FM / fixes

/usr/lib64/python2.7/lib2to3/fixes

Name	Size	Mode	Actions
fix_apply.py	2433	0644	edit dl rm
fix_apply.pyc	2084	0644	edit dl rm
fix_apply.pyo	2051	0644	edit dl rm
fix_asserts.py	984	0644	edit dl rm
fix_asserts.pyc	1561	0644	edit dl rm
fix_asserts.pyo	1561	0644	edit dl rm
fix_basestring.py	321	0644	edit dl rm
fix_basestring.pyc	807	0644	edit dl rm
fix_basestring.pyo	807	0644	edit dl rm
fix_buffer.py	591	0644	edit dl rm
fix_buffer.pyc	964	0644	edit dl rm
fix_buffer.pyo	964	0644	edit dl rm
fix_dict.py	3824	0644	edit dl rm
fix_dict.pyc	3769	0644	edit dl rm
fix_dict.pyo	3644	0644	edit dl rm
fix_except.py	3352	0644	edit dl rm
fix_except.pyc	3009	0644	edit dl rm
fix_except.pyo	3009	0644	edit dl rm
fix_exec.py	1002	0644	edit dl rm
fix_exec.pyc	1432	0644	edit dl rm
fix_exec.pyo	1399	0644	edit dl rm
fix_execfile.py	2056	0644	edit dl rm
fix_execfile.pyc	2108	0644	edit dl rm
fix_execfile.pyo	2075	0644	edit dl rm
fix_exitfunc.py	2503	0644	edit dl rm
fix_exitfunc.pyc	2757	0644	edit dl rm
fix_exitfunc.pyo	2757	0644	edit dl rm
fix_filter.py	2107	0644	edit dl rm
fix_filter.pyc	2270	0644	edit dl rm
fix_filter.pyo	2270	0644	edit dl rm
fix_funcattrs.py	645	0644	edit dl rm
fix_funcattrs.pyc	1128	0644	edit dl rm
fix_funcattrs.pyo	1128	0644	edit dl rm
fix_future.py	547	0644	edit dl rm
fix_future.pyc	933	0644	edit dl rm
fix_future.pyo	933	0644	edit dl rm
fix_getcwdu.py	452	0644	edit dl rm
fix_getcwdu.pyc	940	0644	edit dl rm
fix_getcwdu.pyo	940	0644	edit dl rm
fix_has_key.py	3227	0644	edit dl rm
fix_has_key.pyc	3198	0644	edit dl rm
fix_has_key.pyo	3165	0644	edit dl rm
fix_idioms.py	4889	0644	edit dl rm
fix_idioms.pyc	4537	0644	edit dl rm
fix_idioms.pyo	4433	0644	edit dl rm
fix_import.py	3260	0644	edit dl rm
fix_import.pyc	3253	0644	edit dl rm
fix_import.pyo	3253	0644	edit dl rm
fix_imports.py	5693	0644	edit dl rm
fix_imports.pyc	5380	0644	edit dl rm
fix_imports.pyo	5380	0644	edit dl rm
fix_imports2.py	289	0644	edit dl rm
fix_imports2.pyc	634	0644	edit dl rm
fix_imports2.pyo	634	0644	edit dl rm
fix_input.py	710	0644	edit dl rm
fix_input.pyc	1148	0644	edit dl rm
fix_input.pyo	1148	0644	edit dl rm
fix_intern.py	1866	0644	edit dl rm
fix_intern.pyc	1797	0644	edit dl rm
fix_intern.pyo	1797	0644	edit dl rm
fix_isinstance.py	1609	0644	edit dl rm
fix_isinstance.pyc	1852	0644	edit dl rm
fix_isinstance.pyo	1852	0644	edit dl rm
fix_itertools.py	1550	0644	edit dl rm
fix_itertools.pyc	1805	0644	edit dl rm
fix_itertools.pyo	1805	0644	edit dl rm
fix_itertools_imports.py	2094	0644	edit dl rm
fix_itertools_imports.pyc	2030	0644	edit dl rm
fix_itertools_imports.pyo	1985	0644	edit dl rm
fix_long.py	477	0644	edit dl rm
fix_long.pyc	855	0644	edit dl rm
fix_long.pyo	855	0644	edit dl rm
fix_map.py	3062	0644	edit dl rm
fix_map.pyc	3054	0644	edit dl rm
fix_map.pyo	3054	0644	edit dl rm
fix_metaclass.py	8216	0644	edit dl rm
fix_metaclass.pyc	6605	0644	edit dl rm
fix_metaclass.pyo	6555	0644	edit dl rm
fix_methodattrs.py	615	0644	edit dl rm
fix_methodattrs.pyc	1152	0644	edit dl rm
fix_methodattrs.pyo	1152	0644	edit dl rm
fix_ne.py	573	0644	edit dl rm
fix_ne.pyc	1001	0644	edit dl rm
fix_ne.pyo	1001	0644	edit dl rm
fix_next.py	3181	0644	edit dl rm
fix_next.pyc	3555	0644	edit dl rm
fix_next.pyo	3522	0644	edit dl rm
fix_nonzero.py	598	0644	edit dl rm
fix_nonzero.pyc	1100	0644	edit dl rm
fix_nonzero.pyo	1100	0644	edit dl rm
fix_numliterals.py	773	0644	edit dl rm
fix_numliterals.pyc	1265	0644	edit dl rm
fix_numliterals.pyo	1265	0644	edit dl rm
fix_operator.py	3472	0644	edit dl rm
fix_operator.pyc	5150	0644	edit dl rm
fix_operator.pyo	5150	0644	edit dl rm
fix_paren.py	1228	0644	edit dl rm
fix_paren.pyc	1557	0644	edit dl rm
fix_paren.pyo	1557	0644	edit dl rm
fix_print.py	2865	0644	edit dl rm
fix_print.pyc	2743	0644	edit dl rm
fix_print.pyo	2646	0644	edit dl rm
fix_raise.py	2934	0644	edit dl rm
fix_raise.pyc	2512	0644	edit dl rm
fix_raise.pyo	2512	0644	edit dl rm
fix_raw_input.py	455	0644	edit dl rm
fix_raw_input.pyc	950	0644	edit dl rm
fix_raw_input.pyo	950	0644	edit dl rm
fix_reduce.py	839	0644	edit dl rm
fix_reduce.pyc	1276	0644	edit dl rm
fix_reduce.pyo	1276	0644	edit dl rm
fix_renames.py	2218	0644	edit dl rm
fix_renames.pyc	2471	0644	edit dl rm
fix_renames.pyo	2471	0644	edit dl rm
fix_repr.py	614	0644	edit dl rm
fix_repr.pyc	1030	0644	edit dl rm
fix_repr.pyo	1030	0644	edit dl rm
fix_set_literal.py	1699	0644	edit dl rm
fix_set_literal.pyc	2004	0644	edit dl rm
fix_set_literal.pyo	2004	0644	edit dl rm
fix_standarderror.py	450	0644	edit dl rm
fix_standarderror.pyc	867	0644	edit dl rm
fix_standarderror.pyo	867	0644	edit dl rm
fix_sys_exc.py	1039	0644	edit dl rm
fix_sys_exc.pyc	1721	0644	edit dl rm
fix_sys_exc.pyo	1721	0644	edit dl rm
fix_throw.py	1586	0644	edit dl rm
fix_throw.pyc	2010	0644	edit dl rm
fix_throw.pyo	2010	0644	edit dl rm
fix_tuple_params.py	5577	0644	edit dl rm
fix_tuple_params.pyc	5458	0644	edit dl rm
fix_tuple_params.pyo	5458	0644	edit dl rm
fix_types.py	1809	0644	edit dl rm
fix_types.pyc	2210	0644	edit dl rm
fix_types.pyo	2210	0644	edit dl rm
fix_unicode.py	1269	0644	edit dl rm
fix_unicode.pyc	1732	0644	edit dl rm
fix_unicode.pyo	1732	0644	edit dl rm
fix_urllib.py	8385	0644	edit dl rm
fix_urllib.pyc	7160	0644	edit dl rm
fix_urllib.pyo	7160	0644	edit dl rm
fix_ws_comma.py	1095	0644	edit dl rm
fix_ws_comma.pyc	1396	0644	edit dl rm
fix_ws_comma.pyo	1396	0644	edit dl rm
fix_xrange.py	2699	0644	edit dl rm
fix_xrange.pyc	3087	0644	edit dl rm
fix_xrange.pyo	3087	0644	edit dl rm
fix_xreadlines.py	690	0644	edit dl rm
fix_xreadlines.pyc	1166	0644	edit dl rm
fix_xreadlines.pyo	1166	0644	edit dl rm
fix_zip.py	904	0644	edit dl rm
fix_zip.pyc	1360	0644	edit dl rm
fix_zip.pyo	1360	0644	edit dl rm
__init__.py	47	0644	edit dl rm
__init__.pyc	133	0644	edit dl rm
__init__.pyo	133	0644	edit dl rm

Edit: /usr/lib64/python2.7/lib2to3/fixes/fix_metaclass.py (8216B)

"""Fixer for __metaclass__ = X -> (metaclass=X) methods.

The various forms of classef (inherits nothing, inherits once, inherints
   many) don't parse the same in the CST so we look at ALL classes for
   a __metaclass__ and if we find one normalize the inherits to all be
   an arglist.

For one-liner classes ('class X: pass') there is no indent/dedent so
   we normalize those into having a suite.

Moving the __metaclass__ into the classdef can also cause the class
   body to be empty so there is some special casing for that as well.

This fixer also tries very hard to keep original indenting and spacing
   in all those corner cases.

"""
# Author: Jack Diederich

# Local imports
from .. import fixer_base
from ..pygram import token
from ..fixer_util import Name, syms, Node, Leaf

def has_metaclass(parent):
    """ we have to check the cls_node without changing it.
        There are two possibilities:
          1)  clsdef => suite => simple_stmt => expr_stmt => Leaf('__meta')
          2)  clsdef => simple_stmt => expr_stmt => Leaf('__meta')
    """
    for node in parent.children:
        if node.type == syms.suite:
            return has_metaclass(node)
        elif node.type == syms.simple_stmt and node.children:
            expr_node = node.children[0]
            if expr_node.type == syms.expr_stmt and expr_node.children:
                left_side = expr_node.children[0]
                if isinstance(left_side, Leaf) and \
                        left_side.value == '__metaclass__':
                    return True
    return False

def fixup_parse_tree(cls_node):
    """ one-line classes don't get a suite in the parse tree so we add
        one to normalize the tree
    """
    for node in cls_node.children:
        if node.type == syms.suite:
            # already in the preferred format, do nothing
            return

# !%@#! oneliners have no suite node, we have to fake one up
    for i, node in enumerate(cls_node.children):
        if node.type == token.COLON:
            break
    else:
        raise ValueError("No class suite and no ':'!")

# move everything into a suite node
    suite = Node(syms.suite, [])
    while cls_node.children[i+1:]:
        move_node = cls_node.children[i+1]
        suite.append_child(move_node.clone())
        move_node.remove()
    cls_node.append_child(suite)
    node = suite

def fixup_simple_stmt(parent, i, stmt_node):
    """ if there is a semi-colon all the parts count as part of the same
        simple_stmt.  We just want the __metaclass__ part so we move
        everything after the semi-colon into its own simple_stmt node
    """
    for semi_ind, node in enumerate(stmt_node.children):
        if node.type == token.SEMI: # *sigh*
            break
    else:
        return

node.remove() # kill the semicolon
    new_expr = Node(syms.expr_stmt, [])
    new_stmt = Node(syms.simple_stmt, [new_expr])
    while stmt_node.children[semi_ind:]:
        move_node = stmt_node.children[semi_ind]
        new_expr.append_child(move_node.clone())
        move_node.remove()
    parent.insert_child(i, new_stmt)
    new_leaf1 = new_stmt.children[0].children[0]
    old_leaf1 = stmt_node.children[0].children[0]
    new_leaf1.prefix = old_leaf1.prefix

def remove_trailing_newline(node):
    if node.children and node.children[-1].type == token.NEWLINE:
        node.children[-1].remove()

def find_metas(cls_node):
    # find the suite node (Mmm, sweet nodes)
    for node in cls_node.children:
        if node.type == syms.suite:
            break
    else:
        raise ValueError("No class suite!")

# look for simple_stmt[ expr_stmt[ Leaf('__metaclass__') ] ]
    for i, simple_node in list(enumerate(node.children)):
        if simple_node.type == syms.simple_stmt and simple_node.children:
            expr_node = simple_node.children[0]
            if expr_node.type == syms.expr_stmt and expr_node.children:
                # Check if the expr_node is a simple assignment.
                left_node = expr_node.children[0]
                if isinstance(left_node, Leaf) and \
                        left_node.value == u'__metaclass__':
                    # We found an assignment to __metaclass__.
                    fixup_simple_stmt(node, i, simple_node)
                    remove_trailing_newline(simple_node)
                    yield (node, i, simple_node)

def fixup_indent(suite):
    """ If an INDENT is followed by a thing with a prefix then nuke the prefix
        Otherwise we get in trouble when removing __metaclass__ at suite start
    """
    kids = suite.children[::-1]
    # find the first indent
    while kids:
        node = kids.pop()
        if node.type == token.INDENT:
            break

# find the first Leaf
    while kids:
        node = kids.pop()
        if isinstance(node, Leaf) and node.type != token.DEDENT:
            if node.prefix:
                node.prefix = u''
            return
        else:
            kids.extend(node.children[::-1])

class FixMetaclass(fixer_base.BaseFix):
    BM_compatible = True

PATTERN = """
    classdef<any*>
    """

def transform(self, node, results):
        if not has_metaclass(node):
            return

fixup_parse_tree(node)

# find metaclasses, keep the last one
        last_metaclass = None
        for suite, i, stmt in find_metas(node):
            last_metaclass = stmt
            stmt.remove()

text_type = node.children[0].type # always Leaf(nnn, 'class')

# figure out what kind of classdef we have
        if len(node.children) == 7:
            # Node(classdef, ['class', 'name', '(', arglist, ')', ':', suite])
            #                 0        1       2    3        4    5    6
            if node.children[3].type == syms.arglist:
                arglist = node.children[3]
            # Node(classdef, ['class', 'name', '(', 'Parent', ')', ':', suite])
            else:
                parent = node.children[3].clone()
                arglist = Node(syms.arglist, [parent])
                node.set_child(3, arglist)
        elif len(node.children) == 6:
            # Node(classdef, ['class', 'name', '(',  ')', ':', suite])
            #                 0        1       2     3    4    5
            arglist = Node(syms.arglist, [])
            node.insert_child(3, arglist)
        elif len(node.children) == 4:
            # Node(classdef, ['class', 'name', ':', suite])
            #                 0        1       2    3
            arglist = Node(syms.arglist, [])
            node.insert_child(2, Leaf(token.RPAR, u')'))
            node.insert_child(2, arglist)
            node.insert_child(2, Leaf(token.LPAR, u'('))
        else:
            raise ValueError("Unexpected class definition")

# now stick the metaclass in the arglist
        meta_txt = last_metaclass.children[0].children[0]
        meta_txt.value = 'metaclass'
        orig_meta_prefix = meta_txt.prefix

if arglist.children:
            arglist.append_child(Leaf(token.COMMA, u','))
            meta_txt.prefix = u' '
        else:
            meta_txt.prefix = u''

# compact the expression "metaclass = Meta" -> "metaclass=Meta"
        expr_stmt = last_metaclass.children[0]
        assert expr_stmt.type == syms.expr_stmt
        expr_stmt.children[1].prefix = u''
        expr_stmt.children[2].prefix = u''

arglist.append_child(last_metaclass)

fixup_indent(suite)

# check for empty suite
        if not suite.children:
            # one-liner that was just __metaclass_
            suite.remove()
            pass_leaf = Leaf(text_type, u'pass')
            pass_leaf.prefix = orig_meta_prefix
            node.append_child(pass_leaf)
            node.append_child(Leaf(token.NEWLINE, u'\n'))

elif len(suite.children) > 1 and \
                 (suite.children[-2].type == token.INDENT and
                  suite.children[-1].type == token.DEDENT):
            # there was only one line in the class body and it was __metaclass__
            pass_leaf = Leaf(text_type, u'pass')
            suite.insert_child(-1, pass_leaf)
            suite.insert_child(-1, Leaf(token.NEWLINE, u'\n'))

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