01: /*
02: * file_length.java
03: *
04: * Copyright (C) 2004 Peter Graves
05: * $Id: file_length.java,v 1.4 2004/05/12 16:45:26 piso Exp $
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License
09: * as published by the Free Software Foundation; either version 2
10: * of the License, or (at your option) any later version.
11: *
12: * This program is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: * GNU General Public License for more details.
16: *
17: * You should have received a copy of the GNU General Public License
18: * along with this program; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20: */
21:
22: package org.armedbear.lisp;
23:
24: public final class file_length extends Primitive1 {
25: private file_length() {
26: super ("file-length", "stream");
27: }
28:
29: // ### file-length
30: // file-length stream => length
31: public LispObject execute(LispObject arg) throws ConditionThrowable {
32: try {
33: return ((Stream) arg).fileLength();
34: } catch (ClassCastException e) {
35: return signal(new TypeError(arg, Symbol.STREAM));
36: }
37: }
38:
39: private static final Primitive1 FILE_LENGTH = new file_length();
40: }
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