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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) 2002 Palo Alto Research Center, Incorporated (PARC).
 * 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
 * ******************************************************************/


package org.aspectj.weaver.patterns;

import org.aspectj.weaver.IHasPosition;

public interface IToken extends IHasPosition {
	IToken EOF = BasicToken.makeOperator("", 0, 0);

	/**
	 * Returns the string value of this token.
	 *
	 * If isIdentifier is false, then this string must be intern'd
	 * so that == matching can be used.
	 *
	 * If isIdentifier is true, interning is not required.
	 */
	String getString();

    /**
     * Whether this should be treated as a token or a generic identifier
     */
	boolean isIdentifier();

    /**
     * Whether this should be treated as a literal value
     *
     * Kinds == "string", ???
     *
     * returns null if this isn't a literal
     */
	String getLiteralKind();


    /**
     * If this token represents a pre-parsed Pointcut, then return it;
     * otherwise returns null.
     *
     * Needed for the implementation of 'if'
     */
	Pointcut maybeGetParsedPointcut();
}