91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
/*
|
|
* Copyright (C) 2011 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "signature-inl.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include <ostream>
|
|
#include <type_traits>
|
|
|
|
#include "base/string_view_cpp20.h"
|
|
|
|
namespace art {
|
|
|
|
using dex::TypeList;
|
|
|
|
std::string Signature::ToString() const {
|
|
if (dex_file_ == nullptr) {
|
|
CHECK(proto_id_ == nullptr);
|
|
return "<no signature>";
|
|
}
|
|
const TypeList* params = dex_file_->GetProtoParameters(*proto_id_);
|
|
std::string result;
|
|
if (params == nullptr) {
|
|
result += "()";
|
|
} else {
|
|
result += "(";
|
|
for (uint32_t i = 0; i < params->Size(); ++i) {
|
|
result += dex_file_->StringByTypeIdx(params->GetTypeItem(i).type_idx_);
|
|
}
|
|
result += ")";
|
|
}
|
|
result += dex_file_->StringByTypeIdx(proto_id_->return_type_idx_);
|
|
return result;
|
|
}
|
|
|
|
uint32_t Signature::GetNumberOfParameters() const {
|
|
const TypeList* params = dex_file_->GetProtoParameters(*proto_id_);
|
|
return (params != nullptr) ? params->Size() : 0;
|
|
}
|
|
|
|
bool Signature::IsVoid() const {
|
|
const char* return_type = dex_file_->GetReturnTypeDescriptor(*proto_id_);
|
|
return strcmp(return_type, "V") == 0;
|
|
}
|
|
|
|
bool Signature::operator==(std::string_view rhs) const {
|
|
if (dex_file_ == nullptr) {
|
|
return false;
|
|
}
|
|
std::string_view tail(rhs);
|
|
if (!StartsWith(tail, "(")) {
|
|
return false; // Invalid signature
|
|
}
|
|
tail.remove_prefix(1); // "(";
|
|
const TypeList* params = dex_file_->GetProtoParameters(*proto_id_);
|
|
if (params != nullptr) {
|
|
for (uint32_t i = 0; i < params->Size(); ++i) {
|
|
std::string_view param(dex_file_->StringByTypeIdx(params->GetTypeItem(i).type_idx_));
|
|
if (!StartsWith(tail, param)) {
|
|
return false;
|
|
}
|
|
tail.remove_prefix(param.length());
|
|
}
|
|
}
|
|
if (!StartsWith(tail, ")")) {
|
|
return false;
|
|
}
|
|
tail.remove_prefix(1); // ")";
|
|
return tail == dex_file_->StringByTypeIdx(proto_id_->return_type_idx_);
|
|
}
|
|
|
|
std::ostream& operator<<(std::ostream& os, const Signature& sig) {
|
|
return os << sig.ToString();
|
|
}
|
|
|
|
} // namespace art
|