Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef V8_TEST_FEEDBACK_VECTOR_H_ |
| 6 | #define V8_TEST_FEEDBACK_VECTOR_H_ |
| 7 | |
| 8 | #include "src/objects.h" |
| 9 | |
| 10 | |
| 11 | namespace v8 { |
| 12 | namespace internal { |
| 13 | |
| 14 | // Helper class that allows to write tests in a slot size independent manner. |
| 15 | // Use helper.slot(X) to get X'th slot identifier. |
| 16 | class FeedbackVectorHelper { |
| 17 | public: |
| 18 | explicit FeedbackVectorHelper(Handle<TypeFeedbackVector> vector) |
| 19 | : vector_(vector) { |
| 20 | int slot_count = vector->slot_count(); |
| 21 | slots_.reserve(slot_count); |
| 22 | TypeFeedbackMetadataIterator iter(vector->metadata()); |
| 23 | while (iter.HasNext()) { |
| 24 | FeedbackVectorSlot slot = iter.Next(); |
| 25 | slots_.push_back(slot); |
| 26 | } |
| 27 | } |
| 28 | |
| 29 | Handle<TypeFeedbackVector> vector() { return vector_; } |
| 30 | |
| 31 | // Returns slot identifier by numerical index. |
| 32 | FeedbackVectorSlot slot(int index) const { return slots_[index]; } |
| 33 | |
| 34 | // Returns the number of slots in the feedback vector. |
| 35 | int slot_count() const { return static_cast<int>(slots_.size()); } |
| 36 | |
| 37 | private: |
| 38 | Handle<TypeFeedbackVector> vector_; |
| 39 | std::vector<FeedbackVectorSlot> slots_; |
| 40 | }; |
| 41 | |
| 42 | template <typename Spec> |
| 43 | Handle<TypeFeedbackVector> NewTypeFeedbackVector(Isolate* isolate, Spec* spec) { |
| 44 | Handle<TypeFeedbackMetadata> metadata = |
| 45 | TypeFeedbackMetadata::New(isolate, spec); |
| 46 | return TypeFeedbackVector::New(isolate, metadata); |
| 47 | } |
| 48 | |
| 49 | |
| 50 | } // namespace internal |
| 51 | } // namespace v8 |
| 52 | |
| 53 | #endif |