violations.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, 2009 00008 * 00009 * Last modified: 00010 * $Date: 2010-07-14 17:46:18 +0200 (Wed, 14 Jul 2010) $ 00011 * $Revision: 11192 $ 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 #include <climits> 00039 #include <cmath> 00040 00041 namespace Gecode { namespace Int { namespace Sequence { 00042 00044 class Violations : public Support::BitSetBase { 00045 protected: 00047 mutable unsigned int fst; 00048 public: 00050 Violations(void); 00052 void init(Space& home, unsigned int n); 00054 void update(Space& home, bool shared, Violations& v); 00056 bool empty(void) const; 00058 void add(unsigned int i); 00060 unsigned int get(void); 00061 }; 00062 00063 00064 forceinline 00065 Violations::Violations(void) : fst(0) {} 00066 00067 forceinline void 00068 Violations::init(Space& home, unsigned int n) { 00069 Support::BitSetBase::init(home,n); 00070 fst=size(); 00071 } 00072 00073 forceinline bool 00074 Violations::empty(void) const { 00075 fst = next(fst); 00076 return fst >= size(); 00077 } 00078 00079 forceinline void 00080 Violations::update(Space& home, bool, Violations& v) { 00081 assert(v.empty()); 00082 init(home,v.size()); 00083 } 00084 00085 forceinline void 00086 Violations::add(unsigned int i) { 00087 set(i); if (i < fst) fst = i; 00088 } 00089 00090 forceinline unsigned int 00091 Violations::get(void) { 00092 assert(!empty()); 00093 fst = next(fst); 00094 assert(Support::BitSetBase::get(fst)); 00095 clear(fst); fst++; 00096 return fst-1; 00097 } 00098 00099 }}} 00100 00101 // STATISTICS: int-prop