Package org.antlr.v4.runtime.tree

Class ParseTreeWalker

java.lang.Object

org.antlr.v4.runtime.tree.ParseTreeWalker

Direct Known Subclasses:

IterativeParseTreeWalker

public class ParseTreeWalker
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field	Description
static ParseTreeWalker	DEFAULT

Constructor Summary

Constructors

Constructor	Description
ParseTreeWalker()

Method Summary

Modifier and Type	Method	Description
protected void	enterRule(ParseTreeListener listener, RuleNode r)	The discovery of a rule node, involves sending two events: the generic ParseTreeListener.enterEveryRule(org.antlr.v4.runtime.ParserRuleContext) and a RuleContext-specific event.
protected void	exitRule(ParseTreeListener listener, RuleNode r)
void	walk(ParseTreeListener listener, ParseTree t)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT

public static final ParseTreeWalker DEFAULT

Constructor Detail

ParseTreeWalker

public ParseTreeWalker()

Method Detail

walk

public void walk(ParseTreeListener listener,
                 ParseTree t)

enterRule

protected void enterRule(ParseTreeListener listener,
                         RuleNode r)

The discovery of a rule node, involves sending two events: the generic ParseTreeListener.enterEveryRule(org.antlr.v4.runtime.ParserRuleContext) and a RuleContext-specific event. First we trigger the generic and then the rule specific. We to them in reverse order upon finishing the node.

exitRule

protected void exitRule(ParseTreeListener listener,
                        RuleNode r)