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/*
* Copyright (C) 2017 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_LIBDEXFILE_DEX_DEX_FILE_EXCEPTION_HELPERS_H_
#define ART_LIBDEXFILE_DEX_DEX_FILE_EXCEPTION_HELPERS_H_
#include <android-base/logging.h>
#include "dex_file_types.h"
namespace art {
namespace dex {
struct TryItem;
} // namespace dex
class CodeItemDataAccessor;
class CatchHandlerIterator {
public:
CatchHandlerIterator(const CodeItemDataAccessor& accessor, uint32_t address);
CatchHandlerIterator(const CodeItemDataAccessor& accessor, const dex::TryItem& try_item);
explicit CatchHandlerIterator(const uint8_t* handler_data) {
Init(handler_data);
}
dex::TypeIndex GetHandlerTypeIndex() const {
return handler_.type_idx_;
}
uint32_t GetHandlerAddress() const {
return handler_.address_;
}
void Next();
bool HasNext() const {
return remaining_count_ != -1 || catch_all_;
}
// End of this set of catch blocks, convenience method to locate next set of catch blocks
const uint8_t* EndDataPointer() const {
CHECK(!HasNext());
return current_data_;
}
private:
void Init(const CodeItemDataAccessor& accessor, int32_t offset);
void Init(const uint8_t* handler_data);
struct CatchHandlerItem {
dex::TypeIndex type_idx_; // type index of the caught exception type
uint32_t address_; // handler address
} handler_;
const uint8_t* current_data_; // the current handler in dex file.
int32_t remaining_count_; // number of handlers not read.
bool catch_all_; // is there a handler that will catch all exceptions in case
// that all typed handler does not match.
};
} // namespace art
#endif // ART_LIBDEXFILE_DEX_DEX_FILE_EXCEPTION_HELPERS_H_
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