ranges-values.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, 2004 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 Ranges { 00035 00041 template<class I> 00042 class ToValues { 00043 protected: 00045 I i; 00047 int cur; 00049 int max; 00051 void start(void); 00052 public: 00054 00055 00056 ToValues(void); 00058 ToValues(I& i); 00060 void init(I& i); 00062 00064 00065 00066 bool operator ()(void) const; 00068 void operator ++(void); 00070 00072 00073 00074 int val(void) const; 00076 }; 00077 00078 00079 00080 template<class I> 00081 forceinline 00082 ToValues<I>::ToValues(void) {} 00083 00084 template<class I> 00085 forceinline void 00086 ToValues<I>::start(void) { 00087 if (i()) { 00088 cur = i.min(); max = i.max(); 00089 } else { 00090 cur = 1; max = 0; 00091 } 00092 } 00093 00094 template<class I> 00095 forceinline 00096 ToValues<I>::ToValues(I& i0) 00097 : i(i0) { 00098 start(); 00099 } 00100 00101 template<class I> 00102 forceinline void 00103 ToValues<I>::init(I& i0) { 00104 i = i0; 00105 start(); 00106 } 00107 00108 00109 template<class I> 00110 forceinline bool 00111 ToValues<I>::operator ()(void) const { 00112 return (cur <= max); 00113 } 00114 00115 template<class I> 00116 forceinline void 00117 ToValues<I>::operator ++(void) { 00118 ++cur; 00119 if (cur > max) { 00120 ++i; 00121 if (i()) { 00122 cur = i.min(); max = i.max(); 00123 } 00124 } 00125 } 00126 00127 template<class I> 00128 forceinline int 00129 ToValues<I>::val(void) const { 00130 return cur; 00131 } 00132 00133 }}} 00134 00135 // STATISTICS: iter-any 00136