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Feature/add isdescendant and isancestor method #75

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Feature/add isdescendant and isancestor method #75

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94dc916
Add isDescendant and isAncestor method.
aoifukuoka Oct 6, 2016
ebb037a
Fix typo.
aoifukuoka Oct 6, 2016
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4 changes: 3 additions & 1 deletion KissXML/DDXMLNode.h
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Original file line number Diff line number Diff line change
Expand Up @@ -110,6 +110,8 @@ NS_ASSUME_NONNULL_BEGIN
@property (nullable, readonly, copy) DDXMLNode *nextNode;

- (void)detach;
- (BOOL)isDescendant:(DDXMLNode *)of;
- (BOOL)isAncestor:(DDXMLNode *)of;

@property (nullable, readonly, copy) NSString *XPath;

Expand Down Expand Up @@ -138,4 +140,4 @@ NS_ASSUME_NONNULL_BEGIN
//- (NSArray *)objectsForXQuery:(NSString *)xquery error:(NSError **)error;

@end
NS_ASSUME_NONNULL_END
NS_ASSUME_NONNULL_END
21 changes: 21 additions & 0 deletions KissXML/DDXMLNode.m
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Original file line number Diff line number Diff line change
Expand Up @@ -842,6 +842,27 @@ - (DDXMLNode *)nextNode
return nil;
}

/**
* Returns if node is descendant of the other node.
**/
- (BOOL)isDescendant:(DDXMLNode *)of
{
if (self.parent == nil)
return NO;
if (self.parent == of)
return YES;
else
return [self.parent isDescendant:of];
}

/**
* Returns if node is ancestor of the other node.
**/
- (BOOL)isAncestor:(DDXMLNode *)of
{
return [of isDescendant:self];
}

/**
* Detaches the receiver from its parent node.
*
Expand Down