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
/*******************************************************************************
 * 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.eclipse.jdt.internal.compiler.classfmt;

import org.eclipse.jdt.internal.compiler.env.IBinaryNestedType;

Describes one entry in the classes table of the InnerClasses attribute.
See the inner class specification (The class file attribute "InnerClasses").
/**
 * Describes one entry in the classes table of the InnerClasses attribute.
 * See the inner class specification (The class file attribute "InnerClasses").
 */

public class InnerClassInfo extends ClassFileStruct implements IBinaryNestedType {
	int innerClassNameIndex = -1;
	int outerClassNameIndex = -1;
	int innerNameIndex = -1;
	private char[] innerClassName;
	private char[] outerClassName;
	private char[] innerName;
	private int accessFlags = -1;
	private boolean readInnerClassName;
	private boolean readOuterClassName;
	private boolean readInnerName;

public InnerClassInfo(byte classFileBytes[], int offsets[], int offset) {
	super(classFileBytes, offsets, offset);
	this.innerClassNameIndex = u2At(0);
	this.outerClassNameIndex = u2At(2);
	this.innerNameIndex = u2At(4);
}

@Override
public char[] getEnclosingTypeName() {
	if (!this.readOuterClassName) {
		// read outer class name
		if (this.outerClassNameIndex != 0) {
			int utf8Offset =
				this.constantPoolOffsets[u2At(
					this.constantPoolOffsets[this.outerClassNameIndex] - this.structOffset + 1)]
					- this.structOffset;
			this.outerClassName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1));
		}
		this.readOuterClassName = true;

	}
	return this.outerClassName;
}

@Override
public int getModifiers() {
	if (this.accessFlags == -1) {
		// read access flag
		this.accessFlags = u2At(6);
	}
	return this.accessFlags;
}

@Override
public char[] getName() {
	if (!this.readInnerClassName) {
		// read the inner class name
		if (this.innerClassNameIndex != 0) {
			int  classOffset = this.constantPoolOffsets[this.innerClassNameIndex] - this.structOffset;
			int utf8Offset = this.constantPoolOffsets[u2At(classOffset + 1)] - this.structOffset;
			this.innerClassName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1));
		}
		this.readInnerClassName = true;
	}
	return this.innerClassName;
}
Answer the source name of the member type.
For example, p1.p2.A.M is M.
Returns:
char[]/**
 * Answer the source name of the member type.
 *
 * For example, p1.p2.A.M is M.
 * @return char[]
 */
public char[] getSourceName() {
	if (!this.readInnerName) {
		if (this.innerNameIndex != 0) {
			int utf8Offset = this.constantPoolOffsets[this.innerNameIndex] - this.structOffset;
			this.innerName = utf8At(utf8Offset + 3, u2At(utf8Offset + 1));
		}
		this.readInnerName = true;
	}
	return this.innerName;
}
Answer the string representation of the receiver
Returns:
java.lang.String/**
 * Answer the string representation of the receiver
 * @return java.lang.String
 */
@Override
public String toString() {
	StringBuffer buffer = new StringBuffer();
	if (getName() != null) {
		buffer.append(getName());
	}
	buffer.append("\n"); //$NON-NLS-1$
	if (getEnclosingTypeName() != null) {
		buffer.append(getEnclosingTypeName());
	}
	buffer.append("\n"); //$NON-NLS-1$
	if (getSourceName() != null) {
		buffer.append(getSourceName());
	}
	return buffer.toString();
}
This method is used to fully initialize the contents of the receiver. All methodinfos, fields infos
will be therefore fully initialized and we can get rid of the bytes.
/**
 * This method is used to fully initialize the contents of the receiver. All methodinfos, fields infos
 * will be therefore fully initialized and we can get rid of the bytes.
 */
void initialize() {
	getModifiers();
	getName();
	getSourceName();
	getEnclosingTypeName();
	reset();
}
}