28 lines
852 B
Objective-C
28 lines
852 B
Objective-C
//
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// MPExpressionEvaluator.h
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// MathPad
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//
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// Created by Kim Wittenburg on 31.08.14.
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// Copyright (c) 2014 Kim Wittenburg. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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#import "MPExpression.h"
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#import "MPElementParser.h"
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@class MPExpressionEvaluator, MPExpression, MPParsedElementOld;
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@interface MPExpressionEvaluator : NSObject
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// Do not instanciate yourself, use evaluator property of MPExpression instead
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- (instancetype)initWithExpression:(MPExpression *)expression;
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@property (readonly, nonatomic, weak) MPExpression *expression;
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#pragma mark Evaluating Expressions
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@property (readonly, nonatomic, strong) NSString *definedVariable;
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- (NSDecimalNumber *)evaluateWithError:(MPParseError *__autoreleasing *)error;
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- (NSDecimalNumber *)evaluateVariableDefinition:(BOOL)flag error:(MPParseError *__autoreleasing *)error;
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@end
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