Reorganized File Structure

Added Documentation

MathKit/MPFunction+MPToken.m

@@ -0,0 +1,38 @@
+//
+//  MPFunction+MPToken.m
+//  MathPad
+//
+//  Created by Kim Wittenburg on 19.09.14.
+//  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
+//
+
+#import "MPFunction+MPToken.h"
+
+#import "MPExpression.h"
+#import "MPPowerFunction.h"
+
+
+
+@implementation MPFunction (MPToken)
+
+- (MPTokenType)tokenType
+{
+    return [self isMemberOfClass:[MPPowerFunction class]] ? MPPowerToken : MPGenericFunctionToken;
+}
+
+
+- (NSRange)range
+{
+    return NSMakeRange([self.parent convertIndex:[self.parent indexOfElement:self]
+                              fromReferenceFrame:MPElementReferenceFrame
+                                toReferenceFrame:MPSymbolReferenceFrame],
+                       1);
+}
+
+
+- (NSString *)stringValue
+{
+    return [self description];
+}
+
+@end