antlr - ANTLR4 - Access token group in a sequence using context -

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i have grammar includes rule:

expr:       unaryexpr '(' (stat | expr | constant) ')'                                        #labelunaryexpr     | binaryexpr '(' (stat | expr | constant) ',' (stat | expr | constant) ')'          #labelbinaryexpr     | multipleexpr '(' (stat | expr | constant) (',' (stat | expr | constant))+ ')'     #labelmultipleexpr     ;

for expr, can access value of unaryexpr calling ctx.unarystat(). how can access (stat | expr | constant) similarly? there solution doesn't require modifying grammar adding rule group?

since you've labelled alternatives, can access (stat | expr | constant) in respective listener/visitor method:

@override public void enterlabelunaryexpr(@notnull exprparser.labelunaryexprcontext ctx) {    // 1 of these return other null   system.out.println(ctx.stat());   system.out.println(ctx.expr());   system.out.println(ctx.constant()); }

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