antlr4 issue https://github.com/antlr/antlr4/issues/3334

MultiAlternativesParser.js

// Generated from MultiAlternatives.g4 by ANTLR 4.9
// jshint ignore: start
import antlr4 from 'antlr4';
import MultiAlternativesListener from './MultiAlternativesListener.js';

const serializedATN = ["\u0003\u608b\ua72a\u8133\ub9ed\u417c\u3be7\u7786",
    "\u5964\u0003\u0007=\u0004\u0002\t\u0002\u0003\u0002\u0007\u0002\u0006",
    "\n\u0002\f\u0002\u000e\u0002\t\u000b\u0002\u0003\u0002\u0003\u0002\u0007",
    "\u0002\r\n\u0002\f\u0002\u000e\u0002\u0010\u000b\u0002\u0003\u0002\u0007",
    "\u0002\u0013\n\u0002\f\u0002\u000e\u0002\u0016\u000b\u0002\u0003\u0002",
    "\u0007\u0002\u0019\n\u0002\f\u0002\u000e\u0002\u001c\u000b\u0002\u0003",
    "\u0002\u0003\u0002\u0007\u0002 \n\u0002\f\u0002\u000e\u0002#\u000b\u0002",
    "\u0003\u0002\u0007\u0002&\n\u0002\f\u0002\u000e\u0002)\u000b\u0002\u0003",
    "\u0002\u0007\u0002,\n\u0002\f\u0002\u000e\u0002/\u000b\u0002\u0003\u0002",
    "\u0003\u0002\u0007\u00023\n\u0002\f\u0002\u000e\u00026\u000b\u0002\u0003",
    "\u0002\u0005\u00029\n\u0002\u0005\u0002;\n\u0002\u0003\u0002\u0002\u0002",
    "\u0003\u0002\u0002\u0002\u0002E\u0002\u0014\u0003\u0002\u0002\u0002",
    "\u0004\u0006\u0007\u0007\u0002\u0002\u0005\u0004\u0003\u0002\u0002\u0002",
    "\u0006\t\u0003\u0002\u0002\u0002\u0007\u0005\u0003\u0002\u0002\u0002",
    "\u0007\b\u0003\u0002\u0002\u0002\b\n\u0003\u0002\u0002\u0002\t\u0007",
    "\u0003\u0002\u0002\u0002\n\u000e\u0007\u0003\u0002\u0002\u000b\r\u0007",
    "\u0007\u0002\u0002\f\u000b\u0003\u0002\u0002\u0002\r\u0010\u0003\u0002",
    "\u0002\u0002\u000e\f\u0003\u0002\u0002\u0002\u000e\u000f\u0003\u0002",
    "\u0002\u0002\u000f\u0011\u0003\u0002\u0002\u0002\u0010\u000e\u0003\u0002",
    "\u0002\u0002\u0011\u0013\u0007\u0004\u0002\u0002\u0012\u0007\u0003\u0002",
    "\u0002\u0002\u0013\u0016\u0003\u0002\u0002\u0002\u0014\u0012\u0003\u0002",
    "\u0002\u0002\u0014\u0015\u0003\u0002\u0002\u0002\u0015\'\u0003\u0002",
    "\u0002\u0002\u0016\u0014\u0003\u0002\u0002\u0002\u0017\u0019\u0007\u0007",
    "\u0002\u0002\u0018\u0017\u0003\u0002\u0002\u0002\u0019\u001c\u0003\u0002",
    "\u0002\u0002\u001a\u0018\u0003\u0002\u0002\u0002\u001a\u001b\u0003\u0002",
    "\u0002\u0002\u001b\u001d\u0003\u0002\u0002\u0002\u001c\u001a\u0003\u0002",
    "\u0002\u0002\u001d!\u0007\u0005\u0002\u0002\u001e \u0007\u0007\u0002",
    "\u0002\u001f\u001e\u0003\u0002\u0002\u0002 #\u0003\u0002\u0002\u0002",
    "!\u001f\u0003\u0002\u0002\u0002!\"\u0003\u0002\u0002\u0002\"$\u0003",
    "\u0002\u0002\u0002#!\u0003\u0002\u0002\u0002$&\u0007\u0004\u0002\u0002",
    "%\u001a\u0003\u0002\u0002\u0002&)\u0003\u0002\u0002\u0002\'%\u0003\u0002",
    "\u0002\u0002\'(\u0003\u0002\u0002\u0002(:\u0003\u0002\u0002\u0002)\'",
    "\u0003\u0002\u0002\u0002*,\u0007\u0007\u0002\u0002+*\u0003\u0002\u0002",
    "\u0002,/\u0003\u0002\u0002\u0002-+\u0003\u0002\u0002\u0002-.\u0003\u0002",
    "\u0002\u0002.0\u0003\u0002\u0002\u0002/-\u0003\u0002\u0002\u000204\u0007",
    "\u0006\u0002\u000213\u0007\u0007\u0002\u000221\u0003\u0002\u0002\u0002",
    "36\u0003\u0002\u0002\u000242\u0003\u0002\u0002\u000245\u0003\u0002\u0002",
    "\u000258\u0003\u0002\u0002\u000264\u0003\u0002\u0002\u000279\u0007\u0004",
    "\u0002\u000287\u0003\u0002\u0002\u000289\u0003\u0002\u0002\u00029;\u0003",
    "\u0002\u0002\u0002:-\u0003\u0002\u0002\u0002:;\u0003\u0002\u0002\u0002",
    ";\u0003\u0003\u0002\u0002\u0002\f\u0007\u000e\u0014\u001a!\'-48:"].join("");


const atn = new antlr4.atn.ATNDeserializer().deserialize(serializedATN);

const decisionsToDFA = atn.decisionToState.map( (ds, index) => new antlr4.dfa.DFA(ds, index) );

const sharedContextCache = new antlr4.PredictionContextCache();

export default class MultiAlternativesParser extends antlr4.Parser {

    static grammarFileName = "MultiAlternatives.g4";
    static literalNames = [ null, "'A'", "','", "'B'", "'C'" ];
    static symbolicNames = [ null, null, null, null, null, "SP" ];
    static ruleNames = [ "main" ];

    constructor(input) {
        super(input);
        this._interp = new antlr4.atn.ParserATNSimulator(this, atn, decisionsToDFA, sharedContextCache);
        this.ruleNames = MultiAlternativesParser.ruleNames;
        this.literalNames = MultiAlternativesParser.literalNames;
        this.symbolicNames = MultiAlternativesParser.symbolicNames;
    }

    get atn() {
        return atn;
    }



	main() {
	    let localctx = new MainContext(this, this._ctx, this.state);
	    this.enterRule(localctx, 0, MultiAlternativesParser.RULE_main);
	    var _la = 0; // Token type
	    try {
	        this.enterOuterAlt(localctx, 1);
	        this.state = 18;
	        this._errHandler.sync(this);
	        let _alt = this._interp.adaptivePredict(this._input,2,this._ctx)
	        while(_alt!=2 && _alt!=antlr4.atn.ATN.INVALID_ALT_NUMBER) {
	            if(_alt===1) {
	                this.state = 5;
	                this._errHandler.sync(this);
	                _la = this._input.LA(1);
	                while(_la===MultiAlternativesParser.SP) {
	                    this.state = 2;
	                    this.match(MultiAlternativesParser.SP);
	                    this.state = 7;
	                    this._errHandler.sync(this);
	                    _la = this._input.LA(1);
	                }
	                this.state = 8;
	                this.match(MultiAlternativesParser.T__0);
	                this.state = 12;
	                this._errHandler.sync(this);
	                _la = this._input.LA(1);
	                while(_la===MultiAlternativesParser.SP) {
	                    this.state = 9;
	                    this.match(MultiAlternativesParser.SP);
	                    this.state = 14;
	                    this._errHandler.sync(this);
	                    _la = this._input.LA(1);
	                }
	                this.state = 15;
	                this.match(MultiAlternativesParser.T__1); 
	            }
	            this.state = 20;
	            this._errHandler.sync(this);
	            _alt = this._interp.adaptivePredict(this._input,2,this._ctx);
	        }

	        this.state = 37;
	        this._errHandler.sync(this);
	        let _alt = this._interp.adaptivePredict(this._input,5,this._ctx)
	        while(_alt!=2 && _alt!=antlr4.atn.ATN.INVALID_ALT_NUMBER) {
	            if(_alt===1) {
	                this.state = 24;
	                this._errHandler.sync(this);
	                _la = this._input.LA(1);
	                while(_la===MultiAlternativesParser.SP) {
	                    this.state = 21;
	                    this.match(MultiAlternativesParser.SP);
	                    this.state = 26;
	                    this._errHandler.sync(this);
	                    _la = this._input.LA(1);
	                }
	                this.state = 27;
	                this.match(MultiAlternativesParser.T__2);
	                this.state = 31;
	                this._errHandler.sync(this);
	                _la = this._input.LA(1);
	                while(_la===MultiAlternativesParser.SP) {
	                    this.state = 28;
	                    this.match(MultiAlternativesParser.SP);
	                    this.state = 33;
	                    this._errHandler.sync(this);
	                    _la = this._input.LA(1);
	                }
	                this.state = 34;
	                this.match(MultiAlternativesParser.T__1); 
	            }
	            this.state = 39;
	            this._errHandler.sync(this);
	            _alt = this._interp.adaptivePredict(this._input,5,this._ctx);
	        }

	        this.state = 56;
	        this._errHandler.sync(this);
	        _la = this._input.LA(1);
	        if(_la===MultiAlternativesParser.T__3 || _la===MultiAlternativesParser.SP) {
	            this.state = 43;
	            this._errHandler.sync(this);
	            _la = this._input.LA(1);
	            while(_la===MultiAlternativesParser.SP) {
	                this.state = 40;
	                this.match(MultiAlternativesParser.SP);
	                this.state = 45;
	                this._errHandler.sync(this);
	                _la = this._input.LA(1);
	            }
	            this.state = 46;
	            this.match(MultiAlternativesParser.T__3);
	            this.state = 50;
	            this._errHandler.sync(this);
	            _la = this._input.LA(1);
	            while(_la===MultiAlternativesParser.SP) {
	                this.state = 47;
	                this.match(MultiAlternativesParser.SP);
	                this.state = 52;
	                this._errHandler.sync(this);
	                _la = this._input.LA(1);
	            }
	            this.state = 54;
	            this._errHandler.sync(this);
	            _la = this._input.LA(1);
	            if(_la===MultiAlternativesParser.T__1) {
	                this.state = 53;
	                this.match(MultiAlternativesParser.T__1);
	            }

	        }

	    } catch (re) {
	    	if(re instanceof antlr4.error.RecognitionException) {
		        localctx.exception = re;
		        this._errHandler.reportError(this, re);
		        this._errHandler.recover(this, re);
		    } else {
		    	throw re;
		    }
	    } finally {
	        this.exitRule();
	    }
	    return localctx;
	}


}

MultiAlternativesParser.EOF = antlr4.Token.EOF;
MultiAlternativesParser.T__0 = 1;
MultiAlternativesParser.T__1 = 2;
MultiAlternativesParser.T__2 = 3;
MultiAlternativesParser.T__3 = 4;
MultiAlternativesParser.SP = 5;

MultiAlternativesParser.RULE_main = 0;

class MainContext extends antlr4.ParserRuleContext {

    constructor(parser, parent, invokingState) {
        if(parent===undefined) {
            parent = null;
        }
        if(invokingState===undefined || invokingState===null) {
            invokingState = -1;
        }
        super(parent, invokingState);
        this.parser = parser;
        this.ruleIndex = MultiAlternativesParser.RULE_main;
    }

	SP = function(i) {
		if(i===undefined) {
			i = null;
		}
	    if(i===null) {
	        return this.getTokens(MultiAlternativesParser.SP);
	    } else {
	        return this.getToken(MultiAlternativesParser.SP, i);
	    }
	};


	enterRule(listener) {
	    if(listener instanceof MultiAlternativesListener ) {
	        listener.enterMain(this);
		}
	}

	exitRule(listener) {
	    if(listener instanceof MultiAlternativesListener ) {
	        listener.exitMain(this);
		}
	}


}




MultiAlternativesParser.MainContext = MainContext; 

I'm surprised that https://www.antlr.org/download/antlr-4.9-complete.jar did not refer to the latest version 😮

I just downloaded https://www.antlr.org/download/antlr-4.9.2-complete.jar and can confirm that it is fixed in 4.9.2 👍

Sorry for bothering you. I thought that I'm already using 4.9.2 ☺️