[pypy-commit] pypy length-hint: use the more official interface instead of hacks

[fijal]

Author: Maciej Fijalkowski <fijall at gmail.com>
Branch: length-hint
Changeset: r58909:3d0895a129c7
Date: 2012-11-14 13:54 +0100
http://bitbucket.org/pypy/pypy/changeset/3d0895a129c7/

Log:	use the more official interface instead of hacks

diff --git a/pypy/module/__builtin__/app_functional.py b/pypy/module/__builtin__/app_functional.py
--- a/pypy/module/__builtin__/app_functional.py
+++ b/pypy/module/__builtin__/app_functional.py
@@ -4,7 +4,7 @@
 """
 from __future__ import with_statement
 import operator
-from __pypy__ import resizelist_hint
+from __pypy__ import resizelist_hint, newlist_hint
 
 # ____________________________________________________________
 
@@ -109,15 +109,8 @@
             else:
                 return result
 
-def _newlist_hint(length_hint):
-    """Return an empty list with an underlying capacity of length_hint"""
-    result = []
-    resizelist_hint(result, length_hint)
-    return result
-
 class _ManagedNewlistHint(object):
-
-    """Context manager returning a _newlist_hint upon entry.
+    """ Context manager returning a newlist_hint upon entry.
 
     Upon exit the list's underlying capacity will be cut back to match
     its length if necessary (incase the initial length_hint was too
@@ -126,7 +119,7 @@
 
     def __init__(self, length_hint):
         self.length_hint = length_hint
-        self.list = _newlist_hint(length_hint)
+        self.list = newlist_hint(length_hint)
 
     def __enter__(self):
         return self.list
@@ -183,7 +176,7 @@
     if func is bool and type(string) is str_type:
         return string
     length = len(string)
-    result = _newlist_hint(length)
+    result = newlist_hint(length)
     for i in range(length):
         # You must call __getitem__ on the strings, simply iterating doesn't
         # work :/
@@ -196,7 +189,7 @@
 
 def _filter_tuple(func, seq):
     length = len(seq)
-    result = _newlist_hint(length)
+    result = newlist_hint(length)
     for i in range(length):
         # Again, must call __getitem__, at least there are tests.
         item = seq[i]