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 // Class for dag nodes containing strings.
25 //
26 #ifndef _stringDagNode_hh_
27 #define _stringDagNode_hh_
28 #include "rope.hh"
29 #include "NA_DagNode.hh"
30
31 class StringDagNode : public NA_DagNode
32 {
33 public:
34 StringDagNode(StringSymbol* symbol, const Rope& value);
35
36 size_t getHashValue();
37 int compareArguments(const DagNode* other) const;
38 void overwriteWithClone(DagNode* old);
39 DagNode* makeClone();
40
41 const Rope& getValue() const;
42
43 private:
44 const Rope value; // assume that sizeof(Rope) <= DagNode::nrWords
45 };
46
47 inline const Rope&
getValue() const48 StringDagNode::getValue() const
49 {
50 return value;
51 }
52
53 #endif
54