1 files changed, 0 insertions, 175 deletions
diff --git a/Lib/lib2to3/fixes/fix_tuple_params.py b/Lib/lib2to3/fixes/fix_tuple_params.py
deleted file mode 100644
index cad755f..0000000
--- a/Lib/lib2to3/fixes/fix_tuple_params.py
+++ /dev/null
@@ -1,175 +0,0 @@
-"""Fixer for function definitions with tuple parameters.
-
-def func(((a, b), c), d):
-    ...
-
-    ->
-
-def func(x, d):
-    ((a, b), c) = x
-    ...
-
-It will also support lambdas:
-
-    lambda (x, y): x + y -> lambda t: t[0] + t[1]
-
-    # The parens are a syntax error in Python 3
-    lambda (x): x + y -> lambda x: x + y
-"""
-# Author: Collin Winter
-
-# Local imports
-from .. import pytree
-from ..pgen2 import token
-from .. import fixer_base
-from ..fixer_util import Assign, Name, Newline, Number, Subscript, syms
-
-def is_docstring(stmt):
-    return isinstance(stmt, pytree.Node) and \
-           stmt.children[0].type == token.STRING
-
-class FixTupleParams(fixer_base.BaseFix):
-    run_order = 4 #use a lower order since lambda is part of other
-                  #patterns
-    BM_compatible = True
-
-    PATTERN = """
-              funcdef< 'def' any parameters< '(' args=any ')' >
-                       ['->' any] ':' suite=any+ >
-              |
-              lambda=
-              lambdef< 'lambda' args=vfpdef< '(' inner=any ')' >
-                       ':' body=any
-              >
-              """
-
-    def transform(self, node, results):
-        if "lambda" in results:
-            return self.transform_lambda(node, results)
-
-        new_lines = []
-        suite = results["suite"]
-        args = results["args"]
-        # This crap is so "def foo(...): x = 5; y = 7" is handled correctly.
-        # TODO(cwinter): suite-cleanup
-        if suite[0].children[1].type == token.INDENT:
-            start = 2
-            indent = suite[0].children[1].value
-            end = Newline()
-        else:
-            start = 0
-            indent = "; "
-            end = pytree.Leaf(token.INDENT, "")
-
-        # We need access to self for new_name(), and making this a method
-        #  doesn't feel right. Closing over self and new_lines makes the
-        #  code below cleaner.
-        def handle_tuple(tuple_arg, add_prefix=False):
-            n = Name(self.new_name())
-            arg = tuple_arg.clone()
-            arg.prefix = ""
-            stmt = Assign(arg, n.clone())
-            if add_prefix:
-                n.prefix = " "
-            tuple_arg.replace(n)
-            new_lines.append(pytree.Node(syms.simple_stmt,
-                                         [stmt, end.clone()]))
-
-        if args.type == syms.tfpdef:
-            handle_tuple(args)
-        elif args.type == syms.typedargslist:
-            for i, arg in enumerate(args.children):
-                if arg.type == syms.tfpdef:
-                    # Without add_prefix, the emitted code is correct,
-                    #  just ugly.
-                    handle_tuple(arg, add_prefix=(i > 0))
-
-        if not new_lines:
-            return
-
-        # This isn't strictly necessary, but it plays nicely with other fixers.
-        # TODO(cwinter) get rid of this when children becomes a smart list
-        for line in new_lines:
-            line.parent = suite[0]
-
-        # TODO(cwinter) suite-cleanup
-        after = start
-        if start == 0:
-            new_lines[0].prefix = " "
-        elif is_docstring(suite[0].children[start]):
-            new_lines[0].prefix = indent
-            after = start + 1
-
-        for line in new_lines:
-            line.parent = suite[0]
-        suite[0].children[after:after] = new_lines
-        for i in range(after+1, after+len(new_lines)+1):
-            suite[0].children[i].prefix = indent
-        suite[0].changed()
-
-    def transform_lambda(self, node, results):
-        args = results["args"]
-        body = results["body"]
-        inner = simplify_args(results["inner"])
-
-        # Replace lambda ((((x)))): x  with lambda x: x
-        if inner.type == token.NAME:
-            inner = inner.clone()
-            inner.prefix = " "
-            args.replace(inner)
-            return
-
-        params = find_params(args)
-        to_index = map_to_index(params)
-        tup_name = self.new_name(tuple_name(params))
-
-        new_param = Name(tup_name, prefix=" ")
-        args.replace(new_param.clone())
-        for n in body.post_order():
-            if n.type == token.NAME and n.value in to_index:
-                subscripts = [c.clone() for c in to_index[n.value]]
-                new = pytree.Node(syms.power,
-                                  [new_param.clone()] + subscripts)
-                new.prefix = n.prefix
-                n.replace(new)
-
-
-### Helper functions for transform_lambda()
-
-def simplify_args(node):
-    if node.type in (syms.vfplist, token.NAME):
-        return node
-    elif node.type == syms.vfpdef:
-        # These look like vfpdef< '(' x ')' > where x is NAME
-        # or another vfpdef instance (leading to recursion).
-        while node.type == syms.vfpdef:
-            node = node.children[1]
-        return node
-    raise RuntimeError("Received unexpected node %s" % node)
-
-def find_params(node):
-    if node.type == syms.vfpdef:
-        return find_params(node.children[1])
-    elif node.type == token.NAME:
-        return node.value
-    return [find_params(c) for c in node.children if c.type != token.COMMA]
-
-def map_to_index(param_list, prefix=[], d=None):
-    if d is None:
-        d = {}
-    for i, obj in enumerate(param_list):
-        trailer = [Subscript(Number(str(i)))]
-        if isinstance(obj, list):
-            map_to_index(obj, trailer, d=d)
-        else:
-            d[obj] = prefix + trailer
-    return d
-
-def tuple_name(param_list):
-    l = []
-    for obj in param_list:
-        if isinstance(obj, list):
-            l.append(tuple_name(obj))
-        else:
-            l.append(obj)
-    return "_".join(l)