Implement DOM: prepend, append, before, after & replaceWith

Source/core/dom/Node.cpp

Index: Source/core/dom/Node.cpp
diff --git a/Source/core/dom/Node.cpp b/Source/core/dom/Node.cpp
index 56fb995d78a7033954fdda8b5b547b0d8d05500c..ab4aabc8ca8e0f453da7cd2d4c16b43617c30896 100644
--- a/Source/core/dom/Node.cpp
+++ b/Source/core/dom/Node.cpp
@@ -382,6 +382,26 @@ void Node::clearRareData()
 }
 #endif
 
+PassRefPtrWillBeRawPtr<Node> Node::nodeOrStringToNode(const NodeOrString& nodeOrString)
+{
+    if (nodeOrString.isNode())
+        return nodeOrString.getAsNode();
+    return Text::create(document(), nodeOrString.getAsString());
+}
+
+PassRefPtrWillBeRawPtr<Node> Node::convertNodesIntoNode(const HeapVector<NodeOrString>& nodes)
+{
+    RefPtrWillBeRawPtr<Node> node = nullptr;
+    if (nodes.size() == 1) {
+        node = nodeOrStringToNode(nodes[0]);

[philipj_slow, 2015/06/15 10:06:58]

The spec is on this form, but would this be clearer with a simple return
nodeOrStringToNode(nodes[0]) here? It should also avoid some ref counting churn
in the case where the single argument is a node, which ought to be a common
case.

Then the below can begin "RefPtrWillBeRawPtr<DocumentFragment> fragment =
DocumentFragment::create(document())"

[Paritosh Kumar, 2015/06/23 13:32:09]

Thanks. Done.

[philipj_slow, 2015/06/25 13:13:23]

Looks good this way, thanks!

+    } else {
+        node = DocumentFragment::create(document());
+        for (const NodeOrString& nodeOrString : nodes)
+            node->appendChild(nodeOrStringToNode(nodeOrString), ASSERT_NO_EXCEPTION);
+    }
+    return node.release();
+}
+
 Node* Node::toNode()
 {
     return this;
@@ -501,6 +521,45 @@ PassRefPtrWillBeRawPtr<Node> Node::appendChild(PassRefPtrWillBeRawPtr<Node> newC
     return nullptr;
 }
 
+void Node::prepend(const HeapVector<NodeOrString>& nodes, ExceptionState& exceptionState)
+{
+    RefPtrWillBeRawPtr<Node> nodeToPrepend = convertNodesIntoNode(nodes);
+    this->insertBefore(nodeToPrepend, this->firstChild(), exceptionState);
+}
+
+void Node::append(const HeapVector<NodeOrString>& nodes, ExceptionState& exceptionState)
+{
+    RefPtrWillBeRawPtr<Node> nodeToAppend = convertNodesIntoNode(nodes);
+    this->appendChild(nodeToAppend, exceptionState);
+}
+
+void Node::before(const HeapVector<NodeOrString>& nodes, ExceptionState& exceptionState)
+{
+    Node* parent = parentNode();
+    if (!parent)
+        return;
+    RefPtrWillBeRawPtr<Node> nodeToInsert = convertNodesIntoNode(nodes);
+    parent->insertBefore(nodeToInsert, this, exceptionState);
+}
+
+void Node::after(const HeapVector<NodeOrString>& nodes, ExceptionState& exceptionState)
+{
+    Node* parent = parentNode();
+    if (!parent)
+        return;
+    RefPtrWillBeRawPtr<Node> nodeToInsert = convertNodesIntoNode(nodes);
+    parent->insertBefore(nodeToInsert, this->nextSibling(), exceptionState);
+}
+
+void Node::replaceWith(const HeapVector<NodeOrString>& nodes, ExceptionState& exceptionState)
+{
+    Node* parent = parentNode();
+    if (!parent)
+        return;
+    RefPtrWillBeRawPtr<Node> nodeToReplaceWith = convertNodesIntoNode(nodes);
+    parent->replaceChild(nodeToReplaceWith, this, exceptionState);
+}
+
 void Node::remove(ExceptionState& exceptionState)
 {
     if (ContainerNode* parent = parentNode())