Package org.antlr.v4.runtime.tree
Class ParseTreeWalker
- java.lang.Object
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- org.antlr.v4.runtime.tree.ParseTreeWalker
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- Direct Known Subclasses:
IterativeParseTreeWalker
public class ParseTreeWalker extends java.lang.Object
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Field Summary
Fields Modifier and Type Field Description static ParseTreeWalker
DEFAULT
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Constructor Summary
Constructors Constructor Description ParseTreeWalker()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected void
enterRule(ParseTreeListener listener, RuleNode r)
The discovery of a rule node, involves sending two events: the genericParseTreeListener.enterEveryRule(org.antlr.v4.runtime.ParserRuleContext)
and aRuleContext
-specific event.protected void
exitRule(ParseTreeListener listener, RuleNode r)
void
walk(ParseTreeListener listener, ParseTree t)
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Field Detail
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DEFAULT
public static final ParseTreeWalker DEFAULT
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Method Detail
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walk
public void walk(ParseTreeListener listener, ParseTree t)
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enterRule
protected void enterRule(ParseTreeListener listener, RuleNode r)
The discovery of a rule node, involves sending two events: the genericParseTreeListener.enterEveryRule(org.antlr.v4.runtime.ParserRuleContext)
and aRuleContext
-specific event. First we trigger the generic and then the rule specific. We to them in reverse order upon finishing the node.
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exitRule
protected void exitRule(ParseTreeListener listener, RuleNode r)
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