Improved Evaluation

2014-09-28 23:50:18 +02:00
parent 43b6f78afb
commit d67a1949e9
19 changed files with 841 additions and 89 deletions
--- a/MathPad/MPTokenStream.h
+++ b/MathPad/MPTokenStream.h
@@ -0,0 +1,27 @@
+//
+//  MPTokenStream.h
+//  MathPad
+//
+//  Created by Kim Wittenburg on 20.09.14.
+//  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "MPToken.h"
+
+@interface MPTokenStream : NSObject
+
+- (instancetype)initWithTokens:(NSArray *)tokens;
+
+@property (nonatomic, copy) NSArray *tokens;
+@property (nonatomic, getter=isIgnoringWhitespaceTokens) BOOL ignoringWhitespaceTokens; // Default: YES
+
+@property (readonly, nonatomic) NSUInteger currentLocation;
+
+- (void)reset;
+- (BOOL)hasMoreTokens;
+
+- (MPToken *)nextToken;
+- (MPToken *)nextTokenOfType:(MPTokenType)type;
+
+@end