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

public class PerFromSuper extends PerClause {
	private PerClause.Kind kind;

	public PerFromSuper(PerClause.Kind kind) {
		this.kind = kind;
	}

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

	public int couldMatchKinds() {
		return Shadow.ALL_SHADOW_KINDS_BITS;
	}

	public FuzzyBoolean fastMatch(FastMatchInfo type) {
		throw new RuntimeException("unimplemented");
	}

	protected FuzzyBoolean matchInternal(Shadow shadow) {
		throw new RuntimeException("unimplemented");
	}

	public void resolveBindings(IScope scope, Bindings bindings) {
		// this method intentionally left blank
	}

	protected Test findResidueInternal(Shadow shadow, ExposedState state) {
		throw new RuntimeException("unimplemented");
	}

	public PerClause concretize(ResolvedType inAspect) {
		PerClause p = lookupConcretePerClause(inAspect.getSuperclass());
		if (p == null) {
			inAspect.getWorld().getMessageHandler().handleMessage(
					MessageUtil.error(WeaverMessages.format(WeaverMessages.MISSING_PER_CLAUSE, inAspect.getSuperclass()),
							getSourceLocation()));
			return new PerSingleton().concretize(inAspect);// AV: fallback on something else NPE in AJDT
		} else {
			if (p.getKind() != kind) {
				inAspect.getWorld().getMessageHandler().handleMessage(
						MessageUtil.error(WeaverMessages.format(WeaverMessages.WRONG_PER_CLAUSE, kind, p.getKind()),
								getSourceLocation()));
			}
			return p.concretize(inAspect);
		}
	}

	public Pointcut parameterizeWith(Map typeVariableMap, World w) {
		return this;
	}

	public PerClause lookupConcretePerClause(ResolvedType lookupType) {
		PerClause ret = lookupType.getPerClause();
		if (ret == null) {
			return null;
		}
		if (ret instanceof PerFromSuper) {
			return lookupConcretePerClause(lookupType.getSuperclass());
		}
		return ret;
	}

	public void write(CompressingDataOutputStream s) throws IOException {
		FROMSUPER.write(s);
		kind.write(s);
		writeLocation(s);
	}

	public static PerClause readPerClause(VersionedDataInputStream s, ISourceContext context) throws IOException {
		PerFromSuper ret = new PerFromSuper(Kind.read(s));
		ret.readLocation(context, s);
		return ret;
	}

	public String toString() {
		return "perFromSuper(" + kind + ", " + inAspect + ")";
	}

	public String toDeclarationString() {
		return "";
	}

	public PerClause.Kind getKind() {
		return kind;
	}

	public boolean equals(Object other) {
		if (!(other instanceof PerFromSuper)) {
			return false;
		}
		PerFromSuper pc = (PerFromSuper) other;
		return pc.kind.equals(kind) && ((pc.inAspect == null) ? (inAspect == null) : pc.inAspect.equals(inAspect));
	}

	public int hashCode() {
		int result = 17;
		result = 37 * result + kind.hashCode();
		result = 37 * result + ((inAspect == null) ? 0 : inAspect.hashCode());
		return result;
	}

}