| // 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. |
| |
| #ifndef V8_INTERPRETER_BYTECODE_ARRAY_ITERATOR_H_ |
| #define V8_INTERPRETER_BYTECODE_ARRAY_ITERATOR_H_ |
| |
| #include "src/handles.h" |
| #include "src/interpreter/bytecodes.h" |
| #include "src/objects.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace interpreter { |
| |
| class BytecodeArrayIterator { |
| public: |
| explicit BytecodeArrayIterator(Handle<BytecodeArray> bytecode_array); |
| |
| void Advance(); |
| bool done() const; |
| Bytecode current_bytecode() const; |
| int current_bytecode_size() const; |
| void set_current_offset(int offset) { bytecode_offset_ = offset; } |
| int current_offset() const { return bytecode_offset_; } |
| const Handle<BytecodeArray>& bytecode_array() const { |
| return bytecode_array_; |
| } |
| |
| int8_t GetImmediateOperand(int operand_index) const; |
| int GetIndexOperand(int operand_index) const; |
| int GetRegisterCountOperand(int operand_index) const; |
| Register GetRegisterOperand(int operand_index) const; |
| int GetRegisterOperandRange(int operand_index) const; |
| Handle<Object> GetConstantForIndexOperand(int operand_index) const; |
| |
| // Get the raw byte for the given operand. Note: you should prefer using the |
| // typed versions above which cast the return to an appropriate type. |
| uint32_t GetRawOperand(int operand_index, OperandType operand_type) const; |
| |
| // Returns the absolute offset of the branch target at the current |
| // bytecode. It is an error to call this method if the bytecode is |
| // not for a jump or conditional jump. |
| int GetJumpTargetOffset() const; |
| |
| private: |
| Handle<BytecodeArray> bytecode_array_; |
| int bytecode_offset_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BytecodeArrayIterator); |
| }; |
| |
| } // namespace interpreter |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_INTERPRETER_BYTECODE_GRAPH_ITERATOR_H_ |