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 AproposPrimitive extends LispPrimitive {
32: public AproposPrimitive(Jatha lisp) {
33: super (lisp, "APROPOS", 1, 2);
34: }
35:
36: public void Execute(SECDMachine machine) {
37: LispValue args = machine.S.pop();
38: LispValue str = args.car();
39: LispValue pkgArg = args.second();
40: LispValue pkg;
41:
42: if (str instanceof LispString) {
43: if (pkgArg != f_lisp.NIL) // Package specified
44: {
45: pkg = f_lisp.findPackage(pkgArg);
46: if (pkg == f_lisp.NIL) // Non-existent package
47: System.err
48: .println("\n;; * Warning: package '"
49: + pkgArg
50: + "' does not exist. Searching all packages.");
51: } else
52: pkg = f_lisp.NIL;
53:
54: machine.S.push(f_lisp.apropos(str, pkg));
55: machine.C.pop();
56: } else {
57: System.err
58: .println("\n;; *** The first argument to APROPOS is not a string");
59: machine.S.push(f_lisp.NIL);
60: machine.C.pop();
61: }
62: }
63:
64: // 1 or 2 evaluated args
65: public LispValue CompileArgs(LispCompiler compiler,
66: SECDMachine machine, LispValue args, LispValue valueList,
67: LispValue code) throws CompilerException {
68: return compiler.compileArgsLeftToRight(args, valueList, f_lisp
69: .makeCons(machine.LIS, f_lisp.makeCons(args.length(),
70: code)));
71: }
72: }
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