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DeclareErrorOrWarning.java

/* *******************************************************************
 * 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 v1.0 
 * which accompanies this distribution and is available at 
 * http://www.eclipse.org/legal/epl-v10.html 
 *  
 * Contributors: 
 *     PARC     initial implementation 
 * ******************************************************************/


package org.aspectj.weaver.patterns;

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

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

public class DeclareErrorOrWarning extends Declare {
      private boolean isError;
      private Pointcut pointcut;
      private String message;

      public DeclareErrorOrWarning(boolean isError, Pointcut pointcut, String message) {
            this.isError = isError;
            this.pointcut = pointcut;
            this.message = message;
      }
      
      /**
       * returns "declare warning: <message>" or "declare error: <message>"
       */
      public String toString() {
            StringBuffer buf = new StringBuffer();
            buf.append("declare ");
            if (isError) buf.append("error: ");
            else buf.append("warning: ");
            buf.append(pointcut);
            buf.append(": ");
            buf.append("\"");
            buf.append(message);
            buf.append("\";");
            return buf.toString();
      }
      
      public boolean equals(Object other) { 
            if (!(other instanceof DeclareErrorOrWarning)) return false;
            DeclareErrorOrWarning o = (DeclareErrorOrWarning)other;
            return (o.isError == isError) &&
                  o.pointcut.equals(pointcut) &&
                  o.message.equals(message);
      }
    
    public int hashCode() {
        int result = isError ? 19 : 23;
        result = 37*result + pointcut.hashCode();
        result = 37*result + message.hashCode();
        return result;
    }

      public Object accept(PatternNodeVisitor visitor, Object data) {
            return visitor.visit(this,data);
      }
      
      public void write(DataOutputStream s) throws IOException {
            s.writeByte(Declare.ERROR_OR_WARNING);
            s.writeBoolean(isError);
            pointcut.write(s);
            s.writeUTF(message);
            writeLocation(s);
      }

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


      public boolean isError() {
            return isError;
      }

      public String getMessage() {
            return message;
      }

      public Pointcut getPointcut() {
            return pointcut;
      }
      
    public void resolve(IScope scope) {
      pointcut = pointcut.resolve(scope);       
    }
    
    public Declare parameterizeWith(Map typeVariableBindingMap,World w) {
      Declare ret = new DeclareErrorOrWarning(isError,pointcut.parameterizeWith(typeVariableBindingMap,w),message);
      ret.copyLocationFrom(this);
      return ret;
    }
    
      public boolean isAdviceLike() {
            return true;
      }

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

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