values-inter.hpp
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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, 2008 00008 * 00009 * Last modified: 00010 * $Date: 2010-07-28 17:35:33 +0200 (Wed, 28 Jul 2010) $ by $Author: schulte $ 00011 * $Revision: 11294 $ 00012 * 00013 * This file is part of Gecode, the generic constraint 00014 * development environment: 00015 * http://www.gecode.org 00016 * 00017 * Permission is hereby granted, free of charge, to any person obtaining 00018 * a copy of this software and associated documentation files (the 00019 * "Software"), to deal in the Software without restriction, including 00020 * without limitation the rights to use, copy, modify, merge, publish, 00021 * distribute, sublicense, and/or sell copies of the Software, and to 00022 * permit persons to whom the Software is furnished to do so, subject to 00023 * the following conditions: 00024 * 00025 * The above copyright notice and this permission notice shall be 00026 * included in all copies or substantial portions of the Software. 00027 * 00028 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00029 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00030 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00031 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00032 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00033 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00034 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00035 * 00036 */ 00037 00038 namespace Gecode { namespace Iter { namespace Values { 00039 00046 template<class I, class J> 00047 class Inter { 00048 protected: 00050 I i; 00052 J j; 00054 void next(void); 00055 public: 00057 00058 00059 Inter(void); 00061 Inter(I& i, J& j); 00063 void init(I& i, J& j); 00065 00067 00068 00069 bool operator ()(void) const; 00071 void operator ++(void); 00073 00075 00076 00077 int val(void) const; 00079 }; 00080 00081 00082 template<class I, class J> 00083 forceinline 00084 Inter<I,J>::Inter(void) {} 00085 00086 template<class I, class J> 00087 forceinline void 00088 Inter<I,J>::next(void) { 00089 do { 00090 while (i() && j() && (i.val() < j.val())) 00091 ++i; 00092 while (i() && j() && (j.val() < i.val())) 00093 ++j; 00094 } while (i() && j() && (i.val() != j.val())); 00095 } 00096 00097 template<class I, class J> 00098 inline void 00099 Inter<I,J>::init(I& i0, J& j0) { 00100 i=i0; j=j0; next(); 00101 } 00102 00103 template<class I, class J> 00104 forceinline 00105 Inter<I,J>::Inter(I& i0, J& j0) : i(i0), j(j0) { 00106 next(); 00107 } 00108 00109 template<class I, class J> 00110 forceinline void 00111 Inter<I,J>::operator ++(void) { 00112 ++i; ++j; next(); 00113 } 00114 00115 template<class I, class J> 00116 forceinline bool 00117 Inter<I,J>::operator ()(void) const { 00118 return i() && j(); 00119 } 00120 00121 template<class I, class J> 00122 forceinline int 00123 Inter<I,J>::val(void) const { 00124 assert(i.val() == j.val()); 00125 return i.val(); 00126 } 00127 00128 }}} 00129 00130 // STATISTICS: iter-any