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/* -*- C++ -*-
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2024 Cppcheck team.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//---------------------------------------------------------------------------
#ifndef valueptrH
#define valueptrH
//---------------------------------------------------------------------------
#include "config.h"
#include <memory>
template<class T>
class CPPCHECKLIB ValuePtr {
template<class U>
struct cloner {
static T* apply(const T* x) {
return new U(*static_cast<const U*>(x));
}
};
public:
using pointer = T*;
using element_type = T;
using cloner_type = decltype(&cloner<T>::apply);
ValuePtr() : mPtr(nullptr), mClone() {}
template<class U>
// cppcheck-suppress noExplicitConstructor
// NOLINTNEXTLINE(google-explicit-constructor)
ValuePtr(const U& value) : mPtr(cloner<U>::apply(&value)), mClone(&cloner<U>::apply)
{}
ValuePtr(const ValuePtr& rhs) : mPtr(nullptr), mClone(rhs.mClone) {
if (rhs) {
mPtr.reset(mClone(rhs.get()));
}
}
ValuePtr(ValuePtr&& rhs) NOEXCEPT : mPtr(std::move(rhs.mPtr)), mClone(std::move(rhs.mClone)) {}
T* get() NOEXCEPT {
return mPtr.get();
}
const T* get() const NOEXCEPT {
return mPtr.get();
}
T& operator*() {
return *get();
}
const T& operator*() const {
return *get();
}
T* operator->() NOEXCEPT {
return get();
}
const T* operator->() const NOEXCEPT {
return get();
}
void swap(ValuePtr& rhs) NOEXCEPT {
using std::swap;
swap(mPtr, rhs.mPtr);
swap(mClone, rhs.mClone);
}
ValuePtr<T>& operator=(ValuePtr rhs) & {
swap(rhs);
return *this;
}
// NOLINTNEXTLINE(google-explicit-constructor)
operator bool() const NOEXCEPT {
return !!mPtr;
}
private:
std::shared_ptr<T> mPtr;
cloner_type mClone;
};
#endif
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