62 lines
1.2 KiB
Objective-C
62 lines
1.2 KiB
Objective-C
//
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// MPToken.h
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// MathPad
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//
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// Created by Kim Wittenburg on 19.09.14.
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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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typedef NS_ENUM(NSUInteger, MPTokenType) {
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MPEOFToken = 0,
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MPMultiplicationSymbolToken,
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MPOperatorListToken,
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MPSinToken,
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MPCosToken,
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MPTanToken,
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MPNumberToken,
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MPVariableToken,
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MPFactorialToken,
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MPEqualsToken,
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MPGenericFunctionToken,
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MPWhitespaceToken,
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MPUnidentifiedToken,
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MPCompoundToken
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};
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@protocol MPToken <NSObject>
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- (MPTokenType)tokenType;
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- (NSRange)range;
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- (NSString *)stringValue;
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@end
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@interface MPToken : NSObject <MPToken>
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- (instancetype)initEOFTokenAtLocation:(NSUInteger)eofLocation;
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- (instancetype)initWithRange:(NSRange)range
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stringValue:(NSString *)input;
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- (instancetype)initWithTokenType:(MPTokenType)tokenType
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range:(NSRange)range
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stringValue:(NSString *)input;
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@end
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@interface MPToken (MPTokenExtension)
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// Methods are only available for respective token type
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- (NSUInteger)numberOfOperators;
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- (NSDecimalNumber *)operatorValue;
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- (NSDecimalNumber *)number;
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- (NSString *)variable;
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@end |