ES6: Add support for Map/Set forEach

src/objects-printer.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 156 matching lines @@
       break;
     case JS_FUNCTION_PROXY_TYPE:
       JSFunctionProxy::cast(this)->JSFunctionProxyPrint(out);
       break;
     case JS_SET_TYPE:
       JSSet::cast(this)->JSSetPrint(out);
       break;
     case JS_MAP_TYPE:
       JSMap::cast(this)->JSMapPrint(out);
       break;
+    case JS_SET_ITERATOR_TYPE:
+      JSSetIterator::cast(this)->JSSetIteratorPrint(out);
+      break;
+    case JS_MAP_ITERATOR_TYPE:
+      JSMapIterator::cast(this)->JSMapIteratorPrint(out);
+      break;
     case JS_WEAK_MAP_TYPE:
       JSWeakMap::cast(this)->JSWeakMapPrint(out);
       break;
     case JS_WEAK_SET_TYPE:
       JSWeakSet::cast(this)->JSWeakSetPrint(out);
       break;
     case FOREIGN_TYPE:
       Foreign::cast(this)->ForeignPrint(out);
       break;
     case SHARED_FUNCTION_INFO_TYPE:
@@ skipping 528 matching lines @@
            sec()->IsSmi() ? Smi::cast(sec())->value() : -1);
   }
 }
 
 
 void JSProxy::JSProxyPrint(FILE* out) {
   HeapObject::PrintHeader(out, "JSProxy");
   PrintF(out, " - map = %p\n", reinterpret_cast<void*>(map()));
   PrintF(out, " - handler = ");
   handler()->Print(out);
-  PrintF(out, " - hash = ");
+  PrintF(out, "\n - hash = ");
   hash()->Print(out);
   PrintF(out, "\n");
 }
 
 
 void JSFunctionProxy::JSFunctionProxyPrint(FILE* out) {
   HeapObject::PrintHeader(out, "JSFunctionProxy");
   PrintF(out, " - map = %p\n", reinterpret_cast<void*>(map()));
   PrintF(out, " - handler = ");
   handler()->Print(out);
-  PrintF(out, " - call_trap = ");
+  PrintF(out, "\n - call_trap = ");
   call_trap()->Print(out);
-  PrintF(out, " - construct_trap = ");
+  PrintF(out, "\n - construct_trap = ");
   construct_trap()->Print(out);
   PrintF(out, "\n");
 }
 
 
 void JSSet::JSSetPrint(FILE* out) {
   HeapObject::PrintHeader(out, "JSSet");
   PrintF(out, " - map = %p\n", reinterpret_cast<void*>(map()));
   PrintF(out, " - table = ");
   table()->ShortPrint(out);
   PrintF(out, "\n");
 }
 
 
 void JSMap::JSMapPrint(FILE* out) {
   HeapObject::PrintHeader(out, "JSMap");
   PrintF(out, " - map = %p\n", reinterpret_cast<void*>(map()));
   PrintF(out, " - table = ");
   table()->ShortPrint(out);
   PrintF(out, "\n");
 }
 
 
+template<class Derived, class TableType>
+void OrderedHashTableIterator<Derived, TableType>::
+    OrderedHashTableIteratorPrint(FILE* out) {
+  PrintF(out, " - map = %p\n", reinterpret_cast<void*>(map()));
+  PrintF(out, " - table = ");
+  table()->ShortPrint(out);
+  PrintF(out, "\n - index = ");
+  index()->ShortPrint(out);
+  PrintF(out, "\n - count = ");
+  count()->ShortPrint(out);
+  PrintF(out, "\n - kind = ");
+  kind()->ShortPrint(out);
+  PrintF(out, "\n - next_iterator = ");
+  next_iterator()->ShortPrint(out);
+  PrintF(out, "\n - previous_iterator = ");
+  previous_iterator()->ShortPrint(out);
+  PrintF(out, "\n");
+}
+
+
+template void
+OrderedHashTableIterator<JSSetIterator,
+    OrderedHashSet>::OrderedHashTableIteratorPrint(FILE* out);
+
+
+template void
+OrderedHashTableIterator<JSMapIterator,
+    OrderedHashMap>::OrderedHashTableIteratorPrint(FILE* out);

[adamk, 2014/04/16 22:48:05]

I can't imagine you need these

+
+
+void JSSetIterator::JSSetIteratorPrint(FILE* out) {
+  HeapObject::PrintHeader(out, "JSSetIterator");
+  OrderedHashTableIteratorPrint(out);
+}
+
+
+void JSMapIterator::JSMapIteratorPrint(FILE* out) {
+  HeapObject::PrintHeader(out, "JSMapIterator");
+  OrderedHashTableIteratorPrint(out);
+}
+
+
 void JSWeakMap::JSWeakMapPrint(FILE* out) {
   HeapObject::PrintHeader(out, "JSWeakMap");
   PrintF(out, " - map = %p\n", reinterpret_cast<void*>(map()));
   PrintF(out, " - table = ");
   table()->ShortPrint(out);
   PrintF(out, "\n");
 }
 
 
 void JSWeakSet::JSWeakSetPrint(FILE* out) {
@@ skipping 455 matching lines @@
     }
   }
   PrintF(out, "\n");
 }
 
 
 #endif  // OBJECT_PRINT
 
 
 } }  // namespace v8::internal