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: * $Id: BlockPrimitive.java,v 1.1 2005/06/01 13:08:02 olagus Exp $
26: */package org.jatha.compile;
27:
28: import org.jatha.Jatha;
29: import org.jatha.dynatype.*;
30: import org.jatha.machine.*;
31:
32: /**
33: * <p>The Block primitive</p>
34: *
35: * @author <a href="mailto:Ola.Bini@itc.ki.se">Ola Bini</a>
36: * @version $Revision: 1.1 $
37: */
38: public class BlockPrimitive extends LispPrimitive {
39: public BlockPrimitive(final Jatha lisp) {
40: super (lisp, "BLOCK", 1, Long.MAX_VALUE);
41: inlineP = true;
42: }
43:
44: public void Execute(final SECDMachine machine) {
45: System.err.println("BLOCK was compiled - shouldn't have been.");
46: }
47:
48: public LispValue CompileArgs(final LispCompiler compiler,
49: final SECDMachine machine, final LispValue args,
50: final LispValue valueList, final LispValue code)
51: throws CompilerException {
52: final LispValue tag = args.car();
53: compiler.getLegalBlocks().push(tag);
54: final LispValue fullCode = f_lisp.makeList(f_lisp.makeCons(
55: f_lisp.getEval().intern("PROGN"), args.cdr()));
56: final LispValue compiledCode = compiler.compileArgsLeftToRight(
57: fullCode, valueList, f_lisp.makeCons(machine.BLK,
58: f_lisp.makeCons(tag, code)));
59: compiler.getLegalBlocks().pop();
60: return compiledCode;
61: }
62: }// BlockPrimitive
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