Issue 2089 Expose value wrapper's inner values

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 12252 matching lines @@
 RUNTIME_FUNCTION(MaybeObject*, Runtime_DebugGetPrototype) {
   ASSERT(args.length() == 1);
 
   CONVERT_ARG_CHECKED(JSObject, obj, 0);
 
   // Use the __proto__ accessor.
   return Accessors::ObjectPrototype.getter(obj, NULL);
 }
 
 
+// Returns internal property PrimitiveValue value for standard objects
+// Boolean, Number and String (not for Date). Otherwise returns undefined.
+// args[0]: the object that possibly holds PrimitiveValue property.
+RUNTIME_FUNCTION(MaybeObject*, Runtime_DebugGetPrimitiveValue) {
+  ASSERT(args.length() == 1);
+
+  CONVERT_ARG_CHECKED(JSObject, obj, 0);
+
+  if (!obj->IsJSValue()) {
+    return isolate->heap()->undefined_value();
+  }
+  JSValue* value = JSValue::cast(obj);
+
+  return value->value();
+}

[Yang, 2012/04/17 12:48:44]

This seems to do the same as %_ValueOf (see FullCodeGenerator::EmitValueOf).

[Peter Rybin, 2012/04/18 12:36:09]

Done.

+
+
 // Patches script source (should be called upon BeforeCompile event).
 RUNTIME_FUNCTION(MaybeObject*, Runtime_DebugSetScriptSource) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 2);
 
   CONVERT_ARG_HANDLE_CHECKED(JSValue, script_wrapper, 0);
   Handle<String> source(String::cast(args[1]));
 
   RUNTIME_ASSERT(script_wrapper->value()->IsScript());
   Handle<Script> script(Script::cast(script_wrapper->value()));
@@ skipping 1071 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