1 /********************************************************************************
2 *
3 * Copyright (c) 2008 Fujitsu Services Ltd.
4 *
5 * Author: Nick Battle
6 *
7 * This file is part of VDMJ.
8 *
9 * VDMJ is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * VDMJ is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with VDMJ. If not, see <http://www.gnu.org/licenses/>.
21 *
22 ******************************************************************************/
23
24 package org.overturetool.vdmj.expressions;
25
26 import org.overturetool.vdmj.lex.LexCharacterToken;
27 import org.overturetool.vdmj.runtime.Context;
28 import org.overturetool.vdmj.typechecker.Environment;
29 import org.overturetool.vdmj.typechecker.NameScope;
30 import org.overturetool.vdmj.types.CharacterType;
31 import org.overturetool.vdmj.types.Type;
32 import org.overturetool.vdmj.types.TypeList;
33 import org.overturetool.vdmj.values.CharacterValue;
34 import org.overturetool.vdmj.values.Value;
35
36 public class CharLiteralExpression extends Expression
37 {
38 private static final long serialVersionUID = 1L;
39 public final LexCharacterToken value;
40
41 public CharLiteralExpression(LexCharacterToken value)
42 {
43 super(value.location);
44 this.value = value;
45 }
46
47 @Override
48 public String toString()
49 {
50 return new CharacterValue(value.unicode).toString();
51 }
52
53 @Override
54 public Type typeCheck(Environment env, TypeList qualifiers, NameScope scope)
55 {
56 return new CharacterType(location);
57 }
58
59 @Override
60 public Value eval(Context ctxt)
61 {
62 breakpoint.check(location, ctxt);
63 return new CharacterValue(value.unicode);
64 }
65
66 @Override
67 public String kind()
68 {
69 return "char";
70 }
71 }