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248 lines
9.4 KiB
248 lines
9.4 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_ACCESSOR_INL_H_
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#define ART_LIBDEXFILE_DEX_CLASS_ACCESSOR_INL_H_
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#include "class_accessor.h"
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#include "base/hiddenapi_flags.h"
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#include "base/leb128.h"
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#include "base/utils.h"
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#include "class_iterator.h"
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#include "code_item_accessors-inl.h"
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#include "dex_file.h"
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#include "method_reference.h"
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namespace art {
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inline ClassAccessor::ClassAccessor(const ClassIteratorData& data)
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: ClassAccessor(data.dex_file_, data.class_def_idx_) {}
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inline ClassAccessor::ClassAccessor(const DexFile& dex_file,
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const dex::ClassDef& class_def,
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bool parse_hiddenapi_class_data)
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: ClassAccessor(dex_file,
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dex_file.GetClassData(class_def),
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dex_file.GetIndexForClassDef(class_def),
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parse_hiddenapi_class_data) {}
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inline ClassAccessor::ClassAccessor(const DexFile& dex_file, uint32_t class_def_index)
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: ClassAccessor(dex_file, dex_file.GetClassDef(class_def_index)) {}
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inline ClassAccessor::ClassAccessor(const DexFile& dex_file,
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const uint8_t* class_data,
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uint32_t class_def_index,
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bool parse_hiddenapi_class_data)
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: dex_file_(dex_file),
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class_def_index_(class_def_index),
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ptr_pos_(class_data),
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hiddenapi_ptr_pos_(nullptr),
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num_static_fields_(ptr_pos_ != nullptr ? DecodeUnsignedLeb128(&ptr_pos_) : 0u),
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num_instance_fields_(ptr_pos_ != nullptr ? DecodeUnsignedLeb128(&ptr_pos_) : 0u),
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num_direct_methods_(ptr_pos_ != nullptr ? DecodeUnsignedLeb128(&ptr_pos_) : 0u),
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num_virtual_methods_(ptr_pos_ != nullptr ? DecodeUnsignedLeb128(&ptr_pos_) : 0u) {
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if (parse_hiddenapi_class_data && class_def_index != DexFile::kDexNoIndex32) {
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const dex::HiddenapiClassData* hiddenapi_class_data = dex_file.GetHiddenapiClassData();
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if (hiddenapi_class_data != nullptr) {
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hiddenapi_ptr_pos_ = hiddenapi_class_data->GetFlagsPointer(class_def_index);
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}
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}
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}
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inline void ClassAccessor::Method::Read() {
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index_ += DecodeUnsignedLeb128(&ptr_pos_);
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access_flags_ = DecodeUnsignedLeb128(&ptr_pos_);
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code_off_ = DecodeUnsignedLeb128(&ptr_pos_);
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if (hiddenapi_ptr_pos_ != nullptr) {
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hiddenapi_flags_ = DecodeUnsignedLeb128(&hiddenapi_ptr_pos_);
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DCHECK(hiddenapi::ApiList(hiddenapi_flags_).IsValid());
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}
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}
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inline MethodReference ClassAccessor::Method::GetReference() const {
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return MethodReference(&dex_file_, GetIndex());
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}
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inline void ClassAccessor::Field::Read() {
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index_ += DecodeUnsignedLeb128(&ptr_pos_);
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access_flags_ = DecodeUnsignedLeb128(&ptr_pos_);
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if (hiddenapi_ptr_pos_ != nullptr) {
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hiddenapi_flags_ = DecodeUnsignedLeb128(&hiddenapi_ptr_pos_);
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DCHECK(hiddenapi::ApiList(hiddenapi_flags_).IsValid());
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}
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}
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template <typename DataType, typename Visitor>
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inline void ClassAccessor::VisitMembers(size_t count,
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const Visitor& visitor,
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DataType* data) const {
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DCHECK(data != nullptr);
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for ( ; count != 0; --count) {
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data->Read();
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visitor(*data);
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}
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}
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template <typename StaticFieldVisitor,
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typename InstanceFieldVisitor,
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typename DirectMethodVisitor,
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typename VirtualMethodVisitor>
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inline void ClassAccessor::VisitFieldsAndMethods(
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const StaticFieldVisitor& static_field_visitor,
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const InstanceFieldVisitor& instance_field_visitor,
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const DirectMethodVisitor& direct_method_visitor,
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const VirtualMethodVisitor& virtual_method_visitor) const {
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Field field(dex_file_, ptr_pos_, hiddenapi_ptr_pos_);
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VisitMembers(num_static_fields_, static_field_visitor, &field);
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field.NextSection();
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VisitMembers(num_instance_fields_, instance_field_visitor, &field);
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Method method(dex_file_, field.ptr_pos_, field.hiddenapi_ptr_pos_, /*is_static_or_direct*/ true);
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VisitMembers(num_direct_methods_, direct_method_visitor, &method);
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method.NextSection();
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VisitMembers(num_virtual_methods_, virtual_method_visitor, &method);
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}
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template <typename DirectMethodVisitor,
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typename VirtualMethodVisitor>
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inline void ClassAccessor::VisitMethods(const DirectMethodVisitor& direct_method_visitor,
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const VirtualMethodVisitor& virtual_method_visitor) const {
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VisitFieldsAndMethods(VoidFunctor(),
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VoidFunctor(),
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direct_method_visitor,
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virtual_method_visitor);
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}
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template <typename StaticFieldVisitor,
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typename InstanceFieldVisitor>
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inline void ClassAccessor::VisitFields(const StaticFieldVisitor& static_field_visitor,
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const InstanceFieldVisitor& instance_field_visitor) const {
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VisitFieldsAndMethods(static_field_visitor,
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instance_field_visitor,
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VoidFunctor(),
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VoidFunctor());
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}
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inline const dex::CodeItem* ClassAccessor::GetCodeItem(const Method& method) const {
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return dex_file_.GetCodeItem(method.GetCodeItemOffset());
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}
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inline CodeItemInstructionAccessor ClassAccessor::Method::GetInstructions() const {
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return CodeItemInstructionAccessor(dex_file_, dex_file_.GetCodeItem(GetCodeItemOffset()));
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}
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inline CodeItemDataAccessor ClassAccessor::Method::GetInstructionsAndData() const {
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return CodeItemDataAccessor(dex_file_, dex_file_.GetCodeItem(GetCodeItemOffset()));
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}
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inline const char* ClassAccessor::GetDescriptor() const {
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return dex_file_.StringByTypeIdx(GetClassIdx());
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}
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inline const dex::CodeItem* ClassAccessor::Method::GetCodeItem() const {
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return dex_file_.GetCodeItem(code_off_);
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}
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inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Field>>
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ClassAccessor::GetFieldsInternal(size_t count) const {
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return {
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DataIterator<Field>(dex_file_,
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0u,
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num_static_fields_,
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count,
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ptr_pos_,
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hiddenapi_ptr_pos_),
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DataIterator<Field>(dex_file_,
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count,
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num_static_fields_,
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count,
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// The following pointers are bogus but unused in the `end` iterator.
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ptr_pos_,
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hiddenapi_ptr_pos_) };
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}
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// Return an iteration range for the first <count> methods.
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inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Method>>
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ClassAccessor::GetMethodsInternal(size_t count) const {
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// Skip over the fields.
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Field field(dex_file_, ptr_pos_, hiddenapi_ptr_pos_);
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VisitMembers(NumFields(), VoidFunctor(), &field);
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// Return the iterator pair.
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return {
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DataIterator<Method>(dex_file_,
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0u,
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num_direct_methods_,
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count,
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field.ptr_pos_,
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field.hiddenapi_ptr_pos_),
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DataIterator<Method>(dex_file_,
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count,
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num_direct_methods_,
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count,
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// The following pointers are bogus but unused in the `end` iterator.
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field.ptr_pos_,
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field.hiddenapi_ptr_pos_) };
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}
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inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Field>> ClassAccessor::GetFields()
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const {
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return GetFieldsInternal(num_static_fields_ + num_instance_fields_);
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}
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inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Field>>
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ClassAccessor::GetStaticFields() const {
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return GetFieldsInternal(num_static_fields_);
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}
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inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Field>>
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ClassAccessor::GetInstanceFields() const {
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IterationRange<ClassAccessor::DataIterator<ClassAccessor::Field>> fields = GetFields();
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// Skip the static fields.
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return { std::next(fields.begin(), NumStaticFields()), fields.end() };
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}
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inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Method>>
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ClassAccessor::GetMethods() const {
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return GetMethodsInternal(NumMethods());
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}
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inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Method>>
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ClassAccessor::GetDirectMethods() const {
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return GetMethodsInternal(NumDirectMethods());
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}
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inline IterationRange<ClassAccessor::DataIterator<ClassAccessor::Method>>
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ClassAccessor::GetVirtualMethods() const {
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IterationRange<DataIterator<Method>> methods = GetMethods();
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// Skip the direct fields.
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return { std::next(methods.begin(), NumDirectMethods()), methods.end() };
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}
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inline dex::TypeIndex ClassAccessor::GetClassIdx() const {
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return dex_file_.GetClassDef(class_def_index_).class_idx_;
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}
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inline const dex::ClassDef& ClassAccessor::GetClassDef() const {
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return dex_file_.GetClassDef(GetClassDefIndex());
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}
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} // namespace art
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#endif // ART_LIBDEXFILE_DEX_CLASS_ACCESSOR_INL_H_
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