/*******************************************************************************
 * Copyright (c) 2000, 2010 IBM Corporation 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
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.corext.util;

import java.util.Collection;

import org.eclipse.core.runtime.Assert;

import org.eclipse.jdt.core.IAccessRule;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.search.TypeNameMatch;
import org.eclipse.jdt.core.search.TypeNameMatchRequestor;

public class TypeNameMatchCollector extends TypeNameMatchRequestor {

	private final Collection<TypeNameMatch> fCollection;

	public TypeNameMatchCollector(Collection<TypeNameMatch> collection) {
		Assert.isNotNull(collection);
		fCollection= collection;
	}

	private boolean inScope(TypeNameMatch match) {
		if (TypeFilter.isFiltered(match))
			return false;
		
		int accessibility= match.getAccessibility();
		switch (accessibility) {
			case IAccessRule.K_NON_ACCESSIBLE:
				return JavaCore.DISABLED.equals(JavaCore.getOption(JavaCore.CODEASSIST_FORBIDDEN_REFERENCE_CHECK));
			case IAccessRule.K_DISCOURAGED:
				return JavaCore.DISABLED.equals(JavaCore.getOption(JavaCore.CODEASSIST_DISCOURAGED_REFERENCE_CHECK));
			default:
				return true;
		}
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jdt.core.search.TypeNameMatchRequestor#acceptTypeNameMatch(org.eclipse.jdt.core.search.TypeNameMatch)
	 */
	@Override
	public void acceptTypeNameMatch(TypeNameMatch match) {
		if (inScope(match)) {
			fCollection.add(match);
		}
	}

}