1 ////////////////////////////////////////////////////////////////////////////////
2 // MillScript: an Open Spice interpreter and batch website creation tool
3 // Copyright (C) 2001-2004 Open World Ltd
4 // Copyright (C) 2005 Kevin Rogers
5 //
6 // This file is part of MillScript.
7 //
8 // MillScript is free software; you can redistribute it and/or modify it under
9 // the terms of the GNU General Public License as published by the Free
10 // Software Foundation; either version 2 of the License, or (at your option)
11 // any later version.
12 //
13 // MillScript is distributed in the hope that it will be useful, but WITHOUT
14 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 // more details.
17 //
18 // You should have received a copy of the GNU General Public License along with
19 // MillScript; if not, write to the Free Software Foundation, Inc., 59 Temple
20 // Place, Suite 330, Boston, MA 02111-1307 USA
21 ////////////////////////////////////////////////////////////////////////////////
22 package org.millscript.millscript.expr;
23
24 import org.millscript.millscript.alert.Alerts;
25 import org.millscript.millscript.vm.Ref;
26
27 // At present globals and locals have an identical run-time.
28 // This is yukky, obviously enough, so I have pre-adapted the
29 // code for completely separate implementations. It will not
30 // be trivial - but it will be reasonably simple.
31
32 public abstract class Ident {
33 protected String sym;
34 protected Ref ref;
35 protected boolean isConst = false;
36
37 public boolean isAlien() {
38 return false;
39 }
40
41 public Ident setIsConst( final boolean p ) {
42 isConst = p;
43 return this;
44 }
45
46 public boolean getIsConst() {
47 return isConst;
48 }
49
50 public String getName() {
51 return sym;
52 }
53
54 void setRef( final Ref r ) {
55 if ( r == null ) {
56 throw(
57 Alerts.fault( "setRef sees null instead of a Ref" ).mishap()
58 );
59 }
60 ref = r;
61 }
62
63 Ident( final String s ) {
64 sym = s.intern();
65 }
66
67 /**
68 * @return this Ref this ident points to
69 */
70 public Ref getRef() {
71 return ref;
72 }
73
74 }