/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_LIBDEXFILE_DEX_DEX_FILE_EXCEPTION_HELPERS_H_
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#define ART_LIBDEXFILE_DEX_DEX_FILE_EXCEPTION_HELPERS_H_
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#include <android-base/logging.h>
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#include "dex_file_types.h"
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namespace art {
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namespace dex {
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struct TryItem;
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} // namespace dex
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class CodeItemDataAccessor;
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class CatchHandlerIterator {
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public:
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CatchHandlerIterator(const CodeItemDataAccessor& accessor, uint32_t address);
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CatchHandlerIterator(const CodeItemDataAccessor& accessor, const dex::TryItem& try_item);
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explicit CatchHandlerIterator(const uint8_t* handler_data) {
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Init(handler_data);
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}
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dex::TypeIndex GetHandlerTypeIndex() const {
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return handler_.type_idx_;
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}
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uint32_t GetHandlerAddress() const {
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return handler_.address_;
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}
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void Next();
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bool HasNext() const {
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return remaining_count_ != -1 || catch_all_;
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}
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// End of this set of catch blocks, convenience method to locate next set of catch blocks
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const uint8_t* EndDataPointer() const {
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CHECK(!HasNext());
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return current_data_;
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}
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private:
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void Init(const CodeItemDataAccessor& accessor, int32_t offset);
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void Init(const uint8_t* handler_data);
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struct CatchHandlerItem {
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dex::TypeIndex type_idx_; // type index of the caught exception type
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uint32_t address_; // handler address
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} handler_;
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const uint8_t* current_data_; // the current handler in dex file.
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int32_t remaining_count_; // number of handlers not read.
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bool catch_all_; // is there a handler that will catch all exceptions in case
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// that all typed handler does not match.
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};
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} // namespace art
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#endif // ART_LIBDEXFILE_DEX_DEX_FILE_EXCEPTION_HELPERS_H_
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