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Diffstat (limited to 'java/core/src/main/java/com/google/protobuf/ProtobufLists.java')
-rw-r--r-- | java/core/src/main/java/com/google/protobuf/ProtobufLists.java | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/java/core/src/main/java/com/google/protobuf/ProtobufLists.java b/java/core/src/main/java/com/google/protobuf/ProtobufLists.java new file mode 100644 index 00000000..e01f21ec --- /dev/null +++ b/java/core/src/main/java/com/google/protobuf/ProtobufLists.java @@ -0,0 +1,96 @@ +// 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.BooleanList; +import com.google.protobuf.Internal.DoubleList; +import com.google.protobuf.Internal.FloatList; +import com.google.protobuf.Internal.IntList; +import com.google.protobuf.Internal.LongList; +import com.google.protobuf.Internal.ProtobufList; + +/** + * Utility class for construction of lists that extend {@link ProtobufList}. + */ +@ExperimentalApi +public final class ProtobufLists { + private ProtobufLists() {} + + public static <E> ProtobufList<E> emptyProtobufList() { + return ProtobufArrayList.emptyList(); + } + + public static <E> ProtobufList<E> mutableCopy(ProtobufList<E> list) { + int size = list.size(); + return list.mutableCopyWithCapacity( + size == 0 ? AbstractProtobufList.DEFAULT_CAPACITY : size * 2); + } + + public static BooleanList emptyBooleanList() { + return BooleanArrayList.emptyList(); + } + + public static BooleanList newBooleanList() { + return new BooleanArrayList(); + } + + public static IntList emptyIntList() { + return IntArrayList.emptyList(); + } + + public static IntList newIntList() { + return new IntArrayList(); + } + + public static LongList emptyLongList() { + return LongArrayList.emptyList(); + } + + public static LongList newLongList() { + return new LongArrayList(); + } + + public static FloatList emptyFloatList() { + return FloatArrayList.emptyList(); + } + + public static FloatList newFloatList() { + return new FloatArrayList(); + } + + public static DoubleList emptyDoubleList() { + return DoubleArrayList.emptyList(); + } + + public static DoubleList newDoubleList() { + return new DoubleArrayList(); + } +} |