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/* -*- mode: objc; coding: utf-8 -*- */
/* Étoilisp/Mulklisp, 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 "MLKNumber.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)
@end