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# -*- coding: utf-8 -*-
"""
pyspecific.py
~~~~~~~~~~~~~
Sphinx extension with Python doc-specific markup.
:copyright: 2008-2014 by Georg Brandl.
:license: Python license.
"""
import re
import codecs
from os import path
from time import asctime
from pprint import pformat
from docutils.io import StringOutput
from docutils.utils import new_document
from docutils import nodes, utils
from sphinx import addnodes
from sphinx.builders import Builder
from sphinx.util.nodes import split_explicit_title
from sphinx.util.compat import Directive
from sphinx.writers.html import HTMLTranslator
from sphinx.writers.text import TextWriter
from sphinx.writers.latex import LaTeXTranslator
from sphinx.domains.python import PyModulelevel, PyClassmember
# Support for checking for suspicious markup
import suspicious
ISSUE_URI = 'https://bugs.python.org/issue%s'
SOURCE_URI = 'https://hg.python.org/cpython/file/default/%s'
# monkey-patch reST parser to disable alphabetic and roman enumerated lists
from docutils.parsers.rst.states import Body
Body.enum.converters['loweralpha'] = \
Body.enum.converters['upperalpha'] = \
Body.enum.converters['lowerroman'] = \
Body.enum.converters['upperroman'] = lambda x: None
# monkey-patch HTML and LaTeX translators to keep doctest blocks in the
# doctest docs themselves
orig_visit_literal_block = HTMLTranslator.visit_literal_block
orig_depart_literal_block = LaTeXTranslator.depart_literal_block
def new_visit_literal_block(self, node):
meta = self.builder.env.metadata[self.builder.current_docname]
old_trim_doctest_flags = self.highlighter.trim_doctest_flags
if 'keepdoctest' in meta:
self.highlighter.trim_doctest_flags = False
try:
orig_visit_literal_block(self, node)
finally:
self.highlighter.trim_doctest_flags = old_trim_doctest_flags
def new_depart_literal_block(self, node):
meta = self.builder.env.metadata[self.curfilestack[-1]]
old_trim_doctest_flags = self.highlighter.trim_doctest_flags
if 'keepdoctest' in meta:
self.highlighter.trim_doctest_flags = False
try:
orig_depart_literal_block(self, node)
finally:
self.highlighter.trim_doctest_flags = old_trim_doctest_flags
HTMLTranslator.visit_literal_block = new_visit_literal_block
LaTeXTranslator.depart_literal_block = new_depart_literal_block
# Support for marking up and linking to bugs.python.org issues
def issue_role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
issue = utils.unescape(text)
text = 'issue ' + issue
refnode = nodes.reference(text, text, refuri=ISSUE_URI % issue)
return [refnode], []
# Support for linking to Python source files easily
def source_role(typ, rawtext, text, lineno, inliner, options={}, content=[]):
has_t, title, target = split_explicit_title(text)
title = utils.unescape(title)
target = utils.unescape(target)
refnode = nodes.reference(title, title, refuri=SOURCE_URI % target)
return [refnode], []
# Support for marking up implementation details
class ImplementationDetail(Directive):
has_content = True
required_arguments = 0
optional_arguments = 1
final_argument_whitespace = True
def run(self):
pnode = nodes.compound(classes=['impl-detail'])
content = self.content
add_text = nodes.strong('CPython implementation detail:',
'CPython implementation detail:')
if self.arguments:
n, m = self.state.inline_text(self.arguments[0], self.lineno)
pnode.append(nodes.paragraph('', '', *(n + m)))
self.state.nested_parse(content, self.content_offset, pnode)
if pnode.children and isinstance(pnode[0], nodes.paragraph):
pnode[0].insert(0, add_text)
pnode[0].insert(1, nodes.Text(' '))
else:
pnode.insert(0, nodes.paragraph('', '', add_text))
return [pnode]
# Support for documenting decorators
class PyDecoratorMixin(object):
def handle_signature(self, sig, signode):
ret = super(PyDecoratorMixin, self).handle_signature(sig, signode)
signode.insert(0, addnodes.desc_addname('@', '@'))
return ret
def needs_arglist(self):
return False
class PyDecoratorFunction(PyDecoratorMixin, PyModulelevel):
def run(self):
# a decorator function is a function after all
self.name = 'py:function'
return PyModulelevel.run(self)
class PyDecoratorMethod(PyDecoratorMixin, PyClassmember):
def run(self):
self.name = 'py:method'
return PyClassmember.run(self)
class PyCoroutineMixin(object):
def handle_signature(self, sig, signode):
ret = super(PyCoroutineMixin, self).handle_signature(sig, signode)
signode.insert(0, addnodes.desc_annotation('coroutine ', 'coroutine '))
return ret
class PyCoroutineFunction(PyCoroutineMixin, PyModulelevel):
def run(self):
self.name = 'py:function'
return PyModulelevel.run(self)
class PyCoroutineMethod(PyCoroutineMixin, PyClassmember):
def run(self):
self.name = 'py:method'
return PyClassmember.run(self)
# Support for documenting version of removal in deprecations
class DeprecatedRemoved(Directive):
has_content = True
required_arguments = 2
optional_arguments = 1
final_argument_whitespace = True
option_spec = {}
_label = 'Deprecated since version %s, will be removed in version %s'
def run(self):
node = addnodes.versionmodified()
node.document = self.state.document
node['type'] = 'deprecated-removed'
version = (self.arguments[0], self.arguments[1])
node['version'] = version
text = self._label % version
if len(self.arguments) == 3:
inodes, messages = self.state.inline_text(self.arguments[2],
self.lineno+1)
para = nodes.paragraph(self.arguments[2], '', *inodes)
node.append(para)
else:
messages = []
if self.content:
self.state.nested_parse(self.content, self.content_offset, node)
if len(node):
if isinstance(node[0], nodes.paragraph) and node[0].rawsource:
content = nodes.inline(node[0].rawsource, translatable=True)
content.source = node[0].source
content.line = node[0].line
content += node[0].children
node[0].replace_self(nodes.paragraph('', '', content))
node[0].insert(0, nodes.inline('', '%s: ' % text,
classes=['versionmodified']))
else:
para = nodes.paragraph('', '',
nodes.inline('', '%s.' % text,
classes=['versionmodified']))
node.append(para)
env = self.state.document.settings.env
env.note_versionchange('deprecated', version[0], node, self.lineno)
return [node] + messages
# Support for including Misc/NEWS
issue_re = re.compile('([Ii])ssue #([0-9]+)')
whatsnew_re = re.compile(r"(?im)^what's new in (.*?)\??$")
class MiscNews(Directive):
has_content = False
required_arguments = 1
optional_arguments = 0
final_argument_whitespace = False
option_spec = {}
def run(self):
fname = self.arguments[0]
source = self.state_machine.input_lines.source(
self.lineno - self.state_machine.input_offset - 1)
source_dir = path.dirname(path.abspath(source))
fpath = path.join(source_dir, fname)
self.state.document.settings.record_dependencies.add(fpath)
try:
fp = codecs.open(fpath, encoding='utf-8')
try:
content = fp.read()
finally:
fp.close()
except Exception:
text = 'The NEWS file is not available.'
node = nodes.strong(text, text)
return [node]
content = issue_re.sub(r'`\1ssue #\2 <https://bugs.python.org/\2>`__',
content)
content = whatsnew_re.sub(r'\1', content)
# remove first 3 lines as they are the main heading
lines = ['.. default-role:: obj', ''] + content.splitlines()[3:]
self.state_machine.insert_input(lines, fname)
return []
# Support for building "topic help" for pydoc
pydoc_topic_labels = [
'assert', 'assignment', 'atom-identifiers', 'atom-literals',
'attribute-access', 'attribute-references', 'augassign', 'binary',
'bitwise', 'bltin-code-objects', 'bltin-ellipsis-object',
'bltin-null-object', 'bltin-type-objects', 'booleans',
'break', 'callable-types', 'calls', 'class', 'comparisons', 'compound',
'context-managers', 'continue', 'conversions', 'customization', 'debugger',
'del', 'dict', 'dynamic-features', 'else', 'exceptions', 'execmodel',
'exprlists', 'floating', 'for', 'formatstrings', 'function', 'global',
'id-classes', 'identifiers', 'if', 'imaginary', 'import', 'in', 'integers',
'lambda', 'lists', 'naming', 'nonlocal', 'numbers', 'numeric-types',
'objects', 'operator-summary', 'pass', 'power', 'raise', 'return',
'sequence-types', 'shifting', 'slicings', 'specialattrs', 'specialnames',
'string-methods', 'strings', 'subscriptions', 'truth', 'try', 'types',
'typesfunctions', 'typesmapping', 'typesmethods', 'typesmodules',
'typesseq', 'typesseq-mutable', 'unary', 'while', 'with', 'yield'
]
class PydocTopicsBuilder(Builder):
name = 'pydoc-topics'
def init(self):
self.topics = {}
def get_outdated_docs(self):
return 'all pydoc topics'
def get_target_uri(self, docname, typ=None):
return '' # no URIs
def write(self, *ignored):
writer = TextWriter(self)
for label in self.status_iterator(pydoc_topic_labels,
'building topics... ',
length=len(pydoc_topic_labels)):
if label not in self.env.domaindata['std']['labels']:
self.warn('label %r not in documentation' % label)
continue
docname, labelid, sectname = self.env.domaindata['std']['labels'][label]
doctree = self.env.get_and_resolve_doctree(docname, self)
document = new_document('<section node>')
document.append(doctree.ids[labelid])
destination = StringOutput(encoding='utf-8')
writer.write(document, destination)
self.topics[label] = writer.output
def finish(self):
f = open(path.join(self.outdir, 'topics.py'), 'wb')
try:
f.write('# -*- coding: utf-8 -*-\n'.encode('utf-8'))
f.write(('# Autogenerated by Sphinx on %s\n' % asctime()).encode('utf-8'))
f.write(('topics = ' + pformat(self.topics) + '\n').encode('utf-8'))
finally:
f.close()
# Support for documenting Opcodes
opcode_sig_re = re.compile(r'(\w+(?:\+\d)?)(?:\s*\((.*)\))?')
def parse_opcode_signature(env, sig, signode):
"""Transform an opcode signature into RST nodes."""
m = opcode_sig_re.match(sig)
if m is None:
raise ValueError
opname, arglist = m.groups()
signode += addnodes.desc_name(opname, opname)
if arglist is not None:
paramlist = addnodes.desc_parameterlist()
signode += paramlist
paramlist += addnodes.desc_parameter(arglist, arglist)
return opname.strip()
# Support for documenting pdb commands
pdbcmd_sig_re = re.compile(r'([a-z()!]+)\s*(.*)')
# later...
# pdbargs_tokens_re = re.compile(r'''[a-zA-Z]+ | # identifiers
# [.,:]+ | # punctuation
# [\[\]()] | # parens
# \s+ # whitespace
# ''', re.X)
def parse_pdb_command(env, sig, signode):
"""Transform a pdb command signature into RST nodes."""
m = pdbcmd_sig_re.match(sig)
if m is None:
raise ValueError
name, args = m.groups()
fullname = name.replace('(', '').replace(')', '')
signode += addnodes.desc_name(name, name)
if args:
signode += addnodes.desc_addname(' '+args, ' '+args)
return fullname
def setup(app):
app.add_role('issue', issue_role)
app.add_role('source', source_role)
app.add_directive('impl-detail', ImplementationDetail)
app.add_directive('deprecated-removed', DeprecatedRemoved)
app.add_builder(PydocTopicsBuilder)
app.add_builder(suspicious.CheckSuspiciousMarkupBuilder)
app.add_description_unit('opcode', 'opcode', '%s (opcode)',
parse_opcode_signature)
app.add_description_unit('pdbcommand', 'pdbcmd', '%s (pdb command)',
parse_pdb_command)
app.add_description_unit('2to3fixer', '2to3fixer', '%s (2to3 fixer)')
app.add_directive_to_domain('py', 'decorator', PyDecoratorFunction)
app.add_directive_to_domain('py', 'decoratormethod', PyDecoratorMethod)
app.add_directive_to_domain('py', 'coroutinefunction', PyCoroutineFunction)
app.add_directive_to_domain('py', 'coroutinemethod', PyCoroutineMethod)
app.add_directive('miscnews', MiscNews)
return {'version': '1.0', 'parallel_read_safe': True}
|