ꦫꦣꦺꦤ꧀ꦄꦤ꧀ꦠꦱꦺꦤ

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

"""Fixer for except statements with named exceptions.

The following cases will be converted:

- "except E, T:" where T is a name:

except E as T:

- "except E, T:" where T is not a name, tuple or list:

except E as t:
            T = t

This is done because the target of an "except" clause must be a
    name.

- "except E, T:" where T is a tuple or list literal:

except E as t:
            T = t.args
"""
# Author: Collin Winter

# Local imports
from .. import pytree
from ..pgen2 import token
from .. import fixer_base
from ..fixer_util import Assign, Attr, Name, is_tuple, is_list, syms

def find_excepts(nodes):
    for i, n in enumerate(nodes):
        if n.type == syms.except_clause:
            if n.children[0].value == u'except':
                yield (n, nodes[i+2])

class FixExcept(fixer_base.BaseFix):
    BM_compatible = True

PATTERN = """
    try_stmt< 'try' ':' (simple_stmt | suite)
                  cleanup=(except_clause ':' (simple_stmt | suite))+
                  tail=(['except' ':' (simple_stmt | suite)]
                        ['else' ':' (simple_stmt | suite)]
                        ['finally' ':' (simple_stmt | suite)]) >
    """

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

tail = [n.clone() for n in results["tail"]]

try_cleanup = [ch.clone() for ch in results["cleanup"]]
        for except_clause, e_suite in find_excepts(try_cleanup):
            if len(except_clause.children) == 4:
                (E, comma, N) = except_clause.children[1:4]
                comma.replace(Name(u"as", prefix=u" "))

if N.type != token.NAME:
                    # Generate a new N for the except clause
                    new_N = Name(self.new_name(), prefix=u" ")
                    target = N.clone()
                    target.prefix = u""
                    N.replace(new_N)
                    new_N = new_N.clone()

# Insert "old_N = new_N" as the first statement in
                    #  the except body. This loop skips leading whitespace
                    #  and indents
                    #TODO(cwinter) suite-cleanup
                    suite_stmts = e_suite.children
                    for i, stmt in enumerate(suite_stmts):
                        if isinstance(stmt, pytree.Node):
                            break

# The assignment is different if old_N is a tuple or list
                    # In that case, the assignment is old_N = new_N.args
                    if is_tuple(N) or is_list(N):
                        assign = Assign(target, Attr(new_N, Name(u'args')))
                    else:
                        assign = Assign(target, new_N)

#TODO(cwinter) stopgap until children becomes a smart list
                    for child in reversed(suite_stmts[:i]):
                        e_suite.insert_child(0, child)
                    e_suite.insert_child(i, assign)
                elif N.prefix == u"":
                    # No space after a comma is legal; no space after "as",
                    # not so much.
                    N.prefix = u" "

#TODO(cwinter) fix this when children becomes a smart list
        children = [c.clone() for c in node.children[:3]] + try_cleanup + tail
        return pytree.Node(node.type, children)

[+] ..
[-] 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]