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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) 2000, 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.events;

import java.util.EventObject;
import org.eclipse.core.resources.IPathVariableChangeEvent;
import org.eclipse.core.resources.IPathVariableManager;
import org.eclipse.core.runtime.IPath;

/**
 * Describes a change in path variable. Core's default implementation for the
 * IPathVariableChangeEvent interface.
 */
public class PathVariableChangeEvent extends EventObject implements IPathVariableChangeEvent {
	private static final long serialVersionUID = 1L;

	/**
	 * The name of the changed variable.
	 */
	private String variableName;

	/**
	 * The value of the changed variable (may be null).
	 */
	private IPath value;

	/** The event type. */
	private int type;

	/**
	 * Constructor for this class.
	 */
	public PathVariableChangeEvent(IPathVariableManager source, String variableName, IPath value, int type) {
		super(source);
		if (type < VARIABLE_CHANGED || type > VARIABLE_DELETED)
			throw new IllegalArgumentException("Invalid event type: " + type); //$NON-NLS-1$
		this.variableName = variableName;
		this.value = value;
		this.type = type;
	}

	/**
	 * @see org.eclipse.core.resources.IPathVariableChangeEvent#getValue()
	 */
	@Override
	public IPath getValue() {
		return value;
	}

	/**
	 * @see org.eclipse.core.resources.IPathVariableChangeEvent#getVariableName()
	 */
	@Override
	public String getVariableName() {
		return variableName;
	}

	/**
	 * @see org.eclipse.core.resources.IPathVariableChangeEvent#getType()
	 */
	@Override
	public int getType() {
		return type;
	}

	/**
	 * Return a string representation of this object.
	 */
	@Override
	public String toString() {
		String[] typeStrings = {"VARIABLE_CHANGED", "VARIABLE_CREATED", "VARIABLE_DELETED"}; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
		StringBuilder sb = new StringBuilder(getClass().getName());
		sb.append("[variable = "); //$NON-NLS-1$
		sb.append(variableName);
		sb.append(", type = "); //$NON-NLS-1$
		sb.append(typeStrings[type - 1]);
		if (type != VARIABLE_DELETED) {
			sb.append(", value = "); //$NON-NLS-1$
			sb.append(value);
		}
		sb.append("]"); //$NON-NLS-1$
		return sb.toString();
	}

}