//
//  Calculation.h
//  LeanCalc
//
//  Created by Marc Liyanage on 04.02.05.
//  Copyright 2005 __MyCompanyName__. All rights reserved.
//

#import <Cocoa/Cocoa.h>
#include <setjmp.h>
#include "calc/zmath.h"
#include "calc/value.h"

@interface Calculation : NSObject <NSCoding> {
	NSString *expression;
	id next;
}

- (NSString *)result;
- (NSString *)shortcut;
- (int)historyIndex;
- (BOOL)expressionIsEmpty;

@end