Examples with PathPatternLexer com.inova8.pathql.pathPattern.PathPatternLexer used on opensource projects

Example 1 with PathPatternLexer

use of com.inova8.pathql.pathPattern.PathPatternLexer in project com.inova8.intelligentgraph by peterjohnlawrence.

the class PathPatternQueryExpressionTests method prepareElement.

/**
 * Prepare element.
 *
 * @param input the input
 * @return the path element
 * @throws RecognitionException the recognition exception
 */
private PathElement prepareElement(CharStream input) throws RecognitionException {
    PathPatternLexer lexer = new PathPatternLexer(input);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    PathPatternParser parser = new PathPatternParser(tokens);
    PathPatternContext pathPatternTree = parser.pathPattern();
    PathPatternVisitor pathPatternVisitor = new PathPatternVisitor(repositoryContext);
    PathElement element = pathPatternVisitor.visit(pathPatternTree);
    element.indexVisitor(null, 0, null);
    element.setIterations(Iterations.create(element));
    // element.setPathBindings(PathBindings.create(element));
    return element;
}

Example 2 with PathPatternLexer

use of com.inova8.pathql.pathPattern.PathPatternLexer in project com.inova8.intelligentgraph by peterjohnlawrence.

the class PathPatternTests method prepareElement.

/**
 * Prepare element.
 *
 * @param input the input
 * @return the path element
 * @throws RecognitionException the recognition exception
 */
private PathElement prepareElement(CharStream input) throws RecognitionException {
    PathPatternLexer lexer = new PathPatternLexer(input);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    PathPatternParser parser = new PathPatternParser(tokens);
    PathPatternContext pathPatternTree = parser.pathPattern();
    PathPatternVisitor pathPatternVisitor = new PathPatternVisitor(repositoryContext);
    PathElement element = pathPatternVisitor.visit(pathPatternTree);
    return element;
}

Example 3 with PathPatternLexer

use of com.inova8.pathql.pathPattern.PathPatternLexer in project com.inova8.intelligentgraph by peterjohnlawrence.

the class PathParser method parseIriRef.

/**
 * Parses the iri ref.
 *
 * @param repositoryContext the repository context
 * @param uriPattern the uri pattern
 * @return the iri ref value element
 * @throws RecognitionException the recognition exception
 * @throws PathPatternException the path pattern exception
 */
public static IriRefValueElement parseIriRef(RepositoryContext repositoryContext, String uriPattern) throws RecognitionException, PathPatternException {
    try {
        pathPatternVisitor = new PathPatternVisitor(repositoryContext);
        CharStream input = CharStreams.fromString(uriPattern);
        PathPatternLexer lexer = new PathPatternLexer(input);
        CommonTokenStream tokens = new CommonTokenStream(lexer);
        PathPatternParser parser = new PathPatternParser(tokens);
        IriRefContext pathPatternTree = parser.iriRef();
        PathElement iriRefValueElement = pathPatternVisitor.visit(pathPatternTree);
        return (IriRefValueElement) iriRefValueElement;
    } catch (Exception qe) {
        throw new PathPatternException(qe.getMessage(), null);
    }
}

Example 4 with PathPatternLexer

use of com.inova8.pathql.pathPattern.PathPatternLexer in project com.inova8.intelligentgraph by peterjohnlawrence.

the class PathParser method parsePredicate.

/**
 * Parses the predicate.
 *
 * @param repositoryContext the repository context
 * @param uriPattern the uri pattern
 * @return the predicate element
 * @throws RecognitionException the recognition exception
 * @throws PathPatternException the path pattern exception
 */
public static PredicateElement parsePredicate(RepositoryContext repositoryContext, String uriPattern) throws RecognitionException, PathPatternException {
    pathPatternVisitor = new PathPatternVisitor(repositoryContext);
    CharStream input = CharStreams.fromString(uriPattern);
    PathPatternLexer lexer = new PathPatternLexer(input);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    PathPatternParser parser = new PathPatternParser(tokens);
    PathEltOrInverseContext pathPatternTree = parser.pathEltOrInverse();
    PathElement iriRefValueElement = pathPatternVisitor.visit(pathPatternTree);
    return (PredicateElement) iriRefValueElement;
}

Example 5 with PathPatternLexer

use of com.inova8.pathql.pathPattern.PathPatternLexer in project com.inova8.intelligentgraph by peterjohnlawrence.

the class PathParser method pathPatternParser.

/**
 * Path pattern parser.
 *
 * @param pathPattern the path pattern
 * @param pathPatternVisitor the path pattern visitor
 * @return the path element
 * @throws RecognitionException the recognition exception
 * @throws PathPatternException the path pattern exception
 */
private static PathElement pathPatternParser(String pathPattern, PathPatternVisitor pathPatternVisitor) throws RecognitionException, PathPatternException {
    PathErrorListener errorListener = new PathErrorListener(pathPattern);
    CharStream input = CharStreams.fromString(pathPattern);
    PathPatternLexer lexer = new PathPatternLexer(input);
    lexer.removeErrorListeners();
    lexer.addErrorListener(errorListener);
    CommonTokenStream tokens = new CommonTokenStream(lexer);
    PathPatternParser parser = new PathPatternParser(tokens);
    parser.removeErrorListeners();
    parser.addErrorListener(errorListener);
    QueryStringContext queryStringTree = parser.queryString();
    PathElement pathElement = pathPatternVisitor.visit(queryStringTree);
    if (errorListener.toString() != null) {
        if (parser.getNumberOfSyntaxErrors() == 0) {
            // Lexer only error
            throw new PathPatternException(errorListener.toString(), ErrorCode.LEXER);
        } else {
            // Parser error
            throw new PathPatternException(errorListener.toString(), ErrorCode.PARSER);
        }
    }
    pathElement.setPathPattern(pathPattern);
    pathElement.indexVisitor(null, 0, null);
    pathElement.setIterations(Iterations.create(pathElement));
    // pathElement.setPathBindings(PathBindings.create(pathElement));
    return pathElement;
}