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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) 2009, 2014 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
 *     James Blackburn - Fix for bug 266712
 *******************************************************************************/
package org.eclipse.core.internal.resources;

import java.io.InputStream;
import java.net.URI;
import org.eclipse.core.filesystem.*;
import org.eclipse.core.filesystem.provider.FileInfo;
import org.eclipse.core.filesystem.provider.FileStore;
import org.eclipse.core.runtime.*;

/**
 * A file store representing a virtual resource.
 * A virtual resource always exists and has no children.
 */
public class VirtualFileStore extends FileStore {
	private final URI location;

	public VirtualFileStore(URI location) {
		this.location = location;
	}

	@Override
	public String[] childNames(int options, IProgressMonitor monitor) {
		return FileStore.EMPTY_STRING_ARRAY;
	}

	@Override
	public IFileInfo fetchInfo(int options, IProgressMonitor monitor) {
		FileInfo result = new FileInfo();
		result.setDirectory(true);
		result.setExists(true);
		result.setLastModified(1);//last modified of zero indicates non-existence
		return result;
	}

	@Override
	public void delete(int options, IProgressMonitor monitor) {
		//nothing to do - virtual resources don't exist in any physical file system
	}

	@Override
	public IFileStore getChild(String name) {
		return EFS.getNullFileSystem().getStore(new Path(name).makeAbsolute());
	}

	@Override
	public String getName() {
		return "virtual"; //$NON-NLS-1$
	}

	@Override
	public IFileStore getParent() {
		return null;
	}

	@Override
	public void move(IFileStore destination, int options, IProgressMonitor monitor) throws CoreException {
		destination.mkdir(EFS.NONE, monitor);
	}

	@Override
	public InputStream openInputStream(int options, IProgressMonitor monitor) {
		return null;
	}

	@Override
	public URI toURI() {
		return location;
	}
}