/*
 * 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.apache.tsfile.external.commons.io.function;

/** Defines package-private constants. */
final class Constants {

  /** No-op singleton. */
  @SuppressWarnings("rawtypes")
  static final IOBiConsumer IO_BI_CONSUMER =
      (t, u) -> {
        /* No-op */
      };

  /** No-op singleton. */
  static final IORunnable IO_RUNNABLE =
      () -> {
        /* No-op */
      };

  /** No-op singleton. */
  @SuppressWarnings("rawtypes")
  static final IOBiFunction IO_BI_FUNCTION = (t, u) -> null;

  /** No-op singleton. */
  @SuppressWarnings("rawtypes")
  static final IOFunction IO_FUNCTION_ID = t -> t;

  /** Always false. */
  static final IOPredicate<Object> IO_PREDICATE_FALSE = t -> false;

  /** Always true. */
  static final IOPredicate<Object> IO_PREDICATE_TRUE = t -> true;

  /** No-op singleton. */
  @SuppressWarnings("rawtypes")
  static final IOTriConsumer IO_TRI_CONSUMER =
      (t, u, v) -> {
        /* No-op */
      };

  private Constants() {
    // We don't want instances
  }
}
