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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, 2009 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.aspectj.org.eclipse.jdt.internal.core.util;

import org.aspectj.org.eclipse.jdt.core.util.ClassFormatException;
import org.aspectj.org.eclipse.jdt.core.util.IConstantPool;
import org.aspectj.org.eclipse.jdt.core.util.IConstantPoolConstant;
import org.aspectj.org.eclipse.jdt.core.util.IConstantPoolEntry;
import org.aspectj.org.eclipse.jdt.core.util.ILocalVariableTableEntry;

/**
 * Default implementation of ILocalVariableTableEntry
 */
public class LocalVariableTableEntry extends ClassFileStruct implements ILocalVariableTableEntry {

	private final int startPC;
	private final int length;
	private final int nameIndex;
	private final int descriptorIndex;
	private final char[] name;
	private final char[] descriptor;
	private final int index;

	/**
	 * Constructor for LocalVariableTableEntry.
	 */
	public LocalVariableTableEntry(
		byte[] classFileBytes,
		IConstantPool constantPool,
		int offset) throws ClassFormatException {
			this.startPC = u2At(classFileBytes, 0, offset);
			this.length = u2At(classFileBytes, 2, offset);
			this.nameIndex = u2At(classFileBytes, 4, offset);
			this.descriptorIndex = u2At(classFileBytes, 6, offset);
			this.index = u2At(classFileBytes, 8, offset);
			IConstantPoolEntry constantPoolEntry = constantPool.decodeEntry(this.nameIndex);
			if (constantPoolEntry.getKind() != IConstantPoolConstant.CONSTANT_Utf8) {
				throw new ClassFormatException(ClassFormatException.INVALID_CONSTANT_POOL_ENTRY);
			}
			this.name = constantPoolEntry.getUtf8Value();
			constantPoolEntry = constantPool.decodeEntry(this.descriptorIndex);
			if (constantPoolEntry.getKind() != IConstantPoolConstant.CONSTANT_Utf8) {
				throw new ClassFormatException(ClassFormatException.INVALID_CONSTANT_POOL_ENTRY);
			}
			this.descriptor = constantPoolEntry.getUtf8Value();
		}

	/**
	 * @see ILocalVariableTableEntry#getStartPC()
	 */
	@Override
	public int getStartPC() {
		return this.startPC;
	}

	/**
	 * @see ILocalVariableTableEntry#getLength()
	 */
	@Override
	public int getLength() {
		return this.length;
	}

	/**
	 * @see ILocalVariableTableEntry#getNameIndex()
	 */
	@Override
	public int getNameIndex() {
		return this.nameIndex;
	}

	/**
	 * @see ILocalVariableTableEntry#getDescriptorIndex()
	 */
	@Override
	public int getDescriptorIndex() {
		return this.descriptorIndex;
	}

	/**
	 * @see ILocalVariableTableEntry#getIndex()
	 */
	@Override
	public int getIndex() {
		return this.index;
	}

	/**
	 * @see ILocalVariableTableEntry#getName()
	 */
	@Override
	public char[] getName() {
		return this.name;
	}

	/**
	 * @see ILocalVariableTableEntry#getDescriptor()
	 */
	@Override
	public char[] getDescriptor() {
		return this.descriptor;
	}

}