ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

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

"""Fixer for 'raise E, V, T'

raise         -> raise
raise E       -> raise E
raise E, V    -> raise E(V)
raise E, V, T -> raise E(V).with_traceback(T)
raise E, None, T -> raise E.with_traceback(T)

raise (((E, E'), E''), E'''), V -> raise E(V)
raise "foo", V, T               -> warns about string exceptions

CAVEATS:
1) "raise E, V" will be incorrectly translated if V is an exception
   instance. The correct Python 3 idiom is

raise E from V

but since we can't detect instance-hood by syntax alone and since
   any client code would have to be changed as well, we don't automate
   this.
"""
# Author: Collin Winter

# Local imports
from .. import pytree
from ..pgen2 import token
from .. import fixer_base
from ..fixer_util import Name, Call, Attr, ArgList, is_tuple

class FixRaise(fixer_base.BaseFix):

BM_compatible = True
    PATTERN = """
    raise_stmt< 'raise' exc=any [',' val=any [',' tb=any]] >
    """

def transform(self, node, results):
        syms = self.syms

exc = results["exc"].clone()
        if exc.type == token.STRING:
            msg = "Python 3 does not support string exceptions"
            self.cannot_convert(node, msg)
            return

# Python 2 supports
        #  raise ((((E1, E2), E3), E4), E5), V
        # as a synonym for
        #  raise E1, V
        # Since Python 3 will not support this, we recurse down any tuple
        # literals, always taking the first element.
        if is_tuple(exc):
            while is_tuple(exc):
                # exc.children[1:-1] is the unparenthesized tuple
                # exc.children[1].children[0] is the first element of the tuple
                exc = exc.children[1].children[0].clone()
            exc.prefix = u" "

if "val" not in results:
            # One-argument raise
            new = pytree.Node(syms.raise_stmt, [Name(u"raise"), exc])
            new.prefix = node.prefix
            return new

val = results["val"].clone()
        if is_tuple(val):
            args = [c.clone() for c in val.children[1:-1]]
        else:
            val.prefix = u""
            args = [val]

if "tb" in results:
            tb = results["tb"].clone()
            tb.prefix = u""

e = exc
            # If there's a traceback and None is passed as the value, then don't
            # add a call, since the user probably just wants to add a
            # traceback. See issue #9661.
            if val.type != token.NAME or val.value != u"None":
                e = Call(exc, args)
            with_tb = Attr(e, Name(u'with_traceback')) + [ArgList([tb])]
            new = pytree.Node(syms.simple_stmt, [Name(u"raise")] + with_tb)
            new.prefix = node.prefix
            return new
        else:
            return pytree.Node(syms.raise_stmt,
                               [Name(u"raise"), Call(exc, args)],
                               prefix=node.prefix)

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