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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 java.io.IOException;
import java.util.Map;

import org.aspectj.util.FuzzyBoolean;
import org.aspectj.weaver.CompressingDataOutputStream;
import org.aspectj.weaver.ISourceContext;
import org.aspectj.weaver.IntMap;
import org.aspectj.weaver.ResolvedType;
import org.aspectj.weaver.Shadow;
import org.aspectj.weaver.VersionedDataInputStream;
import org.aspectj.weaver.World;
import org.aspectj.weaver.ast.Test;
import org.aspectj.weaver.UnresolvedType;


public class OrPointcut extends Pointcut {
	Pointcut left, right;
	private int couldMatchKinds;

	public OrPointcut(Pointcut left, Pointcut right) {
		super();
		this.left = left;
		this.right = right;
		setLocation(left.getSourceContext(), left.getStart(), right.getEnd());
		this.pointcutKind = OR;
		this.couldMatchKinds = left.couldMatchKinds() | right.couldMatchKinds();
	}

	public int couldMatchKinds() {
		return couldMatchKinds;
	}

	public FuzzyBoolean fastMatch(FastMatchInfo type) {
		FuzzyBoolean leftMatch = left.fastMatch(type);
		if (leftMatch.alwaysTrue()) {
			return leftMatch;
		}
		return leftMatch.or(right.fastMatch(type));
	}

	protected FuzzyBoolean matchInternal(Shadow shadow) {
		FuzzyBoolean leftMatch = left.match(shadow);
		if (leftMatch.alwaysTrue()) {
			return leftMatch;
		}
		return leftMatch.or(right.match(shadow));
	}

	public String toString() {
		return "(" + left.toString() + " || " + right.toString() + ")";
	}

	public boolean equals(Object other) {
		if (!(other instanceof OrPointcut)) {
			return false;
		}
		OrPointcut o = (OrPointcut) other;
		return o.left.equals(left) && o.right.equals(right);
	}

	public int hashCode() {
		int result = 31;
		result = 37 * result + left.hashCode();
		result = 37 * result + right.hashCode();
		return result;
	}

	/**
	 * @see org.aspectj.weaver.patterns.Pointcut#resolveBindings(IScope, Bindings)
	 */
	public void resolveBindings(IScope scope, Bindings bindings) {
		Bindings old = bindings == null ? null : bindings.copy();

		left.resolveBindings(scope, bindings);
		right.resolveBindings(scope, old);
		if (bindings != null) {
			bindings.checkEquals(old, scope);
		}

	}

	public void write(CompressingDataOutputStream s) throws IOException {
		s.writeByte(Pointcut.OR);
		left.write(s);
		right.write(s);
		writeLocation(s);
	}

	public static Pointcut read(VersionedDataInputStream s, ISourceContext context) throws IOException {
		OrPointcut ret = new OrPointcut(Pointcut.read(s, context), Pointcut.read(s, context));
		ret.readLocation(context, s);
		return ret;

	}

	protected Test findResidueInternal(Shadow shadow, ExposedState state) {
		return Test.makeOr(left.findResidue(shadow, state), right.findResidue(shadow, state));
	}

	public Pointcut concretize1(ResolvedType inAspect, ResolvedType declaringType, IntMap bindings) {
		Pointcut ret = new OrPointcut(left.concretize(inAspect, declaringType, bindings), right.concretize(inAspect, declaringType,
				bindings));
		ret.copyLocationFrom(this);
		return ret;
	}

	@Override
	public Pointcut parameterizeWith(Map typeVariableMap, World w) {
		Pointcut ret = new OrPointcut(left.parameterizeWith(typeVariableMap, w), right.parameterizeWith(typeVariableMap, w));
		ret.copyLocationFrom(this);
		return ret;
	}

	public Pointcut getLeft() {
		return left;
	}

	public Pointcut getRight() {
		return right;
	}

	public Object accept(PatternNodeVisitor visitor, Object data) {
		return visitor.visit(this, data);
	}

	public Object traverse(PatternNodeVisitor visitor, Object data) {
		Object ret = accept(visitor, data);
		if (this.left != null)
			this.left.traverse(visitor, ret);
		if (this.right != null)
			this.right.traverse(visitor, ret);
		return ret;
	}
}