Chore third party libs (use stdlib whenever possible) (google#145)

* move functools.py to stdlib
* move md5.py to stdlib
*  move re.py re_tests.py sre_*.py to stdlib

Author: S-YOU

third_party/pypy/md5.py

@@ -0,0 +1,15 @@
+# $Id$
+#
+#  Copyright (C) 2005   Gregory P. Smith ([email protected])
+#  Licensed to PSF under a Contributor Agreement.
+
+# import warnings
+# warnings.warn("the md5 module is deprecated; use hashlib instead",
+#                 DeprecationWarning, 2)
+
+# from hashlib import md5
+import _md5
+
+new = _md5.new
+md5 = _md5.new
+digest_size = 16

third_party/pypy/functools.py renamed to third_party/stdlib/functools.py

@@ -104,6 +104,10 @@
 import sre_compile
 import sre_parse
 
+# try:
+#     import _locale
+# except ImportError:
+#     _locale = None
 _locale = None
 BRANCH = "branch"
 SUBPATTERN = "subpattern"
@@ -194,10 +198,8 @@ def compile(pattern, flags=0):
 
 def purge():
     "Clear the regular expression cache"
-    # _cache.clear()
-    # _cache_repl.clear()
-    globals()['_cache'] = {}
-    globals()['_cache_repl'] = {}
+    _cache.clear()
+    _cache_repl.clear()
 
 def template(pattern, flags=0):
     "Compile a template pattern, returning a pattern object"
@@ -252,8 +254,7 @@ def _compile(*key):
         raise error, v # invalid expression
     if not bypass_cache:
         if len(_cache) >= _MAXCACHE:
-            # _cache.clear()
-            globals()['_cache'] = {}
+            _cache.clear()
         if p.flags & LOCALE:
             if not _locale:
                 return p
@@ -274,8 +275,7 @@ def _compile_repl(*key):
     except error, v:
         raise error, v # invalid expression
     if len(_cache_repl) >= _MAXCACHE:
-        # _cache_repl.clear()
-        globals()['_cache_repl'] = {}
+        _cache_repl.clear()
     _cache_repl[key] = p
     return p
 

third_party/stdlib/md5.py

@@ -10,16 +10,14 @@
 
 """Internal support module for sre"""
 
-# TODO: Support from foo import * syntax.
-import sre_constants
-for name in sre_constants.__all__:
-  globals()[name] = getattr(sre_constants, name)
-
 # XXX: show string offset and offending character for all errors
 
 import sys
 
-newdict = lambda _ : {}
+# from sre_constants import *
+import sre_constants
+for name in sre_constants.__all__:
+  globals()[name] = getattr(sre_constants, name)
 
 SPECIAL_CHARS = ".\\[{()*+?^$|"
 REPEAT_CHARS = "*+?{"
@@ -73,7 +71,7 @@ def __init__(self):
         self.flags = 0
         self.open = []
         self.groups = 1
-        self.groupdict = newdict("module")
+        self.groupdict = {}
         self.lookbehind = 0
 
     def opengroup(self, name=None):