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: 2009-09-08 21:10:29 +0200 (Tue, 08 Sep 2009) $ by $Author: schulte $ 00011 * $Revision: 9692 $ 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 private: 00050 I i; 00052 J j; 00054 void next(void); 00055 private: 00056 IsValueIter<I> constraintI; IsValueIter<J> constraintJ; 00057 public: 00059 00060 00061 Inter(void); 00063 Inter(I& i, J& j); 00065 void init(I& i, J& j); 00067 00069 00070 00071 bool operator ()(void) const; 00073 void operator ++(void); 00075 00077 00078 00079 int val(void) const; 00081 }; 00082 00083 00084 template<class I, class J> 00085 forceinline 00086 Inter<I,J>::Inter(void) {} 00087 00088 template<class I, class J> 00089 forceinline void 00090 Inter<I,J>::next(void) { 00091 do { 00092 while (i() && j() && (i.val() < j.val())) 00093 ++i; 00094 while (i() && j() && (j.val() < i.val())) 00095 ++j; 00096 } while (i() && j() && (i.val() != j.val())); 00097 } 00098 00099 template<class I, class J> 00100 inline void 00101 Inter<I,J>::init(I& i0, J& j0) { 00102 i=i0; j=j0; next(); 00103 } 00104 00105 template<class I, class J> 00106 forceinline 00107 Inter<I,J>::Inter(I& i0, J& j0) : i(i0), j(j0) { 00108 next(); 00109 } 00110 00111 template<class I, class J> 00112 forceinline void 00113 Inter<I,J>::operator ++(void) { 00114 ++i; ++j; next(); 00115 } 00116 00117 template<class I, class J> 00118 forceinline bool 00119 Inter<I,J>::operator ()(void) const { 00120 return i() && j(); 00121 } 00122 00123 template<class I, class J> 00124 forceinline int 00125 Inter<I,J>::val(void) const { 00126 assert(i.val() == j.val()); 00127 return i.val(); 00128 } 00129 00130 }}} 00131 00132 // STATISTICS: iter-any