[proxies] Expose proxies in the API

src/builtins.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/builtins.h"
 
 #include "src/api.h"
 #include "src/api-natives.h"
 #include "src/arguments.h"
 #include "src/base/once.h"
@@ skipping 1883 matching lines @@
   Handle<Object> object = args.at<Object>(0);
   Handle<String> result;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, result, JSObject::ObjectProtoToString(isolate, object));
   return *result;
 }
 
 
 namespace {
 
-// ES6 section 9.5.15 ProxyCreate (target, handler)
-MaybeHandle<JSProxy> ProxyCreate(Isolate* isolate, Handle<Object> target,
-                                 Handle<Object> handler) {
-  if (!target->IsJSReceiver()) {
-    THROW_NEW_ERROR(isolate, NewTypeError(MessageTemplate::kProxyNonObject),
-                    JSProxy);
-  }
-  if (target->IsJSProxy() && JSProxy::cast(*target)->IsRevoked()) {
-    THROW_NEW_ERROR(isolate,
-                    NewTypeError(MessageTemplate::kProxyHandlerOrTargetRevoked),
-                    JSProxy);
-  }
-  if (!handler->IsJSReceiver()) {
-    THROW_NEW_ERROR(isolate, NewTypeError(MessageTemplate::kProxyNonObject),
-                    JSProxy);
-  }
-  if (handler->IsJSProxy() && JSProxy::cast(*handler)->IsRevoked()) {
-    THROW_NEW_ERROR(isolate,
-                    NewTypeError(MessageTemplate::kProxyHandlerOrTargetRevoked),
-                    JSProxy);
-  }
-  return isolate->factory()->NewJSProxy(Handle<JSReceiver>::cast(target),
-                                        Handle<JSReceiver>::cast(handler));
-}
-
 }  // namespace
 
 
 // ES6 section 26.2.1.1 Proxy ( target, handler ) for the [[Call]] case.
 BUILTIN(ProxyConstructor) {
   HandleScope scope(isolate);
   THROW_NEW_ERROR_RETURN_FAILURE(
       isolate,
       NewTypeError(MessageTemplate::kConstructorNotFunction,
                    isolate->factory()->NewStringFromAsciiChecked("Proxy")));
@@ skipping 14 matching lines @@
   if (args.length() < 3) {
     handler = isolate->factory()->undefined_value();
   } else {
     handler = args.at<Object>(2);
   }
   // The ConstructStub is executed in the context of the caller, so we need
   // to enter the callee context first before raising an exception.
   isolate->set_context(args.target()->context());
   Handle<JSProxy> result;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result,
-                                     ProxyCreate(isolate, target, handler));
+                                     JSProxy::New(isolate, target, handler));
   return *result;
 }
 
 
 // -----------------------------------------------------------------------------
 // Throwers for restricted function properties and strict arguments object
 // properties
 
 
 BUILTIN(RestrictedFunctionPropertiesThrower) {
@@ skipping 616 matching lines @@
 BUILTIN_LIST_C(DEFINE_BUILTIN_ACCESSOR_C)
 BUILTIN_LIST_A(DEFINE_BUILTIN_ACCESSOR_A)
 BUILTIN_LIST_H(DEFINE_BUILTIN_ACCESSOR_H)
 BUILTIN_LIST_DEBUG_A(DEFINE_BUILTIN_ACCESSOR_A)
 #undef DEFINE_BUILTIN_ACCESSOR_C
 #undef DEFINE_BUILTIN_ACCESSOR_A
 
 
 }  // namespace internal
 }  // namespace v8