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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) 2002 Palo Alto Research Center, Incorporated (PARC).
 * All rights reserved.
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Public License v 2.0
 * which accompanies this distribution and is available at
 * https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
 *
 * Contributors:
 *     PARC     initial implementation
 * ******************************************************************/

package org.aspectj.weaver.patterns;

import org.aspectj.weaver.IHasPosition;
import org.aspectj.weaver.UnresolvedType;

public class FormalBinding implements IHasPosition {
	private final UnresolvedType type;
	private final String name;
	private final int index;
	private final int start, end;

	public FormalBinding(UnresolvedType type, String name, int index, int start, int end) {
		this.type = type;
		this.name = name;
		this.index = index;
		this.start = start;
		this.end = end;
	}

	public FormalBinding(UnresolvedType type, int index) {
		this(type, "unknown", index, 0, 0);
	}

	public FormalBinding(UnresolvedType type, String name, int index) {
		this(type, name, index, 0, 0);
	}

	// ----

	public String toString() {
		return type.toString() + ":" + index;
	}

	public int getEnd() {
		return end;
	}

	public int getStart() {
		return start;
	}

	public int getIndex() {
		return index;
	}

	public String getName() {
		return name;
	}

	public UnresolvedType getType() {
		return type;
	}

	// ----

	public static final FormalBinding[] NONE = new FormalBinding[0];

	/**
	 * A marker class for bindings for which we want to ignore unbound issue and consider them as implicit binding - f.e. to handle
	 * JoinPoint in @AJ advices
	 *
	 * @author Alexandre Vasseur (alex AT gnilux DOT com)
	 */
	public static class ImplicitFormalBinding extends FormalBinding {
		public ImplicitFormalBinding(UnresolvedType type, String name, int index) {
			super(type, name, index);
		}
	}

}