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: /**
32: * Implements load-from-container. Loads the given file
33: * from the current jar, using getResource.
34: * Normally takes one argument, for example "images/icon.gif".
35: * Do not use a leading slash.
36: * The two-argument version takes a filename as the first argument
37: * and the URL of a jar file as the second argument.
38: */
39: public class LoadFromJarPrimitive extends LispPrimitive {
40: public LoadFromJarPrimitive(Jatha lisp) {
41: super (lisp, "LOAD-FROM-JAR", 1, 2);
42: }
43:
44: public void Execute(SECDMachine machine) {
45: LispValue args = machine.S.pop();
46: LispValue filename = args.car();
47: LispValue containerURL = args.second();
48:
49: machine.C.pop(); // Remove the opcode.
50:
51: if (containerURL != f_lisp.NIL) // Jar file URL specified
52: machine.S.push(f_lisp.loadFromJar(filename, containerURL));
53:
54: else
55: machine.S.push(f_lisp.loadFromJar(filename));
56: }
57:
58: // 1 or 2 evaluated args
59: public LispValue CompileArgs(LispCompiler compiler,
60: SECDMachine machine, LispValue args, LispValue valueList,
61: LispValue code) throws CompilerException {
62: return compiler.compileArgsLeftToRight(args, valueList, f_lisp
63: .makeCons(machine.LIS, f_lisp.makeCons(args.length(),
64: code)));
65: }
66: }
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