From b8a3fb4c7e4f5fa2535e3a3e65714e9e39bab568 Mon Sep 17 00:00:00 2001 From: Matthias Benkard Date: Wed, 27 Aug 2008 22:28:44 +0200 Subject: Add beginnings of a graphical listener. --- MLKListenerController.m | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 MLKListenerController.m (limited to 'MLKListenerController.m') diff --git a/MLKListenerController.m b/MLKListenerController.m new file mode 100644 index 0000000..c43aff9 --- /dev/null +++ b/MLKListenerController.m @@ -0,0 +1,44 @@ +/* -*- mode: objc; coding: utf-8 -*- */ +/* Toilet Lisp, a Common Lisp subset for the Étoilé runtime. + * Copyright (C) 2008 Matthias Andreas Benkard. + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or (at + * your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#import "MLKListenerController.h" +#import "MLKReader.h" + +@implementation MLKListenerController +- (IBAction)submit:(id)sender +{ + id object; + NSString *input = [inputField stringValue]; + + NS_DURING + { + object = [MLKReader readFromString:input]; + } + NS_HANDLER + { + // A parsing error. Beep and let the user try again. + // XXX Maybe the status line could be made to provide more information on the error. + NSBeep(); + [inputField selectText:self]; + return; + } + NS_ENDHANDLER; + + [inputField setStringValue:@""]; +} +@end -- cgit v1.2.3