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Diffstat (limited to 'third_party/protobuf/3.6.0/csharp/src/Google.Protobuf/Reflection/EnumDescriptor.cs')
| -rw-r--r-- | third_party/protobuf/3.6.0/csharp/src/Google.Protobuf/Reflection/EnumDescriptor.cs | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/third_party/protobuf/3.6.0/csharp/src/Google.Protobuf/Reflection/EnumDescriptor.cs b/third_party/protobuf/3.6.0/csharp/src/Google.Protobuf/Reflection/EnumDescriptor.cs new file mode 100644 index 0000000000..89c73a61b2 --- /dev/null +++ b/third_party/protobuf/3.6.0/csharp/src/Google.Protobuf/Reflection/EnumDescriptor.cs @@ -0,0 +1,121 @@ +#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 System; +using System.Collections.Generic; + +namespace Google.Protobuf.Reflection +{ + /// <summary> + /// Descriptor for an enum type in a .proto file. + /// </summary> + public sealed class EnumDescriptor : DescriptorBase + { + private readonly EnumDescriptorProto proto; + private readonly MessageDescriptor containingType; + private readonly IList<EnumValueDescriptor> values; + private readonly Type clrType; + + internal EnumDescriptor(EnumDescriptorProto proto, FileDescriptor file, MessageDescriptor parent, int index, Type clrType) + : base(file, file.ComputeFullName(parent, proto.Name), index) + { + this.proto = proto; + this.clrType = clrType; + containingType = parent; + + if (proto.Value.Count == 0) + { + // We cannot allow enums with no values because this would mean there + // would be no valid default value for fields of this type. + throw new DescriptorValidationException(this, "Enums must contain at least one value."); + } + + values = DescriptorUtil.ConvertAndMakeReadOnly(proto.Value, + (value, i) => new EnumValueDescriptor(value, file, this, i)); + + File.DescriptorPool.AddSymbol(this); + } + + internal EnumDescriptorProto Proto { get { return proto; } } + + /// <summary> + /// The brief name of the descriptor's target. + /// </summary> + public override string Name { get { return proto.Name; } } + + /// <summary> + /// The CLR type for this enum. For generated code, this will be a CLR enum type. + /// </summary> + public Type ClrType { get { return clrType; } } + + /// <value> + /// If this is a nested type, get the outer descriptor, otherwise null. + /// </value> + public MessageDescriptor ContainingType + { + get { return containingType; } + } + + /// <value> + /// An unmodifiable list of defined value descriptors for this enum. + /// </value> + public IList<EnumValueDescriptor> Values + { + get { return values; } + } + + /// <summary> + /// Finds an enum value by number. If multiple enum values have the + /// same number, this returns the first defined value with that number. + /// If there is no value for the given number, this returns <c>null</c>. + /// </summary> + public EnumValueDescriptor FindValueByNumber(int number) + { + return File.DescriptorPool.FindEnumValueByNumber(this, number); + } + + /// <summary> + /// Finds an enum value by name. + /// </summary> + /// <param name="name">The unqualified name of the value (e.g. "FOO").</param> + /// <returns>The value's descriptor, or null if not found.</returns> + public EnumValueDescriptor FindValueByName(string name) + { + return File.DescriptorPool.FindSymbol<EnumValueDescriptor>(FullName + "." + name); + } + + /// <summary> + /// The (possibly empty) set of custom options for this enum. + /// </summary> + public CustomOptions CustomOptions => Proto.Options?.CustomOptions ?? CustomOptions.Empty; + } +}
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