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/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.codehaus.groovy.control.messages;

import org.codehaus.groovy.control.Janitor;
import org.codehaus.groovy.control.SourceUnit;
import org.codehaus.groovy.syntax.CSTNode;

import java.io.PrintWriter;



/**
 *  A class for warning messages.
 *
 *  @author Chris Poirier
 */

public class WarningMessage extends LocatedMessage
{
  //---------------------------------------------------------------------------
  // WARNING LEVELS

    public static final int NONE            = 0;  // For querying, ignore all errors
    public static final int LIKELY_ERRORS   = 1;  // Warning indicates likely error
    public static final int POSSIBLE_ERRORS = 2;  // Warning indicates possible error
    public static final int PARANOIA        = 3;  // Warning indicates paranoia on the part of the compiler
    
    
   /**
    *  Returns true if a warning would be relevant to the specified level.
    */
    
    public static boolean isRelevant( int actual, int limit )
    {
        return actual <= limit;
    }
    
    
    
   /**
    *  Returns true if this message is as or more important than the 
    *  specified importance level.
    */
    
    public boolean isRelevant( int importance )
    {
        return isRelevant( this.importance, importance );
    }
    
    
    
  //---------------------------------------------------------------------------
  // CONSTRUCTION AND DATA ACCESS

    private int importance;  // The warning level, for filtering
    
    
   /**
    *  Creates a new warning message.
    * 
    *  @param importance the warning level 
    *  @param message    the message text
    *  @param context    context information for locating the offending source text
    */
     
    public WarningMessage( int importance, String message, CSTNode context, SourceUnit owner )
    {
        super( message, context, owner );
        this.importance = importance;
    }

    
    
   /**
    *  Creates a new warning message.
    *
    *  @param importance the warning level 
    *  @param message    the message text
    *  @param data       additional data needed when generating the message
    *  @param context    context information for locating the offending source text
    */
     
    public WarningMessage( int importance, String message, Object data, CSTNode context, SourceUnit owner )
    {
        super( message, data, context, owner );
        this.importance = importance;
    }
    
    
    public void write( PrintWriter writer, Janitor janitor )
    {
        writer.print( "warning: " );
        super.write( writer, janitor );
    }

     
     
}