Examples with LexerNoViableAltException org.antlr.v4.runtime.LexerNoViableAltException used on opensource projects

Example 6 with LexerNoViableAltException

use of org.antlr.v4.runtime.LexerNoViableAltException in project lucene-solr by apache.

the class JavascriptErrorHandlingLexer method recover.

/**
   * Ensures the ANTLR lexer will throw an exception after the first error
   * @param lnvae the lexer exception
   */
@Override
public void recover(LexerNoViableAltException lnvae) {
    CharStream charStream = lnvae.getInputStream();
    int startIndex = lnvae.getStartIndex();
    String text = charStream.getText(Interval.of(startIndex, charStream.index()));
    ParseException parseException = new ParseException("unexpected character '" + getErrorDisplay(text) + "'" + " on line (" + _tokenStartLine + ") position (" + _tokenStartCharPositionInLine + ")", _tokenStartCharIndex);
    parseException.initCause(lnvae);
    throw new RuntimeException(parseException);
}

Example 7 with LexerNoViableAltException

use of org.antlr.v4.runtime.LexerNoViableAltException in project groovy by apache.

the class SmartDocumentFilter method parseDocument.

private void parseDocument() throws BadLocationException {
    GroovyLangLexer lexer;
    try {
        lexer = createLexer(styledDocument.getText(0, styledDocument.getLength()));
    } catch (IOException e) {
        e.printStackTrace();
        this.latest = false;
        return;
    }
    CommonTokenStream tokenStream = new CommonTokenStream(lexer);
    try {
        tokenStream.fill();
    } catch (LexerNoViableAltException | GroovySyntaxError e) {
        // ignore
        this.latest = false;
        return;
    } catch (Exception e) {
        e.printStackTrace();
        this.latest = false;
        return;
    }
    List<Token> tokenList = tokenStream.getTokens();
    List<Token> tokenListToRender;
    try {
        tokenListToRender = findTokensToRender(tokenList);
    } finally {
        this.setRenderRange(null);
    }
    for (Token token : tokenListToRender) {
        int tokenType = token.getType();
        if (EOF == tokenType) {
            continue;
        }
        int tokenStartIndex = token.getStartIndex();
        int tokenStopIndex = token.getStopIndex();
        int tokenLength = tokenStopIndex - tokenStartIndex + 1;
        styledDocument.setCharacterAttributes(tokenStartIndex, tokenLength, findStyleByTokenType(tokenType), true);
        if (GStringBegin == tokenType || GStringPart == tokenType) {
            styledDocument.setCharacterAttributes(tokenStartIndex + tokenLength - 1, 1, defaultStyle, true);
        }
    }
    this.latestTokenList = tokenList;
    this.latest = true;
}