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/*
* 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.
*/
#ifndef ART_LIBDEXFILE_DEX_SIGNATURE_H_
#define ART_LIBDEXFILE_DEX_SIGNATURE_H_
#include <iosfwd>
#include <string>
#include <string_view>
#include <android-base/logging.h>
#include "base/value_object.h"
namespace art {
namespace dex {
struct ProtoId;
} // namespace dex
class DexFile;
// Abstract the signature of a method.
class Signature : public ValueObject {
public:
std::string ToString() const;
static Signature NoSignature() {
return Signature();
}
bool IsVoid() const;
uint32_t GetNumberOfParameters() const;
bool operator==(const Signature& rhs) const;
bool operator!=(const Signature& rhs) const {
return !(*this == rhs);
}
bool operator==(std::string_view rhs) const;
// Three-way compare.
// Return a value >0 if `rhs` is higher than `*this`, <0 if lower and 0 if equal.
//
// The order is the same as the `ProtoId` order required by dex file specification if both
// signatures were in the same dex file.
int Compare(const Signature& rhs) const;
private:
Signature(const DexFile* dex, const dex::ProtoId& proto) : dex_file_(dex), proto_id_(&proto) {
}
Signature() = default;
friend class DexFile;
const DexFile* dex_file_ = nullptr;
const dex::ProtoId* proto_id_ = nullptr;
};
std::ostream& operator<<(std::ostream& os, const Signature& sig);
} // namespace art
#endif // ART_LIBDEXFILE_DEX_SIGNATURE_H_
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