Add future 0.18.2

lib/libpasteurize/fixes/fix_throw.py

@@ -0,0 +1,23 @@
+u"""Fixer for 'g.throw(E(V).with_traceback(T))' -> 'g.throw(E, V, T)'"""
+
+from lib2to3 import fixer_base
+from lib2to3.pytree import Node, Leaf
+from lib2to3.pgen2 import token
+from lib2to3.fixer_util import Comma
+
+class FixThrow(fixer_base.BaseFix):
+
+    PATTERN = u"""
+    power< any trailer< '.' 'throw' >
+        trailer< '(' args=power< exc=any trailer< '(' val=any* ')' >
+        trailer< '.' 'with_traceback' > trailer< '(' trc=any ')' > > ')' > >
+    """
+
+    def transform(self, node, results):
+        syms = self.syms
+        exc, val, trc = (results[u"exc"], results[u"val"], results[u"trc"])
+        val = val[0] if val else Leaf(token.NAME, u"None")
+        val.prefix = trc.prefix = u" "
+        kids = [exc.clone(), Comma(), val.clone(), Comma(), trc.clone()]
+        args = results[u"args"]
+        args.children = kids