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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_RUNTIME_DEX_INSTRUCTION_VISITOR_H_
#define ART_RUNTIME_DEX_INSTRUCTION_VISITOR_H_
#include "base/macros.h"
#include "dex_instruction.h"
namespace art {
template<typename T>
class DexInstructionVisitor {
public:
void Visit(const uint16_t* code, size_t size_in_bytes) {
T* derived = static_cast<T*>(this);
size_t size_in_code_units = size_in_bytes / sizeof(uint16_t);
size_t i = 0;
while (i < size_in_code_units) {
const Instruction* inst = Instruction::At(&code[i]);
switch (inst->Opcode()) {
#define INSTRUCTION_CASE(o, cname, p, f, r, i, a, v) \
case Instruction::cname: { \
derived->Do_ ## cname(inst); \
break; \
}
#include "dex_instruction_list.h"
DEX_INSTRUCTION_LIST(INSTRUCTION_CASE)
#undef DEX_INSTRUCTION_LIST
#undef INSTRUCTION_CASE
default:
CHECK(false);
}
i += inst->SizeInCodeUnits();
}
}
private:
// Specific handlers for each instruction.
#define INSTRUCTION_VISITOR(o, cname, p, f, r, i, a, v) \
void Do_ ## cname(const Instruction* inst) { \
T* derived = static_cast<T*>(this); \
derived->Do_Default(inst); \
}
#include "dex_instruction_list.h"
DEX_INSTRUCTION_LIST(INSTRUCTION_VISITOR)
#undef DEX_INSTRUCTION_LIST
#undef INSTRUCTION_VISITOR
// The default instruction handler.
void Do_Default(const Instruction*) {
return;
}
};
} // namespace art
#endif // ART_RUNTIME_DEX_INSTRUCTION_VISITOR_H_
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