Merged revisions 65053-65054 via svnmerge from

svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

........
  r65053 | benjamin.peterson | 2008-07-16 21:04:12 -0500 (Wed, 16 Jul 2008) | 1 line

  massive optimizations for 2to3 (especially fix_imports) from Nick Edds
........
  r65054 | benjamin.peterson | 2008-07-16 21:05:09 -0500 (Wed, 16 Jul 2008) | 1 line

  normalize whitespace
........

1 files changed, 19 insertions, 4 deletions

diff --git a/Lib/lib2to3/pytree.py b/Lib/lib2to3/pytree.py
index 18a2de34f2..cd988ac5b8 100644
--- a/Lib/lib2to3/pytree.py
+++ b/Lib/lib2to3/pytree.py
@@ -652,20 +652,35 @@ class WildcardPattern(BasePattern):
                 if self.name:
                     r[self.name] = nodes[:count]
                 yield count, r
+        elif self.name == "bare_name":
+            yield self._bare_name_matches(nodes)
         else:
             for count, r in self._recursive_matches(nodes, 0):
                 if self.name:
                     r[self.name] = nodes[:count]
                 yield count, r
 
+    def _bare_name_matches(self, nodes):
+        """Special optimized matcher for bare_name."""
+        count = 0
+        r = {}
+        done = False
+        max = len(nodes)
+        while not done and count < max:
+            done = True
+            for leaf in self.content:
+                if leaf[0].match(nodes[count], r):
+                    count += 1
+                    done = False
+                    break
+        r[self.name] = nodes[:count]
+        return count, r
+
     def _recursive_matches(self, nodes, count):
         """Helper to recursively yield the matches."""
         assert self.content is not None
         if count >= self.min:
-            r = {}
-            if self.name:
-                r[self.name] = nodes[:0]
-            yield 0, r
+            yield 0, {}
         if count < self.max:
             for alt in self.content:
                 for c0, r0 in generate_matches(alt, nodes):