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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) 2005, 2015 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.core.internal.filesystem;

import java.net.URI;
import org.eclipse.core.filesystem.EFS;
import org.eclipse.core.filesystem.IFileStore;
import org.eclipse.core.filesystem.IFileSystem;
import org.eclipse.core.filesystem.provider.FileSystem;
import org.eclipse.core.runtime.IPath;

/**
 * The null file system.
 * @see EFS#getNullFileSystem()
 */
public class NullFileSystem extends FileSystem {

	/**
	 * The singleton instance of this file system.
	 */
	private static IFileSystem instance;

	/**
	 * Returns the instance of this file system
	 *
	 * @return The instance of this file system.
	 */
	public static IFileSystem getInstance() {
		return instance;
	}

	/**
	 * Creates the null file system.
	 */
	public NullFileSystem() {
		super();
		instance = this;
	}

	@Override
	public IFileStore getStore(IPath path) {
		return new NullFileStore(path);
	}

	@Override
	public IFileStore getStore(URI uri) {
		return new NullFileStore(IPath.fromOSString(uri.getPath()));
	}
}