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The AspectJ matcher can be used for matching pointcuts independently of any AspectJ compilation or weaving steps. Most notably, this can be used by frameworks such as Spring AOP which utilise the @AspectJ pointcut syntax but implement aspect weaving in a way independent of AspectJ, e.g. using dynamic proxies.

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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 abstract class AnnotationValue {

	protected int valueKind;

	public static final int STRING = 's';
	public static final int ENUM_CONSTANT = 'e';
	public static final int CLASS = 'c';
	public static final int ANNOTATION = '@';
	public static final int ARRAY = '[';

	public static final int PRIMITIVE_INT = 'I';
	public static final int PRIMITIVE_BYTE = 'B';
	public static final int PRIMITIVE_CHAR = 'C';
	public static final int PRIMITIVE_DOUBLE = 'D';
	public static final int PRIMITIVE_FLOAT = 'F';
	public static final int PRIMITIVE_LONG = 'J';
	public static final int PRIMITIVE_SHORT = 'S';
	public static final int PRIMITIVE_BOOLEAN = 'Z';

	public abstract String stringify();

	public AnnotationValue(int kind) {
		valueKind = kind;
	}

	public static String whatKindIsThis(int kind) {
		switch (kind) {
		case PRIMITIVE_BYTE: // byte
			return "byte";
		case PRIMITIVE_CHAR: // char
			return "char";
		case PRIMITIVE_DOUBLE: // double
			return "double";
		case PRIMITIVE_FLOAT: // float
			return "float";
		case PRIMITIVE_INT: // int
			return "int";
		case PRIMITIVE_LONG: // long
			return "long";
		case PRIMITIVE_SHORT: // short
			return "short";
		case PRIMITIVE_BOOLEAN: // boolean
			return "boolean";
		case 's': // String
			return "string";
		case 'e': // Enum constant
			return "enum";
		case 'c': // Class
			return "class";
		case '@': // Annotation
			return "annotation";
		case '[': // Array
			return "array";
		default:
			throw new RuntimeException("Dont know what this is : " + kind);
		}
	}
}