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src
common
singleton.h
Go to the documentation of this file.
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// * This file is part of the COLOBOT source code
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// * Copyright (C) 2012, Polish Portal of Colobot (PPC)
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// *
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// * This program is free software: you can redistribute it and/or modify
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// * it under the terms of the GNU General Public License as published by
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// * the Free Software Foundation, either version 3 of the License, or
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// * (at your option) any later version.
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// *
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// * This program is distributed in the hope that it will be useful,
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// * but WITHOUT ANY WARRANTY; without even the implied warranty of
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// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// * GNU General Public License for more details.
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// *
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// * You should have received a copy of the GNU General Public License
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// * along with this program. If not, see http://www.gnu.org/licenses/.
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#pragma once
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#include <cassert>
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template
<
typename
T>
class
CSingleton
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{
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protected
:
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static
T* m_instance;
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public
:
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static
T& GetInstance()
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{
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assert(m_instance !=
nullptr
);
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return
*m_instance;
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}
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static
T* GetInstancePointer()
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{
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assert(m_instance !=
nullptr
);
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return
m_instance;
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}
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static
bool
IsCreated()
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{
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return
m_instance !=
nullptr
;
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}
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CSingleton
()
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{
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assert(m_instance ==
nullptr
);
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m_instance =
static_cast<
T *
>
(
this
);
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}
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virtual
~
CSingleton
()
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{
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m_instance =
nullptr
;
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}
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#ifdef TESTS
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static
void
ReplaceInstance(T* newInstance)
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{
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assert(newInstance !=
nullptr
);
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if
(m_instance !=
nullptr
)
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delete
m_instance;
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m_instance = newInstance;
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}
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#endif
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private
:
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CSingleton
& operator=(
const
CSingleton<T>
&);
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CSingleton
(
const
CSingleton<T>
&);
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};
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