// 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. #ifndef V8_TEST_FEEDBACK_VECTOR_H_ #define V8_TEST_FEEDBACK_VECTOR_H_ #include "src/objects.h" #include "src/objects/shared-function-info.h" namespace v8 { namespace internal { // Helper class that allows to write tests in a slot size independent manner. // Use helper.slot(X) to get X'th slot identifier. class FeedbackVectorHelper { public: explicit FeedbackVectorHelper(Handle<FeedbackVector> vector) : vector_(vector) { int slot_count = vector->length(); slots_.reserve(slot_count); FeedbackMetadataIterator iter(vector->metadata()); while (iter.HasNext()) { FeedbackSlot slot = iter.Next(); slots_.push_back(slot); } } Handle<FeedbackVector> vector() { return vector_; } // Returns slot identifier by numerical index. FeedbackSlot slot(int index) const { return slots_[index]; } // Returns the number of slots in the feedback vector. int slot_count() const { return static_cast<int>(slots_.size()); } private: Handle<FeedbackVector> vector_; std::vector<FeedbackSlot> slots_; }; template <typename Spec> Handle<FeedbackVector> NewFeedbackVector(Isolate* isolate, Spec* spec) { Handle<FeedbackMetadata> metadata = FeedbackMetadata::New(isolate, spec); Handle<SharedFunctionInfo> shared = isolate->factory()->NewSharedFunctionInfo( isolate->factory()->empty_string(), MaybeHandle<Code>(), false); shared->set_feedback_metadata(*metadata); return FeedbackVector::New(isolate, shared); } template <typename Spec> Handle<FeedbackMetadata> NewFeedbackMetadata(Isolate* isolate, Spec* spec) { return FeedbackMetadata::New(isolate, spec); } } // namespace internal } // namespace v8 #endif