21 lines
412 B
Objective-C
21 lines
412 B
Objective-C
//
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// MPExpressionTreeElement.h
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// MathPad
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//
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// Created by Kim Wittenburg on 09.10.14.
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// Copyright (c) 2014 Kim Wittenburg. All rights reserved.
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//
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@class MPTokenStream;
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@protocol MPExpressionTreeElement <NSObject>
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@required
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- (instancetype)init;
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- (instancetype)initWithTokenStream:(MPTokenStream *)tokenStream;
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- (BOOL)validate:(NSError *__autoreleasing *)error;
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- (NSDecimalNumber *)evaluate;
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@end
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