001/*
002 * ====================================================================
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *   http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing,
014 * software distributed under the License is distributed on an
015 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
016 * KIND, either express or implied.  See the License for the
017 * specific language governing permissions and limitations
018 * under the License.
019 * ====================================================================
020 *
021 * This software consists of voluntary contributions made by many
022 * individuals on behalf of the Apache Software Foundation.  For more
023 * information on the Apache Software Foundation, please see
024 * <http://www.apache.org/>.
025 *
026 */
027
028package org.apache.http.util;
029
030public class Asserts {
031
032    public static void check(final boolean expression, final String message) {
033        if (!expression) {
034            throw new IllegalStateException(message);
035        }
036    }
037
038    public static void check(final boolean expression, final String message, final Object... args) {
039        if (!expression) {
040            throw new IllegalStateException(String.format(message, args));
041        }
042    }
043
044    public static void check(final boolean expression, final String message, final Object arg) {
045        if (!expression) {
046            throw new IllegalStateException(String.format(message, arg));
047        }
048    }
049
050    public static void notNull(final Object object, final String name) {
051        if (object == null) {
052            throw new IllegalStateException(name + " is null");
053        }
054    }
055
056    public static void notEmpty(final CharSequence s, final String name) {
057        if (TextUtils.isEmpty(s)) {
058            throw new IllegalStateException(name + " is empty");
059        }
060    }
061
062    public static void notBlank(final CharSequence s, final String name) {
063        if (TextUtils.isBlank(s)) {
064            throw new IllegalStateException(name + " is blank");
065        }
066    }
067
068}