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83 lines
3.2 KiB
83 lines
3.2 KiB
4 months ago
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/*
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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_LIBDEXFILE_DEX_SIGNATURE_INL_H_
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#define ART_LIBDEXFILE_DEX_SIGNATURE_INL_H_
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#include "signature.h"
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#include "dex_file-inl.h"
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namespace art {
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inline bool Signature::operator==(const Signature& rhs) const {
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if (dex_file_ == nullptr) {
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return rhs.dex_file_ == nullptr;
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}
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if (rhs.dex_file_ == nullptr) {
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return false;
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}
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if (dex_file_ == rhs.dex_file_) {
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return proto_id_ == rhs.proto_id_;
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}
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uint32_t lhs_shorty_len; // For a shorty utf16 length == mutf8 length.
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const char* lhs_shorty_data = dex_file_->StringDataAndUtf16LengthByIdx(proto_id_->shorty_idx_,
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&lhs_shorty_len);
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std::string_view lhs_shorty(lhs_shorty_data, lhs_shorty_len);
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{
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uint32_t rhs_shorty_len;
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const char* rhs_shorty_data =
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rhs.dex_file_->StringDataAndUtf16LengthByIdx(rhs.proto_id_->shorty_idx_,
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&rhs_shorty_len);
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std::string_view rhs_shorty(rhs_shorty_data, rhs_shorty_len);
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if (lhs_shorty != rhs_shorty) {
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return false; // Shorty mismatch.
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}
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}
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if (lhs_shorty[0] == 'L') {
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const dex::TypeId& return_type_id = dex_file_->GetTypeId(proto_id_->return_type_idx_);
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const dex::TypeId& rhs_return_type_id =
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rhs.dex_file_->GetTypeId(rhs.proto_id_->return_type_idx_);
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if (!DexFile::StringEquals(dex_file_, return_type_id.descriptor_idx_,
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rhs.dex_file_, rhs_return_type_id.descriptor_idx_)) {
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return false; // Return type mismatch.
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}
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}
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if (lhs_shorty.find('L', 1) != std::string_view::npos) {
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const dex::TypeList* params = dex_file_->GetProtoParameters(*proto_id_);
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const dex::TypeList* rhs_params = rhs.dex_file_->GetProtoParameters(*rhs.proto_id_);
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// We found a reference parameter in the matching shorty, so both lists must be non-empty.
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DCHECK(params != nullptr);
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DCHECK(rhs_params != nullptr);
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uint32_t params_size = params->Size();
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DCHECK_EQ(params_size, rhs_params->Size()); // Parameter list size must match.
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for (uint32_t i = 0; i < params_size; ++i) {
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const dex::TypeId& param_id = dex_file_->GetTypeId(params->GetTypeItem(i).type_idx_);
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const dex::TypeId& rhs_param_id =
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rhs.dex_file_->GetTypeId(rhs_params->GetTypeItem(i).type_idx_);
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if (!DexFile::StringEquals(dex_file_, param_id.descriptor_idx_,
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rhs.dex_file_, rhs_param_id.descriptor_idx_)) {
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return false; // Parameter type mismatch.
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}
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}
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}
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return true;
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}
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} // namespace art
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#endif // ART_LIBDEXFILE_DEX_SIGNATURE_INL_H_
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