ES6 symbols: enable symbols as weak map keys

src/runtime.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 881 matching lines @@
   ASSERT(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(JSWeakMap, weakmap, 0);
   return WeakMapInitialize(isolate, weakmap);
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_WeakMapGet) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(JSWeakMap, weakmap, 0);
-  CONVERT_ARG_HANDLE_CHECKED(JSReceiver, key, 1);
+  CONVERT_ARG_HANDLE_CHECKED(Object, key, 1);
   Handle<ObjectHashTable> table(ObjectHashTable::cast(weakmap->table()));
   Handle<Object> lookup(table->Lookup(*key), isolate);
   return lookup->IsTheHole() ? isolate->heap()->undefined_value() : *lookup;
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_WeakMapHas) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(JSWeakMap, weakmap, 0);
-  CONVERT_ARG_HANDLE_CHECKED(JSReceiver, key, 1);
+  CONVERT_ARG_HANDLE_CHECKED(Object, key, 1);
   Handle<ObjectHashTable> table(ObjectHashTable::cast(weakmap->table()));
   Handle<Object> lookup(table->Lookup(*key), isolate);
   return isolate->heap()->ToBoolean(!lookup->IsTheHole());
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_WeakMapDelete) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(JSWeakMap, weakmap, 0);
-  CONVERT_ARG_HANDLE_CHECKED(JSReceiver, key, 1);
+  CONVERT_ARG_HANDLE_CHECKED(Object, key, 1);
   Handle<ObjectHashTable> table(ObjectHashTable::cast(weakmap->table()));
   Handle<Object> lookup(table->Lookup(*key), isolate);
   Handle<ObjectHashTable> new_table =
       PutIntoObjectHashTable(table, key, isolate->factory()->the_hole_value());
   weakmap->set_table(*new_table);
   return isolate->heap()->ToBoolean(!lookup->IsTheHole());
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_WeakMapSet) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 3);
   CONVERT_ARG_HANDLE_CHECKED(JSWeakMap, weakmap, 0);
-  CONVERT_ARG_HANDLE_CHECKED(JSReceiver, key, 1);
+  CONVERT_ARG_HANDLE_CHECKED(Object, key, 1);
   Handle<Object> value(args[2], isolate);
   Handle<ObjectHashTable> table(ObjectHashTable::cast(weakmap->table()));
   Handle<ObjectHashTable> new_table = PutIntoObjectHashTable(table, key, value);
   weakmap->set_table(*new_table);
   return isolate->heap()->undefined_value();
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_ClassOf) {
   NoHandleAllocation ha(isolate);
@@ skipping 12365 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal