diff options
Diffstat (limited to 'src/main/java/com/google/devtools/build/lib/rules/objc/IterableWrapper.java')
-rw-r--r-- | src/main/java/com/google/devtools/build/lib/rules/objc/IterableWrapper.java | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/rules/objc/IterableWrapper.java b/src/main/java/com/google/devtools/build/lib/rules/objc/IterableWrapper.java new file mode 100644 index 0000000000..4bd7b0c06b --- /dev/null +++ b/src/main/java/com/google/devtools/build/lib/rules/objc/IterableWrapper.java @@ -0,0 +1,40 @@ +// Copyright 2014 Google Inc. All rights reserved. +// +// Licensed 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 com.google.devtools.build.lib.rules.objc; + +import com.google.common.base.Preconditions; +import com.google.common.collect.ImmutableList; + +import java.util.Iterator; + +/** + * Base class for tiny container types that encapsulate an iterable. + */ +abstract class IterableWrapper<E> implements Iterable<E> { + private final Iterable<E> contents; + + IterableWrapper(Iterable<E> contents) { + this.contents = Preconditions.checkNotNull(contents); + } + + IterableWrapper(E... contents) { + this.contents = ImmutableList.copyOf(contents); + } + + @Override + public Iterator<E> iterator() { + return contents.iterator(); + } +} |