Preliminary Harmony weak maps API implementation.

src/objects.cc

 // Copyright 2011 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 944 matching lines @@
 }
 
 
 void JSObject::JSObjectShortPrint(StringStream* accumulator) {
   switch (map()->instance_type()) {
     case JS_ARRAY_TYPE: {
       double length = JSArray::cast(this)->length()->Number();
       accumulator->Add("<JS array[%u]>", static_cast<uint32_t>(length));
       break;
     }
+    case JS_WEAK_MAP_TYPE: {
+      int elements = JSWeakMap::cast(this)->table()->NumberOfElements();
+      accumulator->Add("<JS WeakMap[%d]>", elements);
+      break;
+    }
     case JS_REGEXP_TYPE: {
       accumulator->Add("<JS RegExp>");
       break;
     }
     case JS_FUNCTION_TYPE: {
       Object* fun_name = JSFunction::cast(this)->shared()->name();
       bool printed = false;
       if (fun_name->IsString()) {
         String* str = String::cast(fun_name);
         if (str->length() > 0) {
@@ skipping 210 matching lines @@
   switch (type) {
     case FIXED_ARRAY_TYPE:
       FixedArray::BodyDescriptor::IterateBody(this, object_size, v);
       break;
     case FIXED_DOUBLE_ARRAY_TYPE:
       break;
     case JS_OBJECT_TYPE:
     case JS_CONTEXT_EXTENSION_OBJECT_TYPE:
     case JS_VALUE_TYPE:
     case JS_ARRAY_TYPE:
+    case JS_WEAK_MAP_TYPE:
     case JS_REGEXP_TYPE:
     case JS_GLOBAL_PROXY_TYPE:
     case JS_GLOBAL_OBJECT_TYPE:
     case JS_BUILTINS_OBJECT_TYPE:
     case JS_MESSAGE_OBJECT_TYPE:
       JSObject::BodyDescriptor::IterateBody(this, object_size, v);
       break;
     case JS_FUNCTION_TYPE:
       reinterpret_cast<JSFunction*>(this)
           ->JSFunctionIterateBody(object_size, v);
@@ skipping 10878 matching lines @@
   if (break_point_objects()->IsUndefined()) return 0;
   // Single beak point.
   if (!break_point_objects()->IsFixedArray()) return 1;
   // Multiple break points.
   return FixedArray::cast(break_point_objects())->length();
 }
 #endif
 
 
 } }  // namespace v8::internal