diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/python-win32-2.6.1/lib/lib2to3/fixes/fix_throw.py --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/python-win32-2.6.1/lib/lib2to3/fixes/fix_throw.py Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,56 @@ +"""Fixer for generator.throw(E, V, T). + +g.throw(E) -> g.throw(E) +g.throw(E, V) -> g.throw(E(V)) +g.throw(E, V, T) -> g.throw(E(V).with_traceback(T)) + +g.throw("foo"[, V[, T]]) will warn about string exceptions.""" +# Author: Collin Winter + +# Local imports +from .. import pytree +from ..pgen2 import token +from .. import fixer_base +from ..fixer_util import Name, Call, ArgList, Attr, is_tuple + +class FixThrow(fixer_base.BaseFix): + + PATTERN = """ + power< any trailer< '.' 'throw' > + trailer< '(' args=arglist< exc=any ',' val=any [',' tb=any] > ')' > + > + | + power< any trailer< '.' 'throw' > trailer< '(' exc=any ')' > > + """ + + def transform(self, node, results): + syms = self.syms + + exc = results["exc"].clone() + if exc.type is token.STRING: + self.cannot_convert(node, "Python 3 does not support string exceptions") + return + + # Leave "g.throw(E)" alone + val = results.get("val") + if val is None: + return + + val = val.clone() + if is_tuple(val): + args = [c.clone() for c in val.children[1:-1]] + else: + val.set_prefix("") + args = [val] + + throw_args = results["args"] + + if "tb" in results: + tb = results["tb"].clone() + tb.set_prefix("") + + e = Call(exc, args) + with_tb = Attr(e, Name('with_traceback')) + [ArgList([tb])] + throw_args.replace(pytree.Node(syms.power, with_tb)) + else: + throw_args.replace(Call(exc, args))