Examples with IRootConsumerListener org.eclipse.xtext.parser.packrat.consumers.IRootConsumerListener used on opensource projects

Example 1 with IRootConsumerListener

use of org.eclipse.xtext.parser.packrat.consumers.IRootConsumerListener in project xtext-core by eclipse.

the class AbstractPackratParser method parse.

protected final IParseResult parse(INonTerminalConsumer consumer) {
    if (activeMarker != null)
        throw new IllegalStateException("cannot parse now. Active marker is already assigned.");
    IMarker rootMarker = mark();
    IRootConsumerListener listener = new RootConsumerListener();
    try {
        consumer.consumeAsRoot(listener);
        IParseResult result = getParseResultFactory().createParseResult(activeMarker, input);
        rootMarker.commit();
        if (activeMarker != null)
            throw new IllegalStateException("cannot finish parse: active marker is still present.");
        return result;
    } catch (Exception e) {
        throw new WrappedException(e);
    }
}