org.antlr.v4.runtime.tree

Interface ParseTreeVisitor<Result>

Type Parameters:

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

All Known Implementing Classes:

AbstractParseTreeVisitor

public interface ParseTreeVisitor<Result>

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

Author:

Sam Harwell

Method Summary

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

Method Detail

visit

Result visit(@NotNull
             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

Result visitChildren(@NotNull
                     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

Result visitTerminal(@NotNull
                     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

Result visitErrorNode(@NotNull
                      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.