//
//  MPSuffixFunction.h
//  MathPad
//
//  Created by Kim Wittenburg on 11.10.14.
//  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
//

#import "MPFunction.h"



@class MPSuffixFunction;
@protocol MPValue;


/*!
    @class      MPSuffixFunction
    @brief      This is the common superclass for all functions that apply to the
                value preceeding them.
 
    @discussion One example for a suffix function is a power. Powers apply to a
                base value and are evaluated with very high priority. In fact the
                base value may not be used without previously having evaluated
                the suffix function.
 
                Another special thing about suffix functions is that they need to
                know more than their own children (namely the base value) to be
                evaluated. To be able to do this suffix functions have a special
                property @c baseValue that is set before the function is
                evaluated.
 */
@interface MPSuffixFunction : MPFunction

/*!
    @property   baseValue
    @brief      The receiver's base value.
 
    @discussion The base value is the thing a suffix function applies to (e.g.
                a power's base).
 */
@property (nonatomic, strong) id<MPValue> baseValue;

@end