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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.bridge.IMessage;
import org.aspectj.bridge.IMessageHandler;
import org.aspectj.bridge.ISourceLocation;
import org.aspectj.bridge.Message;
import org.aspectj.bridge.SourceLocation;
import org.aspectj.weaver.IHasPosition;
import org.aspectj.weaver.ResolvedType;
import org.aspectj.weaver.UnresolvedType;
import org.aspectj.weaver.World;

public class SimpleScope implements IScope {

	private static final String[] NoStrings = new String[0];
	private static final String[] javaLangPrefixArray = new String[] { "java.lang.", };

	private String[] importedPrefixes = javaLangPrefixArray;
	private String[] importedNames = NoStrings;
	private World world;
	private ResolvedType enclosingType;
	protected FormalBinding[] bindings;

	public SimpleScope(World world, FormalBinding[] bindings) {
		super();
		this.world = world;
		this.bindings = bindings;
	}

	public UnresolvedType lookupType(String name, IHasPosition location) {
		for (String importedName : importedNames) {
			// make sure we're matching against the type name rather than part of it
			// if (importedName.endsWith("." + name)) {
			if (importedName.endsWith(name)) {
				return world.resolve(importedName);
			}
		}

		// Check for a primitive
		if (name.length() < 8 && Character.isLowerCase(name.charAt(0))) {
			// could be a primitive
			int len = name.length();
			if (len == 3) {
				if (name.equals("int")) {
					return UnresolvedType.INT;
				}
			} else if (len == 4) {
				if (name.equals("void")) {
					return UnresolvedType.VOID;
				} else if (name.equals("byte")) {
					return UnresolvedType.BYTE;
				} else if (name.equals("char")) {
					return UnresolvedType.CHAR;
				} else if (name.equals("long")) {
					return UnresolvedType.LONG;
				}
			} else if (len == 5) {
				if (name.equals("float")) {
					return UnresolvedType.FLOAT;
				} else if (name.equals("short")) {
					return UnresolvedType.SHORT;
				}
			} else if (len == 6) {
				if (name.equals("double")) {
					return UnresolvedType.DOUBLE;
				}
			} else if (len == 7) {
				if (name.equals("boolean")) {
					return UnresolvedType.BOOLEAN;
				}
			}
		}

		// Is it fully qualified?
		if (name.indexOf('.') != -1) {
			return world.resolve(UnresolvedType.forName(name), true);
		}

		for (String importedPrefix : importedPrefixes) {
			ResolvedType tryType = world.resolve(UnresolvedType.forName(importedPrefix + name), true);
			if (!tryType.isMissing()) {
				return tryType;
			}
		}

		return world.resolve(UnresolvedType.forName(name), true);
	}

	public IMessageHandler getMessageHandler() {
		return world.getMessageHandler();
	}

	public FormalBinding lookupFormal(String name) {
		for (FormalBinding binding : bindings) {
			if (binding.getName().equals(name)) {
				return binding;
			}
		}
		return null;
	}

	public FormalBinding getFormal(int i) {
		return bindings[i];
	}

	public int getFormalCount() {
		return bindings.length;
	}

	public String[] getImportedNames() {
		return importedNames;
	}

	public String[] getImportedPrefixes() {
		return importedPrefixes;
	}

	public void setImportedNames(String[] importedNames) {
		this.importedNames = importedNames;
	}

	public void setImportedPrefixes(String[] importedPrefixes) {
		this.importedPrefixes = importedPrefixes;
	}

	public static FormalBinding[] makeFormalBindings(UnresolvedType[] types, String[] names) {
		int len = types.length;
		FormalBinding[] bindings = new FormalBinding[len];
		for (int i = 0; i < len; i++) {
			bindings[i] = new FormalBinding(types[i], names[i], i);
		}
		return bindings;
	}

	public ISourceLocation makeSourceLocation(IHasPosition location) {
		return new SourceLocation(ISourceLocation.NO_FILE, 0);
	}

	public void message(IMessage.Kind kind, IHasPosition location1, IHasPosition location2, String message) {
		message(kind, location1, message);
		message(kind, location2, message);
	}

	public void message(IMessage.Kind kind, IHasPosition location, String message) {
		getMessageHandler().handleMessage(new Message(message, kind, null, makeSourceLocation(location)));
	}

	public void message(IMessage aMessage) {
		getMessageHandler().handleMessage(aMessage);
	}

	public World getWorld() {
		return world;
	}

	public ResolvedType getEnclosingType() {
		return enclosingType;
	}

}