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-rw-r--r--lib/python2.7/lib2to3/fixes/fix_raise.py90
1 files changed, 0 insertions, 90 deletions
diff --git a/lib/python2.7/lib2to3/fixes/fix_raise.py b/lib/python2.7/lib2to3/fixes/fix_raise.py
deleted file mode 100644
index b958ba0..0000000
--- a/lib/python2.7/lib2to3/fixes/fix_raise.py
+++ /dev/null
@@ -1,90 +0,0 @@
-"""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)