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/*  Copyright (c) 2000-2006 hamcrest.org
 */
package mockit.external.hamcrest;

import java.io.IOException;

/**
 * A {@link Description} that is stored as a string.
 */
public final class StringDescription extends BaseDescription
{
   private final Appendable out;

   public StringDescription()
   {
      this(new StringBuilder());
   }

   public StringDescription(Appendable out)
   {
      this.out = out;
   }

   /**
    * Return the description of a {@link SelfDescribing} object as a String.
    *
    * @param selfDescribing The object to be described.
    * @return The description of the object.
    */
   public static String toString(SelfDescribing selfDescribing)
   {
      return new StringDescription().appendDescriptionOf(selfDescribing).toString();
   }

   @Override
   protected void append(CharSequence str)
   {
      try {
         out.append(str);
      }
      catch (IOException e) {
         throw new RuntimeException("Could not write description", e);
      }
   }

   @Override
   protected void append(char c)
   {
      try {
         out.append(c);
      }
      catch (IOException e) {
         throw new RuntimeException("Could not write description", e);
      }
   }

   /**
    * Returns the description as a string.
    */
   @Override
   public String toString()
   {
      return out.toString();
   }
}