1/*
2 *  Licensed to the Apache Software Foundation (ASF) under one or more
3 *  contributor license agreements.  See the NOTICE file distributed with
4 *  this work for additional information regarding copyright ownership.
5 *  The ASF licenses this file to You under the Apache License, Version 2.0
6 *  (the "License"); you may not use this file except in compliance with
7 *  the License.  You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 *
17 */
18
19package org.apache.tools.ant.taskdefs.condition;
20
21import org.apache.tools.ant.BuildException;
22
23/**
24 * Interface for conditions to use inside the <condition> task.
25 *
26 */
27public interface Condition {
28    /**
29     * Is this condition true?
30     * @return true if the condition is true
31     * @exception BuildException if an error occurs
32     */
33    boolean eval() throws BuildException;
34}
35
36