csharp-sdk-upm/Libs/Google.Protobuf/Reflection/EnumValueDescriptor.cs

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2021-03-29 14:54:12 +08:00
#region Copyright notice and license
// 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.
#endregion
using LC.Google.Protobuf.Collections;
using System;
namespace LC.Google.Protobuf.Reflection
{
/// <summary>
/// Descriptor for a single enum value within an enum in a .proto file.
/// </summary>
public sealed class EnumValueDescriptor : DescriptorBase
{
private readonly EnumDescriptor enumDescriptor;
private readonly EnumValueDescriptorProto proto;
internal EnumValueDescriptor(EnumValueDescriptorProto proto, FileDescriptor file,
EnumDescriptor parent, int index)
: base(file, parent.FullName + "." + proto.Name, index)
{
this.proto = proto;
enumDescriptor = parent;
file.DescriptorPool.AddSymbol(this);
file.DescriptorPool.AddEnumValueByNumber(this);
}
internal EnumValueDescriptorProto Proto { get { return proto; } }
/// <summary>
/// Returns the name of the enum value described by this object.
/// </summary>
public override string Name { get { return proto.Name; } }
/// <summary>
/// Returns the number associated with this enum value.
/// </summary>
public int Number { get { return Proto.Number; } }
/// <summary>
/// Returns the enum descriptor that this value is part of.
/// </summary>
public EnumDescriptor EnumDescriptor { get { return enumDescriptor; } }
/// <summary>
/// The (possibly empty) set of custom options for this enum value.
/// </summary>
[Obsolete("CustomOptions are obsolete. Use the GetOptions() method.")]
public CustomOptions CustomOptions => new CustomOptions(Proto.Options?._extensions?.ValuesByNumber);
/// <summary>
/// The <c>EnumValueOptions</c>, defined in <c>descriptor.proto</c>.
/// If the options message is not present (i.e. there are no options), <c>null</c> is returned.
/// Custom options can be retrieved as extensions of the returned message.
/// NOTE: A defensive copy is created each time this property is retrieved.
/// </summary>
public EnumValueOptions GetOptions() => Proto.Options?.Clone();
/// <summary>
/// Gets a single value enum value option for this descriptor
/// </summary>
[Obsolete("GetOption is obsolete. Use the GetOptions() method.")]
public T GetOption<T>(Extension<EnumValueOptions, T> extension)
{
var value = Proto.Options.GetExtension(extension);
return value is IDeepCloneable<T> ? (value as IDeepCloneable<T>).Clone() : value;
}
/// <summary>
/// Gets a repeated value enum value option for this descriptor
/// </summary>
[Obsolete("GetOption is obsolete. Use the GetOptions() method.")]
public RepeatedField<T> GetOption<T>(RepeatedExtension<EnumValueOptions, T> extension)
{
return Proto.Options.GetExtension(extension).Clone();
}
}
}