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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     initial implementation
 * ******************************************************************/

package org.aspectj.weaver.patterns;

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

import org.aspectj.weaver.CompressingDataOutputStream;
import org.aspectj.weaver.ISourceContext;
import org.aspectj.weaver.VersionedDataInputStream;
import org.aspectj.weaver.World;

/**
 * For a declare error/warning that specified a type pattern rather than a pointcut.
 *
 * @author Andy Clement
 * @since 1.6.9
 */
public class DeclareTypeErrorOrWarning extends Declare {
	private boolean isError;
	private TypePattern typePattern;
	private String message;

	public DeclareTypeErrorOrWarning(boolean isError, TypePattern typePattern, String message) {
		this.isError = isError;
		this.typePattern = typePattern;
		this.message = message;
	}

	/**
	 * returns "declare warning: <typepattern>: <message>" or "declare error: <typepattern>: <message>"
	 */
	public String toString() {
		StringBuilder buf = new StringBuilder();
		buf.append("declare ");
		if (isError) {
			buf.append("error: ");
		} else {
			buf.append("warning: ");
		}
		buf.append(typePattern);
		buf.append(": ");
		buf.append("\"");
		buf.append(message);
		buf.append("\";");
		return buf.toString();
	}

	public boolean equals(Object other) {
		if (!(other instanceof DeclareTypeErrorOrWarning)) {
			return false;
		}
		DeclareTypeErrorOrWarning o = (DeclareTypeErrorOrWarning) other;
		return (o.isError == isError) && o.typePattern.equals(typePattern) && o.message.equals(message);
	}

	public int hashCode() {
		int result = isError ? 19 : 23;
		result = 37 * result + typePattern.hashCode();
		result = 37 * result + message.hashCode();
		return result;
	}

	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.typePattern != null)
			this.typePattern.traverse(visitor, ret);
		return ret;
	}

	public void write(CompressingDataOutputStream s) throws IOException {
		s.writeByte(Declare.TYPE_ERROR_OR_WARNING);
		s.writeBoolean(isError);
		typePattern.write(s);
		s.writeUTF(message);
		writeLocation(s);
	}

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

	public boolean isError() {
		return isError;
	}

	public String getMessage() {
		return message;
	}

	public TypePattern getTypePattern() {
		return typePattern;
	}

	public void resolve(IScope scope) {
		typePattern.resolve(scope.getWorld());
	}

	public Declare parameterizeWith(Map typeVariableBindingMap, World w) {
		Declare ret = new DeclareTypeErrorOrWarning(isError, typePattern.parameterizeWith(typeVariableBindingMap, w), message);
		ret.copyLocationFrom(this);
		return ret;
	}

	public boolean isAdviceLike() {
		return false;
	}

	public String getNameSuffix() {
		return "teow";
	}

	/**
	 * returns "declare type warning" or "declare type error"
	 */
	public String getName() {
		StringBuilder buf = new StringBuilder();
		buf.append("declare type ");
		if (isError) {
			buf.append("error");
		} else {
			buf.append("warning");
		}
		return buf.toString();
	}
}