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 package org.apidesign.api.security;

 import java.nio.ByteBuffer;

 import org.apidesign.spi.security.Digestor;

 /**

  *

  * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  */

 // BEGIN: day.end.bridges.DigestImpl

 final class DigestImpl<Data> {

     private static final DigestorAccessorImpl ACCESSOR;

     static {

         ACCESSOR = new DigestorAccessorImpl();

     }

     private final Digestor<Data> digestor;

     private final String algorithm;

     private Data data;

     private DigestImpl(Digestor<Data> digestor, String algorithm, Data d) {

         this.digestor = digestor;

         this.algorithm = algorithm;

         this.data = d;

     }

     static <Data> DigestImpl create(

         Digestor<Data> digestor, String algorithm

     ) {

         // indirectly calls digestor.create(algorithm)

         Data d = ACCESSOR.create(digestor, algorithm);

         if (d == null) {

             return null;

         } else {

             return new DigestImpl(digestor, algorithm, d);

         }

     }

     byte[] digest(ByteBuffer bb) {

         // indirectly calls digestor.update(data, bb)

         ACCESSOR.update(digestor, data, bb);

         // indirectly calls digestor.digest(data)

         return ACCESSOR.digest(digestor, data);

     }

 }

 // END: day.end.bridges.DigestImpl