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/*******************************************************************************
 * Copyright (c) 2002, 2006 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 Rational Software - Initial API and implementation
 *******************************************************************************/
package org.eclipse.cdt.core.parser;

import org.eclipse.core.resources.IResource;


public interface IScannerInfoProvider {

	/**
	 * The receiver will answer the current state of the build information for the 
	 * resource specified in the argument.
	 */
	public IScannerInfo getScannerInformation(IResource resource); 	

	/**
	 * The receiver will register the listener specified in the argument
	 * to receive change notifications when the information for the 
	 * <code>IResource</code> it is responsible for changes. 
	 *  
	 * @param listener
	 */
	public void subscribe(IResource resource, IScannerInfoChangeListener listener);
	
	/**
	 * The receiver will no longer notify the listener specified in 
	 * the argument when information about the reource it is responsible 
	 * for changes.
	 * 
	 * @param listener
	 */
	public void unsubscribe(IResource resource, IScannerInfoChangeListener listener);
}

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