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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

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/*******************************************************************************
 * Copyright (c) 2008, 2010 Freescale Semiconductor and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     Freescale Semiconductor - initial API and implementation
 *     IBM Corporation - ongoing development
 *******************************************************************************/
package org.eclipse.core.resources.variableresolvers;

import org.eclipse.core.resources.IResource;

/**
 * An interface that variable providers should implement in order
 * to extends the default path variable list used to resolve relative
 * locations of linked resources.
 * @since 3.6
 */
public abstract class PathVariableResolver {

	/**
	 * This method can return a list of possible variables resolved by
	 * this resolver.
	 * 
	 * This default implementation always returns null. Subclasses
	 * should override to provide custom extensions.
	 * 
	 *
	 * @param variable
	 *            The current variable name.
	 * @param resource
	 *            The resource that the variable is being resolved for.
	 * @return the list of supported variables
	 */
	public String[] getVariableNames(String variable, IResource resource) {
		return null;
	}

	/**
	 * Returns a variable value
	 *
	 * @param variable
	 *            The current variable name.
	 * @param resource
	 *            The resource that the variable is being resolved for.
	 * @return the variable value.
	 */
	public abstract String getValue(String variable, IResource resource);
}