2 Copyright (C) 2000-2005 SKYRIX Software AG
4 This file is part of SOPE.
6 SOPE is free software; you can redistribute it and/or modify it under
7 the terms of the GNU Lesser General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 SOPE is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
14 License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with SOPE; see the file COPYING. If not, write to the
18 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
29 @interface EONull : NSNull
32 @implementation EONull
34 + (id)allocWithZone:(NSZone *)_zone {
35 return [NSNull allocWithZone:_zone];
48 @implementation NSNull(ExprValue)
54 - (NSString *)expressionValueForContext:(id)context {
55 /* context is really EOExpressionArray .. */
59 @end /* EONull(ExprValue) */