NodeVisitor<TBaseNode, TNode, TResult> Class ​
Definition ​
A Visitor<TNode, TResult> that only visits nodes of a specific type and does not take a context object. Visiting a node of any other type calls VisitUnhandledNode(TBaseNode), which throws by default. Typed visitors are usually combined in a CompositeVisitor<TBaseNode, TResult>, which dispatches each node to the visitor for its type.
c#
public abstract class NodeVisitor<TBaseNode, TNode, TResult> : Visitor<TBaseNode, TResult>
where TBaseNode : Node<TBaseNode>
where TNode : TBaseNodeType Parameters ​
| Name | Description |
|---|---|
TBaseNode | The base type of all nodes in the tree. |
TNode | The type of the nodes to visit. |
TResult | The type of the result of visiting a node. |
Constructors ​
| Name | Description |
|---|---|
NodeVisitor() |
Methods ​
| Name | Description |
|---|---|
VisitNode(TBaseNode) | Called to visit a node. |
VisitNode(TNode) | Called to visit a node of type TNode. |
VisitUnhandledNode(TBaseNode) | Called to visit a node that is not of type TNode. Throws an InvalidOperationException by default; override to return a fallback value instead. |