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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.IMessage;
import org.aspectj.weaver.CompressingDataOutputStream;
import org.aspectj.weaver.ISourceContext;
import org.aspectj.weaver.ResolvedType;
import org.aspectj.weaver.TypeVariableReferenceType;
import org.aspectj.weaver.UnresolvedType;
import org.aspectj.weaver.VersionedDataInputStream;
import org.aspectj.weaver.WeaverMessages;
import org.aspectj.weaver.World;

public class DeclareSoft extends Declare {
	private TypePattern exception;
	private Pointcut pointcut;

	public DeclareSoft(TypePattern exception, Pointcut pointcut) {
		this.exception = exception;
		this.pointcut = pointcut;
	}

	@Override
	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.exception != null)
			this.exception.traverse(visitor, ret);
		if (this.pointcut != null)
			this.pointcut.traverse(visitor, ret);
		return ret;
	}

	@Override
	public Declare parameterizeWith(Map typeVariableBindingMap, World w) {
		DeclareSoft ret = new DeclareSoft(exception.parameterizeWith(typeVariableBindingMap, w), pointcut.parameterizeWith(
				typeVariableBindingMap, w));
		ret.copyLocationFrom(this);
		return ret;
	}

	@Override
	public String toString() {
		StringBuilder buf = new StringBuilder();
		buf.append("declare soft: ");
		buf.append(exception);
		buf.append(": ");
		buf.append(pointcut);
		buf.append(";");
		return buf.toString();
	}

	@Override
	public boolean equals(Object other) {
		if (!(other instanceof DeclareSoft)) {
			return false;
		}
		DeclareSoft o = (DeclareSoft) other;
		return o.pointcut.equals(pointcut) && o.exception.equals(exception);
	}

	@Override
	public int hashCode() {
		int result = 19;
		result = 37 * result + pointcut.hashCode();
		result = 37 * result + exception.hashCode();
		return result;
	}

	@Override
	public void write(CompressingDataOutputStream s) throws IOException {
		s.writeByte(Declare.SOFT);
		exception.write(s);
		pointcut.write(s);
		writeLocation(s);
	}

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

	public Pointcut getPointcut() {
		return pointcut;
	}

	public TypePattern getException() {
		return exception;
	}

	@Override
	public void resolve(IScope scope) {
		exception = exception.resolveBindings(scope, null, false, true);
		ResolvedType excType = exception.getExactType().resolve(scope.getWorld());
		if (!excType.isMissing()) {
			if (excType.isTypeVariableReference()) {
				TypeVariableReferenceType typeVariableRT = (TypeVariableReferenceType) excType;
				// a declare soft in a generic abstract aspect, we need to check the upper bound
				// WIBBLE
				excType = typeVariableRT.getTypeVariable().getFirstBound().resolve(scope.getWorld());
			}
			if (!scope.getWorld().getCoreType(UnresolvedType.THROWABLE).isAssignableFrom(excType)) {
				scope.getWorld()
						.showMessage(IMessage.ERROR, WeaverMessages.format(WeaverMessages.NOT_THROWABLE, excType.getName()),
								exception.getSourceLocation(), null);
				pointcut = Pointcut.makeMatchesNothing(Pointcut.RESOLVED);
				return;
			}
			// ENH 42743 suggests that we don't soften runtime exceptions.
			if (scope.getWorld().getCoreType(UnresolvedType.RUNTIME_EXCEPTION).isAssignableFrom(excType)) {
				scope.getWorld().getLint().runtimeExceptionNotSoftened.signal(new String[] { excType.getName() }, exception
						.getSourceLocation(), null);
				pointcut = Pointcut.makeMatchesNothing(Pointcut.RESOLVED);
				return;
			}
		}

		pointcut = pointcut.resolve(scope);
	}

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

	@Override
	public String getNameSuffix() {
		return "soft";
	}
}