• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 #include "src/objects/code-inl.h"
8 
9 namespace v8 {
10 namespace internal {
11 namespace interpreter {
12 
BytecodeArrayRandomIterator(Handle<BytecodeArray> bytecode_array,Zone * zone)13 BytecodeArrayRandomIterator::BytecodeArrayRandomIterator(
14     Handle<BytecodeArray> bytecode_array, Zone* zone)
15     : BytecodeArrayAccessor(bytecode_array, 0), offsets_(zone) {
16   // Run forwards through the bytecode array to determine the offset of each
17   // bytecode.
18   while (current_offset() < bytecode_array->length()) {
19     offsets_.push_back(current_offset());
20     SetOffset(current_offset() + current_bytecode_size());
21   }
22   GoToStart();
23 }
24 
IsValid() const25 bool BytecodeArrayRandomIterator::IsValid() const {
26   return current_index_ >= 0 &&
27          static_cast<size_t>(current_index_) < offsets_.size();
28 }
29 
UpdateOffsetFromIndex()30 void BytecodeArrayRandomIterator::UpdateOffsetFromIndex() {
31   if (IsValid()) {
32     SetOffset(offsets_[current_index_]);
33   }
34 }
35 
36 }  // namespace interpreter
37 }  // namespace internal
38 }  // namespace v8
39