LanguageSetup.java

/*
Copyright (c) 2009 Andr� Arnold.
All rights reserved. This program and the accompanying materials
are made available under the terms of the Eclipse Public License v1.0
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/epl-v10.html

Contributors:
    Andr� Arnold - initial API and implementation
 */
package org.eclipse.xtend.middleend;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.emf.mwe.core.WorkflowContext;
import org.eclipse.emf.mwe.core.issues.Issues;
import org.eclipse.emf.mwe.core.lib.AbstractWorkflowComponent;
import org.eclipse.emf.mwe.core.monitor.ProgressMonitor;
import org.eclipse.xtend.middleend.plugins.LanguageSpecificMiddleEndFactory;

public class LanguageSetup extends AbstractWorkflowComponent {
	
	private final List<String> _middleEndFactories = new ArrayList<String>();
	
	public void addLanguageContributor (String contributorClassName) {
		_middleEndFactories.add(contributorClassName);
	}
	
	public void addCompiledFunctionContributor (String contributorClassName) {
		_middleEndFactories.add(contributorClassName);
	}
	
	@SuppressWarnings("unchecked")
	@Override
	protected void invokeInternal(WorkflowContext ctx, ProgressMonitor monitor,
			Issues issues) {
		for (String _middleEndFactoryClassName : _middleEndFactories) {
			final Class<? extends LanguageSpecificMiddleEndFactory> middleEndFactory;
			try {
				middleEndFactory = (Class<? extends LanguageSpecificMiddleEndFactory>) Class.forName(_middleEndFactoryClassName);
				LanguageContributor.INSTANCE.addLanguageContribution(middleEndFactory);
			} catch (ClassNotFoundException e) {
				issues.addError("The class " + _middleEndFactoryClassName + " has not been found");
				
			} catch (ClassCastException cce) {
				issues.addError("The class " +_middleEndFactoryClassName + " is not a language contributor");
			}
				
		}
	}

	public void checkConfiguration(Issues issues) {
		if (_middleEndFactories.isEmpty())
			issues.addError ("No LanguageContributors defined");
	}

}