Visitor<TContext, TNode, TResult> Class
Definition
A visitor for a syntax tree. A visitor is called for a node and returns a value for it. Unlike a Listener<TContext, TNode>, which walks the whole tree itself, a visitor controls the walk: it visits whichever children it needs, in whatever order it needs, and combines their results into its own. That makes visitors the natural fit for evaluating or transforming a tree into a value, especially when not every child should be visited, e.g. short-circuit evaluation.
public abstract class Visitor<TContext, TNode, TResult>
where TNode : Node<TNode>
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Type Parameters
| Name |
Description |
TContext |
The type of the context object. |
TNode |
The type of the nodes to visit. |
TResult |
The type of the result of visiting a node. |
Constructors
Methods