[pypy-commit] lang-js default: optimized property access in W_Object

[stepahn]

Author: Stephan <stephan at stzal.com>
Branch: 
Changeset: r135:2cde4c06fb6d
Date: 2011-10-06 15:20 +0200
http://bitbucket.org/pypy/lang-js/changeset/2cde4c06fb6d/

Log:	optimized property access in W_Object

diff --git a/js/jsobj.py b/js/jsobj.py
--- a/js/jsobj.py
+++ b/js/jsobj.py
@@ -213,21 +213,22 @@
         return self.Prototype.Get(ctx, P) # go down the prototype chain
 
     def CanPut(self, P):
-        if P in self.propdict:
-            if self.propdict[P].flags & RO: return False
+        property = self.propdict.get(P, None)
+        if property is not None:
+            if property.flags & RO: return False
             return True
         if self.Prototype is None: return True
         return self.Prototype.CanPut(P)
 
     def Put(self, ctx, P, V, flags = 0):
+        property = self.propdict.get(P, None)
+        if property is not None:
+            property.value = V
+            property.flags |= flags
+            return
 
         if not self.CanPut(P): return
-        if P in self.propdict:
-            prop = self.propdict[P]
-            prop.value = V
-            prop.flags |= flags
-        else:
-            self.propdict[P] = Property(P, V, flags = flags)
+        self.propdict[P] = Property(P, V, flags = flags)
 
     def HasProperty(self, P):
         if P in self.propdict: return True