GrammarParser.java

// Generated from Grammar.g4 by ANTLR 4.9.2
import org.antlr.v4.runtime.atn.*;
import org.antlr.v4.runtime.dfa.DFA;
import org.antlr.v4.runtime.*;
import org.antlr.v4.runtime.misc.*;
import org.antlr.v4.runtime.tree.*;
import java.util.List;
import java.util.Iterator;
import java.util.ArrayList;

@SuppressWarnings({"all", "warnings", "unchecked", "unused", "cast"})
public class GrammarParser extends Parser {
	static { RuntimeMetaData.checkVersion("4.9.2", RuntimeMetaData.VERSION); }

	protected static final DFA[] _decisionToDFA;
	protected static final PredictionContextCache _sharedContextCache =
		new PredictionContextCache();
	public static final int
		T__0=1, T__1=2, T__2=3, T__3=4, Num=5;
	public static final int
		RULE_prog = 0, RULE_expr = 1;
	private static String[] makeRuleNames() {
		return new String[] {
			"prog", "expr"
		};
	}
	public static final String[] ruleNames = makeRuleNames();

	private static String[] makeLiteralNames() {
		return new String[] {
			null, "'/'", "'*'", "'+'", "'-'"
		};
	}
	private static final String[] _LITERAL_NAMES = makeLiteralNames();
	private static String[] makeSymbolicNames() {
		return new String[] {
			null, null, null, null, null, "Num"
		};
	}
	private static final String[] _SYMBOLIC_NAMES = makeSymbolicNames();
	public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);

	/**
	 * @deprecated Use {@link #VOCABULARY} instead.
	 */
	@Deprecated
	public static final String[] tokenNames;
	static {
		tokenNames = new String[_SYMBOLIC_NAMES.length];
		for (int i = 0; i < tokenNames.length; i++) {
			tokenNames[i] = VOCABULARY.getLiteralName(i);
			if (tokenNames[i] == null) {
				tokenNames[i] = VOCABULARY.getSymbolicName(i);
			}

			if (tokenNames[i] == null) {
				tokenNames[i] = "<INVALID>";
			}
		}
	}

	@Override
	@Deprecated
	public String[] getTokenNames() {
		return tokenNames;
	}

	@Override

	public Vocabulary getVocabulary() {
		return VOCABULARY;
	}

	@Override
	public String getGrammarFileName() { return "Grammar.g4"; }

	@Override
	public String[] getRuleNames() { return ruleNames; }

	@Override
	public String getSerializedATN() { return _serializedATN; }

	@Override
	public ATN getATN() { return _ATN; }

	public GrammarParser(TokenStream input) {
		super(input);
		_interp = new ParserATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
	}

	public static class ProgContext extends ParserRuleContext {
		public ExprContext expr() {
			return getRuleContext(ExprContext.class,0);
		}
		public TerminalNode EOF() { return getToken(GrammarParser.EOF, 0); }
		public ProgContext(ParserRuleContext parent, int invokingState) {
			super(parent, invokingState);
		}
		@Override public int getRuleIndex() { return RULE_prog; }
		@Override
		public void enterRule(ParseTreeListener listener) {
			if ( listener instanceof GrammarListener ) ((GrammarListener)listener).enterProg(this);
		}
		@Override
		public void exitRule(ParseTreeListener listener) {
			if ( listener instanceof GrammarListener ) ((GrammarListener)listener).exitProg(this);
		}
		@Override
		public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
			if ( visitor instanceof GrammarVisitor ) return ((GrammarVisitor<? extends T>)visitor).visitProg(this);
			else return visitor.visitChildren(this);
		}
	}

	public final ProgContext prog() throws RecognitionException {
		ProgContext _localctx = new ProgContext(_ctx, getState());
		enterRule(_localctx, 0, RULE_prog);
		try {
			enterOuterAlt(_localctx, 1);
			{
			setState(4);
			expr(0);
			setState(5);
			match(EOF);
			}
		}
		catch (RecognitionException re) {
			_localctx.exception = re;
			_errHandler.reportError(this, re);
			_errHandler.recover(this, re);
		}
		finally {
			exitRule();
		}
		return _localctx;
	}

	public static class ExprContext extends ParserRuleContext {
		public ExprContext(ParserRuleContext parent, int invokingState) {
			super(parent, invokingState);
		}
		@Override public int getRuleIndex() { return RULE_expr; }
	 
		public ExprContext() { }
		public void copyFrom(ExprContext ctx) {
			super.copyFrom(ctx);
		}
	}
	public static class OperacionBinariaContext extends ExprContext {
		public Token op;
		public List<ExprContext> expr() {
			return getRuleContexts(ExprContext.class);
		}
		public ExprContext expr(int i) {
			return getRuleContext(ExprContext.class,i);
		}
		public OperacionBinariaContext(ExprContext ctx) { copyFrom(ctx); }
		@Override
		public void enterRule(ParseTreeListener listener) {
			if ( listener instanceof GrammarListener ) ((GrammarListener)listener).enterOperacionBinaria(this);
		}
		@Override
		public void exitRule(ParseTreeListener listener) {
			if ( listener instanceof GrammarListener ) ((GrammarListener)listener).exitOperacionBinaria(this);
		}
		@Override
		public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
			if ( visitor instanceof GrammarVisitor ) return ((GrammarVisitor<? extends T>)visitor).visitOperacionBinaria(this);
			else return visitor.visitChildren(this);
		}
	}
	public static class NumeroContext extends ExprContext {
		public TerminalNode Num() { return getToken(GrammarParser.Num, 0); }
		public NumeroContext(ExprContext ctx) { copyFrom(ctx); }
		@Override
		public void enterRule(ParseTreeListener listener) {
			if ( listener instanceof GrammarListener ) ((GrammarListener)listener).enterNumero(this);
		}
		@Override
		public void exitRule(ParseTreeListener listener) {
			if ( listener instanceof GrammarListener ) ((GrammarListener)listener).exitNumero(this);
		}
		@Override
		public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
			if ( visitor instanceof GrammarVisitor ) return ((GrammarVisitor<? extends T>)visitor).visitNumero(this);
			else return visitor.visitChildren(this);
		}
	}

	public final ExprContext expr() throws RecognitionException {
		return expr(0);
	}

	private ExprContext expr(int _p) throws RecognitionException {
		ParserRuleContext _parentctx = _ctx;
		int _parentState = getState();
		ExprContext _localctx = new ExprContext(_ctx, _parentState);
		ExprContext _prevctx = _localctx;
		int _startState = 2;
		enterRecursionRule(_localctx, 2, RULE_expr, _p);
		int _la;
		try {
			int _alt;
			enterOuterAlt(_localctx, 1);
			{
			{
			_localctx = new NumeroContext(_localctx);
			_ctx = _localctx;
			_prevctx = _localctx;

			setState(8);
			match(Num);
			}
			_ctx.stop = _input.LT(-1);
			setState(18);
			_errHandler.sync(this);
			_alt = getInterpreter().adaptivePredict(_input,1,_ctx);
			while ( _alt!=2 && _alt!=org.antlr.v4.runtime.atn.ATN.INVALID_ALT_NUMBER ) {
				if ( _alt==1 ) {
					if ( _parseListeners!=null ) triggerExitRuleEvent();
					_prevctx = _localctx;
					{
					setState(16);
					_errHandler.sync(this);
					switch ( getInterpreter().adaptivePredict(_input,0,_ctx) ) {
					case 1:
						{
						_localctx = new OperacionBinariaContext(new ExprContext(_parentctx, _parentState));
						pushNewRecursionContext(_localctx, _startState, RULE_expr);
						setState(10);
						if (!(precpred(_ctx, 3))) throw new FailedPredicateException(this, "precpred(_ctx, 3)");
						setState(11);
						((OperacionBinariaContext)_localctx).op = _input.LT(1);
						_la = _input.LA(1);
						if ( !(_la==T__0 || _la==T__1) ) {
							((OperacionBinariaContext)_localctx).op = (Token)_errHandler.recoverInline(this);
						}
						else {
							if ( _input.LA(1)==Token.EOF ) matchedEOF = true;
							_errHandler.reportMatch(this);
							consume();
						}
						setState(12);
						expr(4);
						}
						break;
					case 2:
						{
						_localctx = new OperacionBinariaContext(new ExprContext(_parentctx, _parentState));
						pushNewRecursionContext(_localctx, _startState, RULE_expr);
						setState(13);
						if (!(precpred(_ctx, 2))) throw new FailedPredicateException(this, "precpred(_ctx, 2)");
						setState(14);
						((OperacionBinariaContext)_localctx).op = _input.LT(1);
						_la = _input.LA(1);
						if ( !(_la==T__2 || _la==T__3) ) {
							((OperacionBinariaContext)_localctx).op = (Token)_errHandler.recoverInline(this);
						}
						else {
							if ( _input.LA(1)==Token.EOF ) matchedEOF = true;
							_errHandler.reportMatch(this);
							consume();
						}
						setState(15);
						expr(3);
						}
						break;
					}
					} 
				}
				setState(20);
				_errHandler.sync(this);
				_alt = getInterpreter().adaptivePredict(_input,1,_ctx);
			}
			}
		}
		catch (RecognitionException re) {
			_localctx.exception = re;
			_errHandler.reportError(this, re);
			_errHandler.recover(this, re);
		}
		finally {
			unrollRecursionContexts(_parentctx);
		}
		return _localctx;
	}

	public boolean sempred(RuleContext _localctx, int ruleIndex, int predIndex) {
		switch (ruleIndex) {
		case 1:
			return expr_sempred((ExprContext)_localctx, predIndex);
		}
		return true;
	}
	private boolean expr_sempred(ExprContext _localctx, int predIndex) {
		switch (predIndex) {
		case 0:
			return precpred(_ctx, 3);
		case 1:
			return precpred(_ctx, 2);
		}
		return true;
	}

	public static final String _serializedATN =
		"\3\u608b\ua72a\u8133\ub9ed\u417c\u3be7\u7786\u5964\3\7\30\4\2\t\2\4\3"+
		"\t\3\3\2\3\2\3\2\3\3\3\3\3\3\3\3\3\3\3\3\3\3\3\3\3\3\7\3\23\n\3\f\3\16"+
		"\3\26\13\3\3\3\2\3\4\4\2\4\2\4\3\2\3\4\3\2\5\6\2\27\2\6\3\2\2\2\4\t\3"+
		"\2\2\2\6\7\5\4\3\2\7\b\7\2\2\3\b\3\3\2\2\2\t\n\b\3\1\2\n\13\7\7\2\2\13"+
		"\24\3\2\2\2\f\r\f\5\2\2\r\16\t\2\2\2\16\23\5\4\3\6\17\20\f\4\2\2\20\21"+
		"\t\3\2\2\21\23\5\4\3\5\22\f\3\2\2\2\22\17\3\2\2\2\23\26\3\2\2\2\24\22"+
		"\3\2\2\2\24\25\3\2\2\2\25\5\3\2\2\2\26\24\3\2\2\2\4\22\24";
	public static final ATN _ATN =
		new ATNDeserializer().deserialize(_serializedATN.toCharArray());
	static {
		_decisionToDFA = new DFA[_ATN.getNumberOfDecisions()];
		for (int i = 0; i < _ATN.getNumberOfDecisions(); i++) {
			_decisionToDFA[i] = new DFA(_ATN.getDecisionState(i), i);
		}
	}
}