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      1 // Copyright 2016 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 #ifndef TEST_CCTEST_INTERPRETER_SOURCE_POSITION_COMPARER_H_
      6 #define TEST_CCTEST_INTERPRETER_SOURCE_POSITION_COMPARER_H_
      7 
      8 #include "src/interpreter/bytecode-array-iterator.h"
      9 #include "src/interpreter/source-position-table.h"
     10 #include "src/objects.h"
     11 #include "src/v8.h"
     12 
     13 namespace v8 {
     14 namespace internal {
     15 namespace interpreter {
     16 
     17 class SourcePositionMatcher final {
     18  public:
     19   bool Match(Handle<BytecodeArray> original, Handle<BytecodeArray> optimized);
     20 
     21  private:
     22   bool HasNewExpressionPositionsInOptimized(
     23       const std::vector<PositionTableEntry>* const original_positions,
     24       const std::vector<PositionTableEntry>* const optimized_positions);
     25 
     26   bool CompareExpressionPositions(
     27       const std::vector<PositionTableEntry>* const original_positions,
     28       const std::vector<PositionTableEntry>* const optimized_positions);
     29 
     30   void StripUnneededExpressionPositions(
     31       Handle<BytecodeArray> bytecode_array,
     32       std::vector<PositionTableEntry>* positions,
     33       int next_statement_bytecode_offset);
     34 
     35   bool ExpressionPositionIsNeeded(Handle<BytecodeArray> bytecode_array,
     36                                   int start_offset, int end_offset);
     37 
     38   void MoveToNextStatement(
     39       SourcePositionTableIterator* iterator,
     40       std::vector<PositionTableEntry>* expression_positions);
     41 
     42   void AdvanceBytecodeIterator(BytecodeArrayIterator* iterator,
     43                                int bytecode_offset);
     44 };
     45 
     46 }  // namespace interpreter
     47 }  // namespace internal
     48 }  // namespace v8
     49 
     50 #endif  // TEST_CCTEST_INTERPRETER_SOURCE_POSITION_COMPARER_H_
     51