From 390398d38e4fd0d195c91a384f6198a1528bb317 Mon Sep 17 00:00:00 2001 From: Peter Reilly Date: Wed, 22 Aug 2007 08:40:54 +0000 Subject: [PATCH] adding null return git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@568510 13f79535-47bb-0310-9956-ffa450edef68 --- .../apache/tools/ant/property/NullReturn.java | 29 +++++++++++++++++++ .../apache/tools/ant/property/package.html | 3 ++ 2 files changed, 32 insertions(+) create mode 100644 src/main/org/apache/tools/ant/property/NullReturn.java create mode 100644 src/main/org/apache/tools/ant/property/package.html diff --git a/src/main/org/apache/tools/ant/property/NullReturn.java b/src/main/org/apache/tools/ant/property/NullReturn.java new file mode 100644 index 000000000..2012afeea --- /dev/null +++ b/src/main/org/apache/tools/ant/property/NullReturn.java @@ -0,0 +1,29 @@ +/* + * 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 org.apache.tools.ant.property; + +/** Class to represent a null and to stop the chain of lookups. */ +public final class NullReturn { + /** a value to use in a property helper to stop looking properties */ + public static final NullReturn NULL = new NullReturn(); + + /** Private constructor */ + private NullReturn() { + } +} + diff --git a/src/main/org/apache/tools/ant/property/package.html b/src/main/org/apache/tools/ant/property/package.html new file mode 100644 index 000000000..e92d987d8 --- /dev/null +++ b/src/main/org/apache/tools/ant/property/package.html @@ -0,0 +1,3 @@ + + Contains helper classes for ant properties. +