org.eclipse.xtext.util.PolymorphicDispatcher.ErrorHandler Java Examples

The following examples show how to use org.eclipse.xtext.util.PolymorphicDispatcher.ErrorHandler. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: AbstractJavaBasedContentProposalProvider.java    From xtext-eclipse with Eclipse Public License 2.0 6 votes vote down vote up 
protected void invokeMethod(String methodName, ICompletionProposalAcceptor acceptor, Object... params) {
	PolymorphicDispatcher<Void> dispatcher = dispatchers.get(methodName);
	if (dispatcher == null) {
		ErrorHandler<Void> errorHandler = WarningErrorHandler.get(log);
		dispatcher = new PolymorphicDispatcher<Void>(methodName, params.length + 1, params.length + 1,
				Collections.singletonList(this), errorHandler) {
			@Override
			public Class<?> getDefaultClass(int paramIndex) {
				if (paramIndex == 0)
					return EObject.class;
				return super.getDefaultClass(paramIndex);
			}
		};
		dispatchers.put(methodName, dispatcher);
	}
	Object[] paramAsArray = new Object[params.length + 1];
	System.arraycopy(params, 0, paramAsArray, 0, params.length);
	paramAsArray[params.length] = acceptor;
	if (announceProcessing(Lists.asList(methodName, paramAsArray))) {
		dispatcher.invoke(paramAsArray);
	}
}
Example #2
Source File: XbaseDeclarativeHoverSignatureProvider.java    From xtext-eclipse with Eclipse Public License 2.0 6 votes vote down vote up 
protected String internalGetSignature(EObject object, boolean typeAtEnd) {
	PolymorphicDispatcher<String> polymorphicDispatcher = new PolymorphicDispatcher<String>("_signature", 2, 2,
			Collections.singletonList(this), new ErrorHandler<String>() {
				@Override
				public String handle(Object[] params, Throwable throwable) {
					return null;
				}
			});
	String result = polymorphicDispatcher.invoke(object, typeAtEnd);
	if (result != null)
		return result;
	if (object instanceof JvmIdentifiableElement) {
		return getLabel(object);
	}
	return getLabelForNonXbaseElement(object);
}
Example #3
Source File: SARLLabelProvider.java    From sarl with Apache License 2.0 5 votes vote down vote up 
/** Constructor.
 * @param delegate the original provider.
 */
@Inject
public SARLLabelProvider(AdapterFactoryLabelProvider delegate) {
	super(delegate);
	this.imageDescriptorDispatcher = new PolymorphicDispatcher<>(
			"imageDescriptor", //$NON-NLS-1$
			1, 1,
			Collections.singletonList(this),
			new ErrorHandler<ImageDescriptor>() {
				@Override
				public ImageDescriptor handle(Object[] params, Throwable exception) {
					return handleImageDescriptorError(params, exception);
				}
			});
}