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The AspectJ weaver applies aspects to Java classes. It can be used as a Java agent in order to apply load-time weaving (LTW) during class-loading and also contains the AspectJ runtime classes.

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/* *******************************************************************
 * Copyright (c) 2006 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:
 *     Andy Clement IBM     initial implementation
 * ******************************************************************/
package org.aspectj.weaver;

public class SimpleAnnotationValue extends AnnotationValue {

	public SimpleAnnotationValue(int kind) {
		super(kind);
	}

	public SimpleAnnotationValue(int kind, Object value) {
		super(kind);
		switch (kind) {
		case AnnotationValue.PRIMITIVE_BYTE:
			theByte = (Byte) value;
			break;
		case AnnotationValue.PRIMITIVE_CHAR:
			theChar = (Character) value;
			break;
		case AnnotationValue.PRIMITIVE_INT:
			theInt = (Integer) value;
			break;
		case AnnotationValue.STRING:
			theString = (String) value;
			break;
		case AnnotationValue.PRIMITIVE_DOUBLE:
			theDouble = (Double) value;
			break;
		case AnnotationValue.PRIMITIVE_FLOAT:
			theFloat = (Float) value;
			break;
		case AnnotationValue.PRIMITIVE_LONG:
			theLong = (Long) value;
			break;
		case AnnotationValue.PRIMITIVE_SHORT:
			theShort = (Short) value;
			break;
		case AnnotationValue.PRIMITIVE_BOOLEAN:
			theBoolean = (Boolean) value;
			break;
		default:
			throw new BCException("Not implemented for this kind: " + whatKindIsThis(kind));
		}
	}

	private byte theByte;
	private char theChar;
	private int theInt;
	private String theString;
	private double theDouble;
	private float theFloat;
	private long theLong;
	private short theShort;
	private boolean theBoolean;

	public void setValueString(String s) {
		theString = s;
	}

	public void setValueByte(byte b) {
		theByte = b;
	}

	public void setValueChar(char c) {
		theChar = c;
	}

	public void setValueInt(int i) {
		theInt = i;
	}

	@Override
	public String stringify() {
		switch (valueKind) {
		case 'B': // byte
			return Byte.toString(theByte);
		case 'C': // char
			return Character.toString(theChar);
		case 'D': // double
			return Double.toString(theDouble);
		case 'F': // float
			return Float.toString(theFloat);
		case 'I': // int
			return Integer.toString(theInt);
		case 'J': // long
			return Long.toString(theLong);
		case 'S': // short
			return Short.toString(theShort);
		case 'Z': // boolean
			return Boolean.valueOf(theBoolean).toString();
		case 's': // String
			return theString;
		default:
			throw new BCException("Do not understand this kind: " + valueKind);
		}
	}

	@Override
	public String toString() {
		return stringify();
	}

}