chromium/v8/src/runtime/runtime-forin.cc

// Copyright 2015 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/execution/isolate-inl.h"
#include "src/heap/factory.h"
#include "src/heap/heap-inl.h"  // For ToBoolean. TODO(jkummerow): Drop.
#include "src/objects/keys.h"
#include "src/objects/module.h"
#include "src/objects/objects-inl.h"

namespace v8 {
namespace internal {

namespace {

// Returns either a FixedArray or, if the given {receiver} has an enum cache
// that contains all enumerable properties of the {receiver} and its prototypes
// have none, the map of the {receiver}. This is used to speed up the check for
// deletions during a for-in.
MaybeHandle<HeapObject> Enumerate(Isolate* isolate,
                                  Handle<JSReceiver> receiver) { … }

// This is a slight modification of JSReceiver::HasProperty, dealing with
// the oddities of JSProxy and JSModuleNamespace in for-in filter.
MaybeHandle<Object> HasEnumerableProperty(Isolate* isolate,
                                          Handle<JSReceiver> receiver,
                                          Handle<Object> key) { … }

}  // namespace


RUNTIME_FUNCTION(Runtime_ForInEnumerate) { … }


RUNTIME_FUNCTION(Runtime_ForInHasProperty) { … }

}  // namespace internal
}  // namespace v8