values-singleton.hpp
Go to the documentation of this file.00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Christian Schulte <schulte@gecode.org> 00005 * 00006 * Copyright: 00007 * Christian Schulte, 2007 00008 * 00009 * This file is part of Gecode, the generic constraint 00010 * development environment: 00011 * http://www.gecode.org 00012 * 00013 * Permission is hereby granted, free of charge, to any person obtaining 00014 * a copy of this software and associated documentation files (the 00015 * "Software"), to deal in the Software without restriction, including 00016 * without limitation the rights to use, copy, modify, merge, publish, 00017 * distribute, sublicense, and/or sell copies of the Software, and to 00018 * permit persons to whom the Software is furnished to do so, subject to 00019 * the following conditions: 00020 * 00021 * The above copyright notice and this permission notice shall be 00022 * included in all copies or substantial portions of the Software. 00023 * 00024 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00025 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00026 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00027 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00028 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00029 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00030 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00031 * 00032 */ 00033 00034 namespace Gecode { namespace Iter { namespace Values { 00035 00042 class Singleton { 00043 protected: 00045 bool done; 00047 int v; 00048 public: 00050 00051 00052 Singleton(void); 00054 Singleton(int v); 00056 void init(int v); 00058 00060 00061 00062 bool operator ()(void) const; 00064 void operator ++(void); 00066 00068 00069 00070 int val(void) const; 00072 }; 00073 00074 00075 forceinline 00076 Singleton::Singleton(void) {} 00077 00078 forceinline 00079 Singleton::Singleton(int v0) 00080 : done(false), v(v0) {} 00081 00082 forceinline void 00083 Singleton::init(int v0) { 00084 done=false; v=v0; 00085 } 00086 00087 forceinline void 00088 Singleton::operator ++(void) { 00089 done=true; 00090 } 00091 forceinline bool 00092 Singleton::operator ()(void) const { 00093 return !done; 00094 } 00095 00096 forceinline int 00097 Singleton::val(void) const { 00098 return v; 00099 } 00100 00101 00102 }}} 00103 00104 // STATISTICS: iter-any 00105