/*

  * Copyright (c) 2011 David Saff

  * Copyright (c) 2011 Christian Gruber

  *

  * Licensed 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.truth0.subjects;

 import org.truth0.FailureStrategy;

 import org.truth0.util.ReflectionUtil;

 import com.google.common.annotations.GwtCompatible;

 import com.google.common.annotations.GwtIncompatible;

 /**

  * A custom subject factory which will return a FooSubject (which

  * is a Subject<Foo>).

  *

  * @author Christian Gruber (cgruber@israfil.net)

  */

 @GwtCompatible

 public abstract class SubjectFactory<S extends Subject<S,T>, T> {

   @GwtIncompatible("reflection")

   private static final int SUBJECT_TYPE_PARAMETER = 0;

   @GwtIncompatible("reflection")

   private final Class<S> type =

       (Class<S>)ReflectionUtil.typeParameter(getClass(), SUBJECT_TYPE_PARAMETER);

   public SubjectFactory() {}

   public abstract S getSubject(FailureStrategy fs, T that);

   @GwtIncompatible("reflection")

   public Class<S> getSubjectClass() {

     return type;

   }

 }