//
//  MPParenthesisFunction.m
//  MathPad
//
//  Created by Kim Wittenburg on 17.09.14.
//  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
//

#import "MPParenthesisFunction.h"
#import "MPExpressionEvaluator.h"

@implementation MPParenthesisFunction

MPFunctionAccessorImplementation(Expression, _expression)

//- (void)setExpression:(MPExpression *)expression
//{
//    _expression.parent = nil;
//    _expression = expression;
//    _expression.parent = self;
//}

- (NSArray *)childrenAccessors
{
    return @[@"expression"];
}

- (MPTerm *)parseWithError:(MPParseError *__autoreleasing *)error
{
    MPExpressionEvaluator *evaluator = self.expression.evaluator;
    return [evaluator parseExpectingVariable:NO
                                       error:error];
}

- (NSString *)description
{
    return [NSString stringWithFormat:@"(%@)", self.expression.description];
}

@end