Add Node methods to prepend nodes

HTMLKit/HTMLNode.h

@@ -67,12 +67,16 @@ typedef NS_ENUM(short, HTMLNodeType)
 
 - (NSUInteger)indexOfChildNode:(HTMLNode *)node;
 
-- (HTMLNode *)insertNode:(HTMLNode *)node beforeChildNode:(HTMLNode *)child;
+- (HTMLNode *)prependNode:(HTMLNode *)node;
+
+- (void)prependNodes:(NSArray *)nodes;
 
 - (HTMLNode *)appendNode:(HTMLNode *)node;
 
 - (void)appendNodes:(NSArray *)nodes;
 
+- (HTMLNode *)insertNode:(HTMLNode *)node beforeChildNode:(HTMLNode *)child;
+
 - (HTMLNode *)replaceChildNode:(HTMLNode *)node withNode:(HTMLNode *)replacement;
 
 - (void)replaceAllChildNodesWithNode:(HTMLNode *)node;

HTMLKit/HTMLNode.m

@@ -139,6 +139,18 @@
 	return [self.childNodes indexOfObject:node];
 }
 
+- (HTMLNode *)prependNode:(HTMLNode *)node
+{
+	return [self insertNode:node beforeChildNode:self.firstChiledNode];
+}
+
+- (void)prependNodes:(NSArray *)nodes
+{
+	for (id node in nodes.reverseObjectEnumerator) {
+		[self insertNode:node beforeChildNode:self.firstChiledNode];
+	}
+}
+
 - (HTMLNode *)appendNode:(HTMLNode *)node
 {
 	return [self insertNode:node beforeChildNode:nil];

HTMLKitTests/HTMLKitMutationAlgorithmsTests.m

@@ -18,30 +18,6 @@ extern uint64_t dispatch_benchmark(size_t count, void (^block)(void));
 
 @implementation HTMLKitMutationAlgorithmsTests
 
-- (void)testAppendDocumentFragment
-{
-	HTMLElement *element = [[HTMLElement alloc] initWithTagName:@"div"];
-	HTMLComment *comment = [HTMLComment new];
-	[element appendNode:comment];
-
-	HTMLDocumentFragment *fragment = [HTMLDocumentFragment new];
-	HTMLElement *firstChild = [HTMLElement new];
-	HTMLElement *secondChild = [HTMLElement new];
-	[fragment appendNode:firstChild];
-	[fragment appendNode:secondChild];
-
-	[element appendNode:fragment];
-	XCTAssertEqual(element.childNodesCount, 3);
-	XCTAssertEqual(fragment.childNodesCount, 0);
-
-	XCTAssertEqualObjects(firstChild.parentNode, element);
-	XCTAssertEqualObjects(secondChild.parentNode, element);
-	XCTAssertEqualObjects(element.firstChiledNode, comment);
-	XCTAssertEqualObjects(element.firstChiledNode.nextSibling, firstChild);
-	XCTAssertEqualObjects(element.lastChildNode.previousSibling, firstChild);
-	XCTAssertEqualObjects(element.lastChildNode, secondChild);
-}
-
 - (void)testValidParentNodeWhenAppending
 {
 	HTMLElement *element = [[HTMLElement alloc] initWithTagName:@"div"];

HTMLKitTests/HTMLKitNodesTests.m

@@ -44,6 +44,73 @@
 	XCTAssertNil(node.lastChildNode);
 }
 
+- (void)testAppendNode
+{
+	HTMLElement *element = [[HTMLElement alloc] initWithTagName:@"div"];
+	HTMLComment *comment = [HTMLComment new];
+	[element appendNode:comment];
+
+	XCTAssertEqual(element.childNodesCount, 1);
+	XCTAssertEqual(element.firstChiledNode, comment);
+
+	HTMLElement *firstElement = [HTMLElement new];
+	HTMLElement *secondElement = [HTMLElement new];
+	NSArray *nodes = @[firstElement, secondElement];
+
+	[element appendNodes:nodes];
+
+	XCTAssertEqual(element.childNodesCount, 3);
+	XCTAssertEqual(element.firstChiledNode, comment);
+	XCTAssertEqual(element.lastChildNode, secondElement);
+}
+
+- (void)testPrependNode
+{
+	HTMLElement *element = [[HTMLElement alloc] initWithTagName:@"div"];
+	HTMLText *text = [HTMLText new];
+	[element appendNode:text];
+
+	HTMLComment *comment = [HTMLComment new];
+	[element prependNode:comment];
+
+	XCTAssertEqual(element.childNodesCount, 2);
+	XCTAssertEqual(element.firstChiledNode, comment);
+
+	HTMLElement *firstElement = [HTMLElement new];
+	HTMLElement *secondElement = [HTMLElement new];
+	NSArray *nodes = @[firstElement, secondElement];
+
+	[element prependNodes:nodes];
+
+	XCTAssertEqual(element.childNodesCount, 4);
+	XCTAssertEqual(element.firstChiledNode, firstElement);
+	XCTAssertEqual(element.lastChildNode, text);
+}
+
+- (void)testAppendDocumentFragment
+{
+	HTMLElement *element = [[HTMLElement alloc] initWithTagName:@"div"];
+	HTMLComment *comment = [HTMLComment new];
+	[element appendNode:comment];
+
+	HTMLDocumentFragment *fragment = [HTMLDocumentFragment new];
+	HTMLElement *firstChild = [HTMLElement new];
+	HTMLElement *secondChild = [HTMLElement new];
+	[fragment appendNode:firstChild];
+	[fragment appendNode:secondChild];
+
+	[element appendNode:fragment];
+	XCTAssertEqual(element.childNodesCount, 3);
+	XCTAssertEqual(fragment.childNodesCount, 0);
+
+	XCTAssertEqualObjects(firstChild.parentNode, element);
+	XCTAssertEqualObjects(secondChild.parentNode, element);
+	XCTAssertEqualObjects(element.firstChiledNode, comment);
+	XCTAssertEqualObjects(element.firstChiledNode.nextSibling, firstChild);
+	XCTAssertEqualObjects(element.lastChildNode.previousSibling, firstChild);
+	XCTAssertEqualObjects(element.lastChildNode, secondChild);
+}
+
 - (void)testParentNode
 {
 	HTMLNode *node = [[HTMLNode alloc] initWithName:@"name" type:HTMLNodeElement];