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author | Jon Skeet <jonskeet@google.com> | 2015-06-23 16:09:27 +0100 |
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committer | Jon Skeet <jonskeet@google.com> | 2015-06-24 17:56:22 +0100 |
commit | bfee2dfe137b07e64ebd46baf71d932d58d01b1f (patch) | |
tree | 4bf6258a990369335cc82c8a8059eaaf1dc2dd06 /csharp/src/ProtocolBuffers/Freezable.cs | |
parent | 94071b54d24d2f2f1cb5933a692b5397a047057c (diff) | |
download | protobuf-bfee2dfe137b07e64ebd46baf71d932d58d01b1f.tar.gz protobuf-bfee2dfe137b07e64ebd46baf71d932d58d01b1f.tar.bz2 protobuf-bfee2dfe137b07e64ebd46baf71d932d58d01b1f.zip |
Implement freezing for messages and repeated fields.
Fixes issue #523.
Diffstat (limited to 'csharp/src/ProtocolBuffers/Freezable.cs')
-rw-r--r-- | csharp/src/ProtocolBuffers/Freezable.cs | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/csharp/src/ProtocolBuffers/Freezable.cs b/csharp/src/ProtocolBuffers/Freezable.cs new file mode 100644 index 00000000..40b4398a --- /dev/null +++ b/csharp/src/ProtocolBuffers/Freezable.cs @@ -0,0 +1,60 @@ +#region Copyright notice and license + +// Protocol Buffers - Google's data interchange format +// Copyright 2015 Google Inc. All rights reserved. +// http://github.com/google/protobuf +// +// 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. + +#endregion + +using System; + +namespace Google.Protobuf +{ + /// <summary> + /// Extension methods for <see cref="IFreezable"/> types. + /// </summary> + public static class Freezable + { + /// <summary> + /// Throws an <see cref="InvalidOperationException"/> if <paramref name="target"/> + /// is frozen. + /// </summary> + /// <remarks> + /// This is a convenience methods that freezable types can call before all + /// mutations, to protect frozen objects. + /// </remarks> + public static void CheckMutable(this IFreezable target) + { + if (target.IsFrozen) + { + throw new InvalidOperationException("Attempt to mutate frozen object"); + } + } + } +} |