01: /*
02: * Jatha - a Common LISP-compatible LISP library in Java.
03: * Copyright (C) 1997-2005 Micheal Scott Hewett
04: *
05: * This library is free software; you can redistribute it and/or
06: * modify it under the terms of the GNU Lesser General Public
07: * License as published by the Free Software Foundation; either
08: * version 2.1 of the License, or (at your option) any later version.
09: *
10: * This library is distributed in the hope that it will be useful,
11: * but WITHOUT ANY WARRANTY; without even the implied warranty of
12: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13: * Lesser General Public License for more details.
14: *
15: * You should have received a copy of the GNU Lesser General Public
16: * License along with this library; if not, write to the Free Software
17: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18: *
19: *
20: * For further information, please contact Micheal Hewett at
21: * hewett@cs.stanford.edu
22: *
23: */
24:
25: package org.jatha.compile;
26:
27: import org.jatha.Jatha;
28: import org.jatha.dynatype.*;
29: import org.jatha.machine.*;
30:
31: public class SetPrimitive extends LispPrimitive {
32: public SetPrimitive(Jatha lisp) {
33: super (lisp, "SET", 2);
34: }
35:
36: public void Execute(SECDMachine machine) {
37: LispValue arg2 = machine.S.pop();
38: LispValue arg1 = machine.S.pop();
39:
40: machine.S.push(arg1.setf_symbol_value(arg2));
41: machine.C.pop();
42: }
43:
44: // TODO: Fix SetPrimitive - doesn't handle local vars correctly
45: // 13 Dec 2005 (mh)
46: // SET is not compiling correctly (noticed by Ola Bini).
47: // If the variable being set is a bound variable (i.e. in a LET)
48: // the global value of the variable is set instead of the local value.
49: // Fixed SETQ, but don't know how to fix SET.
50:
51: }
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