01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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:
19: package org.apache.tools.ant.taskdefs.condition;
20:
21: import java.util.Enumeration;
22: import org.apache.tools.ant.BuildException;
23:
24: /**
25: * <and> condition container.
26: *
27: * <p>Iterates over all conditions and returns false as soon as one
28: * evaluates to false.</p>
29: *
30: * @since Ant 1.4
31: */
32: public class And extends ConditionBase implements Condition {
33:
34: /**
35: * @return true if all the contained conditions evaluates to true
36: * @exception BuildException if an error occurs
37: */
38: public boolean eval() throws BuildException {
39: Enumeration e = getConditions();
40: while (e.hasMoreElements()) {
41: Condition c = (Condition) e.nextElement();
42: if (!c.eval()) {
43: return false;
44: }
45: }
46: return true;
47: }
48:
49: }
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