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Diffstat (limited to 'java/src/main/java/com/google/protobuf/ProtobufArrayList.java')
-rw-r--r-- | java/src/main/java/com/google/protobuf/ProtobufArrayList.java | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/java/src/main/java/com/google/protobuf/ProtobufArrayList.java b/java/src/main/java/com/google/protobuf/ProtobufArrayList.java new file mode 100644 index 00000000..759368c9 --- /dev/null +++ b/java/src/main/java/com/google/protobuf/ProtobufArrayList.java @@ -0,0 +1,95 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +package com.google.protobuf; + +import com.google.protobuf.Internal.ProtobufList; + +import java.util.ArrayList; +import java.util.List; + +/** + * Implements {@link ProtobufList} for non-primitive and {@link String} types. + */ +class ProtobufArrayList<E> extends AbstractProtobufList<E> { + + private static final ProtobufArrayList<Object> EMPTY_LIST = new ProtobufArrayList<Object>(); + static { + EMPTY_LIST.makeImmutable(); + } + + @SuppressWarnings("unchecked") // Guaranteed safe by runtime. + public static <E> ProtobufArrayList<E> emptyList() { + return (ProtobufArrayList<E>) EMPTY_LIST; + } + + private final List<E> list; + + ProtobufArrayList() { + list = new ArrayList<E>(); + } + + ProtobufArrayList(List<E> toCopy) { + list = new ArrayList<E>(toCopy); + } + + @Override + public void add(int index, E element) { + ensureIsMutable(); + list.add(index, element); + modCount++; + } + + @Override + public E get(int index) { + return list.get(index); + } + + @Override + public E remove(int index) { + ensureIsMutable(); + E toReturn = list.remove(index); + modCount++; + return toReturn; + } + + @Override + public E set(int index, E element) { + ensureIsMutable(); + E toReturn = list.set(index, element); + modCount++; + return toReturn; + } + + @Override + public int size() { + return list.size(); + } +} |