mirror of
https://github.com/KingDuckZ/dindexer.git
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68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
/* Copyright 2015, 2016, Michele Santullo
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* This file is part of "dindexer".
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*
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* "dindexer" 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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* "dindexer" 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 "dindexer". If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef idCB253C1A5AFA46A18B8878ED4072CD96
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#define idCB253C1A5AFA46A18B8878ED4072CD96
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#include <ciso646>
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namespace mchlib {
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namespace scantask {
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template <typename T>
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class Base {
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protected:
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Base ( void );
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virtual ~Base ( void ) noexcept = default;
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public:
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T& get_or_create ( void );
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void clear_data ( void );
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private:
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virtual void on_data_destroy ( T& parData ) = 0;
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virtual void on_data_create ( T& parData ) = 0;
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T m_data;
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bool m_data_created;
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};
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template <typename T>
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Base<T>::Base() :
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m_data_created(false)
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{
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}
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template <typename T>
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T& Base<T>::get_or_create() {
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if (not m_data_created) {
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m_data_created = true;
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this->on_data_create(m_data);
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}
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return m_data;
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}
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template <typename T>
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void Base<T>::clear_data() {
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if (m_data_created) {
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m_data_created = false;
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this->on_data_destroy(m_data);
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}
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}
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} //namespace scantask
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} //namespace mchlib
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#endif
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