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/* -*- 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 <http://www.gnu.org/licenses/>.
*/
#import "MLKInteger.h"
#import "MLKNumber.h"
#import <Foundation/NSException.h>
#import <Foundation/NSString.h>
@implementation MLKNumber
#define DECLARE_ABSTRACT(SIGNATURE, RETURN_VALUE) \
SIGNATURE \
{ \
[NSException raise:@"MLKInternalInconsistencyError" \
format:@"Tried to invoke an abstract method."]; \
return RETURN_VALUE; \
}
DECLARE_ABSTRACT (-(MLKNumber *) add:(MLKNumber *)arg, nil)
DECLARE_ABSTRACT (-(MLKNumber *) subtract:(MLKNumber *)arg, nil)
DECLARE_ABSTRACT (-(MLKNumber *) multiplyWith:(MLKNumber *)arg, nil)
DECLARE_ABSTRACT (-(MLKNumber *) divideBy:(MLKNumber *)arg, nil)
-(MLKNumber *) numerator
{
return self;
}
-(MLKNumber *) denominator
{
return [MLKInteger integerWithInt:1];
}
DECLARE_ABSTRACT (-(double) doubleValue, 0.0)
@end
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