ranges-empty.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 00042 class Empty { 00043 public: 00045 00046 00047 Empty(void); 00049 void init(void); 00051 00053 00054 00055 bool operator ()(void) const; 00057 void operator ++(void); 00059 00061 00062 00063 int min(void) const; 00065 int max(void) const; 00067 unsigned int width(void) const; 00069 }; 00070 00071 00072 forceinline 00073 Empty::Empty(void) {} 00074 00075 forceinline void 00076 Empty::init(void) {} 00077 00078 forceinline void 00079 Empty::operator ++(void) { 00080 GECODE_NEVER; 00081 } 00082 00083 forceinline bool 00084 Empty::operator ()(void) const { 00085 return false; 00086 } 00087 00088 forceinline int 00089 Empty::min(void) const { 00090 GECODE_NEVER; 00091 return 0; 00092 } 00093 forceinline int 00094 Empty::max(void) const { 00095 GECODE_NEVER; 00096 return 0; 00097 } 00098 forceinline unsigned int 00099 Empty::width(void) const { 00100 GECODE_NEVER; 00101 return 0; 00102 } 00103 00104 }}} 00105 00106 // STATISTICS: iter-any 00107