Fix return values for Harmony map and set operations.

R=rossberg@chromium.org
BUG=chromium:132741,chromium:132742
TEST=mjsunit/harmony/collections

Review URL: https://chromiumcodereview.appspot.com/10573011

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11869 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/collection.js

@@ -79,7 +79,12 @@ function SetDelete(key) {
   if (IS_UNDEFINED(key)) {
     key = undefined_sentinel;
   }
-  return %SetDelete(this, key);
+  if (%SetHas(this, key)) {
+    %SetDelete(this, key);
+    return true;
+  } else {
+    return false;
+  }
 }
 
 

src/runtime.cc

@@ -754,7 +754,7 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_SetAdd) {
   Handle<ObjectHashSet> table(ObjectHashSet::cast(holder->table()));
   table = ObjectHashSetAdd(table, key);
   holder->set_table(*table);
-  return isolate->heap()->undefined_symbol();
+  return isolate->heap()->undefined_value();
 }
 
 
@@ -776,7 +776,7 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_SetDelete) {
   Handle<ObjectHashSet> table(ObjectHashSet::cast(holder->table()));
   table = ObjectHashSetRemove(table, key);
   holder->set_table(*table);
-  return isolate->heap()->undefined_symbol();
+  return isolate->heap()->undefined_value();
 }
 
 
@@ -808,7 +808,7 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_MapSet) {
   Handle<ObjectHashTable> table(ObjectHashTable::cast(holder->table()));
   Handle<ObjectHashTable> new_table = PutIntoObjectHashTable(table, key, value);
   holder->set_table(*new_table);
-  return *value;
+  return isolate->heap()->undefined_value();
 }
 
 
@@ -842,7 +842,7 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_WeakMapSet) {
   Handle<ObjectHashTable> table(ObjectHashTable::cast(weakmap->table()));
   Handle<ObjectHashTable> new_table = PutIntoObjectHashTable(table, key, value);
   weakmap->set_table(*new_table);
-  return *value;
+  return isolate->heap()->undefined_value();
 }
 
 

test/mjsunit/harmony/collections.js

@@ -65,9 +65,11 @@ TestInvalidCalls(new WeakMap);
 // Test expected behavior for Sets
 function TestSet(set, key) {
   assertFalse(set.has(key));
-  set.add(key);
+  assertSame(undefined, set.add(key));
   assertTrue(set.has(key));
-  set.delete(key);
+  assertTrue(set.delete(key));
+  assertFalse(set.has(key));
+  assertFalse(set.delete(key));
   assertFalse(set.has(key));
 }
 function TestSetBehavior(set) {
@@ -87,7 +89,7 @@ TestSetBehavior(new Set);
 
 // Test expected mapping behavior for Maps and WeakMaps
 function TestMapping(map, key, value) {
-  map.set(key, value);
+  assertSame(undefined, map.set(key, value));
   assertSame(value, map.get(key));
 }
 function TestMapBehavior1(m) {