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// 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"
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->slot_count();
slots_.reserve(slot_count);
FeedbackMetadataIterator iter(vector->metadata());
while (iter.HasNext()) {
FeedbackVectorSlot slot = iter.Next();
slots_.push_back(slot);
}
}
Handle<FeedbackVector> vector() { return vector_; }
// Returns slot identifier by numerical index.
FeedbackVectorSlot 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<FeedbackVectorSlot> slots_;
};
template <typename Spec>
Handle<FeedbackVector> NewFeedbackVector(Isolate* isolate, Spec* spec) {
Handle<FeedbackMetadata> metadata = FeedbackMetadata::New(isolate, spec);
return FeedbackVector::New(isolate, metadata);
}
} // namespace internal
} // namespace v8
#endif
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