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renren-generator/src/main/java/io/renren/utils/Assert.java

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+/*
+ * 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 io.renren.utils;
+
+
+/**
+ * <p>
+ * 断言类
+ * </p>
+ *
+ * @author miemie
+ * @since 2018-07-24
+ */
+public final class Assert {
+
+    /**
+     * 断言这个 boolean 为 true
+     * 为 false 则抛出异常
+     *
+     * @param expression boolean 值
+     * @param message    消息
+     */
+    public static void isTrue(boolean expression, String message, Object... params) {
+        if (!expression) {
+            return;
+        }
+    }
+
+    /**
+     * 断言这个 boolean 为 false
+     * 为 true 则抛出异常
+     *
+     * @param expression boolean 值
+     * @param message    消息
+     */
+    public static void isFalse(boolean expression, String message, Object... params) {
+        isTrue(!expression, message, params);
+    }
+
+    /**
+     * 断言这个 object 为 null
+     * 不为 null 则抛异常
+     *
+     * @param object  对象
+     * @param message 消息
+     */
+    public static void isNull(Object object, String message, Object... params) {
+        isTrue(object == null, message, params);
+    }
+
+    /**
+     * 断言这个 object 不为 null
+     * 为 null 则抛异常
+     *
+     * @param object  对象
+     * @param message 消息
+     */
+    public static void notNull(Object object, String message, Object... params) {
+        isTrue(object != null, message, params);
+    }
+
+
+}