Improved Evaluation

MathPad/MPFunction+MPToken.m

@@ -0,0 +1,34 @@
+//
+//  MPFunction+MPToken.m
+//  MathPad
+//
+//  Created by Kim Wittenburg on 19.09.14.
+//  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
+//
+
+#import "MPFunction+MPToken.h"
+
+@implementation MPFunction (MPToken)
+
+- (MPTokenType)tokenType
+{
+    return MPGenericFunctionToken;
+}
+
+- (NSRange)range
+{
+    NSUInteger selfIndex = [self.parent indexOfElement:self];
+    return NSMakeRange([self.parent locationOfElementAtIndex:selfIndex], 1);
+}
+
+- (BOOL)exists
+{
+    return YES;
+}
+
+- (NSString *)stringValue
+{
+    return [self description];
+}
+
+@end