org.thewonderlemming.c4plantuml.grammars

Interface C4L2ParserListenerDecorator

All Superinterfaces:

org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener, org.antlr.v4.runtime.tree.ParseTreeListener

All Known Implementing Classes:

AliasesShouldBeListedInDictionaryListener, AliasesShouldBeUniqueListener, AliasesShouldFollowStandardConventionListener, C4BaseListener, C4GraphParseTreeListener, C4L2GraphParseTreeListener, NoDuplicateRelationshipsListener, NoOrphanAliasInBoundariesListener, NoOrphanAliasInLayoutsListener, NoOrphanAliasInRelationshipsListener

public interface C4L2ParserListenerDecorator
extends org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

A decorator pattern to C4L2ParserListener using default methods to emulate multiple inheritance amongst classes and allow simple composition of grammars parsers.

All the default implementations delegates the work to the decorated object.

Author:

thewonderlemming

Method Summary

Modifier and Type	Method and Description
default void	enterBoundary(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.BoundaryContext ctx) Enter a parse tree produced by C4L2Parser.boundary().
default void	enterCloud(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.CloudContext ctx) Enter a parse tree produced by C4L2Parser.cloud().
default void	enterComma(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.CommaContext ctx) Enter a parse tree produced by C4L2Parser.comma().
default void	enterContainer(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.ContainerContext ctx) Enter a parse tree produced by C4L2Parser.container().
default void	enterDiagram(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.DiagramContext ctx) Enter a parse tree produced by C4L2Parser.diagram().
default void	enterEnterprise_boundary(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.Enterprise_boundaryContext ctx) Enter a parse tree produced by C4L2Parser.enterprise_boundary().
default void	enterFooter(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.FooterContext ctx) Enter a parse tree produced by C4L2Parser.footer().
default void	enterInclude(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.IncludeContext ctx) Enter a parse tree produced by C4L2Parser.include().
default void	enterL2_title(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.L2_titleContext ctx) Enter a parse tree produced by C4L2Parser.l2_title().
default void	enterLayout(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.LayoutContext ctx) Enter a parse tree produced by C4L2Parser.layout().
default void	enterPerson_ext(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.Person_extContext ctx) Enter a parse tree produced by C4L2Parser.person_ext().
default void	enterPerson(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.PersonContext ctx) Enter a parse tree produced by C4L2Parser.person().
default void	enterRelationship(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.RelationshipContext ctx) Enter a parse tree produced by C4L2Parser.relationship().
default void	enterStatement(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.StatementContext ctx) Enter a parse tree produced by C4L2Parser.statement().
default void	enterSystem_boundary(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.System_boundaryContext ctx) Enter a parse tree produced by C4L2Parser.system_boundary().
default void	enterSystem_ext(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.System_extContext ctx) Enter a parse tree produced by C4L2Parser.system_ext().
default void	enterSystem(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.SystemContext ctx) Enter a parse tree produced by C4L2Parser.system().
default void	enterTitle(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.TitleContext ctx) Enter a parse tree produced by C4L2Parser.title().
default void	exitBoundary(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.BoundaryContext ctx) Exit a parse tree produced by C4L2Parser.boundary().
default void	exitCloud(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.CloudContext ctx) Exit a parse tree produced by C4L2Parser.cloud().
default void	exitComma(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.CommaContext ctx) Exit a parse tree produced by C4L2Parser.comma().
default void	exitContainer(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.ContainerContext ctx) Exit a parse tree produced by C4L2Parser.container().
default void	exitDiagram(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.DiagramContext ctx) Exit a parse tree produced by C4L2Parser.diagram().
default void	exitEnterprise_boundary(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.Enterprise_boundaryContext ctx) Exit a parse tree produced by C4L2Parser.enterprise_boundary().
default void	exitFooter(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.FooterContext ctx) Exit a parse tree produced by C4L2Parser.footer().
default void	exitInclude(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.IncludeContext ctx) Exit a parse tree produced by C4L2Parser.include().
default void	exitL2_title(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.L2_titleContext ctx) Exit a parse tree produced by C4L2Parser.l2_title().
default void	exitLayout(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.LayoutContext ctx) Exit a parse tree produced by C4L2Parser.layout().
default void	exitPerson_ext(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.Person_extContext ctx) Exit a parse tree produced by C4L2Parser.person_ext().
default void	exitPerson(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.PersonContext ctx) Exit a parse tree produced by C4L2Parser.person().
default void	exitRelationship(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.RelationshipContext ctx) Exit a parse tree produced by C4L2Parser.relationship().
default void	exitStatement(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.StatementContext ctx) Exit a parse tree produced by C4L2Parser.statement().
default void	exitSystem_boundary(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.System_boundaryContext ctx) Exit a parse tree produced by C4L2Parser.system_boundary().
default void	exitSystem_ext(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.System_extContext ctx) Exit a parse tree produced by C4L2Parser.system_ext().
default void	exitSystem(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.SystemContext ctx) Exit a parse tree produced by C4L2Parser.system().
default void	exitTitle(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.TitleContext ctx) Exit a parse tree produced by C4L2Parser.title().
org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener	getDecoratedC4L2ParserListener() returns the instance of the C4L2ParserListener being decorated.

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

enterEveryRule, exitEveryRule, visitErrorNode, visitTerminal

Method Detail

enterBoundary

default void enterBoundary(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.BoundaryContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.boundary().

Specified by:

enterBoundary in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterCloud

default void enterCloud(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.CloudContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.cloud().

Specified by:

enterCloud in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterComma

default void enterComma(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.CommaContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.comma().

Specified by:

enterComma in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterContainer

default void enterContainer(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.ContainerContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.container().

Specified by:

enterContainer in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterDiagram

default void enterDiagram(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.DiagramContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.diagram().

Specified by:

enterDiagram in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterEnterprise_boundary

default void enterEnterprise_boundary(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.Enterprise_boundaryContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.enterprise_boundary().

Specified by:

enterEnterprise_boundary in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterFooter

default void enterFooter(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.FooterContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.footer().

Specified by:

enterFooter in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterInclude

default void enterInclude(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.IncludeContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.include().

Specified by:

enterInclude in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterL2_title

default void enterL2_title(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.L2_titleContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.l2_title().

Specified by:

enterL2_title in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterLayout

default void enterLayout(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.LayoutContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.layout().

Specified by:

enterLayout in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterPerson

default void enterPerson(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.PersonContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.person().

Specified by:

enterPerson in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterPerson_ext

default void enterPerson_ext(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.Person_extContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.person_ext().

Specified by:

enterPerson_ext in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterRelationship

default void enterRelationship(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.RelationshipContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.relationship().

Specified by:

enterRelationship in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterStatement

default void enterStatement(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.StatementContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.statement().

Specified by:

enterStatement in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterSystem

default void enterSystem(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.SystemContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.system().

Specified by:

enterSystem in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterSystem_boundary

default void enterSystem_boundary(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.System_boundaryContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.system_boundary().

Specified by:

enterSystem_boundary in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterSystem_ext

default void enterSystem_ext(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.System_extContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.system_ext().

Specified by:

enterSystem_ext in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

enterTitle

default void enterTitle(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.TitleContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Enter a parse tree produced by C4L2Parser.title().

Specified by:

enterTitle in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitBoundary

default void exitBoundary(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.BoundaryContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.boundary().

Specified by:

exitBoundary in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitCloud

default void exitCloud(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.CloudContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.cloud().

Specified by:

exitCloud in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitComma

default void exitComma(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.CommaContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.comma().

Specified by:

exitComma in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitContainer

default void exitContainer(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.ContainerContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.container().

Specified by:

exitContainer in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitDiagram

default void exitDiagram(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.DiagramContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.diagram().

Specified by:

exitDiagram in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitEnterprise_boundary

default void exitEnterprise_boundary(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.Enterprise_boundaryContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.enterprise_boundary().

Specified by:

exitEnterprise_boundary in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitFooter

default void exitFooter(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.FooterContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.footer().

Specified by:

exitFooter in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitInclude

default void exitInclude(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.IncludeContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.include().

Specified by:

exitInclude in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitL2_title

default void exitL2_title(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.L2_titleContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.l2_title().

Specified by:

exitL2_title in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitLayout

default void exitLayout(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.LayoutContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.layout().

Specified by:

exitLayout in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitPerson

default void exitPerson(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.PersonContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.person().

Specified by:

exitPerson in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitPerson_ext

default void exitPerson_ext(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.Person_extContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.person_ext().

Specified by:

exitPerson_ext in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitRelationship

default void exitRelationship(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.RelationshipContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.relationship().

Specified by:

exitRelationship in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitStatement

default void exitStatement(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.StatementContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.statement().

Specified by:

exitStatement in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitSystem

default void exitSystem(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.SystemContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.system().

Specified by:

exitSystem in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitSystem_boundary

default void exitSystem_boundary(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.System_boundaryContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.system_boundary().

Specified by:

exitSystem_boundary in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitSystem_ext

default void exitSystem_ext(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.System_extContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.system_ext().

Specified by:

exitSystem_ext in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

exitTitle

default void exitTitle(org.thewonderlemming.c4plantuml.grammars.generated.C4L2Parser.TitleContext ctx)

Description copied from interface: org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Exit a parse tree produced by C4L2Parser.title().

Specified by:

exitTitle in interface org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener

Parameters:

ctx - the parse tree

getDecoratedC4L2ParserListener

org.thewonderlemming.c4plantuml.grammars.generated.C4L2ParserListener getDecoratedC4L2ParserListener()

returns the instance of the C4L2ParserListener being decorated.

Returns:

the decorated C4L2ParserListener.