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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) 2002, 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:
 *     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.ResolvedType;
import org.aspectj.weaver.UnresolvedType;
import org.aspectj.weaver.World;

public class NoTypePattern extends TypePattern {

	public NoTypePattern() {
		super(false, false, new TypePatternList());
	}

	/*
	 * (non-Javadoc)
	 *
	 * @see org.aspectj.weaver.patterns.TypePattern#couldEverMatchSameTypesAs(org.aspectj.weaver.patterns.TypePattern)
	 */
	@Override
	protected boolean couldEverMatchSameTypesAs(TypePattern other) {
		return false;
	}

	/**
	 * @see org.aspectj.weaver.patterns.TypePattern#matchesExactly(ResolvedType)
	 */
	@Override
	protected boolean matchesExactly(ResolvedType type) {
		return false;
	}

	@Override
	protected boolean matchesExactly(ResolvedType type, ResolvedType annotatedType) {
		return false;
	}

	@Override
	protected boolean matchesArray(UnresolvedType type) {
		return false;
	}

	/**
	 * @see org.aspectj.weaver.patterns.TypePattern#matchesInstanceof(ResolvedType)
	 */
	@Override
	public FuzzyBoolean matchesInstanceof(ResolvedType type) {
		return FuzzyBoolean.NO;
	}

	@Override
	public void write(CompressingDataOutputStream s) throws IOException {
		s.writeByte(NO_KEY);
	}

	/**
	 * @see org.aspectj.weaver.patterns.TypePattern#matches(IType, MatchKind)
	 */
	// public FuzzyBoolean matches(IType type, MatchKind kind) {
	// return FuzzyBoolean.YES;
	// }
	/**
	 * @see org.aspectj.weaver.patterns.TypePattern#matchesSubtypes(ResolvedType)
	 */
	@Override
	protected boolean matchesSubtypes(ResolvedType type) {
		return false;
	}

	@Override
	public boolean isStar() {
		return false;
	}

	@Override
	public String toString() {
		return "";
	}// FIXME AV - bad! toString() cannot be parsed back (not idempotent)

	/*
	 * (non-Javadoc)
	 *
	 * @see java.lang.Object#equals(java.lang.Object)
	 */
	@Override
	public boolean equals(Object obj) {
		return (obj instanceof NoTypePattern);
	}

	/*
	 * (non-Javadoc)
	 *
	 * @see java.lang.Object#hashCode()
	 */
	@Override
	public int hashCode() {
		return 17 * 37 * 37;
	}

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

	@Override
	public TypePattern parameterizeWith(Map arg0, World w) {
		return this;
	}
}