ES6: Implement WeakSet

src/objects-debug.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 163 matching lines @@
       break;
     case JS_SET_TYPE:
       JSSet::cast(this)->JSSetVerify();
       break;
     case JS_MAP_TYPE:
       JSMap::cast(this)->JSMapVerify();
       break;
     case JS_WEAK_MAP_TYPE:
       JSWeakMap::cast(this)->JSWeakMapVerify();
       break;
+    case JS_WEAK_SET_TYPE:
+      JSWeakSet::cast(this)->JSWeakSetVerify();
+      break;
     case JS_REGEXP_TYPE:
       JSRegExp::cast(this)->JSRegExpVerify();
       break;
     case FILLER_TYPE:
       break;
     case JS_PROXY_TYPE:
       JSProxy::cast(this)->JSProxyVerify();
       break;
     case JS_FUNCTION_PROXY_TYPE:
       JSFunctionProxy::cast(this)->JSFunctionProxyVerify();
@@ skipping 498 matching lines @@
 
 
 void JSWeakMap::JSWeakMapVerify() {
   CHECK(IsJSWeakMap());
   JSObjectVerify();
   VerifyHeapPointer(table());
   CHECK(table()->IsHashTable() || table()->IsUndefined());
 }
 
 
+void JSWeakSet::JSWeakSetVerify() {
+  CHECK(IsJSWeakSet());
+  JSObjectVerify();
+  VerifyHeapPointer(table());
+  CHECK(table()->IsHashTable() || table()->IsUndefined());
+}
+
+
 void JSRegExp::JSRegExpVerify() {
   JSObjectVerify();
   CHECK(data()->IsUndefined() || data()->IsFixedArray());
   switch (TypeTag()) {
     case JSRegExp::ATOM: {
       FixedArray* arr = FixedArray::cast(data());
       CHECK(arr->get(JSRegExp::kAtomPatternIndex)->IsString());
       break;
     }
     case JSRegExp::IRREGEXP: {
@@ skipping 446 matching lines @@
   for (int i = 0; i < number_of_transitions(); ++i) {
     if (!CheckOneBackPointer(current_map, GetTarget(i))) return false;
   }
   return true;
 }
 
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal