Examples with XQueryLexer org.exist.xquery.parser.XQueryLexer used on opensource projects

Example 6 with XQueryLexer

use of org.exist.xquery.parser.XQueryLexer in project exist by eXist-db.

the class AbstractSource method getModuleDecl.

/**
 * Check if the source is an XQuery module. If yes, return a QName containing
 * the module prefix as local name and the module namespace as namespace URI.
 *
 * @param is the input stream
 * @return QName describing the module namespace or null if the source is not
 * a module.
 */
protected static QName getModuleDecl(final InputStream is) {
    final XQueryLexer lexer = new XQueryLexer(null, new InputStreamReader(is));
    final DeclScanner scanner = new DeclScanner(lexer);
    try {
        scanner.versionDecl();
    } catch (final RecognitionException | XPathException | TokenStreamException e) {
    // Nothing to do
    }
    if (scanner.getNamespace() != null) {
        return new QName(scanner.getPrefix(), scanner.getNamespace());
    }
    return null;
}

Example 7 with XQueryLexer

use of org.exist.xquery.parser.XQueryLexer in project exist by eXist-db.

the class SortedNodeSet method addAll.

@Override
public void addAll(final NodeSet other) {
    final long start = System.currentTimeMillis();
    final MutableDocumentSet docs = new DefaultDocumentSet();
    for (final NodeProxy p : other) {
        docs.add(p.getOwnerDocument());
    }
    // TODO(pkaminsk2): why replicate XQuery.compile here?
    try (final DBBroker broker = pool.get(Optional.ofNullable(user))) {
        final XQueryContext context = new XQueryContext(pool);
        final XQueryLexer lexer = new XQueryLexer(context, new StringReader(sortExpr));
        final XQueryParser parser = new XQueryParser(lexer);
        final XQueryTreeParser treeParser = new XQueryTreeParser(context);
        parser.xpath();
        if (parser.foundErrors()) {
            // TODO : error ?
            LOG.debug(parser.getErrorMessage());
        }
        final AST ast = parser.getAST();
        LOG.debug("generated AST: {}", ast.toStringTree());
        final PathExpr expr = new PathExpr(context);
        treeParser.xpath(ast, expr);
        if (treeParser.foundErrors()) {
            LOG.debug(treeParser.getErrorMessage());
        }
        expr.analyze(new AnalyzeContextInfo());
        for (final SequenceIterator i = other.iterate(); i.hasNext(); ) {
            final NodeProxy p = (NodeProxy) i.nextItem();
            final IteratorItem item = new IteratorItem(p, expr);
            list.add(item);
        }
    } catch (final RecognitionException | TokenStreamException re) {
        // TODO : throw exception ! -pb
        LOG.debug(re);
    } catch (final EXistException | XPathException e) {
        // TODO : throw exception ! -pb
        LOG.debug("Exception during sort", e);
    }
    LOG.debug("sort-expression found {} in {}ms.", list.size(), System.currentTimeMillis() - start);
}