Line data    Source code

       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             : #include "src/interpreter/bytecode-array-random-iterator.h"
       6             : #include "src/objects-inl.h"
       7             : 
       8             : namespace v8 {
       9             : namespace internal {
      10             : namespace interpreter {
      11             : 
      12      429772 : BytecodeArrayRandomIterator::BytecodeArrayRandomIterator(
      13             :     Handle<BytecodeArray> bytecode_array, Zone* zone)
      14    29537886 :     : BytecodeArrayAccessor(bytecode_array, 0), offsets_(zone) {
      15             :   // Run forwards through the bytecode array to determine the offset of each
      16             :   // bytecode.
      17    14768944 :   while (current_offset() < bytecode_array->length()) {
      18    28678341 :     offsets_.push_back(current_offset());
      19    14339170 :     SetOffset(current_offset() + current_bytecode_size());
      20             :   }
      21             :   GoToStart();
      22      429773 : }
      23             : 
      24    14768807 : bool BytecodeArrayRandomIterator::IsValid() const {
      25    63829970 :   return current_index_ >= 0 &&
      26    46254027 :          static_cast<size_t>(current_index_) < offsets_.size();
      27             : }
      28             : 
      29    17575943 : void BytecodeArrayRandomIterator::UpdateOffsetFromIndex() {
      30    17575943 :   if (IsValid()) {
      31    34292356 :     SetOffset(offsets_[current_index_]);
      32             :   }
      33    17575940 : }
      34             : 
      35             : }  // namespace interpreter
      36             : }  // namespace internal
      37             : }  // namespace v8