1 /* 2 3 This file is part of the Maude 2 interpreter. 4 5 Copyright 1997-2003 SRI International, Menlo Park, CA 94025, USA. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. 20 21 */ 22 23 // 24 // Base class for non-algebraic built-in constant symbols. 25 // 26 #ifndef _NA_Symbol_hh_ 27 #define _NA_Symbol_hh_ 28 #include "symbol.hh" 29 30 class NA_Symbol : public Symbol 31 { 32 public: 33 NA_Symbol(int id); 34 35 Term* makeTerm(const Vector<Term*>& args); 36 DagNode* makeDagNode(const Vector<DagNode*>& args); 37 bool eqRewrite(DagNode* subject, RewritingContext& context); 38 void computeBaseSort(DagNode* subject); 39 void normalizeAndComputeTrueSort(DagNode* subject, RewritingContext& context); 40 void stackArguments(DagNode* subject, 41 Vector<RedexPosition>& stack, 42 int parentIndex); 43 bool isStable() const; 44 // 45 // Hash cons stuff. 46 // 47 DagNode* makeCanonical(DagNode* original, HashConsSet* /* hcs */); 48 DagNode* makeCanonicalCopy(DagNode* original, HashConsSet* /* hcs */); 49 }; 50 51 #endif 52