Current Dir: /snap/core22/2437/usr/lib/python3.10/lib2to3/fixes/

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[FILE] fix_apply.py [ edit | delete | rename ]
[FILE] fix_asserts.py [ edit | delete | rename ]
[FILE] fix_basestring.py [ edit | delete | rename ]
[FILE] fix_buffer.py [ edit | delete | rename ]
[FILE] fix_dict.py [ edit | delete | rename ]
[FILE] fix_except.py [ edit | delete | rename ]
[FILE] fix_exec.py [ edit | delete | rename ]
[FILE] fix_execfile.py [ edit | delete | rename ]
[FILE] fix_exitfunc.py [ edit | delete | rename ]
[FILE] fix_filter.py [ edit | delete | rename ]
[FILE] fix_funcattrs.py [ edit | delete | rename ]
[FILE] fix_future.py [ edit | delete | rename ]
[FILE] fix_getcwdu.py [ edit | delete | rename ]
[FILE] fix_has_key.py [ edit | delete | rename ]
[FILE] fix_idioms.py [ edit | delete | rename ]
[FILE] fix_import.py [ edit | delete | rename ]
[FILE] fix_imports.py [ edit | delete | rename ]
[FILE] fix_imports2.py [ edit | delete | rename ]
[FILE] fix_input.py [ edit | delete | rename ]
[FILE] fix_intern.py [ edit | delete | rename ]
[FILE] fix_isinstance.py [ edit | delete | rename ]
[FILE] fix_itertools.py [ edit | delete | rename ]
[FILE] fix_itertools_imports.py [ edit | delete | rename ]
[FILE] fix_long.py [ edit | delete | rename ]
[FILE] fix_map.py [ edit | delete | rename ]
[FILE] fix_metaclass.py [ edit | delete | rename ]
[FILE] fix_methodattrs.py [ edit | delete | rename ]
[FILE] fix_ne.py [ edit | delete | rename ]
[FILE] fix_next.py [ edit | delete | rename ]
[FILE] fix_nonzero.py [ edit | delete | rename ]
[FILE] fix_numliterals.py [ edit | delete | rename ]
[FILE] fix_operator.py [ edit | delete | rename ]
[FILE] fix_paren.py [ edit | delete | rename ]
[FILE] fix_print.py [ edit | delete | rename ]
[FILE] fix_raise.py [ edit | delete | rename ]
[FILE] fix_raw_input.py [ edit | delete | rename ]
[FILE] fix_reduce.py [ edit | delete | rename ]
[FILE] fix_reload.py [ edit | delete | rename ]
[FILE] fix_renames.py [ edit | delete | rename ]
[FILE] fix_repr.py [ edit | delete | rename ]
[FILE] fix_set_literal.py [ edit | delete | rename ]
[FILE] fix_standarderror.py [ edit | delete | rename ]
[FILE] fix_sys_exc.py [ edit | delete | rename ]
[FILE] fix_throw.py [ edit | delete | rename ]
[FILE] fix_tuple_params.py [ edit | delete | rename ]
[FILE] fix_types.py [ edit | delete | rename ]
[FILE] fix_unicode.py [ edit | delete | rename ]
[FILE] fix_urllib.py [ edit | delete | rename ]
[FILE] fix_ws_comma.py [ edit | delete | rename ]
[FILE] fix_xrange.py [ edit | delete | rename ]
[FILE] fix_xreadlines.py [ edit | delete | rename ]
[FILE] fix_zip.py [ edit | delete | rename ]
[FILE] __init__.py [ edit | delete | rename ]

Viewing: /snap/core22/2437/usr/lib/python3.10/lib2to3/fixes/fix_ws_comma.py

"""Fixer that changes 'a ,b' into 'a, b'.

This also changes '{a :b}' into '{a: b}', but does not touch other
uses of colons.  It does not touch other uses of whitespace.

"""

from .. import pytree
from ..pgen2 import token
from .. import fixer_base

class FixWsComma(fixer_base.BaseFix):

    explicit = True # The user must ask for this fixers

    PATTERN = """
    any<(not(',') any)+ ',' ((not(',') any)+ ',')* [not(',') any]>
    """

    COMMA = pytree.Leaf(token.COMMA, ",")
    COLON = pytree.Leaf(token.COLON, ":")
    SEPS = (COMMA, COLON)

    def transform(self, node, results):
        new = node.clone()
        comma = False
        for child in new.children:
            if child in self.SEPS:
                prefix = child.prefix
                if prefix.isspace() and "\n" not in prefix:
                    child.prefix = ""
                comma = True
            else:
                if comma:
                    prefix = child.prefix
                    if not prefix:
                        child.prefix = " "
                comma = False
        return new


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