flex.messaging.util.Assert Maven / Gradle / Ivy
/*
* 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 flex.messaging.util;
/**
* Simple assert class which provides functionality similar to the assert API
* of JDK 1.4.
*
* Enable as follows:
* java -Dassert
*
*
*/
public class Assert
{
public static final boolean enableAssert = (System.getProperty("assert") != null);
/**
* If assertions are enabled and the passed in expression is false, throw an
* AssertionFailedError.
*
* @param expr expression whose truth value is tested
*/
public static void testAssertion(boolean expr)
{
if (enableAssert && !expr)
{
throw new AssertionFailedError();
}
}
/**
* If assertions are enabled and the passed in expression is false, throw an
* AssertionFailedError with the passed in message.
*
* @param expr expression whose truth value is tested
* @param message message contained in the AssertionFailedError when the expression
* is false and assertions are enabled.
*/
public static void testAssertion(boolean expr, String message)
{
if (enableAssert && !expr)
{
throw new AssertionFailedError(message);
}
}
}