//
//  MPExpressionTree.h
//  MathPad
//
//  Created by Kim Wittenburg on 09.10.14.
//  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
//

#import "MPExpressionTreeElement.h"

@class MPExpressionTree;

@interface MPExpressionTree : NSObject <MPExpressionTreeElement>

@property (nonatomic, copy) NSString *definedVariable;
@property (readonly, nonatomic, strong) NSArray *summands;

- (BOOL)validateExpectingVariableDefinition:(BOOL)flag
                                      error:(NSError *__autoreleasing *)error;

@end