public object Capture(AstNode node)
{
if(node == null)
throw new ArgumentNullException("node");
return Capture(() => Visit(node));
}
public virtual void Visit(AstNode node)
{
if(node == null)
return;
if (node is ChildrenNode)
Visit((ChildrenNode)node);
else if (node is TextNode)
Visit((TextNode)node);
else if (node is TagNode)
Visit((TagNode)node);
else if (node is FilterNode)
Visit((FilterNode)node);
else if (node is CommentNode)
Visit((CommentNode)node);
else if (node is AttributeNode)
Visit((AttributeNode)node);
else if (node is DocTypeNode)
Visit((DocTypeNode)node);
else if (node is CodeNode)
Visit((CodeNode)node);
else if (node is CodeBlockNode)
Visit((CodeBlockNode)node);
else if (node is TextChunk)
Visit((TextChunk)node);
else if (node is CodeChunk)
Visit((CodeChunk)node);
else if (node is LateBindingNode)
Visit((LateBindingNode)node);
else if (node is MetaNode)
Visit((MetaNode)node);
else
throw new InvalidOperationException("unknown node");
}
public AstNode ParseLines(int baseIdentation, AstNode currentChild)
{
return ParseChildren(baseIdentation, currentChild, ParseMultiLineText);
}
public AstNode ParseChildren(int baseIdentation, AstNode currentChild)
{
return ParseChildren(baseIdentation, currentChild, ParseNode);
}
private AstNode ParseChildren(int baseIdentation, AstNode currentChild, ParseActionDelegate parser)
{
var nodes = new List<AstNode>();
while(Read())
{
var node = parser();
if(node != null)
nodes.Add(node);
if (Input.NextLine != null && Input.NextLine.Indent <= baseIdentation)
break;
}
if(nodes.Count > 0)
{
if(currentChild != null)
nodes.Insert(0, currentChild);
return new ChildrenNode(nodes);
}
return currentChild;
}
protected void VisitAndIdentOnlyWithMoreChilds(AstNode node)
{
if(node == null)
return;
if(node is ChildrenNode)
{
var children = ( (ChildrenNode)node );
if(children.Count > 1)
VisitAndIdentAlways(node);
else
foreach(var child in children)
node = child;
}
Visit(node);
}
protected void VisitAndIdentAlways(AstNode node)
{
VisitAndIdentAlways(node, false);
}
protected void VisitAndIdentAlways(AstNode node, bool codeblockcaller)
{
if (node == null)
return;
if (!codeblockcaller)
WriteText(System.Environment.NewLine);
if (node is ChildrenNode)
foreach (var childrenNode in (ChildrenNode)node)
{
if (!(childrenNode is CodeBlockNode) && !(childrenNode is MetaNode))
{
WriteIndent();
}
Visit(childrenNode);
if (!(childrenNode is CodeBlockNode) && !(childrenNode is MetaNode))
{
WriteText(System.Environment.NewLine);
}
}
else
{
if (!codeblockcaller)
{
WriteIndent();
}
Visit(node);
if (!codeblockcaller)
{
WriteText(System.Environment.NewLine);
}
}
}