/**
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 */
package org.thingml.xtext.ide.contentassist.antlr;

import java.util.Collection;
import java.util.Collections;
import org.eclipse.xtext.AbstractRule;
import org.eclipse.xtext.ide.editor.contentassist.antlr.FollowElement;
import org.eclipse.xtext.ide.editor.contentassist.antlr.internal.AbstractInternalContentAssistParser;
import org.eclipse.xtext.ide.editor.partialEditing.IPartialEditingContentAssistParser;
import org.eclipse.xtext.util.PolymorphicDispatcher;

public class PartialThingMLContentAssistParser extends ThingMLParser implements IPartialEditingContentAssistParser {

	private AbstractRule rule;

	@Override
	public void initializeFor(AbstractRule rule) {
		this.rule = rule;
	}

	@Override
	protected Collection<FollowElement> getFollowElements(AbstractInternalContentAssistParser parser) {
		if (rule == null || rule.eIsProxy())
			return Collections.emptyList();
		String methodName = "entryRule" + rule.getName();
		PolymorphicDispatcher<Collection<FollowElement>> dispatcher = 
			new PolymorphicDispatcher<Collection<FollowElement>>(methodName, 0, 0, Collections.singletonList(parser));
		dispatcher.invoke();
		return parser.getFollowElements();
	}

}