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// Generated from org/jgrapht/nio/csv/CSV.g4 by ANTLR 4.12.0
package org.jgrapht.nio.csv;
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", "CheckReturnValue"})
class CSVParser extends Parser {
	static { RuntimeMetaData.checkVersion("4.12.0", RuntimeMetaData.VERSION); }

	protected static final DFA[] _decisionToDFA;
	protected static final PredictionContextCache _sharedContextCache =
		new PredictionContextCache();
	public static final int
		T__0=1, T__1=2, SEPARATOR=3, TEXT=4, STRING=5;
	public static final int
		RULE_file = 0, RULE_header = 1, RULE_record = 2, RULE_field = 3;
	private static String[] makeRuleNames() {
		return new String[] {
			"file", "header", "record", "field"
		};
	}
	public static final String[] ruleNames = makeRuleNames();

	private static String[] makeLiteralNames() {
		return new String[] {
			null, "'\\r'", "'\\n'"
		};
	}
	private static final String[] _LITERAL_NAMES = makeLiteralNames();
	private static String[] makeSymbolicNames() {
		return new String[] {
			null, null, null, "SEPARATOR", "TEXT", "STRING"
		};
	}
	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] = "";
			}
		}
	}

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

	@Override

	public Vocabulary getVocabulary() {
		return VOCABULARY;
	}

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

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

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

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

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

	@SuppressWarnings("CheckReturnValue")
	public static class FileContext extends ParserRuleContext {
		public HeaderContext header() {
			return getRuleContext(HeaderContext.class,0);
		}
		public List record() {
			return getRuleContexts(RecordContext.class);
		}
		public RecordContext record(int i) {
			return getRuleContext(RecordContext.class,i);
		}
		public FileContext(ParserRuleContext parent, int invokingState) {
			super(parent, invokingState);
		}
		@Override public int getRuleIndex() { return RULE_file; }
		@Override
		public void enterRule(ParseTreeListener listener) {
			if ( listener instanceof CSVListener ) ((CSVListener)listener).enterFile(this);
		}
		@Override
		public void exitRule(ParseTreeListener listener) {
			if ( listener instanceof CSVListener ) ((CSVListener)listener).exitFile(this);
		}
	}

	public final FileContext file() throws RecognitionException {
		FileContext _localctx = new FileContext(_ctx, getState());
		enterRule(_localctx, 0, RULE_file);
		int _la;
		try {
			enterOuterAlt(_localctx, 1);
			{
			setState(8);
			header();
			setState(10); 
			_errHandler.sync(this);
			_la = _input.LA(1);
			do {
				{
				{
				setState(9);
				record();
				}
				}
				setState(12); 
				_errHandler.sync(this);
				_la = _input.LA(1);
			} while ( (((_la) & ~0x3f) == 0 && ((1L << _la) & 62L) != 0) );
			}
		}
		catch (RecognitionException re) {
			_localctx.exception = re;
			_errHandler.reportError(this, re);
			_errHandler.recover(this, re);
		}
		finally {
			exitRule();
		}
		return _localctx;
	}

	@SuppressWarnings("CheckReturnValue")
	public static class HeaderContext extends ParserRuleContext {
		public RecordContext record() {
			return getRuleContext(RecordContext.class,0);
		}
		public HeaderContext(ParserRuleContext parent, int invokingState) {
			super(parent, invokingState);
		}
		@Override public int getRuleIndex() { return RULE_header; }
		@Override
		public void enterRule(ParseTreeListener listener) {
			if ( listener instanceof CSVListener ) ((CSVListener)listener).enterHeader(this);
		}
		@Override
		public void exitRule(ParseTreeListener listener) {
			if ( listener instanceof CSVListener ) ((CSVListener)listener).exitHeader(this);
		}
	}

	public final HeaderContext header() throws RecognitionException {
		HeaderContext _localctx = new HeaderContext(_ctx, getState());
		enterRule(_localctx, 2, RULE_header);
		try {
			enterOuterAlt(_localctx, 1);
			{
			setState(14);
			record();
			}
		}
		catch (RecognitionException re) {
			_localctx.exception = re;
			_errHandler.reportError(this, re);
			_errHandler.recover(this, re);
		}
		finally {
			exitRule();
		}
		return _localctx;
	}

	@SuppressWarnings("CheckReturnValue")
	public static class RecordContext extends ParserRuleContext {
		public List field() {
			return getRuleContexts(FieldContext.class);
		}
		public FieldContext field(int i) {
			return getRuleContext(FieldContext.class,i);
		}
		public List SEPARATOR() { return getTokens(CSVParser.SEPARATOR); }
		public TerminalNode SEPARATOR(int i) {
			return getToken(CSVParser.SEPARATOR, i);
		}
		public RecordContext(ParserRuleContext parent, int invokingState) {
			super(parent, invokingState);
		}
		@Override public int getRuleIndex() { return RULE_record; }
		@Override
		public void enterRule(ParseTreeListener listener) {
			if ( listener instanceof CSVListener ) ((CSVListener)listener).enterRecord(this);
		}
		@Override
		public void exitRule(ParseTreeListener listener) {
			if ( listener instanceof CSVListener ) ((CSVListener)listener).exitRecord(this);
		}
	}

	public final RecordContext record() throws RecognitionException {
		RecordContext _localctx = new RecordContext(_ctx, getState());
		enterRule(_localctx, 4, RULE_record);
		int _la;
		try {
			enterOuterAlt(_localctx, 1);
			{
			setState(16);
			field();
			setState(21);
			_errHandler.sync(this);
			_la = _input.LA(1);
			while (_la==SEPARATOR) {
				{
				{
				setState(17);
				match(SEPARATOR);
				setState(18);
				field();
				}
				}
				setState(23);
				_errHandler.sync(this);
				_la = _input.LA(1);
			}
			setState(25);
			_errHandler.sync(this);
			_la = _input.LA(1);
			if (_la==T__0) {
				{
				setState(24);
				match(T__0);
				}
			}

			setState(27);
			match(T__1);
			}
		}
		catch (RecognitionException re) {
			_localctx.exception = re;
			_errHandler.reportError(this, re);
			_errHandler.recover(this, re);
		}
		finally {
			exitRule();
		}
		return _localctx;
	}

	@SuppressWarnings("CheckReturnValue")
	public static class FieldContext extends ParserRuleContext {
		public FieldContext(ParserRuleContext parent, int invokingState) {
			super(parent, invokingState);
		}
		@Override public int getRuleIndex() { return RULE_field; }
	 
		public FieldContext() { }
		public void copyFrom(FieldContext ctx) {
			super.copyFrom(ctx);
		}
	}
	@SuppressWarnings("CheckReturnValue")
	public static class EmptyFieldContext extends FieldContext {
		public EmptyFieldContext(FieldContext ctx) { copyFrom(ctx); }
		@Override
		public void enterRule(ParseTreeListener listener) {
			if ( listener instanceof CSVListener ) ((CSVListener)listener).enterEmptyField(this);
		}
		@Override
		public void exitRule(ParseTreeListener listener) {
			if ( listener instanceof CSVListener ) ((CSVListener)listener).exitEmptyField(this);
		}
	}
	@SuppressWarnings("CheckReturnValue")
	public static class StringFieldContext extends FieldContext {
		public TerminalNode STRING() { return getToken(CSVParser.STRING, 0); }
		public StringFieldContext(FieldContext ctx) { copyFrom(ctx); }
		@Override
		public void enterRule(ParseTreeListener listener) {
			if ( listener instanceof CSVListener ) ((CSVListener)listener).enterStringField(this);
		}
		@Override
		public void exitRule(ParseTreeListener listener) {
			if ( listener instanceof CSVListener ) ((CSVListener)listener).exitStringField(this);
		}
	}
	@SuppressWarnings("CheckReturnValue")
	public static class TextFieldContext extends FieldContext {
		public TerminalNode TEXT() { return getToken(CSVParser.TEXT, 0); }
		public TextFieldContext(FieldContext ctx) { copyFrom(ctx); }
		@Override
		public void enterRule(ParseTreeListener listener) {
			if ( listener instanceof CSVListener ) ((CSVListener)listener).enterTextField(this);
		}
		@Override
		public void exitRule(ParseTreeListener listener) {
			if ( listener instanceof CSVListener ) ((CSVListener)listener).exitTextField(this);
		}
	}

	public final FieldContext field() throws RecognitionException {
		FieldContext _localctx = new FieldContext(_ctx, getState());
		enterRule(_localctx, 6, RULE_field);
		try {
			setState(32);
			_errHandler.sync(this);
			switch (_input.LA(1)) {
			case TEXT:
				_localctx = new TextFieldContext(_localctx);
				enterOuterAlt(_localctx, 1);
				{
				setState(29);
				match(TEXT);
				}
				break;
			case STRING:
				_localctx = new StringFieldContext(_localctx);
				enterOuterAlt(_localctx, 2);
				{
				setState(30);
				match(STRING);
				}
				break;
			case T__0:
			case T__1:
			case SEPARATOR:
				_localctx = new EmptyFieldContext(_localctx);
				enterOuterAlt(_localctx, 3);
				{
				}
				break;
			default:
				throw new NoViableAltException(this);
			}
		}
		catch (RecognitionException re) {
			_localctx.exception = re;
			_errHandler.reportError(this, re);
			_errHandler.recover(this, re);
		}
		finally {
			exitRule();
		}
		return _localctx;
	}

	public static final String _serializedATN =
		"\u0004\u0001\u0005#\u0002\u0000\u0007\u0000\u0002\u0001\u0007\u0001\u0002"+
		"\u0002\u0007\u0002\u0002\u0003\u0007\u0003\u0001\u0000\u0001\u0000\u0004"+
		"\u0000\u000b\b\u0000\u000b\u0000\f\u0000\f\u0001\u0001\u0001\u0001\u0001"+
		"\u0002\u0001\u0002\u0001\u0002\u0005\u0002\u0014\b\u0002\n\u0002\f\u0002"+
		"\u0017\t\u0002\u0001\u0002\u0003\u0002\u001a\b\u0002\u0001\u0002\u0001"+
		"\u0002\u0001\u0003\u0001\u0003\u0001\u0003\u0003\u0003!\b\u0003\u0001"+
		"\u0003\u0000\u0000\u0004\u0000\u0002\u0004\u0006\u0000\u0000#\u0000\b"+
		"\u0001\u0000\u0000\u0000\u0002\u000e\u0001\u0000\u0000\u0000\u0004\u0010"+
		"\u0001\u0000\u0000\u0000\u0006 \u0001\u0000\u0000\u0000\b\n\u0003\u0002"+
		"\u0001\u0000\t\u000b\u0003\u0004\u0002\u0000\n\t\u0001\u0000\u0000\u0000"+
		"\u000b\f\u0001\u0000\u0000\u0000\f\n\u0001\u0000\u0000\u0000\f\r\u0001"+
		"\u0000\u0000\u0000\r\u0001\u0001\u0000\u0000\u0000\u000e\u000f\u0003\u0004"+
		"\u0002\u0000\u000f\u0003\u0001\u0000\u0000\u0000\u0010\u0015\u0003\u0006"+
		"\u0003\u0000\u0011\u0012\u0005\u0003\u0000\u0000\u0012\u0014\u0003\u0006"+
		"\u0003\u0000\u0013\u0011\u0001\u0000\u0000\u0000\u0014\u0017\u0001\u0000"+
		"\u0000\u0000\u0015\u0013\u0001\u0000\u0000\u0000\u0015\u0016\u0001\u0000"+
		"\u0000\u0000\u0016\u0019\u0001\u0000\u0000\u0000\u0017\u0015\u0001\u0000"+
		"\u0000\u0000\u0018\u001a\u0005\u0001\u0000\u0000\u0019\u0018\u0001\u0000"+
		"\u0000\u0000\u0019\u001a\u0001\u0000\u0000\u0000\u001a\u001b\u0001\u0000"+
		"\u0000\u0000\u001b\u001c\u0005\u0002\u0000\u0000\u001c\u0005\u0001\u0000"+
		"\u0000\u0000\u001d!\u0005\u0004\u0000\u0000\u001e!\u0005\u0005\u0000\u0000"+
		"\u001f!\u0001\u0000\u0000\u0000 \u001d\u0001\u0000\u0000\u0000 \u001e"+
		"\u0001\u0000\u0000\u0000 \u001f\u0001\u0000\u0000\u0000!\u0007\u0001\u0000"+
		"\u0000\u0000\u0004\f\u0015\u0019 ";
	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);
		}
	}
}