mirror of
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55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
/**
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* Looking Glass
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* Copyright © 2017-2026 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma once
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#include <type_traits>
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namespace Seq
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{
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template<typename T>
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T Next(T value)
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{
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static_assert(std::is_integral<T>::value &&
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std::is_unsigned<T>::value && !std::is_same<T, bool>::value,
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"sequence type must be an unsigned integer");
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const T next = value + static_cast<T>(1);
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return next ? next : static_cast<T>(1);
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}
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template<typename T>
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T Inc(T& value)
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{
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value = Next(value);
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return value;
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}
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template<typename T>
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T Take(T& value)
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{
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if (!value)
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value = static_cast<T>(1);
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const T result = value;
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value = Next(value);
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return result;
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}
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}
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