143 lines
3.8 KiB
C++
143 lines
3.8 KiB
C++
/*
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* Copyright (C) 2011 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_RUNTIME_DEX_METHOD_ITERATOR_H_
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#define ART_RUNTIME_DEX_METHOD_ITERATOR_H_
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#include <vector>
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#include "dex_file.h"
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namespace art {
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class DexMethodIterator {
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public:
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explicit DexMethodIterator(const std::vector<const DexFile*>& dex_files)
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: dex_files_(dex_files),
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found_next_(false),
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dex_file_index_(0),
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class_def_index_(0),
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class_def_(nullptr),
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class_data_(nullptr),
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direct_method_(false) {
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CHECK_NE(0U, dex_files_.size());
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}
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bool HasNext() {
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if (found_next_) {
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return true;
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}
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while (true) {
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// End of DexFiles, we are done.
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if (dex_file_index_ == dex_files_.size()) {
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return false;
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}
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if (class_def_index_ == GetDexFileInternal().NumClassDefs()) {
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// End of this DexFile, advance and retry.
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class_def_index_ = 0;
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dex_file_index_++;
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continue;
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}
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if (class_def_ == nullptr) {
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class_def_ = &GetDexFileInternal().GetClassDef(class_def_index_);
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}
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if (class_data_ == nullptr) {
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class_data_ = GetDexFileInternal().GetClassData(*class_def_);
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if (class_data_ == nullptr) {
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// empty class, such as a marker interface
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// End of this class, advance and retry.
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class_def_ = nullptr;
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class_def_index_++;
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continue;
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}
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}
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if (it_.get() == nullptr) {
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it_.reset(new ClassDataItemIterator(GetDexFileInternal(), class_data_));
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GetIterator().SkipAllFields();
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direct_method_ = true;
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}
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if (direct_method_ && GetIterator().HasNextDirectMethod()) {
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// Found method
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found_next_ = true;
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return true;
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}
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direct_method_ = false;
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if (GetIterator().HasNextVirtualMethod()) {
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// Found method
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found_next_ = true;
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return true;
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}
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// End of this class, advance and retry.
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DCHECK(!GetIterator().HasNext());
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it_.reset(nullptr);
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class_data_ = nullptr;
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class_def_ = nullptr;
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class_def_index_++;
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}
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}
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void Next() {
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found_next_ = false;
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if (it_.get() != nullptr) {
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// Advance to next method if we currently are looking at a class.
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GetIterator().Next();
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}
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}
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const DexFile& GetDexFile() {
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CHECK(HasNext());
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return GetDexFileInternal();
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}
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uint32_t GetMemberIndex() {
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CHECK(HasNext());
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return GetIterator().GetMemberIndex();
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}
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InvokeType GetInvokeType() {
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CHECK(HasNext());
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CHECK(class_def_ != nullptr);
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return GetIterator().GetMethodInvokeType(*class_def_);
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}
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private:
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ClassDataItemIterator& GetIterator() const {
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CHECK(it_.get() != nullptr);
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return *it_.get();
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}
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const DexFile& GetDexFileInternal() const {
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CHECK_LT(dex_file_index_, dex_files_.size());
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const DexFile* dex_file = dex_files_[dex_file_index_];
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CHECK(dex_file != nullptr);
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return *dex_file;
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}
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const std::vector<const DexFile*>& dex_files_;
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bool found_next_;
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uint32_t dex_file_index_;
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uint32_t class_def_index_;
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const DexFile::ClassDef* class_def_;
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const uint8_t* class_data_;
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std::unique_ptr<ClassDataItemIterator> it_;
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bool direct_method_;
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};
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} // namespace art
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#endif // ART_RUNTIME_DEX_METHOD_ITERATOR_H_
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