Example usage for org.antlr.v4.runtime Parser getCurrentToken

List of usage examples for org.antlr.v4.runtime Parser getCurrentToken

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Introduction

In this page you can find the example usage for org.antlr.v4.runtime Parser getCurrentToken.

Prototype


public Token getCurrentToken()

Source Link

Document

Match needs to return the current input symbol, which gets put into the label for the associated token ref; e.g., x=ID.

Usage

From source file:com.eprosima.idl.parser.strategy.DefaultErrorStrategy.java

License:Apache License

@Override
protected void reportUnwantedToken(@NotNull Parser recognizer) {
    if (inErrorRecoveryMode(recognizer)) {
        return;//  w w  w. j  ava 2s. c  o m
    }

    beginErrorCondition(recognizer);
    Token t = recognizer.getCurrentToken();
    String tokenName = getTokenErrorDisplay(t);
    String msg = "Unexpected input " + ColorMessage.bold(tokenName);
    recognizer.notifyErrorListeners(t, msg, null);
}

From source file:com.facebook.presto.sql.parser.ErrorHandler.java

License:Apache License

@Override
public void syntaxError(Recognizer<?, ?> recognizer, Object offendingSymbol, int line, int charPositionInLine,
        String message, RecognitionException e) {
    try {//  ww  w .  j a  v  a2  s  .  c  o  m
        Parser parser = (Parser) recognizer;

        ATN atn = parser.getATN();

        ATNState currentState;
        Token currentToken;
        RuleContext context;

        if (e != null) {
            currentState = atn.states.get(e.getOffendingState());
            currentToken = e.getOffendingToken();
            context = e.getCtx();

            if (e instanceof NoViableAltException) {
                currentToken = ((NoViableAltException) e).getStartToken();
            }
        } else {
            currentState = atn.states.get(parser.getState());
            currentToken = parser.getCurrentToken();
            context = parser.getContext();
        }

        Analyzer analyzer = new Analyzer(atn, parser.getVocabulary(), specialRules, specialTokens, ignoredRules,
                parser.getTokenStream());
        Multimap<Integer, String> candidates = analyzer.process(currentState, currentToken.getTokenIndex(),
                context);

        // pick the candidate tokens associated largest token index processed (i.e., the path that consumed the most input)
        String expected = candidates.asMap().entrySet().stream().max(Comparator.comparing(Map.Entry::getKey))
                .get().getValue().stream().sorted().collect(Collectors.joining(", "));

        message = String.format("mismatched input '%s'. Expecting: %s", ((Token) offendingSymbol).getText(),
                expected);
    } catch (Exception exception) {
        LOG.error(exception,
                "Unexpected failure when handling parsing error. This is likely a bug in the implementation");
    }

    throw new ParsingException(message, e, line, charPositionInLine);
}

From source file:com.github.jknack.handlebars.internal.HbsErrorStrategy.java

License:Apache License

@Override
public void reportMissingToken(final Parser recognizer) {
    if (errorRecoveryMode) {
        return;/*w  w  w.j  av a  2s.co  m*/
    }
    Token offendingToken = recognizer.getCurrentToken();
    IntervalSet expecting = getExpectedTokens(recognizer);
    String msg = expecting.toString(recognizer.getTokenNames());

    recognizer.notifyErrorListeners(offendingToken, msg, null);
}

From source file:com.nextbreakpoint.nextfractal.contextfree.compiler.CompilerErrorStrategy.java

License:Open Source License

@Override
public void reportError(Parser recognizer, RecognitionException e) {
    String message = generateErrorMessage("Parse failed", recognizer);
    CompilerError error = new CompilerError(CompilerError.ErrorType.CFDG_COMPILER,
            e.getOffendingToken().getLine(), e.getOffendingToken().getCharPositionInLine(),
            e.getOffendingToken().getStartIndex(),
            recognizer.getCurrentToken().getStopIndex() - recognizer.getCurrentToken().getStartIndex(),
            message);//from  ww  w.  j a v a 2  s .  c  o m
    logger.log(Level.FINE, error.toString(), e);
    errors.add(error);
}

From source file:com.nextbreakpoint.nextfractal.contextfree.compiler.CompilerErrorStrategy.java

License:Open Source License

@Override
protected void reportInputMismatch(Parser recognizer, InputMismatchException e) {
    String message = generateErrorMessage("Input mismatch", recognizer);
    CompilerError error = new CompilerError(CompilerError.ErrorType.CFDG_COMPILER,
            e.getOffendingToken().getLine(), e.getOffendingToken().getCharPositionInLine(),
            e.getOffendingToken().getStartIndex(),
            recognizer.getCurrentToken().getStopIndex() - recognizer.getCurrentToken().getStartIndex(),
            message);//from w  w w  . j  a v a  2s.c o m
    logger.log(Level.FINE, error.toString(), e);
    errors.add(error);
}

From source file:com.nextbreakpoint.nextfractal.contextfree.compiler.CompilerErrorStrategy.java

License:Open Source License

@Override
protected void reportFailedPredicate(Parser recognizer, FailedPredicateException e) {
    String message = generateErrorMessage("Failed predicate", recognizer);
    CompilerError error = new CompilerError(CompilerError.ErrorType.CFDG_COMPILER,
            e.getOffendingToken().getLine(), e.getOffendingToken().getCharPositionInLine(),
            e.getOffendingToken().getStartIndex(),
            recognizer.getCurrentToken().getStopIndex() - recognizer.getCurrentToken().getStartIndex(),
            message);//from ww  w  . java2 s  .  c o m
    logger.log(Level.FINE, error.toString(), e);
    errors.add(error);
}

From source file:com.nextbreakpoint.nextfractal.contextfree.compiler.CompilerErrorStrategy.java

License:Open Source License

@Override
protected void reportUnwantedToken(Parser recognizer) {
    String message = generateErrorMessage("Unwanted token", recognizer);
    CompilerError error = new CompilerError(CompilerError.ErrorType.CFDG_COMPILER,
            recognizer.getCurrentToken().getLine(), recognizer.getCurrentToken().getCharPositionInLine(),
            recognizer.getCurrentToken().getStartIndex(),
            recognizer.getCurrentToken().getStopIndex() - recognizer.getCurrentToken().getStartIndex(),
            message);//from w w  w  .j a v  a 2s  . c  o m
    logger.log(Level.FINE, error.toString());
    errors.add(error);
}

From source file:com.nextbreakpoint.nextfractal.contextfree.compiler.CompilerErrorStrategy.java

License:Open Source License

@Override
protected void reportMissingToken(Parser recognizer) {
    String message = generateErrorMessage("Missing token", recognizer);
    CompilerError error = new CompilerError(CompilerError.ErrorType.CFDG_COMPILER,
            recognizer.getCurrentToken().getLine(), recognizer.getCurrentToken().getCharPositionInLine(),
            recognizer.getCurrentToken().getStartIndex(),
            recognizer.getCurrentToken().getStopIndex() - recognizer.getCurrentToken().getStartIndex(),
            message);/*  www .j a  v  a  2  s. c  om*/
    logger.log(Level.FINE, error.toString());
    errors.add(error);
}

From source file:com.nextbreakpoint.nextfractal.mandelbrot.compiler.CompilerErrorStrategy.java

License:Open Source License

@Override
public void reportError(Parser recognizer, RecognitionException e) {
    String message = generateErrorMessage("Parse failed", recognizer);
    CompilerError error = new CompilerError(CompilerError.ErrorType.M_COMPILER, e.getOffendingToken().getLine(),
            e.getOffendingToken().getCharPositionInLine(), e.getOffendingToken().getStartIndex(),
            recognizer.getCurrentToken().getStopIndex() - recognizer.getCurrentToken().getStartIndex(),
            message);/*from  w ww  .  j  av a  2  s. co m*/
    logger.log(Level.FINE, error.toString(), e);
    errors.add(error);
}

From source file:com.nextbreakpoint.nextfractal.mandelbrot.compiler.CompilerErrorStrategy.java

License:Open Source License

@Override
protected void reportInputMismatch(Parser recognizer, InputMismatchException e) {
    String message = generateErrorMessage("Input mismatch", recognizer);
    CompilerError error = new CompilerError(CompilerError.ErrorType.M_COMPILER, e.getOffendingToken().getLine(),
            e.getOffendingToken().getCharPositionInLine(), e.getOffendingToken().getStartIndex(),
            recognizer.getCurrentToken().getStopIndex() - recognizer.getCurrentToken().getStartIndex(),
            message);/*from   w ww.ja  v a2 s .  c  o m*/
    logger.log(Level.FINE, error.toString(), e);
    errors.add(error);
}