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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- *//* * Main authors: * Guido Tack <tack@gecode.org> * * Copyright: * Guido Tack, 2007 * * This file is part of Gecode, the generic constraint * development environment: * http://www.gecode.org * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */
#ifndef FLATZINC_OPTION_HH#define FLATZINC_OPTION_HH
namespace Gecode { namespace FlatZinc {
/// Optional value template<class Val> struct Option { private: bool _some; Val _v; public: bool operator()(void) const { return _some; } const Val& some(void) const { return _v; } Val& some(void) { return _v; } static Option<Val> none(void) { Option<Val> o; o._some = false; new (&o._v) Val(); return o; } static Option<Val> some(const Val& v) { Option<Val> o; o._some = true; o._v = v; return o; } };
}}
#endif
// STATISTICS: flatzinc-any