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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.
#include "src/interpreter/bytecode-array-random-iterator.h"
#include "src/objects/code-inl.h"
#include "src/objects/objects-inl.h"
namespace v8 {
namespace internal {
namespace interpreter {
BytecodeArrayRandomIterator::BytecodeArrayRandomIterator(
std::unique_ptr<AbstractBytecodeArray> bytecode_array, Zone* zone)
: BytecodeArrayAccessor(std::move(bytecode_array), 0), offsets_(zone) {
Initialize();
}
BytecodeArrayRandomIterator::BytecodeArrayRandomIterator(
Handle<BytecodeArray> bytecode_array, Zone* zone)
: BytecodeArrayAccessor(bytecode_array, 0), offsets_(zone) {
Initialize();
}
void BytecodeArrayRandomIterator::Initialize() {
// Run forwards through the bytecode array to determine the offset of each
// bytecode.
while (current_offset() < bytecode_array()->length()) {
offsets_.push_back(current_offset());
SetOffset(current_offset() + current_bytecode_size());
}
GoToStart();
}
bool BytecodeArrayRandomIterator::IsValid() const {
return current_index_ >= 0 &&
static_cast<size_t>(current_index_) < offsets_.size();
}
void BytecodeArrayRandomIterator::UpdateOffsetFromIndex() {
if (IsValid()) {
SetOffset(offsets_[current_index_]);
}
}
} // namespace interpreter
} // namespace internal
} // namespace v8