bool-expr.hpp
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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Guido Tack <tack@gecode.org> 00005 * 00006 * Copyright: 00007 * Guido Tack, 2004 00008 * 00009 * Last modified: 00010 * $Date: 2010-07-16 10:51:05 +0200 (Fri, 16 Jul 2010) $ by $Author: tack $ 00011 * $Revision: 11208 $ 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 { 00039 00040 /* 00041 * Operations for expressions 00042 * 00043 */ 00044 forceinline 00045 BoolExpr::Node::Node(void) : use(1) {} 00046 00047 forceinline void* 00048 BoolExpr::Node::operator new(size_t size) { 00049 return heap.ralloc(size); 00050 } 00051 forceinline void 00052 BoolExpr::Node::operator delete(void* p, size_t) { 00053 heap.rfree(p); 00054 } 00055 00056 forceinline 00057 BoolExpr::BoolExpr(const BoolExpr& e) : n(e.n) { 00058 n->use++; 00059 } 00060 00061 forceinline 00062 BoolExpr::BoolExpr(const BoolVar& x) : n(new Node) { 00063 n->same = 1; 00064 n->t = NT_VAR; 00065 n->l = NULL; 00066 n->r = NULL; 00067 n->x = x; 00068 } 00069 00070 forceinline 00071 BoolExpr::BoolExpr(const BoolExpr& l, NodeType t, const BoolExpr& r) 00072 : n(new Node) { 00073 int ls = ((l.n->t == t) || (l.n->t == NT_VAR)) ? l.n->same : 1; 00074 int rs = ((r.n->t == t) || (r.n->t == NT_VAR)) ? r.n->same : 1; 00075 n->same = ls+rs; 00076 n->t = t; 00077 n->l = l.n; 00078 n->l->use++; 00079 n->r = r.n; 00080 n->r->use++; 00081 } 00082 00083 forceinline 00084 BoolExpr::BoolExpr(const BoolExpr& l, NodeType t) { 00085 (void) t; 00086 assert(t == NT_NOT); 00087 if (l.n->t == NT_NOT) { 00088 n = l.n->l; 00089 n->use++; 00090 } else { 00091 n = new Node; 00092 n->same = 1; 00093 n->t = NT_NOT; 00094 n->l = l.n; 00095 n->l->use++; 00096 n->r = NULL; 00097 } 00098 } 00099 00100 forceinline 00101 BoolExpr::BoolExpr(const LinRel& rl) 00102 : n(new Node) { 00103 n->same = 1; 00104 n->t = NT_RLIN; 00105 n->l = NULL; 00106 n->r = NULL; 00107 n->rl = rl; 00108 } 00109 00110 #ifdef GECODE_HAS_SET_VARS 00111 forceinline 00112 BoolExpr::BoolExpr(const SetRel& rs) 00113 : n(new Node) { 00114 n->same = 1; 00115 n->t = NT_RSET; 00116 n->l = NULL; 00117 n->r = NULL; 00118 n->rs = rs; 00119 } 00120 00121 forceinline 00122 BoolExpr::BoolExpr(const SetCmpRel& rs) 00123 : n(new Node) { 00124 n->same = 1; 00125 n->t = NT_RSET; 00126 n->l = NULL; 00127 n->r = NULL; 00128 n->rs = rs; 00129 } 00130 #endif 00131 00132 inline BoolVar 00133 BoolExpr::expr(Home home, IntConLevel icl) const { 00134 Region r(home); 00135 return NNF::nnf(r,n,false)->expr(home,icl); 00136 } 00137 00138 inline void 00139 BoolExpr::rel(Home home, IntConLevel icl) const { 00140 Region r(home); 00141 return NNF::nnf(r,n,false)->rel(home,icl); 00142 } 00143 00144 } 00145 00146 // STATISTICS: minimodel-any