io.debezium.antlr

Class ProxyParseTreeListenerUtil

java.lang.Object

io.debezium.antlr.ProxyParseTreeListenerUtil

public class ProxyParseTreeListenerUtil
extends Object

Utility class that implements a helper method for achieving a delegation of parsed rules to multiple listeners. For example implementation of proxy parse tree listener see ANTLR issue about it.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ProxyParseTreeListenerUtil()

Method Summary

Modifier and Type	Method and Description
static void	delegateEnterRule(org.antlr.v4.runtime.ParserRuleContext ctx, Collection<org.antlr.v4.runtime.tree.ParseTreeListener> listeners, Collection<ParsingException> errors) Delegates enter rule event to collection of parsing listeners and captures parsing exceptions that may appear.
static void	delegateExitRule(org.antlr.v4.runtime.ParserRuleContext ctx, Collection<org.antlr.v4.runtime.tree.ParseTreeListener> listeners, Collection<ParsingException> errors) Delegates exit rule event to collection of parsing listeners and captures parsing exceptions that may appear.
static void	visitErrorNode(org.antlr.v4.runtime.tree.ErrorNode node, Collection<org.antlr.v4.runtime.tree.ParseTreeListener> listeners, Collection<ParsingException> errors) Delegates visit error node event to collection of parsing listeners and captures parsing exceptions that may appear.
static void	visitTerminal(org.antlr.v4.runtime.tree.TerminalNode node, Collection<org.antlr.v4.runtime.tree.ParseTreeListener> listeners, Collection<ParsingException> errors) Delegates visit terminal event to collection of parsing listeners and captures parsing exceptions that may appear.

Methods inherited from class java.lang.Object

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

Constructor Detail

ProxyParseTreeListenerUtil

private ProxyParseTreeListenerUtil()

Method Detail

delegateEnterRule

public static void delegateEnterRule(org.antlr.v4.runtime.ParserRuleContext ctx,
                                     Collection<org.antlr.v4.runtime.tree.ParseTreeListener> listeners,
                                     Collection<ParsingException> errors)

Delegates enter rule event to collection of parsing listeners and captures parsing exceptions that may appear.

Parameters:

ctx - enter rule context; may not be null

listeners - collection of listeners; may not be null

errors - collection of errors; may not be null

delegateExitRule

public static void delegateExitRule(org.antlr.v4.runtime.ParserRuleContext ctx,
                                    Collection<org.antlr.v4.runtime.tree.ParseTreeListener> listeners,
                                    Collection<ParsingException> errors)

Delegates exit rule event to collection of parsing listeners and captures parsing exceptions that may appear.

Parameters:

ctx - exit rule context; may not be null

listeners - collection of listeners; may not be null

errors - collection of errors; may not be null

visitErrorNode

public static void visitErrorNode(org.antlr.v4.runtime.tree.ErrorNode node,
                                  Collection<org.antlr.v4.runtime.tree.ParseTreeListener> listeners,
                                  Collection<ParsingException> errors)

Delegates visit error node event to collection of parsing listeners and captures parsing exceptions that may appear.

Parameters:

node - error node; may not be null

listeners - collection of listeners; may not be null

errors - collection of errors; may not be null

visitTerminal

public static void visitTerminal(org.antlr.v4.runtime.tree.TerminalNode node,
                                 Collection<org.antlr.v4.runtime.tree.ParseTreeListener> listeners,
                                 Collection<ParsingException> errors)

Delegates visit terminal event to collection of parsing listeners and captures parsing exceptions that may appear.

Parameters:

node - terminal node; may not be null

listeners - collection of listeners; may not be null

errors - collection of errors; may not be null