Renamed MPRange to MPRangePath

Added MPRangeExtension Category on MPExpression

MathPad/MPRangePath.h

@@ -0,0 +1,47 @@
+//
+//  MPRange.h
+//  MathPad
+//
+//  Created by Kim Wittenburg on 18.04.14.
+//  Copyright (c) 2014 Kim Wittenburg. All rights reserved.
+//
+
+#import "MPExpression.h"
+
+@interface MPRangePath : NSObject <NSCopying, NSCoding>
+
+#pragma mark Creation Methods
+
+- (instancetype)init;
+- (instancetype)initWithLocation:(NSIndexPath *)location
+                          length:(NSUInteger)length;
+- (instancetype)initWithRange:(NSRange)aRange;
+
++ (instancetype)emptyRangePath;
++ (instancetype)rangePathWithLocation:(NSIndexPath *)location
+                           length:(NSUInteger)length;
++ (instancetype)rangePathWithRange:(NSRange)aRange;
+
+#pragma mark Properties
+
+@property (nonatomic, strong) NSIndexPath *location;
+@property (nonatomic) NSUInteger length;
+
+- (NSIndexPath *)maxRangePath;
+- (NSRange)rangeAtLastIndex;
+
+#pragma mark Working with Ranges
+
+- (BOOL)containsRangePath:(MPRangePath *)aRangePath;
+- (BOOL)containsLocation:(NSIndexPath *)location;
+
+- (BOOL)isEqual:(id)object;
+- (BOOL)isEqualToRangePath:(MPRangePath *)aRangePath;
+
+@end
+
+@interface MPExpression (MPRangeExtension)
+
+- (MPExpression *)subexpressionWithRangePath:(MPRangePath *)aRangePath; // If location points to expression (in function) nil is returned
+
+@end