//
//  MPToken.h
//  MathPad
//
//  Created by Kim Wittenburg on 19.09.14.
//  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
//

#import <Foundation/Foundation.h>

typedef NS_ENUM(NSUInteger, MPTokenType) {
    MPEOFToken = 0,
    MPMultiplicationSymbolToken,
    MPOperatorListToken,
    MPSinToken,
    MPCosToken,
    MPTanToken,
    MPASinToken,
    MPACosToken,
    MPATanToken,
    MPNumberToken,
    MPVariableToken,
    MPFactorialToken,
    MPEqualsToken,
    MPGenericFunctionToken,
    
    MPWhitespaceToken,
    MPUnidentifiedToken,
};

@protocol MPToken <NSObject>

- (MPTokenType)tokenType;

- (NSRange)range;
- (NSString *)stringValue;

@end


@interface MPToken : NSObject <MPToken>

- (instancetype)initEOFTokenAtLocation:(NSUInteger)eofLocation;
- (instancetype)initWithTokenType:(MPTokenType)tokenType
                            range:(NSRange)range
                      stringValue:(NSString *)input;

@end