Package org.antlr.v4.runtime.tree

Interface ParseTreeVisitor<T>

Type Parameters:

T - The return type of the visit operation. Use Void for operations with no return type.

All Known Implementing Classes:

AbstractParseTreeVisitor

public interface ParseTreeVisitor<T>

This interface defines the basic notion of a parse tree visitor. Generated visitors implement this interface and the XVisitor interface for grammar X.

Method Summary

Modifier and Type	Method	Description
T	visit(ParseTree tree)	Visit a parse tree, and return a user-defined result of the operation.
T	visitChildren(RuleNode node)	Visit the children of a node, and return a user-defined result of the operation.
T	visitErrorNode(ErrorNode node)	Visit an error node, and return a user-defined result of the operation.
T	visitTerminal(TerminalNode node)	Visit a terminal node, and return a user-defined result of the operation.

Method Detail

visit

T visit(ParseTree tree)

Visit a parse tree, and return a user-defined result of the operation.

Parameters:

tree - The ParseTree to visit.

Returns:

The result of visiting the parse tree.

visitChildren

T visitChildren(RuleNode node)

Visit the children of a node, and return a user-defined result of the operation.

Parameters:

node - The RuleNode whose children should be visited.

Returns:

The result of visiting the children of the node.

visitTerminal

T visitTerminal(TerminalNode node)

Visit a terminal node, and return a user-defined result of the operation.

Parameters:

node - The TerminalNode to visit.

Returns:

The result of visiting the node.

visitErrorNode

T visitErrorNode(ErrorNode node)

Visit an error node, and return a user-defined result of the operation.

Parameters:

node - The ErrorNode to visit.

Returns:

The result of visiting the node.