org.eclipse.xtext.xbase.conversion.XbaseQualifiedNameValueConverter Maven / Gradle / Ivy

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/*******************************************************************************
 * Copyright (c) 2012 itemis AG (http://www.itemis.eu) and others.
 * 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
 *******************************************************************************/
package org.eclipse.xtext.xbase.conversion;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.xtext.conversion.ValueConverterException;
import org.eclipse.xtext.conversion.impl.QualifiedNameValueConverter;
import org.eclipse.xtext.nodemodel.ILeafNode;
import org.eclipse.xtext.nodemodel.INode;
import org.eclipse.xtext.util.Strings;

import com.google.inject.Singleton;

/**
 * @author Holger Schill - Initial contribution and API
 */
@Singleton
public class XbaseQualifiedNameValueConverter extends QualifiedNameValueConverter {
	
	@Override
	protected String getDelegateRuleName() {
		return "ValidID";
	}
	
	@Override
	public String toValue(String string, INode node) throws ValueConverterException {
		StringBuilder buffer = new StringBuilder();
		boolean isFirst = true;
		if (node != null) {
			for(INode child: node.getAsTreeIterable()) {
				EObject grammarElement = child.getGrammarElement();
				if (isDelegateRuleCall(grammarElement) || isWildcardLiteral(grammarElement)) {
					if (!isFirst)
						buffer.append(getValueNamespaceDelimiter());
					isFirst = false;
					if (isDelegateRuleCall(grammarElement))
						for(ILeafNode leafNode :child.getLeafNodes()){
							if(!leafNode.isHidden())
								buffer.append(delegateToValue(leafNode));
						}
					else 
						buffer.append(getWildcardLiteral());
				}
			}
		} else {
			for (String segment : Strings.split(string, getStringNamespaceDelimiter())) {
				if (!isFirst)
					buffer.append(getValueNamespaceDelimiter());
				isFirst = false;
				if(getWildcardLiteral().equals(segment)) {
					buffer.append(getWildcardLiteral());
				} else {
					buffer.append((String) valueConverterService.toValue(segment, getDelegateRuleName(), null));
				}
			}
		}
		return buffer.toString();
	}
}