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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

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/* *******************************************************************
 * Copyright (c) 2010 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 - SpringSource
 * ******************************************************************/
package org.aspectj.weaver.patterns;

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

import org.aspectj.weaver.ISourceContext;
import org.aspectj.weaver.Member;
import org.aspectj.weaver.ResolvedType;
import org.aspectj.weaver.UnresolvedType;
import org.aspectj.weaver.VersionedDataInputStream;
import org.aspectj.weaver.World;

/**
 * Represents the NOT of a signature pattern
 *
 * @author Andy Clement
 * @since 1.6.9
 */
public class NotSignaturePattern extends AbstractSignaturePattern {

	private ISignaturePattern negatedSp;

	public NotSignaturePattern(ISignaturePattern negatedSp) {
		this.negatedSp = negatedSp;
	}

	public boolean couldEverMatch(ResolvedType type) {
		if (negatedSp.getExactDeclaringTypes().size() == 0) {
			return true;
		}
		return !negatedSp.couldEverMatch(type);
	}

	public List getExactDeclaringTypes() {
		return negatedSp.getExactDeclaringTypes();
	}

	public boolean isMatchOnAnyName() {
		return negatedSp.isMatchOnAnyName();
	}

	public boolean isStarAnnotation() {
		return negatedSp.isStarAnnotation();
	}

	public boolean matches(Member member, World world, boolean b) {
		return !negatedSp.matches(member, world, b);
	}

	public ISignaturePattern parameterizeWith(Map typeVariableBindingMap, World world) {
		return new NotSignaturePattern(negatedSp.parameterizeWith(typeVariableBindingMap, world));
	}

	public ISignaturePattern resolveBindings(IScope scope, Bindings bindings) {
		// Whilst the real SignaturePattern returns 'this' we are safe to return 'this' here rather than build a new
		// AndSignaturePattern
		negatedSp.resolveBindings(scope, bindings);
		return this;
	}

	public static ISignaturePattern readNotSignaturePattern(VersionedDataInputStream s, ISourceContext context) throws IOException {
		NotSignaturePattern ret = new NotSignaturePattern(readCompoundSignaturePattern(s, context));
		// ret.readLocation(context, s); // TODO output position currently useless so dont need to do this
		s.readInt();
		s.readInt();
		return ret;
	}

	public ISignaturePattern getNegated() {
		return negatedSp;
	}

	public String toString() {
		StringBuilder sb = new StringBuilder();
		sb.append("!").append(negatedSp.toString());
		return sb.toString();
	}

}