[pypy-svn] rev 2629 - pypy/trunk/src/pypy/module

[pmaupin at codespeak.net]

Author: pmaupin
Date: Sat Dec 20 11:31:32 2003
New Revision: 2629

Modified:
   pypy/trunk/src/pypy/module/builtin.py
Log:
Added intern() implementation

Modified: pypy/trunk/src/pypy/module/builtin.py
==============================================================================
--- pypy/trunk/src/pypy/module/builtin.py	(original)
+++ pypy/trunk/src/pypy/module/builtin.py	Sat Dec 20 11:31:32 2003
@@ -698,13 +698,13 @@
             return result
 
     def app_intern(self, s):
-        """
-        We don't have a string table, making intern a null operation.
-        This is here for backwards compatibility.
-        """
         if not isinstance(s, str):
             raise TypeError("intern() argument 1 must be string.")
-        return s
+        try:
+            t = self._stringtable
+        except AttributeError:
+            t = self._stringtable = {}
+        return t.setdefault(s,s)
 
     def app_copyright(self):
         print 'Copyright 2002-2004 Pypy development team.\nAll rights reserved.\nFor further information see http://www.codespaek.net/pypy.\nSome materials may have a different copyright.\nIn these cases, this is explicitly noted in the source code file.'