ServiceDescriptor.cs

#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/
//
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// met:
//
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// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
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// this software without specific prior written permission.
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#endregion

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;

namespace Google.Protobuf.Reflection
{
    /// <summary>
    /// Describes a service type.
    /// </summary>
    public sealed class ServiceDescriptor : DescriptorBase
    {
        private readonly ServiceDescriptorProto proto;
        private readonly IList<MethodDescriptor> methods;

        internal ServiceDescriptor(ServiceDescriptorProto proto, FileDescriptor file, int index)
            : base(file, file.ComputeFullName(null, proto.Name), index)
        {
            this.proto = proto;
            methods = DescriptorUtil.ConvertAndMakeReadOnly(proto.Method,
                                                            (method, i) => new MethodDescriptor(method, file, this, i));

            file.DescriptorPool.AddSymbol(this);
        }

        /// <summary>
        /// The brief name of the descriptor's target.
        /// </summary>
        public override string Name { get { return proto.Name; } }

        internal override IReadOnlyList<DescriptorBase> GetNestedDescriptorListForField(int fieldNumber)
        {
            switch (fieldNumber)
            {
                case ServiceDescriptorProto.MethodFieldNumber:
                    return (IReadOnlyList<DescriptorBase>) methods;
                default:
                    return null;
            }
        }

        internal ServiceDescriptorProto Proto { get { return proto; } }

        /// <value>
        /// An unmodifiable list of methods in this service.
        /// </value>
        public IList<MethodDescriptor> Methods
        {
            get { return methods; }
        }

        /// <summary>
        /// Finds a method by name.
        /// </summary>
        /// <param name="name">The unqualified name of the method (e.g. "Foo").</param>
        /// <returns>The method's decsriptor, or null if not found.</returns>
        public MethodDescriptor FindMethodByName(String name)
        {
            return File.DescriptorPool.FindSymbol<MethodDescriptor>(FullName + "." + name);
        }

        /// <summary>
        /// The (possibly empty) set of custom options for this service.
        /// </summary>
        public CustomOptions CustomOptions => Proto.Options?.CustomOptions ?? CustomOptions.Empty;

        internal void CrossLink()
        {
            foreach (MethodDescriptor method in methods)
            {
                method.CrossLink();
            }
        }
    }
}