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 BytecodeArrayRandomIterator(Handle<BytecodeArray> bytecode_array,Zone * zone)12BytecodeArrayRandomIterator::BytecodeArrayRandomIterator( 13 Handle<BytecodeArray> bytecode_array, Zone* zone) 14 : BytecodeArrayAccessor(bytecode_array, 0), offsets_(zone) { 15 // Run forwards through the bytecode array to determine the offset of each 16 // bytecode. 17 while (current_offset() < bytecode_array->length()) { 18 offsets_.push_back(current_offset()); 19 SetOffset(current_offset() + current_bytecode_size()); 20 } 21 GoToStart(); 22 } 23 IsValid() const24bool BytecodeArrayRandomIterator::IsValid() const { 25 return current_index_ >= 0 && 26 static_cast<size_t>(current_index_) < offsets_.size(); 27 } 28 UpdateOffsetFromIndex()29void BytecodeArrayRandomIterator::UpdateOffsetFromIndex() { 30 if (IsValid()) { 31 SetOffset(offsets_[current_index_]); 32 } 33 } 34 35 } // namespace interpreter 36 } // namespace internal 37 } // namespace v8 38