Assert.java

/*
 * Copyright 2015 McDowell
 *
 * 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 uk.kludje.experimental.collect.array;

import java.util.function.Function;

final class Assert {

  private Assert() {
  }

  public static <T extends Throwable> void that(boolean predicate, String explanation, Function<String, T> factory) throws T {
    assert explanation != null;
    if (!predicate) {
      T t = factory.apply(explanation);
      throw t;
    }
  }

  public static void that(boolean predicate, String explanation)  {
    assert explanation != null;
    that(predicate, explanation, AssertionError::new);
  }
}