0UT1S's

opt/alt/python310/lib64/python3.10/lib2to3/fixes/

By Order of Mr.0UT1S

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[DIR] __pycache__

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47 bytes

2.29 KB

984 bytes

fix_basestring.py

320 bytes

590 bytes

3.67 KB

3.27 KB

979 bytes

fix_execfile.py

2.00 KB

fix_exitfunc.py

2.44 KB

2.70 KB

fix_funcattrs.py

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451 bytes

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4.76 KB

3.18 KB

5.55 KB

fix_imports2.py

289 bytes

708 bytes

1.12 KB

fix_isinstance.py

1.57 KB

fix_itertools.py

1.51 KB

fix_itertools_imports.py

2.04 KB

476 bytes

3.55 KB

fix_metaclass.py

8.00 KB

fix_methodattrs.py

606 bytes

571 bytes

3.10 KB

591 bytes

fix_numliterals.py

768 bytes

fix_operator.py

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fix_raw_input.py

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fix_set_literal.py

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fix_standarderror.py

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fix_tuple_params.py

5.43 KB

1.73 KB

1.23 KB

8.17 KB

fix_ws_comma.py

1.06 KB

2.63 KB

fix_xreadlines.py

689 bytes

1.26 KB

"""Fixer for it.next() -> next(it), per PEP 3114."""
# Author: Collin Winter

# Things that currently aren't covered:
#   - listcomp "next" names aren't warned
#   - "with" statement targets aren't checked

# Local imports
from ..pgen2 import token
from ..pygram import python_symbols as syms
from .. import fixer_base
from ..fixer_util import Name, Call, find_binding

bind_warning = "Calls to builtin next() possibly shadowed by global binding"

class FixNext(fixer_base.BaseFix):
    BM_compatible = True
    PATTERN = """
    power< base=any+ trailer< '.' attr='next' > trailer< '(' ')' > >
    |
    power< head=any+ trailer< '.' attr='next' > not trailer< '(' ')' > >
    |
    classdef< 'class' any+ ':'
              suite< any*
                     funcdef< 'def'
                              name='next'
                              parameters< '(' NAME ')' > any+ >
                     any* > >
    |
    global=global_stmt< 'global' any* 'next' any* >
    """

order = "pre" # Pre-order tree traversal

def start_tree(self, tree, filename):
        super(FixNext, self).start_tree(tree, filename)

n = find_binding('next', tree)
        if n:
            self.warning(n, bind_warning)
            self.shadowed_next = True
        else:
            self.shadowed_next = False

def transform(self, node, results):
        assert results

base = results.get("base")
        attr = results.get("attr")
        name = results.get("name")

if base:
            if self.shadowed_next:
                attr.replace(Name("__next__", prefix=attr.prefix))
            else:
                base = [n.clone() for n in base]
                base[0].prefix = ""
                node.replace(Call(Name("next", prefix=node.prefix), base))
        elif name:
            n = Name("__next__", prefix=name.prefix)
            name.replace(n)
        elif attr:
            # We don't do this transformation if we're assigning to "x.next".
            # Unfortunately, it doesn't seem possible to do this in PATTERN,
            #  so it's being done here.
            if is_assign_target(node):
                head = results["head"]
                if "".join([str(n) for n in head]).strip() == '__builtin__':
                    self.warning(node, bind_warning)
                return
            attr.replace(Name("__next__"))
        elif "global" in results:
            self.warning(node, bind_warning)
            self.shadowed_next = True

### The following functions help test if node is part of an assignment
###  target.

def is_assign_target(node):
    assign = find_assign(node)
    if assign is None:
        return False

for child in assign.children:
        if child.type == token.EQUAL:
            return False
        elif is_subtree(child, node):
            return True
    return False

def find_assign(node):
    if node.type == syms.expr_stmt:
        return node
    if node.type == syms.simple_stmt or node.parent is None:
        return None
    return find_assign(node.parent)

def is_subtree(root, node):
    if root == node:
        return True
    return any(is_subtree(c, node) for c in root.children)