name:</span>
<span class="hl com">              try:</span>
<span class="hl com">              # body</span>
<span class="hl com">              finally:</span>
<span class="hl com">              name = None</span>
<span class="hl com">              del name</span>
<span class="hl com">            */</span>

            <span class="hl com">/* second try: */</span>
            <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> SETUP_FINALLY<span class="hl opt">,</span> cleanup_end<span class="hl opt">);</span>
            <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> cleanup_body<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_push_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_TRY<span class="hl opt">,</span> cleanup_body<span class="hl opt">))</span>
                <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

            <span class="hl com">/* second # body */</span>
            <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> handler<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ExceptHandler<span class="hl opt">.</span>body<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_BLOCK<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_EXCEPT<span class="hl opt">);</span>
            <span class="hl kwd">compiler_pop_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_TRY<span class="hl opt">,</span> cleanup_body<span class="hl opt">);</span>

            <span class="hl com">/* finally: */</span>
            <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> consts<span class="hl opt">);</span>
            <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> cleanup_end<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_push_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_END<span class="hl opt">,</span> cleanup_end<span class="hl opt">))</span>
                <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

            <span class="hl com">/* name = None */</span>
            <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> consts<span class="hl opt">);</span>
            <span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> handler<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ExceptHandler<span class="hl opt">.</span>name<span class="hl opt">,</span> Store<span class="hl opt">);</span>

            <span class="hl com">/* del name */</span>
            <span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> handler<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ExceptHandler<span class="hl opt">.</span>name<span class="hl opt">,</span> Del<span class="hl opt">);</span>

            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> END_FINALLY<span class="hl opt">);</span>
            <span class="hl kwd">compiler_pop_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_END<span class="hl opt">,</span> cleanup_end<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">else</span> <span class="hl opt">{</span>
            basicblock <span class="hl opt">*</span>cleanup_body<span class="hl opt">;</span>

            cleanup_body <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(!</span>cleanup_body<span class="hl opt">)</span>
                <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_TOP<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_TOP<span class="hl opt">);</span>
            <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> cleanup_body<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_push_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_TRY<span class="hl opt">,</span> cleanup_body<span class="hl opt">))</span>
                <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
            <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> handler<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ExceptHandler<span class="hl opt">.</span>body<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_EXCEPT<span class="hl opt">);</span>
            <span class="hl kwd">compiler_pop_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_TRY<span class="hl opt">,</span> cleanup_body<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> JUMP_FORWARD<span class="hl opt">,</span> end<span class="hl opt">);</span>
        <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> except<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> END_FINALLY<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> orelse<span class="hl opt">);</span>
    <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Try<span class="hl opt">.</span>orelse<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_try</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">) {</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Try<span class="hl opt">.</span>finalbody <span class="hl opt">&amp;&amp;</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Try<span class="hl opt">.</span>finalbody<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_try_finally</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">);</span>
    <span class="hl kwa">else</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_try_except</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">);</span>
<span class="hl opt">}</span>


<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_import_as</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> identifier name<span class="hl opt">,</span> identifier asname<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl com">/* The IMPORT_NAME opcode was already generated.  This function</span>
<span class="hl com">       merely needs to bind the result to a name.</span>
<span class="hl com"></span>
<span class="hl com">       If there is a dot in name, we need to split it and emit a</span>
<span class="hl com">       LOAD_ATTR for each name.</span>
<span class="hl com">    */</span>
    <span class="hl kwb">const</span> Py_UNICODE <span class="hl opt">*</span>src <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_AS_UNICODE</span><span class="hl opt">(</span>name<span class="hl opt">);</span>
    <span class="hl kwb">const</span> Py_UNICODE <span class="hl opt">*</span>dot <span class="hl opt">=</span> <span class="hl kwd">Py_UNICODE_strchr</span><span class="hl opt">(</span>src<span class="hl opt">,</span> <span class="hl str">'.'</span><span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>dot<span class="hl opt">) {</span>
        <span class="hl com">/* Consume the base module name to get the first attribute */</span>
        src <span class="hl opt">=</span> dot <span class="hl opt">+</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">while</span> <span class="hl opt">(</span>dot<span class="hl opt">) {</span>
            <span class="hl com">/* NB src is only defined when dot != NULL */</span>
            PyObject <span class="hl opt">*</span>attr<span class="hl opt">;</span>
            dot <span class="hl opt">=</span> <span class="hl kwd">Py_UNICODE_strchr</span><span class="hl opt">(</span>src<span class="hl opt">,</span> <span class="hl str">'.'</span><span class="hl opt">);</span>
            attr <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_FromUnicode</span><span class="hl opt">(</span>src<span class="hl opt">,</span>
                                dot ? dot <span class="hl opt">-</span> src <span class="hl opt">:</span> <span class="hl kwd">Py_UNICODE_strlen</span><span class="hl opt">(</span>src<span class="hl opt">));</span>
            <span class="hl kwa">if</span> <span class="hl opt">(!</span>attr<span class="hl opt">)</span>
                <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
            <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_ATTR<span class="hl opt">,</span> attr<span class="hl opt">,</span> names<span class="hl opt">);</span>
            <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>attr<span class="hl opt">);</span>
            src <span class="hl opt">=</span> dot <span class="hl opt">+</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> asname<span class="hl opt">,</span> Store<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_import</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl com">/* The Import node stores a module name like a.b.c as a single</span>
<span class="hl com">       string.  This is convenient for all cases except</span>
<span class="hl com">         import a.b.c as d</span>
<span class="hl com">       where we need to parse that string to extract the individual</span>
<span class="hl com">       module names.</span>
<span class="hl com">       XXX Perhaps change the representation to make this case simpler?</span>
<span class="hl com">     */</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Import<span class="hl opt">.</span>names<span class="hl opt">);</span>

    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
        alias_ty alias <span class="hl opt">= (</span>alias_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Import<span class="hl opt">.</span>names<span class="hl opt">,</span> i<span class="hl opt">);</span>
        <span class="hl kwb">int</span> r<span class="hl opt">;</span>
        PyObject <span class="hl opt">*</span>level<span class="hl opt">;</span>

        level <span class="hl opt">=</span> <span class="hl kwd">PyLong_FromLong</span><span class="hl opt">(</span><span class="hl num">0</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>level <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

        <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> level<span class="hl opt">,</span> consts<span class="hl opt">);</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>level<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> consts<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP_NAME</span><span class="hl opt">(</span>c<span class="hl opt">,</span> IMPORT_NAME<span class="hl opt">,</span> alias<span class="hl opt">-&gt;</span>name<span class="hl opt">,</span> names<span class="hl opt">);</span>

        <span class="hl kwa">if</span> <span class="hl opt">(</span>alias<span class="hl opt">-&gt;</span>asname<span class="hl opt">) {</span>
            r <span class="hl opt">=</span> <span class="hl kwd">compiler_import_as</span><span class="hl opt">(</span>c<span class="hl opt">,</span> alias<span class="hl opt">-&gt;</span>name<span class="hl opt">,</span> alias<span class="hl opt">-&gt;</span>asname<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(!</span>r<span class="hl opt">)</span>
                <span class="hl kwa">return</span> r<span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">else</span> <span class="hl opt">{</span>
            identifier tmp <span class="hl opt">=</span> alias<span class="hl opt">-&gt;</span>name<span class="hl opt">;</span>
            <span class="hl kwb">const</span> Py_UNICODE <span class="hl opt">*</span>base <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_AS_UNICODE</span><span class="hl opt">(</span>alias<span class="hl opt">-&gt;</span>name<span class="hl opt">);</span>
            Py_UNICODE <span class="hl opt">*</span>dot <span class="hl opt">=</span> <span class="hl kwd">Py_UNICODE_strchr</span><span class="hl opt">(</span>base<span class="hl opt">,</span> <span class="hl str">'.'</span><span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span>dot<span class="hl opt">)</span>
                tmp <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_FromUnicode</span><span class="hl opt">(</span>base<span class="hl opt">,</span>
                                            dot <span class="hl opt">-</span> base<span class="hl opt">);</span>
            r <span class="hl opt">=</span> <span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> tmp<span class="hl opt">,</span> Store<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span>dot<span class="hl opt">) {</span>
                <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>tmp<span class="hl opt">);</span>
            <span class="hl opt">}</span>
            <span class="hl kwa">if</span> <span class="hl opt">(!</span>r<span class="hl opt">)</span>
                <span class="hl kwa">return</span> r<span class="hl opt">;</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_from_import</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ImportFrom<span class="hl opt">.</span>names<span class="hl opt">);</span>

    PyObject <span class="hl opt">*</span>names <span class="hl opt">=</span> <span class="hl kwd">PyTuple_New</span><span class="hl opt">(</span>n<span class="hl opt">);</span>
    PyObject <span class="hl opt">*</span>level<span class="hl opt">;</span>
    <span class="hl kwb">static</span> PyObject <span class="hl opt">*</span>empty_string<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span>empty_string<span class="hl opt">) {</span>
        empty_string <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_FromString</span><span class="hl opt">(</span><span class="hl str">&quot;&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>empty_string<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span>names<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    level <span class="hl opt">=</span> <span class="hl kwd">PyLong_FromLong</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ImportFrom<span class="hl opt">.</span>level<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>level<span class="hl opt">) {</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>names<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>

    <span class="hl com">/* build up the names */</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
        alias_ty alias <span class="hl opt">= (</span>alias_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ImportFrom<span class="hl opt">.</span>names<span class="hl opt">,</span> i<span class="hl opt">);</span>
        <span class="hl kwd">Py_INCREF</span><span class="hl opt">(</span>alias<span class="hl opt">-&gt;</span>name<span class="hl opt">);</span>
        <span class="hl kwd">PyTuple_SET_ITEM</span><span class="hl opt">(</span>names<span class="hl opt">,</span> i<span class="hl opt">,</span> alias<span class="hl opt">-&gt;</span>name<span class="hl opt">);</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>lineno <span class="hl opt">&gt;</span> c<span class="hl opt">-&gt;</span>c_future<span class="hl opt">-&gt;</span>ff_lineno <span class="hl opt">&amp;&amp;</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ImportFrom<span class="hl opt">.</span>module <span class="hl opt">&amp;&amp;</span>
        <span class="hl opt">!</span><span class="hl kwd">PyUnicode_CompareWithASCIIString</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ImportFrom<span class="hl opt">.</span>module<span class="hl opt">,</span> <span class="hl str">&quot;__future__&quot;</span><span class="hl opt">)) {</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>level<span class="hl opt">);</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>names<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl str">&quot;from __future__ imports must occur &quot;</span>
                              <span class="hl str">&quot;at the beginning of the file&quot;</span><span class="hl opt">);</span>
    <span class="hl opt">}</span>

    <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> level<span class="hl opt">,</span> consts<span class="hl opt">);</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>level<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> names<span class="hl opt">,</span> consts<span class="hl opt">);</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>names<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ImportFrom<span class="hl opt">.</span>module<span class="hl opt">) {</span>
        <span class="hl kwd">ADDOP_NAME</span><span class="hl opt">(</span>c<span class="hl opt">,</span> IMPORT_NAME<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ImportFrom<span class="hl opt">.</span>module<span class="hl opt">,</span> names<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else</span> <span class="hl opt">{</span>
        <span class="hl kwd">ADDOP_NAME</span><span class="hl opt">(</span>c<span class="hl opt">,</span> IMPORT_NAME<span class="hl opt">,</span> empty_string<span class="hl opt">,</span> names<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
        alias_ty alias <span class="hl opt">= (</span>alias_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ImportFrom<span class="hl opt">.</span>names<span class="hl opt">,</span> i<span class="hl opt">);</span>
        identifier store_name<span class="hl opt">;</span>

        <span class="hl kwa">if</span> <span class="hl opt">(</span>i <span class="hl opt">==</span> <span class="hl num">0</span> <span class="hl opt">&amp;&amp; *</span><span class="hl kwd">PyUnicode_AS_UNICODE</span><span class="hl opt">(</span>alias<span class="hl opt">-&gt;</span>name<span class="hl opt">) ==</span> <span class="hl str">'*'</span><span class="hl opt">) {</span>
            <span class="hl kwa">assert</span><span class="hl opt">(</span>n <span class="hl opt">==</span> <span class="hl num">1</span><span class="hl opt">);</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> IMPORT_STAR<span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>

        <span class="hl kwd">ADDOP_NAME</span><span class="hl opt">(</span>c<span class="hl opt">,</span> IMPORT_FROM<span class="hl opt">,</span> alias<span class="hl opt">-&gt;</span>name<span class="hl opt">,</span> names<span class="hl opt">);</span>
        store_name <span class="hl opt">=</span> alias<span class="hl opt">-&gt;</span>name<span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>alias<span class="hl opt">-&gt;</span>asname<span class="hl opt">)</span>
            store_name <span class="hl opt">=</span> alias<span class="hl opt">-&gt;</span>asname<span class="hl opt">;</span>

        <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> store_name<span class="hl opt">,</span> Store<span class="hl opt">)) {</span>
            <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>names<span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>
    <span class="hl com">/* remove imported module */</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_TOP<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_assert</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">static</span> PyObject <span class="hl opt">*</span>assertion_error <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    basicblock <span class="hl opt">*</span>end<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_optimize<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>assertion_error <span class="hl opt">==</span> NULL<span class="hl opt">) {</span>
        assertion_error <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_InternFromString</span><span class="hl opt">(</span><span class="hl str">&quot;AssertionError&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>assertion_error <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Assert<span class="hl opt">.</span>test<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> Tuple_kind <span class="hl opt">&amp;&amp;</span>
        <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Assert<span class="hl opt">.</span>test<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Tuple<span class="hl opt">.</span>elts<span class="hl opt">) &gt;</span> <span class="hl num">0</span><span class="hl opt">) {</span>
        <span class="hl kwb">const char</span><span class="hl opt">*</span> msg <span class="hl opt">=</span>
            <span class="hl str">&quot;assertion is always true, perhaps remove parentheses?&quot;</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">PyErr_WarnExplicit</span><span class="hl opt">(</span>PyExc_SyntaxWarning<span class="hl opt">,</span> msg<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>c_filename<span class="hl opt">,</span>
                               c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno<span class="hl opt">,</span> NULL<span class="hl opt">,</span> NULL<span class="hl opt">) == -</span><span class="hl num">1</span><span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Assert<span class="hl opt">.</span>test<span class="hl opt">);</span>
    end <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>end <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_JUMP_IF_TRUE<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_GLOBAL<span class="hl opt">,</span> assertion_error<span class="hl opt">,</span> names<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Assert<span class="hl opt">.</span>msg<span class="hl opt">) {</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Assert<span class="hl opt">.</span>msg<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> CALL_FUNCTION<span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> RAISE_VARARGS<span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_visit_stmt</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> n<span class="hl opt">;</span>

    <span class="hl com">/* Always assign a lineno to the next instruction for a stmt. */</span>
    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno <span class="hl opt">=</span> s<span class="hl opt">-&gt;</span>lineno<span class="hl opt">;</span>
    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_col_offset <span class="hl opt">=</span> s<span class="hl opt">-&gt;</span>col_offset<span class="hl opt">;</span>
    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno_set <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl kwa">switch</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>kind<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> FunctionDef_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_function</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">);</span>
    <span class="hl kwa">case</span> ClassDef_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_class</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Return_kind<span class="hl opt">:</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">-&gt;</span>ste_type <span class="hl opt">!=</span> FunctionBlock<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl str">&quot;'return' outside function&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Return<span class="hl opt">.</span>value<span class="hl opt">) {</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Return<span class="hl opt">.</span>value<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">else</span>
            <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> consts<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> RETURN_VALUE<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Delete_kind<span class="hl opt">:</span>
        <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Delete<span class="hl opt">.</span>targets<span class="hl opt">)</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Assign_kind<span class="hl opt">:</span>
        n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Assign<span class="hl opt">.</span>targets<span class="hl opt">);</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Assign<span class="hl opt">.</span>value<span class="hl opt">);</span>
        <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span>i <span class="hl opt">&lt;</span> n <span class="hl opt">-</span> <span class="hl num">1</span><span class="hl opt">)</span>
                <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> DUP_TOP<span class="hl opt">);</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span>
                  <span class="hl opt">(</span>expr_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Assign<span class="hl opt">.</span>targets<span class="hl opt">,</span> i<span class="hl opt">));</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> AugAssign_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_augassign</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">);</span>
    <span class="hl kwa">case</span> For_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_for</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">);</span>
    <span class="hl kwa">case</span> While_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_while</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">);</span>
    <span class="hl kwa">case</span> If_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_if</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Raise_kind<span class="hl opt">:</span>
        n <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Raise<span class="hl opt">.</span>exc<span class="hl opt">) {</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Raise<span class="hl opt">.</span>exc<span class="hl opt">);</span>
            n<span class="hl opt">++;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Raise<span class="hl opt">.</span>cause<span class="hl opt">) {</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Raise<span class="hl opt">.</span>cause<span class="hl opt">);</span>
        n<span class="hl opt">++;</span>
        <span class="hl opt">}</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> RAISE_VARARGS<span class="hl opt">,</span> n<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Try_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_try</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Assert_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_assert</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Import_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_import</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">);</span>
    <span class="hl kwa">case</span> ImportFrom_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_from_import</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Global_kind<span class="hl opt">:</span>
    <span class="hl kwa">case</span> Nonlocal_kind<span class="hl opt">:</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Expr_kind<span class="hl opt">:</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_interactive <span class="hl opt">&amp;&amp;</span> c<span class="hl opt">-&gt;</span>c_nestlevel <span class="hl opt">&lt;=</span> <span class="hl num">1</span><span class="hl opt">) {</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Expr<span class="hl opt">.</span>value<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> PRINT_EXPR<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">else if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Expr<span class="hl opt">.</span>value<span class="hl opt">-&gt;</span>kind <span class="hl opt">!=</span> Str_kind <span class="hl opt">&amp;&amp;</span>
                 s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Expr<span class="hl opt">.</span>value<span class="hl opt">-&gt;</span>kind <span class="hl opt">!=</span> Num_kind<span class="hl opt">) {</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Expr<span class="hl opt">.</span>value<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_TOP<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Pass_kind<span class="hl opt">:</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Break_kind<span class="hl opt">:</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_in_loop</span><span class="hl opt">(</span>c<span class="hl opt">))</span>
            <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl str">&quot;'break' outside loop&quot;</span><span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> BREAK_LOOP<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Continue_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_continue</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">case</span> With_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_with</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">unaryop</span><span class="hl opt">(</span>unaryop_ty op<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>op<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> Invert<span class="hl opt">:</span>
        <span class="hl kwa">return</span> UNARY_INVERT<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Not<span class="hl opt">:</span>
        <span class="hl kwa">return</span> UNARY_NOT<span class="hl opt">;</span>
    <span class="hl kwa">case</span> UAdd<span class="hl opt">:</span>
        <span class="hl kwa">return</span> UNARY_POSITIVE<span class="hl opt">;</span>
    <span class="hl kwa">case</span> USub<span class="hl opt">:</span>
        <span class="hl kwa">return</span> UNARY_NEGATIVE<span class="hl opt">;</span>
    <span class="hl kwa">default</span><span class="hl opt">:</span>
        <span class="hl kwd">PyErr_Format</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
            <span class="hl str">&quot;unary op %d should not be possible&quot;</span><span class="hl opt">,</span> op<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">binop</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> operator_ty op<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>op<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> Add<span class="hl opt">:</span>
        <span class="hl kwa">return</span> BINARY_ADD<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Sub<span class="hl opt">:</span>
        <span class="hl kwa">return</span> BINARY_SUBTRACT<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Mult<span class="hl opt">:</span>
        <span class="hl kwa">return</span> BINARY_MULTIPLY<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Div<span class="hl opt">:</span>
        <span class="hl kwa">return</span> BINARY_TRUE_DIVIDE<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Mod<span class="hl opt">:</span>
        <span class="hl kwa">return</span> BINARY_MODULO<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Pow<span class="hl opt">:</span>
        <span class="hl kwa">return</span> BINARY_POWER<span class="hl opt">;</span>
    <span class="hl kwa">case</span> LShift<span class="hl opt">:</span>
        <span class="hl kwa">return</span> BINARY_LSHIFT<span class="hl opt">;</span>
    <span class="hl kwa">case</span> RShift<span class="hl opt">:</span>
        <span class="hl kwa">return</span> BINARY_RSHIFT<span class="hl opt">;</span>
    <span class="hl kwa">case</span> BitOr<span class="hl opt">:</span>
        <span class="hl kwa">return</span> BINARY_OR<span class="hl opt">;</span>
    <span class="hl kwa">case</span> BitXor<span class="hl opt">:</span>
        <span class="hl kwa">return</span> BINARY_XOR<span class="hl opt">;</span>
    <span class="hl kwa">case</span> BitAnd<span class="hl opt">:</span>
        <span class="hl kwa">return</span> BINARY_AND<span class="hl opt">;</span>
    <span class="hl kwa">case</span> FloorDiv<span class="hl opt">:</span>
        <span class="hl kwa">return</span> BINARY_FLOOR_DIVIDE<span class="hl opt">;</span>
    <span class="hl kwa">default</span><span class="hl opt">:</span>
        <span class="hl kwd">PyErr_Format</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
            <span class="hl str">&quot;binary op %d should not be possible&quot;</span><span class="hl opt">,</span> op<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">cmpop</span><span class="hl opt">(</span>cmpop_ty op<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>op<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> Eq<span class="hl opt">:</span>
        <span class="hl kwa">return</span> PyCmp_EQ<span class="hl opt">;</span>
    <span class="hl kwa">case</span> NotEq<span class="hl opt">:</span>
        <span class="hl kwa">return</span> PyCmp_NE<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Lt<span class="hl opt">:</span>
        <span class="hl kwa">return</span> PyCmp_LT<span class="hl opt">;</span>
    <span class="hl kwa">case</span> LtE<span class="hl opt">:</span>
        <span class="hl kwa">return</span> PyCmp_LE<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Gt<span class="hl opt">:</span>
        <span class="hl kwa">return</span> PyCmp_GT<span class="hl opt">;</span>
    <span class="hl kwa">case</span> GtE<span class="hl opt">:</span>
        <span class="hl kwa">return</span> PyCmp_GE<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Is<span class="hl opt">:</span>
        <span class="hl kwa">return</span> PyCmp_IS<span class="hl opt">;</span>
    <span class="hl kwa">case</span> IsNot<span class="hl opt">:</span>
        <span class="hl kwa">return</span> PyCmp_IS_NOT<span class="hl opt">;</span>
    <span class="hl kwa">case</span> In<span class="hl opt">:</span>
        <span class="hl kwa">return</span> PyCmp_IN<span class="hl opt">;</span>
    <span class="hl kwa">case</span> NotIn<span class="hl opt">:</span>
        <span class="hl kwa">return</span> PyCmp_NOT_IN<span class="hl opt">;</span>
    <span class="hl kwa">default</span><span class="hl opt">:</span>
        <span class="hl kwa">return</span> PyCmp_BAD<span class="hl opt">;</span>
    <span class="hl opt">}</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">inplace_binop</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> operator_ty op<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>op<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> Add<span class="hl opt">:</span>
        <span class="hl kwa">return</span> INPLACE_ADD<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Sub<span class="hl opt">:</span>
        <span class="hl kwa">return</span> INPLACE_SUBTRACT<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Mult<span class="hl opt">:</span>
        <span class="hl kwa">return</span> INPLACE_MULTIPLY<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Div<span class="hl opt">:</span>
        <span class="hl kwa">return</span> INPLACE_TRUE_DIVIDE<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Mod<span class="hl opt">:</span>
        <span class="hl kwa">return</span> INPLACE_MODULO<span class="hl opt">;</span>
    <span class="hl kwa">case</span> Pow<span class="hl opt">:</span>
        <span class="hl kwa">return</span> INPLACE_POWER<span class="hl opt">;</span>
    <span class="hl kwa">case</span> LShift<span class="hl opt">:</span>
        <span class="hl kwa">return</span> INPLACE_LSHIFT<span class="hl opt">;</span>
    <span class="hl kwa">case</span> RShift<span class="hl opt">:</span>
        <span class="hl kwa">return</span> INPLACE_RSHIFT<span class="hl opt">;</span>
    <span class="hl kwa">case</span> BitOr<span class="hl opt">:</span>
        <span class="hl kwa">return</span> INPLACE_OR<span class="hl opt">;</span>
    <span class="hl kwa">case</span> BitXor<span class="hl opt">:</span>
        <span class="hl kwa">return</span> INPLACE_XOR<span class="hl opt">;</span>
    <span class="hl kwa">case</span> BitAnd<span class="hl opt">:</span>
        <span class="hl kwa">return</span> INPLACE_AND<span class="hl opt">;</span>
    <span class="hl kwa">case</span> FloorDiv<span class="hl opt">:</span>
        <span class="hl kwa">return</span> INPLACE_FLOOR_DIVIDE<span class="hl opt">;</span>
    <span class="hl kwa">default</span><span class="hl opt">:</span>
        <span class="hl kwd">PyErr_Format</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
            <span class="hl str">&quot;inplace binary op %d should not be possible&quot;</span><span class="hl opt">,</span> op<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> identifier name<span class="hl opt">,</span> expr_context_ty ctx<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> op<span class="hl opt">,</span> scope<span class="hl opt">,</span> arg<span class="hl opt">;</span>
    <span class="hl kwb">enum</span> <span class="hl opt">{</span> OP_FAST<span class="hl opt">,</span> OP_GLOBAL<span class="hl opt">,</span> OP_DEREF<span class="hl opt">,</span> OP_NAME <span class="hl opt">}</span> optype<span class="hl opt">;</span>

    PyObject <span class="hl opt">*</span>dict <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_names<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>mangled<span class="hl opt">;</span>
    <span class="hl com">/* XXX AugStore isn't used anywhere! */</span>

    mangled <span class="hl opt">=</span> <span class="hl kwd">_Py_Mangle</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_private<span class="hl opt">,</span> name<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>mangled<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    op <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    optype <span class="hl opt">=</span> OP_NAME<span class="hl opt">;</span>
    scope <span class="hl opt">=</span> <span class="hl kwd">PyST_GetScope</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">,</span> mangled<span class="hl opt">);</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>scope<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> FREE<span class="hl opt">:</span>
        dict <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_freevars<span class="hl opt">;</span>
        optype <span class="hl opt">=</span> OP_DEREF<span class="hl opt">;</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> CELL<span class="hl opt">:</span>
        dict <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_cellvars<span class="hl opt">;</span>
        optype <span class="hl opt">=</span> OP_DEREF<span class="hl opt">;</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> LOCAL<span class="hl opt">:</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">-&gt;</span>ste_type <span class="hl opt">==</span> FunctionBlock<span class="hl opt">)</span>
            optype <span class="hl opt">=</span> OP_FAST<span class="hl opt">;</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> GLOBAL_IMPLICIT<span class="hl opt">:</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">-&gt;</span>ste_type <span class="hl opt">==</span> FunctionBlock <span class="hl opt">&amp;&amp;</span>
            <span class="hl opt">!</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">-&gt;</span>ste_unoptimized<span class="hl opt">)</span>
            optype <span class="hl opt">=</span> OP_GLOBAL<span class="hl opt">;</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> GLOBAL_EXPLICIT<span class="hl opt">:</span>
        optype <span class="hl opt">=</span> OP_GLOBAL<span class="hl opt">;</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">default</span><span class="hl opt">:</span>
        <span class="hl com">/* scope can be 0 */</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>

    <span class="hl com">/* XXX Leave assert here, but handle __doc__ and the like better */</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>scope <span class="hl opt">||</span> <span class="hl kwd">PyUnicode_AS_UNICODE</span><span class="hl opt">(</span>name<span class="hl opt">)[</span><span class="hl num">0</span><span class="hl opt">] ==</span> <span class="hl str">'_'</span><span class="hl opt">);</span>

    <span class="hl kwa">switch</span> <span class="hl opt">(</span>optype<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> OP_DEREF<span class="hl opt">:</span>
        <span class="hl kwa">switch</span> <span class="hl opt">(</span>ctx<span class="hl opt">) {</span>
        <span class="hl kwa">case</span> Load<span class="hl opt">:</span> op <span class="hl opt">=</span> LOAD_DEREF<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Store<span class="hl opt">:</span> op <span class="hl opt">=</span> STORE_DEREF<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> AugLoad<span class="hl opt">:</span>
        <span class="hl kwa">case</span> AugStore<span class="hl opt">:</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Del<span class="hl opt">:</span> op <span class="hl opt">=</span> DELETE_DEREF<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Param<span class="hl opt">:</span>
        <span class="hl kwa">default</span><span class="hl opt">:</span>
            <span class="hl kwd">PyErr_SetString</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                            <span class="hl str">&quot;param invalid for deref variable&quot;</span><span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> OP_FAST<span class="hl opt">:</span>
        <span class="hl kwa">switch</span> <span class="hl opt">(</span>ctx<span class="hl opt">) {</span>
        <span class="hl kwa">case</span> Load<span class="hl opt">:</span> op <span class="hl opt">=</span> LOAD_FAST<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Store<span class="hl opt">:</span> op <span class="hl opt">=</span> STORE_FAST<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Del<span class="hl opt">:</span> op <span class="hl opt">=</span> DELETE_FAST<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> AugLoad<span class="hl opt">:</span>
        <span class="hl kwa">case</span> AugStore<span class="hl opt">:</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Param<span class="hl opt">:</span>
        <span class="hl kwa">default</span><span class="hl opt">:</span>
            <span class="hl kwd">PyErr_SetString</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                            <span class="hl str">&quot;param invalid for local variable&quot;</span><span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> op<span class="hl opt">,</span> mangled<span class="hl opt">,</span> varnames<span class="hl opt">);</span>
        <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>mangled<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> OP_GLOBAL<span class="hl opt">:</span>
        <span class="hl kwa">switch</span> <span class="hl opt">(</span>ctx<span class="hl opt">) {</span>
        <span class="hl kwa">case</span> Load<span class="hl opt">:</span> op <span class="hl opt">=</span> LOAD_GLOBAL<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Store<span class="hl opt">:</span> op <span class="hl opt">=</span> STORE_GLOBAL<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Del<span class="hl opt">:</span> op <span class="hl opt">=</span> DELETE_GLOBAL<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> AugLoad<span class="hl opt">:</span>
        <span class="hl kwa">case</span> AugStore<span class="hl opt">:</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Param<span class="hl opt">:</span>
        <span class="hl kwa">default</span><span class="hl opt">:</span>
            <span class="hl kwd">PyErr_SetString</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                            <span class="hl str">&quot;param invalid for global variable&quot;</span><span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> OP_NAME<span class="hl opt">:</span>
        <span class="hl kwa">switch</span> <span class="hl opt">(</span>ctx<span class="hl opt">) {</span>
        <span class="hl kwa">case</span> Load<span class="hl opt">:</span> op <span class="hl opt">=</span> LOAD_NAME<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Store<span class="hl opt">:</span> op <span class="hl opt">=</span> STORE_NAME<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Del<span class="hl opt">:</span> op <span class="hl opt">=</span> DELETE_NAME<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> AugLoad<span class="hl opt">:</span>
        <span class="hl kwa">case</span> AugStore<span class="hl opt">:</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Param<span class="hl opt">:</span>
        <span class="hl kwa">default</span><span class="hl opt">:</span>
            <span class="hl kwd">PyErr_SetString</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                            <span class="hl str">&quot;param invalid for name variable&quot;</span><span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">assert</span><span class="hl opt">(</span>op<span class="hl opt">);</span>
    arg <span class="hl opt">=</span> <span class="hl kwd">compiler_add_o</span><span class="hl opt">(</span>c<span class="hl opt">,</span> dict<span class="hl opt">,</span> mangled<span class="hl opt">);</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>mangled<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>arg <span class="hl opt">&lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">return</span> <span class="hl kwd">compiler_addop_i</span><span class="hl opt">(</span>c<span class="hl opt">,</span> op<span class="hl opt">,</span> arg<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_boolop</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>end<span class="hl opt">;</span>
    <span class="hl kwb">int</span> jumpi<span class="hl opt">,</span> i<span class="hl opt">,</span> n<span class="hl opt">;</span>
    asdl_seq <span class="hl opt">*</span>s<span class="hl opt">;</span>

    <span class="hl kwa">assert</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> BoolOp_kind<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>BoolOp<span class="hl opt">.</span>op <span class="hl opt">==</span> And<span class="hl opt">)</span>
        jumpi <span class="hl opt">=</span> JUMP_IF_FALSE_OR_POP<span class="hl opt">;</span>
    <span class="hl kwa">else</span>
        jumpi <span class="hl opt">=</span> JUMP_IF_TRUE_OR_POP<span class="hl opt">;</span>
    end <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>end <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    s <span class="hl opt">=</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>BoolOp<span class="hl opt">.</span>values<span class="hl opt">;</span>
    n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>s<span class="hl opt">) -</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>n <span class="hl opt">&gt;=</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">; ++</span>i<span class="hl opt">) {</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">, (</span>expr_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>s<span class="hl opt">,</span> i<span class="hl opt">));</span>
        <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> jumpi<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">, (</span>expr_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>s<span class="hl opt">,</span> n<span class="hl opt">));</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_list</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>List<span class="hl opt">.</span>elts<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>List<span class="hl opt">.</span>ctx <span class="hl opt">==</span> Store<span class="hl opt">) {</span>
        <span class="hl kwb">int</span> i<span class="hl opt">,</span> seen_star <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
            expr_ty elt <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>List<span class="hl opt">.</span>elts<span class="hl opt">,</span> i<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span>elt<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> Starred_kind <span class="hl opt">&amp;&amp; !</span>seen_star<span class="hl opt">) {</span>
                <span class="hl kwa">if</span> <span class="hl opt">((</span>i <span class="hl opt">&gt;= (</span><span class="hl num">1</span> <span class="hl opt">&lt;&lt;</span> <span class="hl num">8</span><span class="hl opt">)) ||</span>
                    <span class="hl opt">(</span>n<span class="hl opt">-</span>i<span class="hl opt">-</span><span class="hl num">1</span> <span class="hl opt">&gt;= (</span>INT_MAX <span class="hl opt">&gt;&gt;</span> <span class="hl num">8</span><span class="hl opt">)))</span>
                    <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span>
                        <span class="hl str">&quot;too many expressions in &quot;</span>
                        <span class="hl str">&quot;star-unpacking assignment&quot;</span><span class="hl opt">);</span>
                <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> UNPACK_EX<span class="hl opt">, (</span>i <span class="hl opt">+ ((</span>n<span class="hl opt">-</span>i<span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">) &lt;&lt;</span> <span class="hl num">8</span><span class="hl opt">)));</span>
                seen_star <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
                <span class="hl kwd">asdl_seq_SET</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>List<span class="hl opt">.</span>elts<span class="hl opt">,</span> i<span class="hl opt">,</span> elt<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Starred<span class="hl opt">.</span>value<span class="hl opt">);</span>
            <span class="hl opt">}</span> <span class="hl kwa">else if</span> <span class="hl opt">(</span>elt<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> Starred_kind<span class="hl opt">) {</span>
                <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span>
                    <span class="hl str">&quot;two starred expressions in assignment&quot;</span><span class="hl opt">);</span>
            <span class="hl opt">}</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>seen_star<span class="hl opt">) {</span>
            <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> UNPACK_SEQUENCE<span class="hl opt">,</span> n<span class="hl opt">);</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>List<span class="hl opt">.</span>elts<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>List<span class="hl opt">.</span>ctx <span class="hl opt">==</span> Load<span class="hl opt">) {</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> BUILD_LIST<span class="hl opt">,</span> n<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_tuple</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Tuple<span class="hl opt">.</span>elts<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Tuple<span class="hl opt">.</span>ctx <span class="hl opt">==</span> Store<span class="hl opt">) {</span>
        <span class="hl kwb">int</span> i<span class="hl opt">,</span> seen_star <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
            expr_ty elt <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Tuple<span class="hl opt">.</span>elts<span class="hl opt">,</span> i<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span>elt<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> Starred_kind <span class="hl opt">&amp;&amp; !</span>seen_star<span class="hl opt">) {</span>
                <span class="hl kwa">if</span> <span class="hl opt">((</span>i <span class="hl opt">&gt;= (</span><span class="hl num">1</span> <span class="hl opt">&lt;&lt;</span> <span class="hl num">8</span><span class="hl opt">)) ||</span>
                    <span class="hl opt">(</span>n<span class="hl opt">-</span>i<span class="hl opt">-</span><span class="hl num">1</span> <span class="hl opt">&gt;= (</span>INT_MAX <span class="hl opt">&gt;&gt;</span> <span class="hl num">8</span><span class="hl opt">)))</span>
                    <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span>
                        <span class="hl str">&quot;too many expressions in &quot;</span>
                        <span class="hl str">&quot;star-unpacking assignment&quot;</span><span class="hl opt">);</span>
                <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> UNPACK_EX<span class="hl opt">, (</span>i <span class="hl opt">+ ((</span>n<span class="hl opt">-</span>i<span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">) &lt;&lt;</span> <span class="hl num">8</span><span class="hl opt">)));</span>
                seen_star <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
                <span class="hl kwd">asdl_seq_SET</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Tuple<span class="hl opt">.</span>elts<span class="hl opt">,</span> i<span class="hl opt">,</span> elt<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Starred<span class="hl opt">.</span>value<span class="hl opt">);</span>
            <span class="hl opt">}</span> <span class="hl kwa">else if</span> <span class="hl opt">(</span>elt<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> Starred_kind<span class="hl opt">) {</span>
                <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span>
                    <span class="hl str">&quot;two starred expressions in assignment&quot;</span><span class="hl opt">);</span>
            <span class="hl opt">}</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>seen_star<span class="hl opt">) {</span>
            <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> UNPACK_SEQUENCE<span class="hl opt">,</span> n<span class="hl opt">);</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Tuple<span class="hl opt">.</span>elts<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Tuple<span class="hl opt">.</span>ctx <span class="hl opt">==</span> Load<span class="hl opt">) {</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> BUILD_TUPLE<span class="hl opt">,</span> n<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_compare</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> n<span class="hl opt">;</span>
    basicblock <span class="hl opt">*</span>cleanup <span class="hl opt">=</span> NULL<span class="hl opt">;</span>

    <span class="hl com">/* XXX the logic can be cleaned up for 1 or multiple comparisons */</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Compare<span class="hl opt">.</span>left<span class="hl opt">);</span>
    n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Compare<span class="hl opt">.</span>ops<span class="hl opt">);</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>n <span class="hl opt">&gt;</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>n <span class="hl opt">&gt;</span> <span class="hl num">1</span><span class="hl opt">) {</span>
        cleanup <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>cleanup <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span>
            <span class="hl opt">(</span>expr_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Compare<span class="hl opt">.</span>comparators<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">));</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> DUP_TOP<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> ROT_THREE<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> COMPARE_OP<span class="hl opt">,</span>
            <span class="hl kwd">cmpop</span><span class="hl opt">((</span>cmpop_ty<span class="hl opt">)(</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>
                                      e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Compare<span class="hl opt">.</span>ops<span class="hl opt">,</span> i <span class="hl opt">-</span> <span class="hl num">1</span><span class="hl opt">))));</span>
        <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> JUMP_IF_FALSE_OR_POP<span class="hl opt">,</span> cleanup<span class="hl opt">);</span>
        <span class="hl kwd">NEXT_BLOCK</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>i <span class="hl opt">&lt; (</span>n <span class="hl opt">-</span> <span class="hl num">1</span><span class="hl opt">))</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span>
                <span class="hl opt">(</span>expr_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Compare<span class="hl opt">.</span>comparators<span class="hl opt">,</span> i<span class="hl opt">));</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">, (</span>expr_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Compare<span class="hl opt">.</span>comparators<span class="hl opt">,</span> n <span class="hl opt">-</span> <span class="hl num">1</span><span class="hl opt">));</span>
    <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> COMPARE_OP<span class="hl opt">,</span>
           <span class="hl kwd">cmpop</span><span class="hl opt">((</span>cmpop_ty<span class="hl opt">)(</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Compare<span class="hl opt">.</span>ops<span class="hl opt">,</span> n <span class="hl opt">-</span> <span class="hl num">1</span><span class="hl opt">))));</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>n <span class="hl opt">&gt;</span> <span class="hl num">1</span><span class="hl opt">) {</span>
        basicblock <span class="hl opt">*</span>end <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>end <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> JUMP_FORWARD<span class="hl opt">,</span> end<span class="hl opt">);</span>
        <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> cleanup<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> ROT_TWO<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_TOP<span class="hl opt">);</span>
        <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> end<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_call</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Call<span class="hl opt">.</span>func<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl kwd">compiler_call_helper</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span>
                                e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Call<span class="hl opt">.</span>args<span class="hl opt">,</span>
                                e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Call<span class="hl opt">.</span>keywords<span class="hl opt">,</span>
                                e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Call<span class="hl opt">.</span>starargs<span class="hl opt">,</span>
                                e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Call<span class="hl opt">.</span>kwargs<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl com">/* shared code between compiler_call and compiler_class */</span>
<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_call_helper</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span>
                     <span class="hl kwb">int</span> n<span class="hl opt">,</span> <span class="hl com">/* Args already pushed */</span>
             asdl_seq <span class="hl opt">*</span>args<span class="hl opt">,</span>
             asdl_seq <span class="hl opt">*</span>keywords<span class="hl opt">,</span>
             expr_ty starargs<span class="hl opt">,</span>
             expr_ty kwargs<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> code <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>

    n <span class="hl opt">+=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>args<span class="hl opt">);</span>
    <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> args<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>keywords<span class="hl opt">) {</span>
        <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> keyword<span class="hl opt">,</span> keywords<span class="hl opt">);</span>
        n <span class="hl opt">|=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>keywords<span class="hl opt">) &lt;&lt;</span> <span class="hl num">8</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>starargs<span class="hl opt">) {</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> starargs<span class="hl opt">);</span>
        code <span class="hl opt">|=</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>kwargs<span class="hl opt">) {</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> kwargs<span class="hl opt">);</span>
        code <span class="hl opt">|=</span> <span class="hl num">2</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>code<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> <span class="hl num">0</span><span class="hl opt">:</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> CALL_FUNCTION<span class="hl opt">,</span> n<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> <span class="hl num">1</span><span class="hl opt">:</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> CALL_FUNCTION_VAR<span class="hl opt">,</span> n<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> <span class="hl num">2</span><span class="hl opt">:</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> CALL_FUNCTION_KW<span class="hl opt">,</span> n<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> <span class="hl num">3</span><span class="hl opt">:</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> CALL_FUNCTION_VAR_KW<span class="hl opt">,</span> n<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>


<span class="hl com">/* List and set comprehensions and generator expressions work by creating a</span>
<span class="hl com">  nested function to perform the actual iteration. This means that the</span>
<span class="hl com">  iteration variables don't leak into the current scope.</span>
<span class="hl com">  The defined function is called immediately following its definition, with the</span>
<span class="hl com">  result of that call being the result of the expression.</span>
<span class="hl com">  The LC/SC version returns the populated container, while the GE version is</span>
<span class="hl com">  flagged in symtable.c as a generator, so it returns the generator object</span>
<span class="hl com">  when the function is called.</span>
<span class="hl com">  This code *knows* that the loop cannot contain break, continue, or return,</span>
<span class="hl com">  so it cheats and skips the SETUP_LOOP/POP_BLOCK steps used in normal loops.</span>
<span class="hl com"></span>
<span class="hl com">  Possible cleanups:</span>
<span class="hl com">    - iterate over the generator sequence instead of using recursion</span>
<span class="hl com">*/</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_comprehension_generator</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span>
                                 asdl_seq <span class="hl opt">*</span>generators<span class="hl opt">,</span> <span class="hl kwb">int</span> gen_index<span class="hl opt">,</span>
                                 expr_ty elt<span class="hl opt">,</span> expr_ty val<span class="hl opt">,</span> <span class="hl kwb">int</span> type<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl com">/* generate code for the iterator, then each of the ifs,</span>
<span class="hl com">       and then write to the element */</span>

    comprehension_ty gen<span class="hl opt">;</span>
    basicblock <span class="hl opt">*</span>start<span class="hl opt">, *</span>anchor<span class="hl opt">, *</span>skip<span class="hl opt">, *</span>if_cleanup<span class="hl opt">;</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> n<span class="hl opt">;</span>

    start <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    skip <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    if_cleanup <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    anchor <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>start <span class="hl opt">==</span> NULL <span class="hl opt">||</span> skip <span class="hl opt">==</span> NULL <span class="hl opt">||</span> if_cleanup <span class="hl opt">==</span> NULL <span class="hl opt">||</span>
        anchor <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    gen <span class="hl opt">= (</span>comprehension_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>generators<span class="hl opt">,</span> gen_index<span class="hl opt">);</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>gen_index <span class="hl opt">==</span> <span class="hl num">0</span><span class="hl opt">) {</span>
        <span class="hl com">/* Receive outermost iter as an implicit argument */</span>
        c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_argcount <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_FAST<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else</span> <span class="hl opt">{</span>
        <span class="hl com">/* Sub-iter - calculate on the fly */</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> gen<span class="hl opt">-&gt;</span>iter<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> GET_ITER<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> start<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FOR_ITER<span class="hl opt">,</span> anchor<span class="hl opt">);</span>
    <span class="hl kwd">NEXT_BLOCK</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> gen<span class="hl opt">-&gt;</span>target<span class="hl opt">);</span>

    <span class="hl com">/* XXX this needs to be cleaned up...a lot! */</span>
    n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>gen<span class="hl opt">-&gt;</span>ifs<span class="hl opt">);</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
        expr_ty e <span class="hl opt">= (</span>expr_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>gen<span class="hl opt">-&gt;</span>ifs<span class="hl opt">,</span> i<span class="hl opt">);</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_JUMP_IF_FALSE<span class="hl opt">,</span> if_cleanup<span class="hl opt">);</span>
        <span class="hl kwd">NEXT_BLOCK</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">if</span> <span class="hl opt">(++</span>gen_index <span class="hl opt">&lt;</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>generators<span class="hl opt">))</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_comprehension_generator</span><span class="hl opt">(</span>c<span class="hl opt">,</span>
                                              generators<span class="hl opt">,</span> gen_index<span class="hl opt">,</span>
                                              elt<span class="hl opt">,</span> val<span class="hl opt">,</span> type<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl com">/* only append after the last for generator */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>gen_index <span class="hl opt">&gt;=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>generators<span class="hl opt">)) {</span>
        <span class="hl com">/* comprehension specific code */</span>
        <span class="hl kwa">switch</span> <span class="hl opt">(</span>type<span class="hl opt">) {</span>
        <span class="hl kwa">case</span> COMP_GENEXP<span class="hl opt">:</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> elt<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> YIELD_VALUE<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_TOP<span class="hl opt">);</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> COMP_LISTCOMP<span class="hl opt">:</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> elt<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LIST_APPEND<span class="hl opt">,</span> gen_index <span class="hl opt">+</span> <span class="hl num">1</span><span class="hl opt">);</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> COMP_SETCOMP<span class="hl opt">:</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> elt<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> SET_ADD<span class="hl opt">,</span> gen_index <span class="hl opt">+</span> <span class="hl num">1</span><span class="hl opt">);</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> COMP_DICTCOMP<span class="hl opt">:</span>
            <span class="hl com">/* With 'd[k] = v', v is evaluated before k, so we do</span>
<span class="hl com">               the same. */</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> val<span class="hl opt">);</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> elt<span class="hl opt">);</span>
            <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> MAP_ADD<span class="hl opt">,</span> gen_index <span class="hl opt">+</span> <span class="hl num">1</span><span class="hl opt">);</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">default</span><span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>

        <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> skip<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> if_cleanup<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_JABS</span><span class="hl opt">(</span>c<span class="hl opt">,</span> JUMP_ABSOLUTE<span class="hl opt">,</span> start<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> anchor<span class="hl opt">);</span>

    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_comprehension</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">,</span> <span class="hl kwb">int</span> type<span class="hl opt">,</span> identifier name<span class="hl opt">,</span>
                       asdl_seq <span class="hl opt">*</span>generators<span class="hl opt">,</span> expr_ty elt<span class="hl opt">,</span> expr_ty val<span class="hl opt">)</span>
<span class="hl opt">{</span>
    PyCodeObject <span class="hl opt">*</span>co <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    expr_ty outermost_iter<span class="hl opt">;</span>

    outermost_iter <span class="hl opt">= ((</span>comprehension_ty<span class="hl opt">)</span>
                      <span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>generators<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">))-&gt;</span>iter<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_enter_scope</span><span class="hl opt">(</span>c<span class="hl opt">,</span> name<span class="hl opt">, (</span><span class="hl kwb">void</span> <span class="hl opt">*)</span>e<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>lineno<span class="hl opt">))</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>type <span class="hl opt">!=</span> COMP_GENEXP<span class="hl opt">) {</span>
        <span class="hl kwb">int</span> op<span class="hl opt">;</span>
        <span class="hl kwa">switch</span> <span class="hl opt">(</span>type<span class="hl opt">) {</span>
        <span class="hl kwa">case</span> COMP_LISTCOMP<span class="hl opt">:</span>
            op <span class="hl opt">=</span> BUILD_LIST<span class="hl opt">;</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> COMP_SETCOMP<span class="hl opt">:</span>
            op <span class="hl opt">=</span> BUILD_SET<span class="hl opt">;</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> COMP_DICTCOMP<span class="hl opt">:</span>
            op <span class="hl opt">=</span> BUILD_MAP<span class="hl opt">;</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">default</span><span class="hl opt">:</span>
            <span class="hl kwd">PyErr_Format</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                         <span class="hl str">&quot;unknown comprehension type %d&quot;</span><span class="hl opt">,</span> type<span class="hl opt">);</span>
            <span class="hl kwa">goto</span> error_in_scope<span class="hl opt">;</span>
        <span class="hl opt">}</span>

        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> op<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_comprehension_generator</span><span class="hl opt">(</span>c<span class="hl opt">,</span> generators<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span> elt<span class="hl opt">,</span>
                                          val<span class="hl opt">,</span> type<span class="hl opt">))</span>
        <span class="hl kwa">goto</span> error_in_scope<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>type <span class="hl opt">!=</span> COMP_GENEXP<span class="hl opt">) {</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> RETURN_VALUE<span class="hl opt">);</span>
    <span class="hl opt">}</span>

    co <span class="hl opt">=</span> <span class="hl kwd">assemble</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">);</span>
    <span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>co <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_make_closure</span><span class="hl opt">(</span>c<span class="hl opt">,</span> co<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">))</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>co<span class="hl opt">);</span>

    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> outermost_iter<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> GET_ITER<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> CALL_FUNCTION<span class="hl opt">,</span> <span class="hl num">1</span><span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
error_in_scope<span class="hl opt">:</span>
    <span class="hl kwd">compiler_exit_scope</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
error<span class="hl opt">:</span>
    <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>co<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_genexp</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">static</span> identifier name<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>name<span class="hl opt">) {</span>
        name <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_FromString</span><span class="hl opt">(</span><span class="hl str">&quot;&lt;genexpr&gt;&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>name<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> GeneratorExp_kind<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl kwd">compiler_comprehension</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">,</span> COMP_GENEXP<span class="hl opt">,</span> name<span class="hl opt">,</span>
                                  e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>GeneratorExp<span class="hl opt">.</span>generators<span class="hl opt">,</span>
                                  e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>GeneratorExp<span class="hl opt">.</span>elt<span class="hl opt">,</span> NULL<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_listcomp</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">static</span> identifier name<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>name<span class="hl opt">) {</span>
        name <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_FromString</span><span class="hl opt">(</span><span class="hl str">&quot;&lt;listcomp&gt;&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>name<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> ListComp_kind<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl kwd">compiler_comprehension</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">,</span> COMP_LISTCOMP<span class="hl opt">,</span> name<span class="hl opt">,</span>
                                  e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ListComp<span class="hl opt">.</span>generators<span class="hl opt">,</span>
                                  e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ListComp<span class="hl opt">.</span>elt<span class="hl opt">,</span> NULL<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_setcomp</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">static</span> identifier name<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>name<span class="hl opt">) {</span>
        name <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_FromString</span><span class="hl opt">(</span><span class="hl str">&quot;&lt;setcomp&gt;&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>name<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> SetComp_kind<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl kwd">compiler_comprehension</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">,</span> COMP_SETCOMP<span class="hl opt">,</span> name<span class="hl opt">,</span>
                                  e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>SetComp<span class="hl opt">.</span>generators<span class="hl opt">,</span>
                                  e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>SetComp<span class="hl opt">.</span>elt<span class="hl opt">,</span> NULL<span class="hl opt">);</span>
<span class="hl opt">}</span>


<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_dictcomp</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">static</span> identifier name<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>name<span class="hl opt">) {</span>
        name <span class="hl opt">=</span> <span class="hl kwd">PyUnicode_FromString</span><span class="hl opt">(</span><span class="hl str">&quot;&lt;dictcomp&gt;&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>name<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> DictComp_kind<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl kwd">compiler_comprehension</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">,</span> COMP_DICTCOMP<span class="hl opt">,</span> name<span class="hl opt">,</span>
                                  e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>DictComp<span class="hl opt">.</span>generators<span class="hl opt">,</span>
                                  e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>DictComp<span class="hl opt">.</span>key<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>DictComp<span class="hl opt">.</span>value<span class="hl opt">);</span>
<span class="hl opt">}</span>


<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_visit_keyword</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> keyword_ty k<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> k<span class="hl opt">-&gt;</span>arg<span class="hl opt">,</span> consts<span class="hl opt">);</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> k<span class="hl opt">-&gt;</span>value<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl com">/* Test whether expression is constant.  For constants, report</span>
<span class="hl com">   whether they are true or false.</span>
<span class="hl com"></span>
<span class="hl com">   Return values: 1 for true, 0 for false, -1 for non-constant.</span>
<span class="hl com"> */</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">expr_constant</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">char</span> <span class="hl opt">*</span>id<span class="hl opt">;</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>kind<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> Ellipsis_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Num_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">PyObject_IsTrue</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Num<span class="hl opt">.</span>n<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Str_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">PyObject_IsTrue</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Str<span class="hl opt">.</span>s<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Name_kind<span class="hl opt">:</span>
        <span class="hl com">/* optimize away names that can't be reassigned */</span>
        id <span class="hl opt">=</span> <span class="hl kwd">PyBytes_AS_STRING</span><span class="hl opt">(</span>
            <span class="hl kwd">_PyUnicode_AsDefaultEncodedString</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Name<span class="hl opt">.</span>id<span class="hl opt">));</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">strcmp</span><span class="hl opt">(</span>id<span class="hl opt">,</span> <span class="hl str">&quot;True&quot;</span><span class="hl opt">) ==</span> <span class="hl num">0</span><span class="hl opt">)</span> <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">strcmp</span><span class="hl opt">(</span>id<span class="hl opt">,</span> <span class="hl str">&quot;False&quot;</span><span class="hl opt">) ==</span> <span class="hl num">0</span><span class="hl opt">)</span> <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">strcmp</span><span class="hl opt">(</span>id<span class="hl opt">,</span> <span class="hl str">&quot;None&quot;</span><span class="hl opt">) ==</span> <span class="hl num">0</span><span class="hl opt">)</span> <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">strcmp</span><span class="hl opt">(</span>id<span class="hl opt">,</span> <span class="hl str">&quot;__debug__&quot;</span><span class="hl opt">) ==</span> <span class="hl num">0</span><span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl opt">!</span> c<span class="hl opt">-&gt;</span>c_optimize<span class="hl opt">;</span>
        <span class="hl com">/* fall through */</span>
    <span class="hl kwa">default</span><span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
<span class="hl opt">}</span>

<span class="hl com">/*</span>
<span class="hl com">   Implements the with statement from PEP 343.</span>
<span class="hl com"></span>
<span class="hl com">   The semantics outlined in that PEP are as follows:</span>
<span class="hl com"></span>
<span class="hl com">   with EXPR as VAR:</span>
<span class="hl com">       BLOCK</span>
<span class="hl com"></span>
<span class="hl com">   It is implemented roughly as:</span>
<span class="hl com"></span>
<span class="hl com">   context = EXPR</span>
<span class="hl com">   exit = context.__exit__  # not calling it</span>
<span class="hl com">   value = context.__enter__()</span>
<span class="hl com">   try:</span>
<span class="hl com">       VAR = value  # if VAR present in the syntax</span>
<span class="hl com">       BLOCK</span>
<span class="hl com">   finally:</span>
<span class="hl com">       if an exception was raised:</span>
<span class="hl com">       exc = copy of (exception, instance, traceback)</span>
<span class="hl com">       else:</span>
<span class="hl com">       exc = (None, None, None)</span>
<span class="hl com">       exit(*exc)</span>
<span class="hl com"> */</span>
<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_with</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">,</span> <span class="hl kwb">int</span> pos<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>block<span class="hl opt">, *</span>finally<span class="hl opt">;</span>
    withitem_ty item <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>With<span class="hl opt">.</span>items<span class="hl opt">,</span> pos<span class="hl opt">);</span>

    <span class="hl kwa">assert</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> With_kind<span class="hl opt">);</span>

    block <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    finally <span class="hl opt">=</span> <span class="hl kwd">compiler_new_block</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>block <span class="hl opt">|| !</span>finally<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl com">/* Evaluate EXPR */</span>
    <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> item<span class="hl opt">-&gt;</span>context_expr<span class="hl opt">);</span>
    <span class="hl kwd">ADDOP_JREL</span><span class="hl opt">(</span>c<span class="hl opt">,</span> SETUP_WITH<span class="hl opt">,</span> finally<span class="hl opt">);</span>

    <span class="hl com">/* SETUP_WITH pushes a finally block. */</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> block<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_push_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_TRY<span class="hl opt">,</span> block<span class="hl opt">)) {</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>item<span class="hl opt">-&gt;</span>optional_vars<span class="hl opt">) {</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> item<span class="hl opt">-&gt;</span>optional_vars<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else</span> <span class="hl opt">{</span>
    <span class="hl com">/* Discard result from context.__enter__() */</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_TOP<span class="hl opt">);</span>
    <span class="hl opt">}</span>

    pos<span class="hl opt">++;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>pos <span class="hl opt">==</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>With<span class="hl opt">.</span>items<span class="hl opt">))</span>
        <span class="hl com">/* BLOCK code */</span>
        <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> stmt<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>With<span class="hl opt">.</span>body<span class="hl opt">)</span>
    <span class="hl kwa">else if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_with</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">,</span> pos<span class="hl opt">))</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl com">/* End of try block; start the finally block */</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> POP_BLOCK<span class="hl opt">);</span>
    <span class="hl kwd">compiler_pop_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_TRY<span class="hl opt">,</span> block<span class="hl opt">);</span>

    <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> consts<span class="hl opt">);</span>
    <span class="hl kwd">compiler_use_next_block</span><span class="hl opt">(</span>c<span class="hl opt">,</span> finally<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_push_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_END<span class="hl opt">,</span> finally<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl com">/* Finally block starts; context.__exit__ is on the stack under</span>
<span class="hl com">       the exception or return information. Just issue our magic</span>
<span class="hl com">       opcode. */</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> WITH_CLEANUP<span class="hl opt">);</span>

    <span class="hl com">/* Finally block ends. */</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> END_FINALLY<span class="hl opt">);</span>
    <span class="hl kwd">compiler_pop_fblock</span><span class="hl opt">(</span>c<span class="hl opt">,</span> FINALLY_END<span class="hl opt">,</span> finally<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_visit_expr</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> expr_ty e<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> n<span class="hl opt">;</span>

    <span class="hl com">/* If expr e has a different line number than the last expr/stmt,</span>
<span class="hl com">       set a new line number for the next instruction.</span>
<span class="hl com">    */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>lineno <span class="hl opt">&gt;</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno<span class="hl opt">) {</span>
        c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno <span class="hl opt">=</span> e<span class="hl opt">-&gt;</span>lineno<span class="hl opt">;</span>
        c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno_set <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl com">/* Updating the column offset is always harmless. */</span>
    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_col_offset <span class="hl opt">=</span> e<span class="hl opt">-&gt;</span>col_offset<span class="hl opt">;</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>kind<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> BoolOp_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_boolop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">);</span>
    <span class="hl kwa">case</span> BinOp_kind<span class="hl opt">:</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>BinOp<span class="hl opt">.</span>left<span class="hl opt">);</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>BinOp<span class="hl opt">.</span>right<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl kwd">binop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>BinOp<span class="hl opt">.</span>op<span class="hl opt">));</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> UnaryOp_kind<span class="hl opt">:</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>UnaryOp<span class="hl opt">.</span>operand<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl kwd">unaryop</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>UnaryOp<span class="hl opt">.</span>op<span class="hl opt">));</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Lambda_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_lambda</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">);</span>
    <span class="hl kwa">case</span> IfExp_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_ifexp</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Dict_kind<span class="hl opt">:</span>
        n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Dict<span class="hl opt">.</span>values<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> BUILD_MAP<span class="hl opt">, (</span>n<span class="hl opt">&gt;</span><span class="hl num">0xFFFF</span> ? <span class="hl num">0xFFFF</span> <span class="hl opt">:</span> n<span class="hl opt">));</span>
        <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span>
                <span class="hl opt">(</span>expr_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Dict<span class="hl opt">.</span>values<span class="hl opt">,</span> i<span class="hl opt">));</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span>
                <span class="hl opt">(</span>expr_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Dict<span class="hl opt">.</span>keys<span class="hl opt">,</span> i<span class="hl opt">));</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> STORE_MAP<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Set_kind<span class="hl opt">:</span>
        n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Set<span class="hl opt">.</span>elts<span class="hl opt">);</span>
        <span class="hl kwd">VISIT_SEQ</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Set<span class="hl opt">.</span>elts<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> BUILD_SET<span class="hl opt">,</span> n<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> GeneratorExp_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_genexp</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">);</span>
    <span class="hl kwa">case</span> ListComp_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_listcomp</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">);</span>
    <span class="hl kwa">case</span> SetComp_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_setcomp</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">);</span>
    <span class="hl kwa">case</span> DictComp_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_dictcomp</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Yield_kind<span class="hl opt">:</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">-&gt;</span>ste_type <span class="hl opt">!=</span> FunctionBlock<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl str">&quot;'yield' outside function&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Yield<span class="hl opt">.</span>value<span class="hl opt">) {</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Yield<span class="hl opt">.</span>value<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">else</span> <span class="hl opt">{</span>
            <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> consts<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> YIELD_VALUE<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Compare_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_compare</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Call_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_call</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Num_kind<span class="hl opt">:</span>
        <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Num<span class="hl opt">.</span>n<span class="hl opt">,</span> consts<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Str_kind<span class="hl opt">:</span>
        <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Str<span class="hl opt">.</span>s<span class="hl opt">,</span> consts<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Bytes_kind<span class="hl opt">:</span>
        <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Bytes<span class="hl opt">.</span>s<span class="hl opt">,</span> consts<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Ellipsis_kind<span class="hl opt">:</span>
        <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> Py_Ellipsis<span class="hl opt">,</span> consts<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl com">/* The following exprs can be assignment targets. */</span>
    <span class="hl kwa">case</span> Attribute_kind<span class="hl opt">:</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Attribute<span class="hl opt">.</span>ctx <span class="hl opt">!=</span> AugStore<span class="hl opt">)</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Attribute<span class="hl opt">.</span>value<span class="hl opt">);</span>
        <span class="hl kwa">switch</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Attribute<span class="hl opt">.</span>ctx<span class="hl opt">) {</span>
        <span class="hl kwa">case</span> AugLoad<span class="hl opt">:</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> DUP_TOP<span class="hl opt">);</span>
            <span class="hl com">/* Fall through to load */</span>
        <span class="hl kwa">case</span> Load<span class="hl opt">:</span>
            <span class="hl kwd">ADDOP_NAME</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_ATTR<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Attribute<span class="hl opt">.</span>attr<span class="hl opt">,</span> names<span class="hl opt">);</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> AugStore<span class="hl opt">:</span>
            <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> ROT_TWO<span class="hl opt">);</span>
            <span class="hl com">/* Fall through to save */</span>
        <span class="hl kwa">case</span> Store<span class="hl opt">:</span>
            <span class="hl kwd">ADDOP_NAME</span><span class="hl opt">(</span>c<span class="hl opt">,</span> STORE_ATTR<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Attribute<span class="hl opt">.</span>attr<span class="hl opt">,</span> names<span class="hl opt">);</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Del<span class="hl opt">:</span>
            <span class="hl kwd">ADDOP_NAME</span><span class="hl opt">(</span>c<span class="hl opt">,</span> DELETE_ATTR<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Attribute<span class="hl opt">.</span>attr<span class="hl opt">,</span> names<span class="hl opt">);</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Param<span class="hl opt">:</span>
        <span class="hl kwa">default</span><span class="hl opt">:</span>
            <span class="hl kwd">PyErr_SetString</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                            <span class="hl str">&quot;param invalid in attribute expression&quot;</span><span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Subscript_kind<span class="hl opt">:</span>
        <span class="hl kwa">switch</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>ctx<span class="hl opt">) {</span>
        <span class="hl kwa">case</span> AugLoad<span class="hl opt">:</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>value<span class="hl opt">);</span>
            <span class="hl kwd">VISIT_SLICE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>slice<span class="hl opt">,</span> AugLoad<span class="hl opt">);</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Load<span class="hl opt">:</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>value<span class="hl opt">);</span>
            <span class="hl kwd">VISIT_SLICE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>slice<span class="hl opt">,</span> Load<span class="hl opt">);</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> AugStore<span class="hl opt">:</span>
            <span class="hl kwd">VISIT_SLICE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>slice<span class="hl opt">,</span> AugStore<span class="hl opt">);</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Store<span class="hl opt">:</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>value<span class="hl opt">);</span>
            <span class="hl kwd">VISIT_SLICE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>slice<span class="hl opt">,</span> Store<span class="hl opt">);</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Del<span class="hl opt">:</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>value<span class="hl opt">);</span>
            <span class="hl kwd">VISIT_SLICE</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>slice<span class="hl opt">,</span> Del<span class="hl opt">);</span>
            <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Param<span class="hl opt">:</span>
        <span class="hl kwa">default</span><span class="hl opt">:</span>
            <span class="hl kwd">PyErr_SetString</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                <span class="hl str">&quot;param invalid in subscript expression&quot;</span><span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Starred_kind<span class="hl opt">:</span>
        <span class="hl kwa">switch</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Starred<span class="hl opt">.</span>ctx<span class="hl opt">) {</span>
        <span class="hl kwa">case</span> Store<span class="hl opt">:</span>
            <span class="hl com">/* In all legitimate cases, the Starred node was already replaced</span>
<span class="hl com">             * by compiler_list/compiler_tuple. XXX: is that okay? */</span>
            <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span>
                <span class="hl str">&quot;starred assignment target must be in a list or tuple&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">default</span><span class="hl opt">:</span>
            <span class="hl kwa">return</span> <span class="hl kwd">compiler_error</span><span class="hl opt">(</span>c<span class="hl opt">,</span>
                <span class="hl str">&quot;can use starred expression only as assignment target&quot;</span><span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Name_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Name<span class="hl opt">.</span>id<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Name<span class="hl opt">.</span>ctx<span class="hl opt">);</span>
    <span class="hl com">/* child nodes of List and Tuple will have expr_context set */</span>
    <span class="hl kwa">case</span> List_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_list</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Tuple_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_tuple</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_augassign</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> stmt_ty s<span class="hl opt">)</span>
<span class="hl opt">{</span>
    expr_ty e <span class="hl opt">=</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>AugAssign<span class="hl opt">.</span>target<span class="hl opt">;</span>
    expr_ty auge<span class="hl opt">;</span>

    <span class="hl kwa">assert</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> AugAssign_kind<span class="hl opt">);</span>

    <span class="hl kwa">switch</span> <span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>kind<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> Attribute_kind<span class="hl opt">:</span>
        auge <span class="hl opt">=</span> <span class="hl kwd">Attribute</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Attribute<span class="hl opt">.</span>value<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Attribute<span class="hl opt">.</span>attr<span class="hl opt">,</span>
                         AugLoad<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>lineno<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>col_offset<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>c_arena<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>auge <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> auge<span class="hl opt">);</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>AugAssign<span class="hl opt">.</span>value<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl kwd">inplace_binop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>AugAssign<span class="hl opt">.</span>op<span class="hl opt">));</span>
        auge<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Attribute<span class="hl opt">.</span>ctx <span class="hl opt">=</span> AugStore<span class="hl opt">;</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> auge<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Subscript_kind<span class="hl opt">:</span>
        auge <span class="hl opt">=</span> <span class="hl kwd">Subscript</span><span class="hl opt">(</span>e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>value<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>slice<span class="hl opt">,</span>
                         AugLoad<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>lineno<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>col_offset<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>c_arena<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>auge <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> auge<span class="hl opt">);</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>AugAssign<span class="hl opt">.</span>value<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl kwd">inplace_binop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>AugAssign<span class="hl opt">.</span>op<span class="hl opt">));</span>
        auge<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Subscript<span class="hl opt">.</span>ctx <span class="hl opt">=</span> AugStore<span class="hl opt">;</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> auge<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Name_kind<span class="hl opt">:</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Name<span class="hl opt">.</span>id<span class="hl opt">,</span> Load<span class="hl opt">))</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>AugAssign<span class="hl opt">.</span>value<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> <span class="hl kwd">inplace_binop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>AugAssign<span class="hl opt">.</span>op<span class="hl opt">));</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_nameop</span><span class="hl opt">(</span>c<span class="hl opt">,</span> e<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Name<span class="hl opt">.</span>id<span class="hl opt">,</span> Store<span class="hl opt">);</span>
    <span class="hl kwa">default</span><span class="hl opt">:</span>
        <span class="hl kwd">PyErr_Format</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
            <span class="hl str">&quot;invalid node type (%d) for augmented assignment&quot;</span><span class="hl opt">,</span>
            e<span class="hl opt">-&gt;</span>kind<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_push_fblock</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">enum</span> fblocktype t<span class="hl opt">,</span> basicblock <span class="hl opt">*</span>b<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">struct</span> fblockinfo <span class="hl opt">*</span>f<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_nfblocks <span class="hl opt">&gt;=</span> CO_MAXBLOCKS<span class="hl opt">) {</span>
        <span class="hl kwd">PyErr_SetString</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                        <span class="hl str">&quot;too many statically nested blocks&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    f <span class="hl opt">= &amp;</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_fblock<span class="hl opt">[</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_nfblocks<span class="hl opt">++];</span>
    f<span class="hl opt">-&gt;</span>fb_type <span class="hl opt">=</span> t<span class="hl opt">;</span>
    f<span class="hl opt">-&gt;</span>fb_block <span class="hl opt">=</span> b<span class="hl opt">;</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static void</span>
<span class="hl kwd">compiler_pop_fblock</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">enum</span> fblocktype t<span class="hl opt">,</span> basicblock <span class="hl opt">*</span>b<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">struct</span> compiler_unit <span class="hl opt">*</span>u <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">;</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_nfblocks <span class="hl opt">&gt;</span> <span class="hl num">0</span><span class="hl opt">);</span>
    u<span class="hl opt">-&gt;</span>u_nfblocks<span class="hl opt">--;</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_fblock<span class="hl opt">[</span>u<span class="hl opt">-&gt;</span>u_nfblocks<span class="hl opt">].</span>fb_type <span class="hl opt">==</span> t<span class="hl opt">);</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_fblock<span class="hl opt">[</span>u<span class="hl opt">-&gt;</span>u_nfblocks<span class="hl opt">].</span>fb_block <span class="hl opt">==</span> b<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_in_loop</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">) {</span>
    <span class="hl kwb">int</span> i<span class="hl opt">;</span>
    <span class="hl kwb">struct</span> compiler_unit <span class="hl opt">*</span>u <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">;</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> u<span class="hl opt">-&gt;</span>u_nfblocks<span class="hl opt">; ++</span>i<span class="hl opt">) {</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>u<span class="hl opt">-&gt;</span>u_fblock<span class="hl opt">[</span>i<span class="hl opt">].</span>fb_type <span class="hl opt">==</span> LOOP<span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
<span class="hl opt">}</span>
<span class="hl com">/* Raises a SyntaxError and returns 0.</span>
<span class="hl com">   If something goes wrong, a different exception may be raised.</span>
<span class="hl com">*/</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_error</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">const char</span> <span class="hl opt">*</span>errstr<span class="hl opt">)</span>
<span class="hl opt">{</span>
    PyObject <span class="hl opt">*</span>loc<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>u <span class="hl opt">=</span> NULL<span class="hl opt">, *</span>v <span class="hl opt">=</span> NULL<span class="hl opt">;</span>

    loc <span class="hl opt">=</span> <span class="hl kwd">PyErr_ProgramText</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>c_filename<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>loc<span class="hl opt">) {</span>
        <span class="hl kwd">Py_INCREF</span><span class="hl opt">(</span>Py_None<span class="hl opt">);</span>
        loc <span class="hl opt">=</span> Py_None<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    u <span class="hl opt">=</span> <span class="hl kwd">Py_BuildValue</span><span class="hl opt">(</span><span class="hl str">&quot;(OiiO)&quot;</span><span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>c_filename_obj<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_lineno<span class="hl opt">,</span>
                      c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_col_offset<span class="hl opt">,</span> loc<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>u<span class="hl opt">)</span>
        <span class="hl kwa">goto</span> exit<span class="hl opt">;</span>
    v <span class="hl opt">=</span> <span class="hl kwd">Py_BuildValue</span><span class="hl opt">(</span><span class="hl str">&quot;(zO)&quot;</span><span class="hl opt">,</span> errstr<span class="hl opt">,</span> u<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>v<span class="hl opt">)</span>
        <span class="hl kwa">goto</span> exit<span class="hl opt">;</span>
    <span class="hl kwd">PyErr_SetObject</span><span class="hl opt">(</span>PyExc_SyntaxError<span class="hl opt">,</span> v<span class="hl opt">);</span>
 exit<span class="hl opt">:</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>loc<span class="hl opt">);</span>
    <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>u<span class="hl opt">);</span>
    <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>v<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_handle_subscr</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">const char</span> <span class="hl opt">*</span>kind<span class="hl opt">,</span>
                       expr_context_ty ctx<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> op <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl com">/* XXX this code is duplicated */</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>ctx<span class="hl opt">) {</span>
        <span class="hl kwa">case</span> AugLoad<span class="hl opt">:</span> <span class="hl com">/* fall through to Load */</span>
        <span class="hl kwa">case</span> Load<span class="hl opt">:</span>    op <span class="hl opt">=</span> BINARY_SUBSCR<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> AugStore<span class="hl opt">:</span><span class="hl com">/* fall through to Store */</span>
        <span class="hl kwa">case</span> Store<span class="hl opt">:</span>   op <span class="hl opt">=</span> STORE_SUBSCR<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Del<span class="hl opt">:</span>     op <span class="hl opt">=</span> DELETE_SUBSCR<span class="hl opt">;</span> <span class="hl kwa">break</span><span class="hl opt">;</span>
        <span class="hl kwa">case</span> Param<span class="hl opt">:</span>
            <span class="hl kwd">PyErr_Format</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                         <span class="hl str">&quot;invalid %s kind %d in subscript</span><span class="hl esc">\n</span><span class="hl str">&quot;</span><span class="hl opt">,</span>
                         kind<span class="hl opt">,</span> ctx<span class="hl opt">);</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>ctx <span class="hl opt">==</span> AugLoad<span class="hl opt">) {</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> DUP_TOP_TWO<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else if</span> <span class="hl opt">(</span>ctx <span class="hl opt">==</span> AugStore<span class="hl opt">) {</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> ROT_THREE<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> op<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_slice</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> slice_ty s<span class="hl opt">,</span> expr_context_ty ctx<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> n <span class="hl opt">=</span> <span class="hl num">2</span><span class="hl opt">;</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>kind <span class="hl opt">==</span> Slice_kind<span class="hl opt">);</span>

    <span class="hl com">/* only handles the cases where BUILD_SLICE is emitted */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Slice<span class="hl opt">.</span>lower<span class="hl opt">) {</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Slice<span class="hl opt">.</span>lower<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else</span> <span class="hl opt">{</span>
        <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> consts<span class="hl opt">);</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Slice<span class="hl opt">.</span>upper<span class="hl opt">) {</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Slice<span class="hl opt">.</span>upper<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else</span> <span class="hl opt">{</span>
        <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> consts<span class="hl opt">);</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Slice<span class="hl opt">.</span>step<span class="hl opt">) {</span>
        n<span class="hl opt">++;</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Slice<span class="hl opt">.</span>step<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> BUILD_SLICE<span class="hl opt">,</span> n<span class="hl opt">);</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_visit_nested_slice</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> slice_ty s<span class="hl opt">,</span>
                            expr_context_ty ctx<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>kind<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> Slice_kind<span class="hl opt">:</span>
        <span class="hl kwa">return</span> <span class="hl kwd">compiler_slice</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">,</span> ctx<span class="hl opt">);</span>
    <span class="hl kwa">case</span> Index_kind<span class="hl opt">:</span>
        <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Index<span class="hl opt">.</span>value<span class="hl opt">);</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> ExtSlice_kind<span class="hl opt">:</span>
    <span class="hl kwa">default</span><span class="hl opt">:</span>
        <span class="hl kwd">PyErr_SetString</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                        <span class="hl str">&quot;extended slice invalid in nested slice&quot;</span><span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compiler_visit_slice</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> slice_ty s<span class="hl opt">,</span> expr_context_ty ctx<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">char</span> <span class="hl opt">*</span> kindname <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    <span class="hl kwa">switch</span> <span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>kind<span class="hl opt">) {</span>
    <span class="hl kwa">case</span> Index_kind<span class="hl opt">:</span>
        kindname <span class="hl opt">=</span> <span class="hl str">&quot;index&quot;</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>ctx <span class="hl opt">!=</span> AugStore<span class="hl opt">) {</span>
            <span class="hl kwd">VISIT</span><span class="hl opt">(</span>c<span class="hl opt">,</span> expr<span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>Index<span class="hl opt">.</span>value<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> Slice_kind<span class="hl opt">:</span>
        kindname <span class="hl opt">=</span> <span class="hl str">&quot;slice&quot;</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>ctx <span class="hl opt">!=</span> AugStore<span class="hl opt">) {</span>
            <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_slice</span><span class="hl opt">(</span>c<span class="hl opt">,</span> s<span class="hl opt">,</span> ctx<span class="hl opt">))</span>
                <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">case</span> ExtSlice_kind<span class="hl opt">:</span>
        kindname <span class="hl opt">=</span> <span class="hl str">&quot;extended slice&quot;</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>ctx <span class="hl opt">!=</span> AugStore<span class="hl opt">) {</span>
            <span class="hl kwb">int</span> i<span class="hl opt">,</span> n <span class="hl opt">=</span> <span class="hl kwd">asdl_seq_LEN</span><span class="hl opt">(</span>s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ExtSlice<span class="hl opt">.</span>dims<span class="hl opt">);</span>
            <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> n<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
                slice_ty sub <span class="hl opt">= (</span>slice_ty<span class="hl opt">)</span><span class="hl kwd">asdl_seq_GET</span><span class="hl opt">(</span>
                    s<span class="hl opt">-&gt;</span>v<span class="hl opt">.</span>ExtSlice<span class="hl opt">.</span>dims<span class="hl opt">,</span> i<span class="hl opt">);</span>
                <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">compiler_visit_nested_slice</span><span class="hl opt">(</span>c<span class="hl opt">,</span> sub<span class="hl opt">,</span> ctx<span class="hl opt">))</span>
                    <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
            <span class="hl opt">}</span>
            <span class="hl kwd">ADDOP_I</span><span class="hl opt">(</span>c<span class="hl opt">,</span> BUILD_TUPLE<span class="hl opt">,</span> n<span class="hl opt">);</span>
        <span class="hl opt">}</span>
        <span class="hl kwa">break</span><span class="hl opt">;</span>
    <span class="hl kwa">default</span><span class="hl opt">:</span>
        <span class="hl kwd">PyErr_Format</span><span class="hl opt">(</span>PyExc_SystemError<span class="hl opt">,</span>
                     <span class="hl str">&quot;invalid subscript kind %d&quot;</span><span class="hl opt">,</span> s<span class="hl opt">-&gt;</span>kind<span class="hl opt">);</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl kwd">compiler_handle_subscr</span><span class="hl opt">(</span>c<span class="hl opt">,</span> kindname<span class="hl opt">,</span> ctx<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl com">/* End of the compiler section, beginning of the assembler section */</span>

<span class="hl com">/* do depth-first search of basic block graph, starting with block.</span>
<span class="hl com">   post records the block indices in post-order.</span>
<span class="hl com"></span>
<span class="hl com">   XXX must handle implicit jumps from one block to next</span>
<span class="hl com">*/</span>

<span class="hl kwb">struct</span> assembler <span class="hl opt">{</span>
    PyObject <span class="hl opt">*</span>a_bytecode<span class="hl opt">;</span>  <span class="hl com">/* string containing bytecode */</span>
    <span class="hl kwb">int</span> a_offset<span class="hl opt">;</span>              <span class="hl com">/* offset into bytecode */</span>
    <span class="hl kwb">int</span> a_nblocks<span class="hl opt">;</span>             <span class="hl com">/* number of reachable blocks */</span>
    basicblock <span class="hl opt">**</span>a_postorder<span class="hl opt">;</span> <span class="hl com">/* list of blocks in dfs postorder */</span>
    PyObject <span class="hl opt">*</span>a_lnotab<span class="hl opt">;</span>    <span class="hl com">/* string containing lnotab */</span>
    <span class="hl kwb">int</span> a_lnotab_off<span class="hl opt">;</span>      <span class="hl com">/* offset into lnotab */</span>
    <span class="hl kwb">int</span> a_lineno<span class="hl opt">;</span>              <span class="hl com">/* last lineno of emitted instruction */</span>
    <span class="hl kwb">int</span> a_lineno_off<span class="hl opt">;</span>      <span class="hl com">/* bytecode offset of last lineno */</span>
<span class="hl opt">};</span>

<span class="hl kwb">static void</span>
<span class="hl kwd">dfs</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> basicblock <span class="hl opt">*</span>b<span class="hl opt">,</span> <span class="hl kwb">struct</span> assembler <span class="hl opt">*</span>a<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> i<span class="hl opt">;</span>
    <span class="hl kwb">struct</span> instr <span class="hl opt">*</span>instr <span class="hl opt">=</span> NULL<span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>b<span class="hl opt">-&gt;</span>b_seen<span class="hl opt">)</span>
        <span class="hl kwa">return</span><span class="hl opt">;</span>
    b<span class="hl opt">-&gt;</span>b_seen <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>b<span class="hl opt">-&gt;</span>b_next <span class="hl opt">!=</span> NULL<span class="hl opt">)</span>
        <span class="hl kwd">dfs</span><span class="hl opt">(</span>c<span class="hl opt">,</span> b<span class="hl opt">-&gt;</span>b_next<span class="hl opt">,</span> a<span class="hl opt">);</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> b<span class="hl opt">-&gt;</span>b_iused<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
        instr <span class="hl opt">= &amp;</span>b<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">[</span>i<span class="hl opt">];</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>instr<span class="hl opt">-&gt;</span>i_jrel <span class="hl opt">||</span> instr<span class="hl opt">-&gt;</span>i_jabs<span class="hl opt">)</span>
            <span class="hl kwd">dfs</span><span class="hl opt">(</span>c<span class="hl opt">,</span> instr<span class="hl opt">-&gt;</span>i_target<span class="hl opt">,</span> a<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    a<span class="hl opt">-&gt;</span>a_postorder<span class="hl opt">[</span>a<span class="hl opt">-&gt;</span>a_nblocks<span class="hl opt">++] =</span> b<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">stackdepth_walk</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> basicblock <span class="hl opt">*</span>b<span class="hl opt">,</span> <span class="hl kwb">int</span> depth<span class="hl opt">,</span> <span class="hl kwb">int</span> maxdepth<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> target_depth<span class="hl opt">;</span>
    <span class="hl kwb">struct</span> instr <span class="hl opt">*</span>instr<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>b<span class="hl opt">-&gt;</span>b_seen <span class="hl opt">||</span> b<span class="hl opt">-&gt;</span>b_startdepth <span class="hl opt">&gt;=</span> depth<span class="hl opt">)</span>
        <span class="hl kwa">return</span> maxdepth<span class="hl opt">;</span>
    b<span class="hl opt">-&gt;</span>b_seen <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
    b<span class="hl opt">-&gt;</span>b_startdepth <span class="hl opt">=</span> depth<span class="hl opt">;</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> b<span class="hl opt">-&gt;</span>b_iused<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
        instr <span class="hl opt">= &amp;</span>b<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">[</span>i<span class="hl opt">];</span>
        depth <span class="hl opt">+=</span> <span class="hl kwd">opcode_stack_effect</span><span class="hl opt">(</span>instr<span class="hl opt">-&gt;</span>i_opcode<span class="hl opt">,</span> instr<span class="hl opt">-&gt;</span>i_oparg<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>depth <span class="hl opt">&gt;</span> maxdepth<span class="hl opt">)</span>
            maxdepth <span class="hl opt">=</span> depth<span class="hl opt">;</span>
        <span class="hl kwa">assert</span><span class="hl opt">(</span>depth <span class="hl opt">&gt;=</span> <span class="hl num">0</span><span class="hl opt">);</span> <span class="hl com">/* invalid code or bug in stackdepth() */</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>instr<span class="hl opt">-&gt;</span>i_jrel <span class="hl opt">||</span> instr<span class="hl opt">-&gt;</span>i_jabs<span class="hl opt">) {</span>
            target_depth <span class="hl opt">=</span> depth<span class="hl opt">;</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span>instr<span class="hl opt">-&gt;</span>i_opcode <span class="hl opt">==</span> FOR_ITER<span class="hl opt">) {</span>
                target_depth <span class="hl opt">=</span> depth<span class="hl opt">-</span><span class="hl num">2</span><span class="hl opt">;</span>
            <span class="hl opt">}</span> <span class="hl kwa">else if</span> <span class="hl opt">(</span>instr<span class="hl opt">-&gt;</span>i_opcode <span class="hl opt">==</span> SETUP_FINALLY <span class="hl opt">||</span>
                       instr<span class="hl opt">-&gt;</span>i_opcode <span class="hl opt">==</span> SETUP_EXCEPT<span class="hl opt">) {</span>
                target_depth <span class="hl opt">=</span> depth<span class="hl opt">+</span><span class="hl num">3</span><span class="hl opt">;</span>
                <span class="hl kwa">if</span> <span class="hl opt">(</span>target_depth <span class="hl opt">&gt;</span> maxdepth<span class="hl opt">)</span>
                    maxdepth <span class="hl opt">=</span> target_depth<span class="hl opt">;</span>
            <span class="hl opt">}</span>
            maxdepth <span class="hl opt">=</span> <span class="hl kwd">stackdepth_walk</span><span class="hl opt">(</span>c<span class="hl opt">,</span> instr<span class="hl opt">-&gt;</span>i_target<span class="hl opt">,</span>
                                       target_depth<span class="hl opt">,</span> maxdepth<span class="hl opt">);</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span>instr<span class="hl opt">-&gt;</span>i_opcode <span class="hl opt">==</span> JUMP_ABSOLUTE <span class="hl opt">||</span>
                instr<span class="hl opt">-&gt;</span>i_opcode <span class="hl opt">==</span> JUMP_FORWARD<span class="hl opt">) {</span>
                <span class="hl kwa">goto</span> out<span class="hl opt">;</span> <span class="hl com">/* remaining code is dead */</span>
            <span class="hl opt">}</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>b<span class="hl opt">-&gt;</span>b_next<span class="hl opt">)</span>
        maxdepth <span class="hl opt">=</span> <span class="hl kwd">stackdepth_walk</span><span class="hl opt">(</span>c<span class="hl opt">,</span> b<span class="hl opt">-&gt;</span>b_next<span class="hl opt">,</span> depth<span class="hl opt">,</span> maxdepth<span class="hl opt">);</span>
out<span class="hl opt">:</span>
    b<span class="hl opt">-&gt;</span>b_seen <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">return</span> maxdepth<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl com">/* Find the flow path that needs the largest stack.  We assume that</span>
<span class="hl com"> * cycles in the flow graph have no net effect on the stack depth.</span>
<span class="hl com"> */</span>
<span class="hl kwb">static int</span>
<span class="hl kwd">stackdepth</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>b<span class="hl opt">, *</span>entryblock<span class="hl opt">;</span>
    entryblock <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>b <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_blocks<span class="hl opt">;</span> b <span class="hl opt">!=</span> NULL<span class="hl opt">;</span> b <span class="hl opt">=</span> b<span class="hl opt">-&gt;</span>b_list<span class="hl opt">) {</span>
        b<span class="hl opt">-&gt;</span>b_seen <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
        b<span class="hl opt">-&gt;</span>b_startdepth <span class="hl opt">=</span> INT_MIN<span class="hl opt">;</span>
        entryblock <span class="hl opt">=</span> b<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>entryblock<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">return</span> <span class="hl kwd">stackdepth_walk</span><span class="hl opt">(</span>c<span class="hl opt">,</span> entryblock<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">assemble_init</span><span class="hl opt">(</span><span class="hl kwb">struct</span> assembler <span class="hl opt">*</span>a<span class="hl opt">,</span> <span class="hl kwb">int</span> nblocks<span class="hl opt">,</span> <span class="hl kwb">int</span> firstlineno<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwd">memset</span><span class="hl opt">(</span>a<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">,</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span><span class="hl kwb">struct</span> assembler<span class="hl opt">));</span>
    a<span class="hl opt">-&gt;</span>a_lineno <span class="hl opt">=</span> firstlineno<span class="hl opt">;</span>
    a<span class="hl opt">-&gt;</span>a_bytecode <span class="hl opt">=</span> <span class="hl kwd">PyBytes_FromStringAndSize</span><span class="hl opt">(</span>NULL<span class="hl opt">,</span> DEFAULT_CODE_SIZE<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>a<span class="hl opt">-&gt;</span>a_bytecode<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    a<span class="hl opt">-&gt;</span>a_lnotab <span class="hl opt">=</span> <span class="hl kwd">PyBytes_FromStringAndSize</span><span class="hl opt">(</span>NULL<span class="hl opt">,</span> DEFAULT_LNOTAB_SIZE<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>nblocks <span class="hl opt">&gt;</span> PY_SIZE_MAX <span class="hl opt">/</span> <span class="hl kwa">sizeof</span><span class="hl opt">(</span>basicblock <span class="hl opt">*)) {</span>
        <span class="hl kwd">PyErr_NoMemory</span><span class="hl opt">();</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    a<span class="hl opt">-&gt;</span>a_postorder <span class="hl opt">= (</span>basicblock <span class="hl opt">**)</span><span class="hl kwd">PyObject_Malloc</span><span class="hl opt">(</span>
                                        <span class="hl kwa">sizeof</span><span class="hl opt">(</span>basicblock <span class="hl opt">*) *</span> nblocks<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>a<span class="hl opt">-&gt;</span>a_postorder<span class="hl opt">) {</span>
        <span class="hl kwd">PyErr_NoMemory</span><span class="hl opt">();</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static void</span>
<span class="hl kwd">assemble_free</span><span class="hl opt">(</span><span class="hl kwb">struct</span> assembler <span class="hl opt">*</span>a<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_bytecode<span class="hl opt">);</span>
    <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_postorder<span class="hl opt">)</span>
        <span class="hl kwd">PyObject_Free</span><span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_postorder<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl com">/* Return the size of a basic block in bytes. */</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">instrsize</span><span class="hl opt">(</span><span class="hl kwb">struct</span> instr <span class="hl opt">*</span>instr<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>instr<span class="hl opt">-&gt;</span>i_hasarg<span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>               <span class="hl com">/* 1 byte for the opcode*/</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>instr<span class="hl opt">-&gt;</span>i_oparg <span class="hl opt">&gt;</span> <span class="hl num">0xffff</span><span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">6</span><span class="hl opt">;</span>               <span class="hl com">/* 1 (opcode) + 1 (EXTENDED_ARG opcode) + 2 (oparg) + 2(oparg extended) */</span>
    <span class="hl kwa">return</span> <span class="hl num">3</span><span class="hl opt">;</span>                   <span class="hl com">/* 1 (opcode) + 2 (oparg) */</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">blocksize</span><span class="hl opt">(</span>basicblock <span class="hl opt">*</span>b<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> i<span class="hl opt">;</span>
    <span class="hl kwb">int</span> size <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>

    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> b<span class="hl opt">-&gt;</span>b_iused<span class="hl opt">;</span> i<span class="hl opt">++)</span>
        size <span class="hl opt">+=</span> <span class="hl kwd">instrsize</span><span class="hl opt">(&amp;</span>b<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">[</span>i<span class="hl opt">]);</span>
    <span class="hl kwa">return</span> size<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl com">/* Appends a pair to the end of the line number table, a_lnotab, representing</span>
<span class="hl com">   the instruction's bytecode offset and line number.  See</span>
<span class="hl com">   Objects/lnotab_notes.txt for the description of the line number table. */</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">assemble_lnotab</span><span class="hl opt">(</span><span class="hl kwb">struct</span> assembler <span class="hl opt">*</span>a<span class="hl opt">,</span> <span class="hl kwb">struct</span> instr <span class="hl opt">*</span>i<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> d_bytecode<span class="hl opt">,</span> d_lineno<span class="hl opt">;</span>
    <span class="hl kwb">int</span> len<span class="hl opt">;</span>
    <span class="hl kwb">unsigned char</span> <span class="hl opt">*</span>lnotab<span class="hl opt">;</span>

    d_bytecode <span class="hl opt">=</span> a<span class="hl opt">-&gt;</span>a_offset <span class="hl opt">-</span> a<span class="hl opt">-&gt;</span>a_lineno_off<span class="hl opt">;</span>
    d_lineno <span class="hl opt">=</span> i<span class="hl opt">-&gt;</span>i_lineno <span class="hl opt">-</span> a<span class="hl opt">-&gt;</span>a_lineno<span class="hl opt">;</span>

    <span class="hl kwa">assert</span><span class="hl opt">(</span>d_bytecode <span class="hl opt">&gt;=</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>d_lineno <span class="hl opt">&gt;=</span> <span class="hl num">0</span><span class="hl opt">);</span>

    <span class="hl kwa">if</span><span class="hl opt">(</span>d_bytecode <span class="hl opt">==</span> <span class="hl num">0</span> <span class="hl opt">&amp;&amp;</span> d_lineno <span class="hl opt">==</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span>d_bytecode <span class="hl opt">&gt;</span> <span class="hl num">255</span><span class="hl opt">) {</span>
        <span class="hl kwb">int</span> j<span class="hl opt">,</span> nbytes<span class="hl opt">,</span> ncodes <span class="hl opt">=</span> d_bytecode <span class="hl opt">/</span> <span class="hl num">255</span><span class="hl opt">;</span>
        nbytes <span class="hl opt">=</span> a<span class="hl opt">-&gt;</span>a_lnotab_off <span class="hl opt">+</span> <span class="hl num">2</span> <span class="hl opt">*</span> ncodes<span class="hl opt">;</span>
        len <span class="hl opt">=</span> <span class="hl kwd">PyBytes_GET_SIZE</span><span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>nbytes <span class="hl opt">&gt;=</span> len<span class="hl opt">) {</span>
            <span class="hl kwa">if</span> <span class="hl opt">((</span>len <span class="hl opt">&lt;=</span> INT_MAX <span class="hl opt">/</span> <span class="hl num">2</span><span class="hl opt">) &amp;&amp; (</span>len <span class="hl opt">*</span> <span class="hl num">2</span> <span class="hl opt">&lt;</span> nbytes<span class="hl opt">))</span>
                len <span class="hl opt">=</span> nbytes<span class="hl opt">;</span>
            <span class="hl kwa">else if</span> <span class="hl opt">(</span>len <span class="hl opt">&lt;=</span> INT_MAX <span class="hl opt">/</span> <span class="hl num">2</span><span class="hl opt">)</span>
                len <span class="hl opt">*=</span> <span class="hl num">2</span><span class="hl opt">;</span>
            <span class="hl kwa">else</span> <span class="hl opt">{</span>
                <span class="hl kwd">PyErr_NoMemory</span><span class="hl opt">();</span>
                <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
            <span class="hl opt">}</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">_PyBytes_Resize</span><span class="hl opt">(&amp;</span>a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">,</span> len<span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
                <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        lnotab <span class="hl opt">= (</span><span class="hl kwb">unsigned char</span> <span class="hl opt">*)</span>
                   <span class="hl kwd">PyBytes_AS_STRING</span><span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">) +</span> a<span class="hl opt">-&gt;</span>a_lnotab_off<span class="hl opt">;</span>
        <span class="hl kwa">for</span> <span class="hl opt">(</span>j <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> j <span class="hl opt">&lt;</span> ncodes<span class="hl opt">;</span> j<span class="hl opt">++) {</span>
            <span class="hl opt">*</span>lnotab<span class="hl opt">++ =</span> <span class="hl num">255</span><span class="hl opt">;</span>
            <span class="hl opt">*</span>lnotab<span class="hl opt">++ =</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        d_bytecode <span class="hl opt">-=</span> ncodes <span class="hl opt">*</span> <span class="hl num">255</span><span class="hl opt">;</span>
        a<span class="hl opt">-&gt;</span>a_lnotab_off <span class="hl opt">+=</span> ncodes <span class="hl opt">*</span> <span class="hl num">2</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">assert</span><span class="hl opt">(</span>d_bytecode <span class="hl opt">&lt;=</span> <span class="hl num">255</span><span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>d_lineno <span class="hl opt">&gt;</span> <span class="hl num">255</span><span class="hl opt">) {</span>
        <span class="hl kwb">int</span> j<span class="hl opt">,</span> nbytes<span class="hl opt">,</span> ncodes <span class="hl opt">=</span> d_lineno <span class="hl opt">/</span> <span class="hl num">255</span><span class="hl opt">;</span>
        nbytes <span class="hl opt">=</span> a<span class="hl opt">-&gt;</span>a_lnotab_off <span class="hl opt">+</span> <span class="hl num">2</span> <span class="hl opt">*</span> ncodes<span class="hl opt">;</span>
        len <span class="hl opt">=</span> <span class="hl kwd">PyBytes_GET_SIZE</span><span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>nbytes <span class="hl opt">&gt;=</span> len<span class="hl opt">) {</span>
            <span class="hl kwa">if</span> <span class="hl opt">((</span>len <span class="hl opt">&lt;=</span> INT_MAX <span class="hl opt">/</span> <span class="hl num">2</span><span class="hl opt">) &amp;&amp;</span> len <span class="hl opt">*</span> <span class="hl num">2</span> <span class="hl opt">&lt;</span> nbytes<span class="hl opt">)</span>
                len <span class="hl opt">=</span> nbytes<span class="hl opt">;</span>
            <span class="hl kwa">else if</span> <span class="hl opt">(</span>len <span class="hl opt">&lt;=</span> INT_MAX <span class="hl opt">/</span> <span class="hl num">2</span><span class="hl opt">)</span>
                len <span class="hl opt">*=</span> <span class="hl num">2</span><span class="hl opt">;</span>
            <span class="hl kwa">else</span> <span class="hl opt">{</span>
                <span class="hl kwd">PyErr_NoMemory</span><span class="hl opt">();</span>
                <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
            <span class="hl opt">}</span>
            <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">_PyBytes_Resize</span><span class="hl opt">(&amp;</span>a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">,</span> len<span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
                <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        lnotab <span class="hl opt">= (</span><span class="hl kwb">unsigned char</span> <span class="hl opt">*)</span>
                   <span class="hl kwd">PyBytes_AS_STRING</span><span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">) +</span> a<span class="hl opt">-&gt;</span>a_lnotab_off<span class="hl opt">;</span>
        <span class="hl opt">*</span>lnotab<span class="hl opt">++ =</span> d_bytecode<span class="hl opt">;</span>
        <span class="hl opt">*</span>lnotab<span class="hl opt">++ =</span> <span class="hl num">255</span><span class="hl opt">;</span>
        d_bytecode <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">for</span> <span class="hl opt">(</span>j <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span> j <span class="hl opt">&lt;</span> ncodes<span class="hl opt">;</span> j<span class="hl opt">++) {</span>
            <span class="hl opt">*</span>lnotab<span class="hl opt">++ =</span> <span class="hl num">0</span><span class="hl opt">;</span>
            <span class="hl opt">*</span>lnotab<span class="hl opt">++ =</span> <span class="hl num">255</span><span class="hl opt">;</span>
        <span class="hl opt">}</span>
        d_lineno <span class="hl opt">-=</span> ncodes <span class="hl opt">*</span> <span class="hl num">255</span><span class="hl opt">;</span>
        a<span class="hl opt">-&gt;</span>a_lnotab_off <span class="hl opt">+=</span> ncodes <span class="hl opt">*</span> <span class="hl num">2</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>

    len <span class="hl opt">=</span> <span class="hl kwd">PyBytes_GET_SIZE</span><span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_lnotab_off <span class="hl opt">+</span> <span class="hl num">2</span> <span class="hl opt">&gt;=</span> len<span class="hl opt">) {</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">_PyBytes_Resize</span><span class="hl opt">(&amp;</span>a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">,</span> len <span class="hl opt">*</span> <span class="hl num">2</span><span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    lnotab <span class="hl opt">= (</span><span class="hl kwb">unsigned char</span> <span class="hl opt">*)</span>
                    <span class="hl kwd">PyBytes_AS_STRING</span><span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">) +</span> a<span class="hl opt">-&gt;</span>a_lnotab_off<span class="hl opt">;</span>

    a<span class="hl opt">-&gt;</span>a_lnotab_off <span class="hl opt">+=</span> <span class="hl num">2</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>d_bytecode<span class="hl opt">) {</span>
        <span class="hl opt">*</span>lnotab<span class="hl opt">++ =</span> d_bytecode<span class="hl opt">;</span>
        <span class="hl opt">*</span>lnotab<span class="hl opt">++ =</span> d_lineno<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">else</span> <span class="hl opt">{</span>      <span class="hl com">/* First line of a block; def stmt, etc. */</span>
        <span class="hl opt">*</span>lnotab<span class="hl opt">++ =</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl opt">*</span>lnotab<span class="hl opt">++ =</span> d_lineno<span class="hl opt">;</span>
    <span class="hl opt">}</span>
    a<span class="hl opt">-&gt;</span>a_lineno <span class="hl opt">=</span> i<span class="hl opt">-&gt;</span>i_lineno<span class="hl opt">;</span>
    a<span class="hl opt">-&gt;</span>a_lineno_off <span class="hl opt">=</span> a<span class="hl opt">-&gt;</span>a_offset<span class="hl opt">;</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl com">/* assemble_emit()</span>
<span class="hl com">   Extend the bytecode with a new instruction.</span>
<span class="hl com">   Update lnotab if necessary.</span>
<span class="hl com">*/</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">assemble_emit</span><span class="hl opt">(</span><span class="hl kwb">struct</span> assembler <span class="hl opt">*</span>a<span class="hl opt">,</span> <span class="hl kwb">struct</span> instr <span class="hl opt">*</span>i<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">int</span> size<span class="hl opt">,</span> arg <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">,</span> ext <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    Py_ssize_t len <span class="hl opt">=</span> <span class="hl kwd">PyBytes_GET_SIZE</span><span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_bytecode<span class="hl opt">);</span>
    <span class="hl kwb">char</span> <span class="hl opt">*</span>code<span class="hl opt">;</span>

    size <span class="hl opt">=</span> <span class="hl kwd">instrsize</span><span class="hl opt">(</span>i<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>i<span class="hl opt">-&gt;</span>i_hasarg<span class="hl opt">) {</span>
        arg <span class="hl opt">=</span> i<span class="hl opt">-&gt;</span>i_oparg<span class="hl opt">;</span>
        ext <span class="hl opt">=</span> arg <span class="hl opt">&gt;&gt;</span> <span class="hl num">16</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>i<span class="hl opt">-&gt;</span>i_lineno <span class="hl opt">&amp;&amp; !</span><span class="hl kwd">assemble_lnotab</span><span class="hl opt">(</span>a<span class="hl opt">,</span> i<span class="hl opt">))</span>
        <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_offset <span class="hl opt">+</span> size <span class="hl opt">&gt;=</span> len<span class="hl opt">) {</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>len <span class="hl opt">&gt;</span> PY_SSIZE_T_MAX <span class="hl opt">/</span> <span class="hl num">2</span><span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">_PyBytes_Resize</span><span class="hl opt">(&amp;</span>a<span class="hl opt">-&gt;</span>a_bytecode<span class="hl opt">,</span> len <span class="hl opt">*</span> <span class="hl num">2</span><span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
            <span class="hl kwa">return</span> <span class="hl num">0</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    code <span class="hl opt">=</span> <span class="hl kwd">PyBytes_AS_STRING</span><span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_bytecode<span class="hl opt">) +</span> a<span class="hl opt">-&gt;</span>a_offset<span class="hl opt">;</span>
    a<span class="hl opt">-&gt;</span>a_offset <span class="hl opt">+=</span> size<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>size <span class="hl opt">==</span> <span class="hl num">6</span><span class="hl opt">) {</span>
        <span class="hl kwa">assert</span><span class="hl opt">(</span>i<span class="hl opt">-&gt;</span>i_hasarg<span class="hl opt">);</span>
        <span class="hl opt">*</span>code<span class="hl opt">++ = (</span><span class="hl kwb">char</span><span class="hl opt">)</span>EXTENDED_ARG<span class="hl opt">;</span>
        <span class="hl opt">*</span>code<span class="hl opt">++ =</span> ext <span class="hl opt">&amp;</span> <span class="hl num">0xff</span><span class="hl opt">;</span>
        <span class="hl opt">*</span>code<span class="hl opt">++ =</span> ext <span class="hl opt">&gt;&gt;</span> <span class="hl num">8</span><span class="hl opt">;</span>
        arg <span class="hl opt">&amp;=</span> <span class="hl num">0xffff</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl opt">*</span>code<span class="hl opt">++ =</span> i<span class="hl opt">-&gt;</span>i_opcode<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>i<span class="hl opt">-&gt;</span>i_hasarg<span class="hl opt">) {</span>
        <span class="hl kwa">assert</span><span class="hl opt">(</span>size <span class="hl opt">==</span> <span class="hl num">3</span> <span class="hl opt">||</span> size <span class="hl opt">==</span> <span class="hl num">6</span><span class="hl opt">);</span>
        <span class="hl opt">*</span>code<span class="hl opt">++ =</span> arg <span class="hl opt">&amp;</span> <span class="hl num">0xff</span><span class="hl opt">;</span>
        <span class="hl opt">*</span>code<span class="hl opt">++ =</span> arg <span class="hl opt">&gt;&gt;</span> <span class="hl num">8</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> <span class="hl num">1</span><span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static void</span>
<span class="hl kwd">assemble_jump_offsets</span><span class="hl opt">(</span><span class="hl kwb">struct</span> assembler <span class="hl opt">*</span>a<span class="hl opt">,</span> <span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>b<span class="hl opt">;</span>
    <span class="hl kwb">int</span> bsize<span class="hl opt">,</span> totsize<span class="hl opt">,</span> extended_arg_count <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">,</span> last_extended_arg_count<span class="hl opt">;</span>
    <span class="hl kwb">int</span> i<span class="hl opt">;</span>

    <span class="hl com">/* Compute the size of each block and fixup jump args.</span>
<span class="hl com">       Replace block pointer with position in bytecode. */</span>
    <span class="hl kwa">do</span> <span class="hl opt">{</span>
        totsize <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> a<span class="hl opt">-&gt;</span>a_nblocks <span class="hl opt">-</span> <span class="hl num">1</span><span class="hl opt">;</span> i <span class="hl opt">&gt;=</span> <span class="hl num">0</span><span class="hl opt">;</span> i<span class="hl opt">--) {</span>
            b <span class="hl opt">=</span> a<span class="hl opt">-&gt;</span>a_postorder<span class="hl opt">[</span>i<span class="hl opt">];</span>
            bsize <span class="hl opt">=</span> <span class="hl kwd">blocksize</span><span class="hl opt">(</span>b<span class="hl opt">);</span>
            b<span class="hl opt">-&gt;</span>b_offset <span class="hl opt">=</span> totsize<span class="hl opt">;</span>
            totsize <span class="hl opt">+=</span> bsize<span class="hl opt">;</span>
        <span class="hl opt">}</span>
        last_extended_arg_count <span class="hl opt">=</span> extended_arg_count<span class="hl opt">;</span>
        extended_arg_count <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
        <span class="hl kwa">for</span> <span class="hl opt">(</span>b <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_blocks<span class="hl opt">;</span> b <span class="hl opt">!=</span> NULL<span class="hl opt">;</span> b <span class="hl opt">=</span> b<span class="hl opt">-&gt;</span>b_list<span class="hl opt">) {</span>
            bsize <span class="hl opt">=</span> b<span class="hl opt">-&gt;</span>b_offset<span class="hl opt">;</span>
            <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> b<span class="hl opt">-&gt;</span>b_iused<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
                <span class="hl kwb">struct</span> instr <span class="hl opt">*</span>instr <span class="hl opt">= &amp;</span>b<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">[</span>i<span class="hl opt">];</span>
                <span class="hl com">/* Relative jumps are computed relative to</span>
<span class="hl com">                   the instruction pointer after fetching</span>
<span class="hl com">                   the jump instruction.</span>
<span class="hl com">                */</span>
                bsize <span class="hl opt">+=</span> <span class="hl kwd">instrsize</span><span class="hl opt">(</span>instr<span class="hl opt">);</span>
                <span class="hl kwa">if</span> <span class="hl opt">(</span>instr<span class="hl opt">-&gt;</span>i_jabs<span class="hl opt">)</span>
                    instr<span class="hl opt">-&gt;</span>i_oparg <span class="hl opt">=</span> instr<span class="hl opt">-&gt;</span>i_target<span class="hl opt">-&gt;</span>b_offset<span class="hl opt">;</span>
                <span class="hl kwa">else if</span> <span class="hl opt">(</span>instr<span class="hl opt">-&gt;</span>i_jrel<span class="hl opt">) {</span>
                    <span class="hl kwb">int</span> delta <span class="hl opt">=</span> instr<span class="hl opt">-&gt;</span>i_target<span class="hl opt">-&gt;</span>b_offset <span class="hl opt">-</span> bsize<span class="hl opt">;</span>
                    instr<span class="hl opt">-&gt;</span>i_oparg <span class="hl opt">=</span> delta<span class="hl opt">;</span>
                <span class="hl opt">}</span>
                <span class="hl kwa">else</span>
                    <span class="hl kwa">continue</span><span class="hl opt">;</span>
                <span class="hl kwa">if</span> <span class="hl opt">(</span>instr<span class="hl opt">-&gt;</span>i_oparg <span class="hl opt">&gt;</span> <span class="hl num">0xffff</span><span class="hl opt">)</span>
                    extended_arg_count<span class="hl opt">++;</span>
            <span class="hl opt">}</span>
        <span class="hl opt">}</span>

    <span class="hl com">/* XXX: This is an awful hack that could hurt performance, but</span>
<span class="hl com">        on the bright side it should work until we come up</span>
<span class="hl com">        with a better solution.</span>
<span class="hl com"></span>
<span class="hl com">        The issue is that in the first loop blocksize() is called</span>
<span class="hl com">        which calls instrsize() which requires i_oparg be set</span>
<span class="hl com">        appropriately.          There is a bootstrap problem because</span>
<span class="hl com">        i_oparg is calculated in the second loop above.</span>
<span class="hl com"></span>
<span class="hl com">        So we loop until we stop seeing new EXTENDED_ARGs.</span>
<span class="hl com">        The only EXTENDED_ARGs that could be popping up are</span>
<span class="hl com">        ones in jump instructions.  So this should converge</span>
<span class="hl com">        fairly quickly.</span>
<span class="hl com">    */</span>
    <span class="hl opt">}</span> <span class="hl kwa">while</span> <span class="hl opt">(</span>last_extended_arg_count <span class="hl opt">!=</span> extended_arg_count<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static</span> PyObject <span class="hl opt">*</span>
<span class="hl kwd">dict_keys_inorder</span><span class="hl opt">(</span>PyObject <span class="hl opt">*</span>dict<span class="hl opt">,</span> <span class="hl kwb">int</span> offset<span class="hl opt">)</span>
<span class="hl opt">{</span>
    PyObject <span class="hl opt">*</span>tuple<span class="hl opt">, *</span>k<span class="hl opt">, *</span>v<span class="hl opt">;</span>
    Py_ssize_t i<span class="hl opt">,</span> pos <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">,</span> size <span class="hl opt">=</span> <span class="hl kwd">PyDict_Size</span><span class="hl opt">(</span>dict<span class="hl opt">);</span>

    tuple <span class="hl opt">=</span> <span class="hl kwd">PyTuple_New</span><span class="hl opt">(</span>size<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>tuple <span class="hl opt">==</span> NULL<span class="hl opt">)</span>
        <span class="hl kwa">return</span> NULL<span class="hl opt">;</span>
    <span class="hl kwa">while</span> <span class="hl opt">(</span><span class="hl kwd">PyDict_Next</span><span class="hl opt">(</span>dict<span class="hl opt">, &amp;</span>pos<span class="hl opt">, &amp;</span>k<span class="hl opt">, &amp;</span>v<span class="hl opt">)) {</span>
        i <span class="hl opt">=</span> <span class="hl kwd">PyLong_AS_LONG</span><span class="hl opt">(</span>v<span class="hl opt">);</span>
        <span class="hl com">/* The keys of the dictionary are tuples. (see compiler_add_o)</span>
<span class="hl com">           The object we want is always first, though. */</span>
        k <span class="hl opt">=</span> <span class="hl kwd">PyTuple_GET_ITEM</span><span class="hl opt">(</span>k<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
        <span class="hl kwd">Py_INCREF</span><span class="hl opt">(</span>k<span class="hl opt">);</span>
        <span class="hl kwa">assert</span><span class="hl opt">((</span>i <span class="hl opt">-</span> offset<span class="hl opt">) &lt;</span> size<span class="hl opt">);</span>
        <span class="hl kwa">assert</span><span class="hl opt">((</span>i <span class="hl opt">-</span> offset<span class="hl opt">) &gt;=</span> <span class="hl num">0</span><span class="hl opt">);</span>
        <span class="hl kwd">PyTuple_SET_ITEM</span><span class="hl opt">(</span>tuple<span class="hl opt">,</span> i <span class="hl opt">-</span> offset<span class="hl opt">,</span> k<span class="hl opt">);</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">return</span> tuple<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static int</span>
<span class="hl kwd">compute_code_flags</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">)</span>
<span class="hl opt">{</span>
    PySTEntryObject <span class="hl opt">*</span>ste <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_ste<span class="hl opt">;</span>
    <span class="hl kwb">int</span> flags <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">,</span> n<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>ste<span class="hl opt">-&gt;</span>ste_type <span class="hl opt">!=</span> ModuleBlock<span class="hl opt">)</span>
        flags <span class="hl opt">|=</span> CO_NEWLOCALS<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>ste<span class="hl opt">-&gt;</span>ste_type <span class="hl opt">==</span> FunctionBlock<span class="hl opt">) {</span>
        <span class="hl kwa">if</span> <span class="hl opt">(!</span>ste<span class="hl opt">-&gt;</span>ste_unoptimized<span class="hl opt">)</span>
            flags <span class="hl opt">|=</span> CO_OPTIMIZED<span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>ste<span class="hl opt">-&gt;</span>ste_nested<span class="hl opt">)</span>
            flags <span class="hl opt">|=</span> CO_NESTED<span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>ste<span class="hl opt">-&gt;</span>ste_generator<span class="hl opt">)</span>
            flags <span class="hl opt">|=</span> CO_GENERATOR<span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>ste<span class="hl opt">-&gt;</span>ste_varargs<span class="hl opt">)</span>
            flags <span class="hl opt">|=</span> CO_VARARGS<span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>ste<span class="hl opt">-&gt;</span>ste_varkeywords<span class="hl opt">)</span>
            flags <span class="hl opt">|=</span> CO_VARKEYWORDS<span class="hl opt">;</span>
    <span class="hl opt">}</span>

    <span class="hl com">/* (Only) inherit compilerflags in PyCF_MASK */</span>
    flags <span class="hl opt">|= (</span>c<span class="hl opt">-&gt;</span>c_flags<span class="hl opt">-&gt;</span>cf_flags <span class="hl opt">&amp;</span> PyCF_MASK<span class="hl opt">);</span>

    n <span class="hl opt">=</span> <span class="hl kwd">PyDict_Size</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_freevars<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>n <span class="hl opt">&lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>n <span class="hl opt">==</span> <span class="hl num">0</span><span class="hl opt">) {</span>
        n <span class="hl opt">=</span> <span class="hl kwd">PyDict_Size</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_cellvars<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>n <span class="hl opt">&lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">return</span> <span class="hl opt">-</span><span class="hl num">1</span><span class="hl opt">;</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>n <span class="hl opt">==</span> <span class="hl num">0</span><span class="hl opt">) {</span>
        flags <span class="hl opt">|=</span> CO_NOFREE<span class="hl opt">;</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">return</span> flags<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl kwb">static</span> PyCodeObject <span class="hl opt">*</span>
<span class="hl kwd">makecode</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">struct</span> assembler <span class="hl opt">*</span>a<span class="hl opt">)</span>
<span class="hl opt">{</span>
    PyObject <span class="hl opt">*</span>tmp<span class="hl opt">;</span>
    PyCodeObject <span class="hl opt">*</span>co <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>consts <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>names <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>varnames <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>name <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>freevars <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>cellvars <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    PyObject <span class="hl opt">*</span>bytecode <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    <span class="hl kwb">int</span> nlocals<span class="hl opt">,</span> flags<span class="hl opt">;</span>

    tmp <span class="hl opt">=</span> <span class="hl kwd">dict_keys_inorder</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_consts<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>tmp<span class="hl opt">)</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    consts <span class="hl opt">=</span> <span class="hl kwd">PySequence_List</span><span class="hl opt">(</span>tmp<span class="hl opt">);</span> <span class="hl com">/* optimize_code requires a list */</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>tmp<span class="hl opt">);</span>

    names <span class="hl opt">=</span> <span class="hl kwd">dict_keys_inorder</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_names<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
    varnames <span class="hl opt">=</span> <span class="hl kwd">dict_keys_inorder</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_varnames<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>consts <span class="hl opt">|| !</span>names <span class="hl opt">|| !</span>varnames<span class="hl opt">)</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>

    cellvars <span class="hl opt">=</span> <span class="hl kwd">dict_keys_inorder</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_cellvars<span class="hl opt">,</span> <span class="hl num">0</span><span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>cellvars<span class="hl opt">)</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    freevars <span class="hl opt">=</span> <span class="hl kwd">dict_keys_inorder</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_freevars<span class="hl opt">,</span> <span class="hl kwd">PyTuple_Size</span><span class="hl opt">(</span>cellvars<span class="hl opt">));</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>freevars<span class="hl opt">)</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    nlocals <span class="hl opt">=</span> <span class="hl kwd">PyDict_Size</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_varnames<span class="hl opt">);</span>
    flags <span class="hl opt">=</span> <span class="hl kwd">compute_code_flags</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>flags <span class="hl opt">&lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>

    bytecode <span class="hl opt">=</span> <span class="hl kwd">PyCode_Optimize</span><span class="hl opt">(</span>a<span class="hl opt">-&gt;</span>a_bytecode<span class="hl opt">,</span> consts<span class="hl opt">,</span> names<span class="hl opt">,</span> a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>bytecode<span class="hl opt">)</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>

    tmp <span class="hl opt">=</span> <span class="hl kwd">PyList_AsTuple</span><span class="hl opt">(</span>consts<span class="hl opt">);</span> <span class="hl com">/* PyCode_New requires a tuple */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>tmp<span class="hl opt">)</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    <span class="hl kwd">Py_DECREF</span><span class="hl opt">(</span>consts<span class="hl opt">);</span>
    consts <span class="hl opt">=</span> tmp<span class="hl opt">;</span>

    co <span class="hl opt">=</span> <span class="hl kwd">PyCode_New</span><span class="hl opt">(</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_argcount<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_kwonlyargcount<span class="hl opt">,</span>
                    nlocals<span class="hl opt">,</span> <span class="hl kwd">stackdepth</span><span class="hl opt">(</span>c<span class="hl opt">),</span> flags<span class="hl opt">,</span>
                    bytecode<span class="hl opt">,</span> consts<span class="hl opt">,</span> names<span class="hl opt">,</span> varnames<span class="hl opt">,</span>
                    freevars<span class="hl opt">,</span> cellvars<span class="hl opt">,</span>
                    c<span class="hl opt">-&gt;</span>c_filename_obj<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_name<span class="hl opt">,</span>
                    c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_firstlineno<span class="hl opt">,</span>
                    a<span class="hl opt">-&gt;</span>a_lnotab<span class="hl opt">);</span>
 error<span class="hl opt">:</span>
    <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>consts<span class="hl opt">);</span>
    <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>names<span class="hl opt">);</span>
    <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>varnames<span class="hl opt">);</span>
    <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>name<span class="hl opt">);</span>
    <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>freevars<span class="hl opt">);</span>
    <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>cellvars<span class="hl opt">);</span>
    <span class="hl kwd">Py_XDECREF</span><span class="hl opt">(</span>bytecode<span class="hl opt">);</span>
    <span class="hl kwa">return</span> co<span class="hl opt">;</span>
<span class="hl opt">}</span>


<span class="hl com">/* For debugging purposes only */</span>
<span class="hl ppc">#if 0</span>
<span class="hl kwb">static void</span>
<span class="hl kwd">dump_instr</span><span class="hl opt">(</span><span class="hl kwb">const struct</span> instr <span class="hl opt">*</span>i<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">const char</span> <span class="hl opt">*</span>jrel <span class="hl opt">=</span> i<span class="hl opt">-&gt;</span>i_jrel ? <span class="hl str">&quot;jrel &quot;</span> <span class="hl opt">:</span> <span class="hl str">&quot;&quot;</span><span class="hl opt">;</span>
    <span class="hl kwb">const char</span> <span class="hl opt">*</span>jabs <span class="hl opt">=</span> i<span class="hl opt">-&gt;</span>i_jabs ? <span class="hl str">&quot;jabs &quot;</span> <span class="hl opt">:</span> <span class="hl str">&quot;&quot;</span><span class="hl opt">;</span>
    <span class="hl kwb">char</span> arg<span class="hl opt">[</span><span class="hl num">128</span><span class="hl opt">];</span>

    <span class="hl opt">*</span>arg <span class="hl opt">=</span> <span class="hl str">'\0'</span><span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>i<span class="hl opt">-&gt;</span>i_hasarg<span class="hl opt">)</span>
        <span class="hl kwd">sprintf</span><span class="hl opt">(</span>arg<span class="hl opt">,</span> <span class="hl str">&quot;arg: %d &quot;</span><span class="hl opt">,</span> i<span class="hl opt">-&gt;</span>i_oparg<span class="hl opt">);</span>

    <span class="hl kwd">fprintf</span><span class="hl opt">(</span>stderr<span class="hl opt">,</span> <span class="hl str">&quot;line: %d, opcode: %d %s%s%s</span><span class="hl esc">\n</span><span class="hl str">&quot;</span><span class="hl opt">,</span>
                    i<span class="hl opt">-&gt;</span>i_lineno<span class="hl opt">,</span> i<span class="hl opt">-&gt;</span>i_opcode<span class="hl opt">,</span> arg<span class="hl opt">,</span> jabs<span class="hl opt">,</span> jrel<span class="hl opt">);</span>
<span class="hl opt">}</span>

<span class="hl kwb">static void</span>
<span class="hl kwd">dump_basicblock</span><span class="hl opt">(</span><span class="hl kwb">const</span> basicblock <span class="hl opt">*</span>b<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwb">const char</span> <span class="hl opt">*</span>seen <span class="hl opt">=</span> b<span class="hl opt">-&gt;</span>b_seen ? <span class="hl str">&quot;seen &quot;</span> <span class="hl opt">:</span> <span class="hl str">&quot;&quot;</span><span class="hl opt">;</span>
    <span class="hl kwb">const char</span> <span class="hl opt">*</span>b_return <span class="hl opt">=</span> b<span class="hl opt">-&gt;</span>b_return ? <span class="hl str">&quot;return &quot;</span> <span class="hl opt">:</span> <span class="hl str">&quot;&quot;</span><span class="hl opt">;</span>
    <span class="hl kwd">fprintf</span><span class="hl opt">(</span>stderr<span class="hl opt">,</span> <span class="hl str">&quot;used: %d, depth: %d, offset: %d %s%s</span><span class="hl esc">\n</span><span class="hl str">&quot;</span><span class="hl opt">,</span>
        b<span class="hl opt">-&gt;</span>b_iused<span class="hl opt">,</span> b<span class="hl opt">-&gt;</span>b_startdepth<span class="hl opt">,</span> b<span class="hl opt">-&gt;</span>b_offset<span class="hl opt">,</span> seen<span class="hl opt">,</span> b_return<span class="hl opt">);</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span>b<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">) {</span>
        <span class="hl kwb">int</span> i<span class="hl opt">;</span>
        <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> i <span class="hl opt">&lt;</span> b<span class="hl opt">-&gt;</span>b_iused<span class="hl opt">;</span> i<span class="hl opt">++) {</span>
            <span class="hl kwd">fprintf</span><span class="hl opt">(</span>stderr<span class="hl opt">,</span> <span class="hl str">&quot;  [%02d] &quot;</span><span class="hl opt">,</span> i<span class="hl opt">);</span>
            <span class="hl kwd">dump_instr</span><span class="hl opt">(</span>b<span class="hl opt">-&gt;</span>b_instr <span class="hl opt">+</span> i<span class="hl opt">);</span>
        <span class="hl opt">}</span>
    <span class="hl opt">}</span>
<span class="hl opt">}</span>
<span class="hl ppc">#endif</span>

<span class="hl kwb">static</span> PyCodeObject <span class="hl opt">*</span>
<span class="hl kwd">assemble</span><span class="hl opt">(</span><span class="hl kwb">struct</span> compiler <span class="hl opt">*</span>c<span class="hl opt">,</span> <span class="hl kwb">int</span> addNone<span class="hl opt">)</span>
<span class="hl opt">{</span>
    basicblock <span class="hl opt">*</span>b<span class="hl opt">, *</span>entryblock<span class="hl opt">;</span>
    <span class="hl kwb">struct</span> assembler a<span class="hl opt">;</span>
    <span class="hl kwb">int</span> i<span class="hl opt">,</span> j<span class="hl opt">,</span> nblocks<span class="hl opt">;</span>
    PyCodeObject <span class="hl opt">*</span>co <span class="hl opt">=</span> NULL<span class="hl opt">;</span>

    <span class="hl com">/* Make sure every block that falls off the end returns None.</span>
<span class="hl com">       XXX NEXT_BLOCK() isn't quite right, because if the last</span>
<span class="hl com">       block ends with a jump or return b_next shouldn't set.</span>
<span class="hl com">     */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_curblock<span class="hl opt">-&gt;</span>b_return<span class="hl opt">) {</span>
        <span class="hl kwd">NEXT_BLOCK</span><span class="hl opt">(</span>c<span class="hl opt">);</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>addNone<span class="hl opt">)</span>
            <span class="hl kwd">ADDOP_O</span><span class="hl opt">(</span>c<span class="hl opt">,</span> LOAD_CONST<span class="hl opt">,</span> Py_None<span class="hl opt">,</span> consts<span class="hl opt">);</span>
        <span class="hl kwd">ADDOP</span><span class="hl opt">(</span>c<span class="hl opt">,</span> RETURN_VALUE<span class="hl opt">);</span>
    <span class="hl opt">}</span>

    nblocks <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span>
    entryblock <span class="hl opt">=</span> NULL<span class="hl opt">;</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>b <span class="hl opt">=</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_blocks<span class="hl opt">;</span> b <span class="hl opt">!=</span> NULL<span class="hl opt">;</span> b <span class="hl opt">=</span> b<span class="hl opt">-&gt;</span>b_list<span class="hl opt">) {</span>
        nblocks<span class="hl opt">++;</span>
        entryblock <span class="hl opt">=</span> b<span class="hl opt">;</span>
    <span class="hl opt">}</span>

    <span class="hl com">/* Set firstlineno if it wasn't explicitly set. */</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span>c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_firstlineno<span class="hl opt">) {</span>
        <span class="hl kwa">if</span> <span class="hl opt">(</span>entryblock <span class="hl opt">&amp;&amp;</span> entryblock<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">)</span>
            c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_firstlineno <span class="hl opt">=</span> entryblock<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">-&gt;</span>i_lineno<span class="hl opt">;</span>
        <span class="hl kwa">else</span>
            c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_firstlineno <span class="hl opt">=</span> <span class="hl num">1</span><span class="hl opt">;</span>
    <span class="hl opt">}</span>
    <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">assemble_init</span><span class="hl opt">(&amp;</span>a<span class="hl opt">,</span> nblocks<span class="hl opt">,</span> c<span class="hl opt">-&gt;</span>u<span class="hl opt">-&gt;</span>u_firstlineno<span class="hl opt">))</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    <span class="hl kwd">dfs</span><span class="hl opt">(</span>c<span class="hl opt">,</span> entryblock<span class="hl opt">, &amp;</span>a<span class="hl opt">);</span>

    <span class="hl com">/* Can't modify the bytecode after computing jump offsets. */</span>
    <span class="hl kwd">assemble_jump_offsets</span><span class="hl opt">(&amp;</span>a<span class="hl opt">,</span> c<span class="hl opt">);</span>

    <span class="hl com">/* Emit code in reverse postorder from dfs. */</span>
    <span class="hl kwa">for</span> <span class="hl opt">(</span>i <span class="hl opt">=</span> a<span class="hl opt">.</span>a_nblocks <span class="hl opt">-</span> <span class="hl num">1</span><span class="hl opt">;</span> i <span class="hl opt">&gt;=</span> <span class="hl num">0</span><span class="hl opt">;</span> i<span class="hl opt">--) {</span>
        b <span class="hl opt">=</span> a<span class="hl opt">.</span>a_postorder<span class="hl opt">[</span>i<span class="hl opt">];</span>
        <span class="hl kwa">for</span> <span class="hl opt">(</span>j <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> j <span class="hl opt">&lt;</span> b<span class="hl opt">-&gt;</span>b_iused<span class="hl opt">;</span> j<span class="hl opt">++)</span>
            <span class="hl kwa">if</span> <span class="hl opt">(!</span><span class="hl kwd">assemble_emit</span><span class="hl opt">(&amp;</span>a<span class="hl opt">, &amp;</span>b<span class="hl opt">-&gt;</span>b_instr<span class="hl opt">[</span>j<span class="hl opt">]))</span>
                <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    <span class="hl opt">}</span>

    <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">_PyBytes_Resize</span><span class="hl opt">(&amp;</span>a<span class="hl opt">.</span>a_lnotab<span class="hl opt">,</span> a<span class="hl opt">.</span>a_lnotab_off<span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>
    <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwd">_PyBytes_Resize</span><span class="hl opt">(&amp;</span>a<span class="hl opt">.</span>a_bytecode<span class="hl opt">,</span> a<span class="hl opt">.</span>a_offset<span class="hl opt">) &lt;</span> <span class="hl num">0</span><span class="hl opt">)</span>
        <span class="hl kwa">goto</span> error<span class="hl opt">;</span>

    co <span class="hl opt">=</span> <span class="hl kwd">makecode</span><span class="hl opt">(</span>c<span class="hl opt">, &amp;</span>a<span class="hl opt">);</span>
 error<span class="hl opt">:</span>
    <span class="hl kwd">assemble_free</span><span class="hl opt">(&amp;</span>a<span class="hl opt">);</span>
    <span class="hl kwa">return</span> co<span class="hl opt">;</span>
<span class="hl opt">}</span>

<span class="hl ppc">#undef PyAST_Compile</span>
<span class="hl kwd">PyAPI_FUNC</span><span class="hl opt">(</span>PyCodeObject <span class="hl opt">*)</span>
<span class="hl kwd">PyAST_Compile</span><span class="hl opt">(</span>mod_ty mod<span class="hl opt">,</span> <span class="hl kwb">const char</span> <span class="hl opt">*</span>filename<span class="hl opt">,</span> PyCompilerFlags <span class="hl opt">*</span>flags<span class="hl opt">,</span>
              PyArena <span class="hl opt">*</span>arena<span class="hl opt">)</span>
<span class="hl opt">{</span>
    <span class="hl kwa">return</span> <span class="hl kwd">PyAST_CompileEx</span><span class="hl opt">(</span>mod<span class="hl opt">,</span> filename<span class="hl opt">,</span> flags<span class="hl opt">, -</span><span class="hl num">1</span><span class="hl opt">,</span> arena<span class="hl opt">);</span>
<span class="hl opt">}</span>


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