//
//  MPMathRules.h
//  MathPad
//
//  Created by Kim Wittenburg on 14.09.14.
//  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
//

#import <Foundation/Foundation.h>

FOUNDATION_EXPORT NSString *MPMathRulesAllowsImplicitMultiplicationKey;
FOUNDATION_EXPORT NSString *MPMathRulesMaximumOperatorChainLengthKey;
FOUNDATION_EXPORT NSString *MPMathRulesMaximumOperatorChainLengthInMultiplicationKey;
FOUNDATION_EXPORT NSString *MPMathRulesMaximumOperatorChainLengthInFunctionKey;
FOUNDATION_EXPORT NSString *MPMathRulesIsUsingDegreesKey;

@interface MPMathRules : NSObject

+ (MPMathRules *)sharedRules;

@property (nonatomic, getter = isUsingUserDefaultValues) BOOL usingUserDefaultValues;

@property (nonatomic) BOOL allowsImplicitMultiplication; // wether 2 3 is equal to 6 or error
// Default value uses the key "..." in NSUserDefaults or ... if the key does not exist.
@property (nonatomic) NSUInteger maximumOperatorChainLength; // +--++-5 -> Chain length: 6, 2 default (sign of number and operator) (0 is invalid?)
@property (nonatomic) NSUInteger maximumOperatorChainLengthInMultiplication; // Default: 1, 0 means actually 0
@property (nonatomic) NSUInteger maximumOperatorChainLengthInFunction; // For sin, cos, tan. Default: 1

@property (nonatomic) BOOL isUsingDegrees;

@end