org.aspectj.apache.bcel.generic.LocalVariableTag Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of aspectjtools Show documentation

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.

There is a newer version: 1.9.22.1

Show newest version

/* *******************************************************************
 * Copyright (c) 2002 Contributors
 * 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
 *   Andy Clement   pushed down into bcel module
 * ******************************************************************/

package org.aspectj.apache.bcel.generic;

public final class LocalVariableTag extends Tag {
	private final String signature;
	private String name;
	private int slot;
	private final int startPosition;
	private boolean remapped = false;

	private int hashCode = 0;
	private Type type; // not always known, in which case signature has to be used

	// AMC - pr101047, two local vars with the same name can share the same slot, but must in that case
	// have different start positions.
	public LocalVariableTag(String signature, String name, int slot, int startPosition) {
		this.signature = signature;
		this.name = name;
		this.slot = slot;
		this.startPosition = startPosition;
	}

	public LocalVariableTag(Type type, String signature, String name, int slot, int startPosition) {
		this.type = type;
		this.signature = signature;
		this.name = name;
		this.slot = slot;
		this.startPosition = startPosition;
	}

	public String getName() {
		return name;
	}

	public int getSlot() {
		return slot;
	}

	public String getType() {
		return signature;
	}

	public Type getRealType() {
		return type;
	}

	public void updateSlot(int newSlot) {
		this.slot = newSlot;
		this.remapped = true;
		this.hashCode = 0;
	}

	public void setName(String name) {
		this.name = name;
		this.hashCode = 0;
	}

	public boolean isRemapped() {
		return this.remapped;
	}

	public String toString() {
		return "local " + slot + ": " + signature + " " + name;
	}

	public boolean equals(Object other) {
		if (!(other instanceof LocalVariableTag)) {
			return false;
		}
		LocalVariableTag o = (LocalVariableTag) other;
		return o.slot == slot && o.startPosition == startPosition && o.signature.equals(signature) && o.name.equals(name);
	}

	public int hashCode() {
		if (hashCode == 0) {
			int ret = signature.hashCode();
			ret = 37 * ret + name.hashCode();
			ret = 37 * ret + slot;
			ret = 37 * ret + startPosition;
			hashCode = ret;
		}
		return hashCode;
	}
}