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102 lines
2.7 KiB
102 lines
2.7 KiB
/*
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* Copyright (C) 2018 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_CLASS_ITERATOR_H_
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#define ART_LIBDEXFILE_DEX_CLASS_ITERATOR_H_
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#include <android-base/logging.h>
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namespace art {
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class ClassAccessor;
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class ClassIterator;
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class DexFile;
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// Holder class, used to construct ClassAccessors.
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class ClassIteratorData {
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public:
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ClassIteratorData(const DexFile& dex_file, uint32_t class_def_idx)
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: dex_file_(dex_file),
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class_def_idx_(class_def_idx) {}
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private:
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const DexFile& dex_file_;
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uint32_t class_def_idx_ = 0u;
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friend class ClassAccessor;
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friend class ClassIterator;
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};
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// Iterator for visiting classes in a Dex file.
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class ClassIterator : public std::iterator<std::forward_iterator_tag, ClassIteratorData> {
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public:
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using value_type = std::iterator<std::forward_iterator_tag, ClassIteratorData>::value_type;
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using difference_type = std::iterator<std::forward_iterator_tag, value_type>::difference_type;
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ClassIterator(const DexFile& dex_file, uint32_t class_def_idx)
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: data_(dex_file, class_def_idx) {}
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// Value after modification.
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ClassIterator& operator++() {
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++data_.class_def_idx_;
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return *this;
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}
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// Value before modification.
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ClassIterator operator++(int) {
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ClassIterator temp = *this;
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++*this;
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return temp;
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}
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const value_type& operator*() const {
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return data_;
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}
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bool operator==(const ClassIterator& rhs) const {
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DCHECK_EQ(&data_.dex_file_, &rhs.data_.dex_file_) << "Comparing different dex files.";
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return data_.class_def_idx_ == rhs.data_.class_def_idx_;
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}
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bool operator!=(const ClassIterator& rhs) const {
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return !(*this == rhs);
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}
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bool operator<(const ClassIterator& rhs) const {
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DCHECK_EQ(&data_.dex_file_, &rhs.data_.dex_file_) << "Comparing different dex files.";
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return data_.class_def_idx_ < rhs.data_.class_def_idx_;
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}
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bool operator>(const ClassIterator& rhs) const {
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return rhs < *this;
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}
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bool operator<=(const ClassIterator& rhs) const {
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return !(rhs < *this);
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}
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bool operator>=(const ClassIterator& rhs) const {
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return !(*this < rhs);
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}
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protected:
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ClassIteratorData data_;
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};
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} // namespace art
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#endif // ART_LIBDEXFILE_DEX_CLASS_ITERATOR_H_
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