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org.lockss.tdb.TdbLexer Maven / Gradle / Ivy
// Generated from org/lockss/tdb/TdbLexer.g4 by ANTLR 4.7.2
package org.lockss.tdb;
/* ===================================================================
WARNING - WARNING - WARNING - WARNING - WARNING - WARNING - WARNING
If you are modifying a Java file with this warning in it, you are
making changes in the wrong place. This Java file was generated by
ANTLR from a grammar file. You should be editing the grammar file
instead.
=================================================================== */
import org.antlr.v4.runtime.Lexer;
import org.antlr.v4.runtime.CharStream;
import org.antlr.v4.runtime.Token;
import org.antlr.v4.runtime.TokenStream;
import org.antlr.v4.runtime.*;
import org.antlr.v4.runtime.atn.*;
import org.antlr.v4.runtime.dfa.DFA;
import org.antlr.v4.runtime.misc.*;
@SuppressWarnings({"all", "warnings", "unchecked", "unused", "cast"})
public class TdbLexer extends Lexer {
static { RuntimeMetaData.checkVersion("4.7.2", RuntimeMetaData.VERSION); }
protected static final DFA[] _decisionToDFA;
protected static final PredictionContextCache _sharedContextCache =
new PredictionContextCache();
public static final int
STRING=1, PUBLISHER=2, TITLE=3, AU=4, IMPLICIT=5, CURLY_OPEN=6, CURLY_CLOSE=7,
ANGLE_OPEN=8, ANGLE_CLOSE=9, SEMICOLON=10, EQUALS=11, IDENTIFIER=12, WHITESPACE=13,
COMMENT=14;
public static final int
COMMENT_MODE=1;
public static String[] channelNames = {
"DEFAULT_TOKEN_CHANNEL", "HIDDEN"
};
public static String[] modeNames = {
"DEFAULT_MODE", "COMMENT_MODE"
};
private static String[] makeRuleNames() {
return new String[] {
"STRING", "PUBLISHER", "TITLE", "AU", "IMPLICIT", "CURLY_OPEN", "CURLY_CLOSE",
"ANGLE_OPEN", "ANGLE_CLOSE", "SEMICOLON", "EQUALS", "IDENTIFIER", "WHITESPACE",
"COMMENT", "COMMENT_SKIP", "COMMENT_END"
};
}
public static final String[] ruleNames = makeRuleNames();
private static String[] makeLiteralNames() {
return new String[] {
null, null, "'publisher'", "'title'", "'au'", "'implicit'", "'{'", "'}'",
"'<'", "'>'", "';'", "'='", null, null, "'#'"
};
}
private static final String[] _LITERAL_NAMES = makeLiteralNames();
private static String[] makeSymbolicNames() {
return new String[] {
null, "STRING", "PUBLISHER", "TITLE", "AU", "IMPLICIT", "CURLY_OPEN",
"CURLY_CLOSE", "ANGLE_OPEN", "ANGLE_CLOSE", "SEMICOLON", "EQUALS", "IDENTIFIER",
"WHITESPACE", "COMMENT"
};
}
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;
}
private static void syntaxError(String src, int line, int col, String fmt, Object... args) {
String msg = String.format("%s:%d:%d: %s", src, line, col, String.format(fmt, args));
throw new RuntimeException(msg);
}
enum SMode { NONE, AU, ANGLE, EQUALS }
SMode sMode = SMode.NONE;
SMode getSMode() { return sMode; }
void setSMode(SMode sMode) { this.sMode = sMode; }
boolean isNone() { return getSMode() == SMode.NONE; }
void modeNone() { setSMode(SMode.NONE); }
boolean isAu() { return getSMode() == SMode.AU; }
void modeAu() { setSMode(SMode.AU); }
boolean isAngle() { return getSMode() == SMode.ANGLE; }
void modeAngle() { setSMode(SMode.ANGLE); }
boolean isEquals() { return getSMode() == SMode.EQUALS; }
void modeEquals() { setSMode(SMode.EQUALS); }
enum SType { NONE, QUOTED, BARE, EMPTY }
SType sType = SType.NONE;
SType getSType() { return sType; }
void setSType(SType sType) { this.sType = sType; }
void typeQuoted() { setSType(SType.QUOTED); }
boolean isQuoted() { return getSType() == SType.QUOTED; }
void typeBare() { setSType(SType.BARE); }
boolean isBare() { return getSType() == SType.BARE; }
void typeEmpty() { setSType(SType.EMPTY); }
boolean isEmpty() { return getSType() == SType.EMPTY; }
boolean emitEpsilon = false;
java.util.LinkedList myTokens = new java.util.LinkedList();
boolean expectString() {
return isAngle() || isEquals();
}
void adjustStringMode() {
if (isAngle()) {
modeAu();
}
else if (isEquals()) {
modeNone();
}
}
boolean isQString() {
CharStream cs = getInputStream();
for (int i = 1 ; /*nothing*/ ; ++i) {
switch (cs.LA(i)) {
case ' ': case '\t': break;
case '"': typeQuoted(); return true;
default: return false;
}
}
}
boolean isBString() {
if (isQuoted()) {
return false;
}
CharStream cs = getInputStream();
for (int i = 1 ; /*nothing*/ ; ++i) {
switch (cs.LA(i)) {
case ' ': case '\t': break;
case '\\':
switch (cs.LA(i + 1)) {
case '\\': case ';': case '>': case '#': case '"': case ' ': typeBare(); return true;
default: return false;
}
case ';': case '>': case '#': case '\r': case '\n': case EOF: return false;
default: typeBare(); return true;
}
}
}
boolean isEmptyBString() {
if (isBare() || isQuoted()) {
return false;
}
CharStream cs = getInputStream();
for (int i = 1 ; /*nothing*/ ; ++i) {
switch (cs.LA(i)) {
case ' ': case '\t': break;
case ';': case '>': case '#': case '\r': case '\n': case EOF: typeEmpty(); return true;
default: return false;
}
}
}
void processString() {
switch (getSType()) {
case QUOTED: processQString(); adjustStringMode(); break;
case BARE: processBString(); adjustStringMode(); break;
case EMPTY: processEmptyBString(); break;
default: throw new RuntimeException("Error: expected string but got invalid string type");
}
setSType(SType.NONE);
}
void processQString() {
String ret = getText().trim();
ret = ret.substring(1, ret.length() - 1);
int ind = ret.indexOf('\\');
if (ind >= 0) {
StringBuilder sb = new StringBuilder();
for (int i = 0 ; i < ret.length() ; ++i) {
char ch = ret.charAt(i);
switch (ch) {
case '\\':
char ch2 = ret.charAt(i + 1);
switch (ch2) {
case '\\': case '"':
sb.append(ch2);
break;
default:
syntaxError(getSourceName(), getLine(), getCharPositionInLine(),
"Bad quoted string escape: %s", getCharErrorDisplay(ch2));
}
++i;
break;
default:
sb.append(ch);
break;
}
}
ret = sb.toString();
}
setText(ret);
}
void processBString() {
String ret = getText().trim();
if (ret.charAt(ret.length() - 1) == '\\') {
ret = ret + " "; // re-inject trailing escaped space
}
int ind = ret.indexOf('\\');
if (ind >= 0) {
StringBuilder sb = new StringBuilder();
for (int i = 0 ; i < ret.length() ; ++i) {
char ch = ret.charAt(i);
switch (ch) {
case '\\':
char ch2 = ret.charAt(i + 1);
switch (ch2) {
case '\\': case ';': case '>': case '#': case ' ':
sb.append(ch2);
break;
case '"':
if (i == 0) {
sb.append(ch2);
break;
}
// else drop down to error below (only valid at beginning of string)
default:
syntaxError(getSourceName(), getLine(), getCharPositionInLine(),
"Bad bare string escape: %s", getCharErrorDisplay(ch2));
}
++i;
break;
default:
sb.append(ch);
break;
}
}
ret = sb.toString();
}
setText(ret);
}
void processEmptyBString() {
adjustStringMode();
String ret = getText();
emitEpsilon = true;
char ch = ret.charAt(ret.length() - 1);
switch (ch) {
case ';': setType(SEMICOLON); actionSemicolon(); break;
case '>': setType(ANGLE_CLOSE); actionAngleClose(); break;
case '#': setType(COMMENT); pushMode(COMMENT_MODE); skip(); break;
case '\r': case '\n': setType(WHITESPACE); skip(); break;
default: syntaxError(getSourceName(), getLine(), getCharPositionInLine(),
"Expected end of string but got %s", getCharErrorDisplay(ch));
}
}
@Override
public void emit(Token token) {
if (emitEpsilon) {
emitEpsilon = false;
Token epsilon = getTokenFactory().create(_tokenFactorySourcePair, // source pair
STRING, // type
"", // text
token.getChannel(), // channel
token.getStartIndex(), // start index
token.getStartIndex(), // stop index
token.getLine(), // line
token.getCharPositionInLine()); // column
myTokens.add(epsilon);
}
myTokens.addLast(token);
setToken(token);
}
@Override
public Token nextToken() {
super.nextToken();
if (myTokens.isEmpty()) {
return emitEOF();
}
return myTokens.removeFirst();
}
void actionSemicolon() {
if (isAu()) {
modeAngle();
}
}
void actionAngleOpen() {
if (isAu()) {
modeAngle();
}
}
void actionAngleClose() {
if (isAu()) {
modeNone();
}
}
public TdbLexer(CharStream input) {
super(input);
_interp = new LexerATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
}
@Override
public String getGrammarFileName() { return "TdbLexer.g4"; }
@Override
public String[] getRuleNames() { return ruleNames; }
@Override
public String getSerializedATN() { return _serializedATN; }
@Override
public String[] getChannelNames() { return channelNames; }
@Override
public String[] getModeNames() { return modeNames; }
@Override
public ATN getATN() { return _ATN; }
@Override
public void action(RuleContext _localctx, int ruleIndex, int actionIndex) {
switch (ruleIndex) {
case 0:
STRING_action((RuleContext)_localctx, actionIndex);
break;
case 3:
AU_action((RuleContext)_localctx, actionIndex);
break;
case 7:
ANGLE_OPEN_action((RuleContext)_localctx, actionIndex);
break;
case 8:
ANGLE_CLOSE_action((RuleContext)_localctx, actionIndex);
break;
case 9:
SEMICOLON_action((RuleContext)_localctx, actionIndex);
break;
case 10:
EQUALS_action((RuleContext)_localctx, actionIndex);
break;
}
}
private void STRING_action(RuleContext _localctx, int actionIndex) {
switch (actionIndex) {
case 0:
processString();
break;
case 1:
processString();
break;
case 2:
processString();
break;
}
}
private void AU_action(RuleContext _localctx, int actionIndex) {
switch (actionIndex) {
case 3:
modeAu();
break;
}
}
private void ANGLE_OPEN_action(RuleContext _localctx, int actionIndex) {
switch (actionIndex) {
case 4:
actionAngleOpen();
break;
}
}
private void ANGLE_CLOSE_action(RuleContext _localctx, int actionIndex) {
switch (actionIndex) {
case 5:
actionAngleClose();
break;
}
}
private void SEMICOLON_action(RuleContext _localctx, int actionIndex) {
switch (actionIndex) {
case 6:
actionSemicolon();
break;
}
}
private void EQUALS_action(RuleContext _localctx, int actionIndex) {
switch (actionIndex) {
case 7:
modeEquals();
break;
}
}
@Override
public boolean sempred(RuleContext _localctx, int ruleIndex, int predIndex) {
switch (ruleIndex) {
case 0:
return STRING_sempred((RuleContext)_localctx, predIndex);
case 12:
return WHITESPACE_sempred((RuleContext)_localctx, predIndex);
}
return true;
}
private boolean STRING_sempred(RuleContext _localctx, int predIndex) {
switch (predIndex) {
case 0:
return expectString() && isQString();
case 1:
return expectString() && isBString();
case 2:
return expectString() && isEmptyBString();
}
return true;
}
private boolean WHITESPACE_sempred(RuleContext _localctx, int predIndex) {
switch (predIndex) {
case 3:
return !expectString();
}
return true;
}
public static final String _serializedATN =
"\3\u608b\ua72a\u8133\ub9ed\u417c\u3be7\u7786\u5964\2\20\u00b0\b\1\b\1"+
"\4\2\t\2\4\3\t\3\4\4\t\4\4\5\t\5\4\6\t\6\4\7\t\7\4\b\t\b\4\t\t\t\4\n\t"+
"\n\4\13\t\13\4\f\t\f\4\r\t\r\4\16\t\16\4\17\t\17\4\20\t\20\4\21\t\21\3"+
"\2\3\2\7\2\'\n\2\f\2\16\2*\13\2\3\2\3\2\3\2\3\2\7\2\60\n\2\f\2\16\2\63"+
"\13\2\3\2\3\2\3\2\3\2\7\29\n\2\f\2\16\2<\13\2\3\2\3\2\3\2\5\2A\n\2\3\2"+
"\3\2\3\2\7\2F\n\2\f\2\16\2I\13\2\3\2\3\2\3\2\7\2N\n\2\f\2\16\2Q\13\2\3"+
"\2\3\2\5\2U\n\2\3\3\3\3\3\3\3\3\3\3\3\3\3\3\3\3\3\3\3\3\3\4\3\4\3\4\3"+
"\4\3\4\3\4\3\5\3\5\3\5\3\5\3\5\3\6\3\6\3\6\3\6\3\6\3\6\3\6\3\6\3\6\3\7"+
"\3\7\3\b\3\b\3\t\3\t\3\t\3\n\3\n\3\n\3\13\3\13\3\13\3\f\3\f\3\f\3\r\3"+
"\r\7\r\u0087\n\r\f\r\16\r\u008a\13\r\3\r\3\r\3\r\7\r\u008f\n\r\f\r\16"+
"\r\u0092\13\r\3\r\5\r\u0095\n\r\3\16\3\16\6\16\u0099\n\16\r\16\16\16\u009a"+
"\3\16\3\16\3\17\3\17\3\17\3\17\3\17\3\20\6\20\u00a5\n\20\r\20\16\20\u00a6"+
"\3\20\3\20\3\21\3\21\3\21\3\21\3\21\3\21\2\2\22\4\3\6\4\b\5\n\6\f\7\16"+
"\b\20\t\22\n\24\13\26\f\30\r\32\16\34\17\36\20 \2\"\2\4\2\3\17\4\2\13"+
"\13\"\"\4\2$$^^\7\2\"\"$%==@@^^\t\2\13\f\17\17\"\"$%==@@^^\7\2\"\"%%="+
"=@@^^\b\2\f\f\17\17%%==@@^^\7\2\f\f\17\17%%==@@\4\2C\\c|\7\2\60\60\62"+
";C\\aac|\5\2\62;C\\c|\6\2\60;C\\aac|\5\2\13\f\17\17\"\"\4\2\f\f\17\17"+
"\2\u00bd\2\4\3\2\2\2\2\6\3\2\2\2\2\b\3\2\2\2\2\n\3\2\2\2\2\f\3\2\2\2\2"+
"\16\3\2\2\2\2\20\3\2\2\2\2\22\3\2\2\2\2\24\3\2\2\2\2\26\3\2\2\2\2\30\3"+
"\2\2\2\2\32\3\2\2\2\2\34\3\2\2\2\2\36\3\2\2\2\3 \3\2\2\2\3\"\3\2\2\2\4"+
"T\3\2\2\2\6V\3\2\2\2\b`\3\2\2\2\nf\3\2\2\2\fk\3\2\2\2\16t\3\2\2\2\20v"+
"\3\2\2\2\22x\3\2\2\2\24{\3\2\2\2\26~\3\2\2\2\30\u0081\3\2\2\2\32\u0084"+
"\3\2\2\2\34\u0096\3\2\2\2\36\u009e\3\2\2\2 \u00a4\3\2\2\2\"\u00aa\3\2"+
"\2\2$(\6\2\2\2%\'\t\2\2\2&%\3\2\2\2\'*\3\2\2\2(&\3\2\2\2()\3\2\2\2)+\3"+
"\2\2\2*(\3\2\2\2+\61\7$\2\2,-\7^\2\2-\60\t\3\2\2.\60\n\3\2\2/,\3\2\2\2"+
"/.\3\2\2\2\60\63\3\2\2\2\61/\3\2\2\2\61\62\3\2\2\2\62\64\3\2\2\2\63\61"+
"\3\2\2\2\64\65\7$\2\2\65U\b\2\2\2\66:\6\2\3\2\679\t\2\2\28\67\3\2\2\2"+
"9<\3\2\2\2:8\3\2\2\2:;\3\2\2\2;@\3\2\2\2<:\3\2\2\2=>\7^\2\2>A\t\4\2\2"+
"?A\n\5\2\2@=\3\2\2\2@?\3\2\2\2AG\3\2\2\2BC\7^\2\2CF\t\6\2\2DF\n\7\2\2"+
"EB\3\2\2\2ED\3\2\2\2FI\3\2\2\2GE\3\2\2\2GH\3\2\2\2HJ\3\2\2\2IG\3\2\2\2"+
"JU\b\2\3\2KO\6\2\4\2LN\t\2\2\2ML\3\2\2\2NQ\3\2\2\2OM\3\2\2\2OP\3\2\2\2"+
"PR\3\2\2\2QO\3\2\2\2RS\t\b\2\2SU\b\2\4\2T$\3\2\2\2T\66\3\2\2\2TK\3\2\2"+
"\2U\5\3\2\2\2VW\7r\2\2WX\7w\2\2XY\7d\2\2YZ\7n\2\2Z[\7k\2\2[\\\7u\2\2\\"+
"]\7j\2\2]^\7g\2\2^_\7t\2\2_\7\3\2\2\2`a\7v\2\2ab\7k\2\2bc\7v\2\2cd\7n"+
"\2\2de\7g\2\2e\t\3\2\2\2fg\7c\2\2gh\7w\2\2hi\3\2\2\2ij\b\5\5\2j\13\3\2"+
"\2\2kl\7k\2\2lm\7o\2\2mn\7r\2\2no\7n\2\2op\7k\2\2pq\7e\2\2qr\7k\2\2rs"+
"\7v\2\2s\r\3\2\2\2tu\7}\2\2u\17\3\2\2\2vw\7\177\2\2w\21\3\2\2\2xy\7>\2"+
"\2yz\b\t\6\2z\23\3\2\2\2{|\7@\2\2|}\b\n\7\2}\25\3\2\2\2~\177\7=\2\2\177"+
"\u0080\b\13\b\2\u0080\27\3\2\2\2\u0081\u0082\7?\2\2\u0082\u0083\b\f\t"+
"\2\u0083\31\3\2\2\2\u0084\u0088\t\t\2\2\u0085\u0087\t\n\2\2\u0086\u0085"+
"\3\2\2\2\u0087\u008a\3\2\2\2\u0088\u0086\3\2\2\2\u0088\u0089\3\2\2\2\u0089"+
"\u0094\3\2\2\2\u008a\u0088\3\2\2\2\u008b\u008c\7]\2\2\u008c\u0090\t\13"+
"\2\2\u008d\u008f\t\f\2\2\u008e\u008d\3\2\2\2\u008f\u0092\3\2\2\2\u0090"+
"\u008e\3\2\2\2\u0090\u0091\3\2\2\2\u0091\u0093\3\2\2\2\u0092\u0090\3\2"+
"\2\2\u0093\u0095\7_\2\2\u0094\u008b\3\2\2\2\u0094\u0095\3\2\2\2\u0095"+
"\33\3\2\2\2\u0096\u0098\6\16\5\2\u0097\u0099\t\r\2\2\u0098\u0097\3\2\2"+
"\2\u0099\u009a\3\2\2\2\u009a\u0098\3\2\2\2\u009a\u009b\3\2\2\2\u009b\u009c"+
"\3\2\2\2\u009c\u009d\b\16\n\2\u009d\35\3\2\2\2\u009e\u009f\7%\2\2\u009f"+
"\u00a0\3\2\2\2\u00a0\u00a1\b\17\13\2\u00a1\u00a2\b\17\f\2\u00a2\37\3\2"+
"\2\2\u00a3\u00a5\n\16\2\2\u00a4\u00a3\3\2\2\2\u00a5\u00a6\3\2\2\2\u00a6"+
"\u00a4\3\2\2\2\u00a6\u00a7\3\2\2\2\u00a7\u00a8\3\2\2\2\u00a8\u00a9\b\20"+
"\13\2\u00a9!\3\2\2\2\u00aa\u00ab\t\16\2\2\u00ab\u00ac\3\2\2\2\u00ac\u00ad"+
"\b\21\r\2\u00ad\u00ae\b\21\n\2\u00ae\u00af\b\21\16\2\u00af#\3\2\2\2\22"+
"\2\3(/\61:@EGOT\u0088\u0090\u0094\u009a\u00a6\17\3\2\2\3\2\3\3\2\4\3\5"+
"\5\3\t\6\3\n\7\3\13\b\3\f\t\b\2\2\5\2\2\7\3\2\t\20\2\6\2\2";
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);
}
}
}
