All Superinterfaces:

org.antlr.v4.runtime.tree.ParseTreeListener

All Known Implementing Classes:

BNFBaseListener, BNFListener
```
public interface BNFListener
extends org.antlr.v4.runtime.tree.ParseTreeListener
```
This interface defines a complete listener for a parse tree produced by BNFParser.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`enterAlternative(BNFParser.AlternativeContext ctx)`	Enter a parse tree produced by `BNFParser.alternative()`.
`void`	`enterAlternatives(BNFParser.AlternativesContext ctx)`	Enter a parse tree produced by `BNFParser.alternatives()`.
`void`	`enterBnfsymbol(BNFParser.BnfsymbolContext ctx)`	Enter a parse tree produced by `BNFParser.bnfsymbol()`.
`void`	`enterBnfsymbols(BNFParser.BnfsymbolsContext ctx)`	Enter a parse tree produced by `BNFParser.bnfsymbols()`.
`void`	`enterCharacterset(BNFParser.CharactersetContext ctx)`	Enter a parse tree produced by `BNFParser.characterset()`.
`void`	`enterDescription(BNFParser.DescriptionContext ctx)`	Enter a parse tree produced by `BNFParser.description()`.
`void`	`enterDescriptionLine(BNFParser.DescriptionLineContext ctx)`	Enter a parse tree produced by `BNFParser.descriptionLine()`.
`void`	`enterElement(BNFParser.ElementContext ctx)`	Enter a parse tree produced by `BNFParser.element()`.
`void`	`enterExclusioncharacterset(BNFParser.ExclusioncharactersetContext ctx)`	Enter a parse tree produced by `BNFParser.exclusioncharacterset()`.
`void`	`enterHeader(BNFParser.HeaderContext ctx)`	Enter a parse tree produced by `BNFParser.header()`.
`void`	`enterId(BNFParser.IdContext ctx)`	Enter a parse tree produced by `BNFParser.id()`.
`void`	`enterLhs(BNFParser.LhsContext ctx)`	Enter a parse tree produced by `BNFParser.lhs()`.
`void`	`enterListcharacterset(BNFParser.ListcharactersetContext ctx)`	Enter a parse tree produced by `BNFParser.listcharacterset()`.
`void`	`enterNamedcharacterset(BNFParser.NamedcharactersetContext ctx)`	Enter a parse tree produced by `BNFParser.namedcharacterset()`.
`void`	`enterNormaltext(BNFParser.NormaltextContext ctx)`	Enter a parse tree produced by `BNFParser.normaltext()`.
`void`	`enterOptionalitem(BNFParser.OptionalitemContext ctx)`	Enter a parse tree produced by `BNFParser.optionalitem()`.
`void`	`enterRequireditem(BNFParser.RequireditemContext ctx)`	Enter a parse tree produced by `BNFParser.requireditem()`.
`void`	`enterRhs(BNFParser.RhsContext ctx)`	Enter a parse tree produced by `BNFParser.rhs()`.
`void`	`enterRule_(BNFParser.Rule_Context ctx)`	Enter a parse tree produced by `BNFParser.rule_()`.
`void`	`enterRuleid(BNFParser.RuleidContext ctx)`	Enter a parse tree produced by `BNFParser.ruleid()`.
`void`	`enterRulelist(BNFParser.RulelistContext ctx)`	Enter a parse tree produced by `BNFParser.rulelist()`.
`void`	`enterRuleref(BNFParser.RulerefContext ctx)`	Enter a parse tree produced by `BNFParser.ruleref()`.
`void`	`enterText(BNFParser.TextContext ctx)`	Enter a parse tree produced by `BNFParser.text()`.
`void`	`exitAlternative(BNFParser.AlternativeContext ctx)`	Exit a parse tree produced by `BNFParser.alternative()`.
`void`	`exitAlternatives(BNFParser.AlternativesContext ctx)`	Exit a parse tree produced by `BNFParser.alternatives()`.
`void`	`exitBnfsymbol(BNFParser.BnfsymbolContext ctx)`	Exit a parse tree produced by `BNFParser.bnfsymbol()`.
`void`	`exitBnfsymbols(BNFParser.BnfsymbolsContext ctx)`	Exit a parse tree produced by `BNFParser.bnfsymbols()`.
`void`	`exitCharacterset(BNFParser.CharactersetContext ctx)`	Exit a parse tree produced by `BNFParser.characterset()`.
`void`	`exitDescription(BNFParser.DescriptionContext ctx)`	Exit a parse tree produced by `BNFParser.description()`.
`void`	`exitDescriptionLine(BNFParser.DescriptionLineContext ctx)`	Exit a parse tree produced by `BNFParser.descriptionLine()`.
`void`	`exitElement(BNFParser.ElementContext ctx)`	Exit a parse tree produced by `BNFParser.element()`.
`void`	`exitExclusioncharacterset(BNFParser.ExclusioncharactersetContext ctx)`	Exit a parse tree produced by `BNFParser.exclusioncharacterset()`.
`void`	`exitHeader(BNFParser.HeaderContext ctx)`	Exit a parse tree produced by `BNFParser.header()`.
`void`	`exitId(BNFParser.IdContext ctx)`	Exit a parse tree produced by `BNFParser.id()`.
`void`	`exitLhs(BNFParser.LhsContext ctx)`	Exit a parse tree produced by `BNFParser.lhs()`.
`void`	`exitListcharacterset(BNFParser.ListcharactersetContext ctx)`	Exit a parse tree produced by `BNFParser.listcharacterset()`.
`void`	`exitNamedcharacterset(BNFParser.NamedcharactersetContext ctx)`	Exit a parse tree produced by `BNFParser.namedcharacterset()`.
`void`	`exitNormaltext(BNFParser.NormaltextContext ctx)`	Exit a parse tree produced by `BNFParser.normaltext()`.
`void`	`exitOptionalitem(BNFParser.OptionalitemContext ctx)`	Exit a parse tree produced by `BNFParser.optionalitem()`.
`void`	`exitRequireditem(BNFParser.RequireditemContext ctx)`	Exit a parse tree produced by `BNFParser.requireditem()`.
`void`	`exitRhs(BNFParser.RhsContext ctx)`	Exit a parse tree produced by `BNFParser.rhs()`.
`void`	`exitRule_(BNFParser.Rule_Context ctx)`	Exit a parse tree produced by `BNFParser.rule_()`.
`void`	`exitRuleid(BNFParser.RuleidContext ctx)`	Exit a parse tree produced by `BNFParser.ruleid()`.
`void`	`exitRulelist(BNFParser.RulelistContext ctx)`	Exit a parse tree produced by `BNFParser.rulelist()`.
`void`	`exitRuleref(BNFParser.RulerefContext ctx)`	Exit a parse tree produced by `BNFParser.ruleref()`.
`void`	`exitText(BNFParser.TextContext ctx)`	Exit a parse tree produced by `BNFParser.text()`.

Methods inherited from interface org.antlr.v4.runtime.tree.ParseTreeListener
enterEveryRule, exitEveryRule, visitErrorNode, visitTerminal

- Method Detail
  - enterRulelist
```
void enterRulelist(BNFParser.RulelistContext ctx)
```
    Enter a parse tree produced by BNFParser.rulelist().
    
    Parameters:
    
    ctx - the parse tree
  - exitRulelist
```
void exitRulelist(BNFParser.RulelistContext ctx)
```
    Exit a parse tree produced by BNFParser.rulelist().
    
    Parameters:
    
    ctx - the parse tree
  - enterHeader
```
void enterHeader(BNFParser.HeaderContext ctx)
```
    Enter a parse tree produced by BNFParser.header().
    
    Parameters:
    
    ctx - the parse tree
  - exitHeader
```
void exitHeader(BNFParser.HeaderContext ctx)
```
    Exit a parse tree produced by BNFParser.header().
    
    Parameters:
    
    ctx - the parse tree
  - enterDescription
```
void enterDescription(BNFParser.DescriptionContext ctx)
```
    Enter a parse tree produced by BNFParser.description().
    
    Parameters:
    
    ctx - the parse tree
  - exitDescription
```
void exitDescription(BNFParser.DescriptionContext ctx)
```
    Exit a parse tree produced by BNFParser.description().
    
    Parameters:
    
    ctx - the parse tree
  - enterDescriptionLine
```
void enterDescriptionLine(BNFParser.DescriptionLineContext ctx)
```
    Enter a parse tree produced by BNFParser.descriptionLine().
    
    Parameters:
    
    ctx - the parse tree
  - exitDescriptionLine
```
void exitDescriptionLine(BNFParser.DescriptionLineContext ctx)
```
    Exit a parse tree produced by BNFParser.descriptionLine().
    
    Parameters:
    
    ctx - the parse tree
  - enterRule_
```
void enterRule_(BNFParser.Rule_Context ctx)
```
    Enter a parse tree produced by BNFParser.rule_().
    
    Parameters:
    
    ctx - the parse tree
  - exitRule_
```
void exitRule_(BNFParser.Rule_Context ctx)
```
    Exit a parse tree produced by BNFParser.rule_().
    
    Parameters:
    
    ctx - the parse tree
  - enterLhs
```
void enterLhs(BNFParser.LhsContext ctx)
```
    Enter a parse tree produced by BNFParser.lhs().
    
    Parameters:
    
    ctx - the parse tree
  - exitLhs
```
void exitLhs(BNFParser.LhsContext ctx)
```
    Exit a parse tree produced by BNFParser.lhs().
    
    Parameters:
    
    ctx - the parse tree
  - enterRhs
```
void enterRhs(BNFParser.RhsContext ctx)
```
    Enter a parse tree produced by BNFParser.rhs().
    
    Parameters:
    
    ctx - the parse tree
  - exitRhs
```
void exitRhs(BNFParser.RhsContext ctx)
```
    Exit a parse tree produced by BNFParser.rhs().
    
    Parameters:
    
    ctx - the parse tree
  - enterBnfsymbols
```
void enterBnfsymbols(BNFParser.BnfsymbolsContext ctx)
```
    Enter a parse tree produced by BNFParser.bnfsymbols().
    
    Parameters:
    
    ctx - the parse tree
  - exitBnfsymbols
```
void exitBnfsymbols(BNFParser.BnfsymbolsContext ctx)
```
    Exit a parse tree produced by BNFParser.bnfsymbols().
    
    Parameters:
    
    ctx - the parse tree
  - enterAlternatives
```
void enterAlternatives(BNFParser.AlternativesContext ctx)
```
    Enter a parse tree produced by BNFParser.alternatives().
    
    Parameters:
    
    ctx - the parse tree
  - exitAlternatives
```
void exitAlternatives(BNFParser.AlternativesContext ctx)
```
    Exit a parse tree produced by BNFParser.alternatives().
    
    Parameters:
    
    ctx - the parse tree
  - enterAlternative
```
void enterAlternative(BNFParser.AlternativeContext ctx)
```
    Enter a parse tree produced by BNFParser.alternative().
    
    Parameters:
    
    ctx - the parse tree
  - exitAlternative
```
void exitAlternative(BNFParser.AlternativeContext ctx)
```
    Exit a parse tree produced by BNFParser.alternative().
    
    Parameters:
    
    ctx - the parse tree
  - enterElement
```
void enterElement(BNFParser.ElementContext ctx)
```
    Enter a parse tree produced by BNFParser.element().
    
    Parameters:
    
    ctx - the parse tree
  - exitElement
```
void exitElement(BNFParser.ElementContext ctx)
```
    Exit a parse tree produced by BNFParser.element().
    
    Parameters:
    
    ctx - the parse tree
  - enterOptionalitem
```
void enterOptionalitem(BNFParser.OptionalitemContext ctx)
```
    Enter a parse tree produced by BNFParser.optionalitem().
    
    Parameters:
    
    ctx - the parse tree
  - exitOptionalitem
```
void exitOptionalitem(BNFParser.OptionalitemContext ctx)
```
    Exit a parse tree produced by BNFParser.optionalitem().
    
    Parameters:
    
    ctx - the parse tree
  - enterRequireditem
```
void enterRequireditem(BNFParser.RequireditemContext ctx)
```
    Enter a parse tree produced by BNFParser.requireditem().
    
    Parameters:
    
    ctx - the parse tree
  - exitRequireditem
```
void exitRequireditem(BNFParser.RequireditemContext ctx)
```
    Exit a parse tree produced by BNFParser.requireditem().
    
    Parameters:
    
    ctx - the parse tree
  - enterText
```
void enterText(BNFParser.TextContext ctx)
```
    Enter a parse tree produced by BNFParser.text().
    
    Parameters:
    
    ctx - the parse tree
  - exitText
```
void exitText(BNFParser.TextContext ctx)
```
    Exit a parse tree produced by BNFParser.text().
    
    Parameters:
    
    ctx - the parse tree
  - enterId
```
void enterId(BNFParser.IdContext ctx)
```
    Enter a parse tree produced by BNFParser.id().
    
    Parameters:
    
    ctx - the parse tree
  - exitId
```
void exitId(BNFParser.IdContext ctx)
```
    Exit a parse tree produced by BNFParser.id().
    
    Parameters:
    
    ctx - the parse tree
  - enterCharacterset
```
void enterCharacterset(BNFParser.CharactersetContext ctx)
```
    Enter a parse tree produced by BNFParser.characterset().
    
    Parameters:
    
    ctx - the parse tree
  - exitCharacterset
```
void exitCharacterset(BNFParser.CharactersetContext ctx)
```
    Exit a parse tree produced by BNFParser.characterset().
    
    Parameters:
    
    ctx - the parse tree
  - enterNormaltext
```
void enterNormaltext(BNFParser.NormaltextContext ctx)
```
    Enter a parse tree produced by BNFParser.normaltext().
    
    Parameters:
    
    ctx - the parse tree
  - exitNormaltext
```
void exitNormaltext(BNFParser.NormaltextContext ctx)
```
    Exit a parse tree produced by BNFParser.normaltext().
    
    Parameters:
    
    ctx - the parse tree
  - enterNamedcharacterset
```
void enterNamedcharacterset(BNFParser.NamedcharactersetContext ctx)
```
    Enter a parse tree produced by BNFParser.namedcharacterset().
    
    Parameters:
    
    ctx - the parse tree
  - exitNamedcharacterset
```
void exitNamedcharacterset(BNFParser.NamedcharactersetContext ctx)
```
    Exit a parse tree produced by BNFParser.namedcharacterset().
    
    Parameters:
    
    ctx - the parse tree
  - enterExclusioncharacterset
```
void enterExclusioncharacterset(BNFParser.ExclusioncharactersetContext ctx)
```
    Enter a parse tree produced by BNFParser.exclusioncharacterset().
    
    Parameters:
    
    ctx - the parse tree
  - exitExclusioncharacterset
```
void exitExclusioncharacterset(BNFParser.ExclusioncharactersetContext ctx)
```
    Exit a parse tree produced by BNFParser.exclusioncharacterset().
    
    Parameters:
    
    ctx - the parse tree
  - enterListcharacterset
```
void enterListcharacterset(BNFParser.ListcharactersetContext ctx)
```
    Enter a parse tree produced by BNFParser.listcharacterset().
    
    Parameters:
    
    ctx - the parse tree
  - exitListcharacterset
```
void exitListcharacterset(BNFParser.ListcharactersetContext ctx)
```
    Exit a parse tree produced by BNFParser.listcharacterset().
    
    Parameters:
    
    ctx - the parse tree
  - enterRuleref
```
void enterRuleref(BNFParser.RulerefContext ctx)
```
    Enter a parse tree produced by BNFParser.ruleref().
    
    Parameters:
    
    ctx - the parse tree
  - exitRuleref
```
void exitRuleref(BNFParser.RulerefContext ctx)
```
    Exit a parse tree produced by BNFParser.ruleref().
    
    Parameters:
    
    ctx - the parse tree
  - enterRuleid
```
void enterRuleid(BNFParser.RuleidContext ctx)
```
    Enter a parse tree produced by BNFParser.ruleid().
    
    Parameters:
    
    ctx - the parse tree
  - exitRuleid
```
void exitRuleid(BNFParser.RuleidContext ctx)
```
    Exit a parse tree produced by BNFParser.ruleid().
    
    Parameters:
    
    ctx - the parse tree
  - enterBnfsymbol
```
void enterBnfsymbol(BNFParser.BnfsymbolContext ctx)
```
    Enter a parse tree produced by BNFParser.bnfsymbol().
    
    Parameters:
    
    ctx - the parse tree
  - exitBnfsymbol
```
void exitBnfsymbol(BNFParser.BnfsymbolContext ctx)
```
    Exit a parse tree produced by BNFParser.bnfsymbol().
    
    Parameters:
    
    ctx - the parse tree

Interface BNFListener

Method Summary

Methods inherited from interface org.antlr.v4.runtime.tree.ParseTreeListener

Method Detail

enterRulelist

exitRulelist

enterHeader

exitHeader

enterDescription

exitDescription

enterDescriptionLine

exitDescriptionLine

enterRule_

exitRule_

enterLhs

exitLhs

enterRhs

exitRhs

enterBnfsymbols

exitBnfsymbols

enterAlternatives

exitAlternatives

enterAlternative

exitAlternative

enterElement

exitElement

enterOptionalitem

exitOptionalitem

enterRequireditem

exitRequireditem

enterText

exitText

enterId

exitId

enterCharacterset

exitCharacterset

enterNormaltext

exitNormaltext

enterNamedcharacterset

exitNamedcharacterset

enterExclusioncharacterset

exitExclusioncharacterset

enterListcharacterset

exitListcharacterset

enterRuleref

exitRuleref

enterRuleid

exitRuleid

enterBnfsymbol

exitBnfsymbol