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/*
SPDX-FileCopyrightText: 2016 Volker Krause <vkrause@kde.org>
SPDX-License-Identifier: MIT
*/
#ifndef KSYNTAXHIGHLIGHTING_DEFINITIONREF_P_H
#define KSYNTAXHIGHLIGHTING_DEFINITIONREF_P_H
#include "definition.h"
#include <memory>
namespace KSyntaxHighlighting
{
class Definition;
class DefinitionData;
/** Weak reference for Definition instances.
*
* This must be used when holding Definition instances
* in objects hold directly or indirectly by Definition
* to avoid reference count loops and thus memory leaks.
*
* This class follows the rule of zero. It is implicitly movable and copyable.
*
* @internal
*/
class DefinitionRef
{
public:
DefinitionRef();
explicit DefinitionRef(const Definition &def) noexcept;
DefinitionRef &operator=(const Definition &def) noexcept;
Definition definition() const;
/**
* Checks two definition references for equality.
*/
bool operator==(const DefinitionRef &other) const;
/**
* Checks two definition references for inequality.
*/
bool operator!=(const DefinitionRef &other) const
{
return !(*this == other);
}
/**
* Checks two definition for equality.
*/
bool operator==(const Definition &other) const;
/**
* Checks two definition for inequality.
*/
bool operator!=(const Definition &other) const
{
return !(*this == other);
}
private:
friend class DefinitionData;
std::weak_ptr<DefinitionData> d;
};
}
#endif
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