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#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
namespace Google.Protobuf.Reflection
{
/// <summary>
/// Describes a single method in a service.
/// </summary>
public sealed class MethodDescriptor : DescriptorBase
{
private readonly MethodDescriptorProto proto;
private readonly ServiceDescriptor service;
private MessageDescriptor inputType;
private MessageDescriptor outputType;
/// <value>
/// The service this method belongs to.
/// </value>
public ServiceDescriptor Service { get { return service; } }
/// <value>
/// The method's input type.
/// </value>
public MessageDescriptor InputType { get { return inputType; } }
/// <value>
/// The method's input type.
/// </value>
public MessageDescriptor OutputType { get { return outputType; } }
/// <value>
/// Indicates if client streams multiple requests.
/// </value>
public bool IsClientStreaming { get { return proto.ClientStreaming; } }
/// <value>
/// Indicates if server streams multiple responses.
/// </value>
public bool IsServerStreaming { get { return proto.ServerStreaming; } }
/// <summary>
/// The (possibly empty) set of custom options for this method.
/// </summary>
public CustomOptions CustomOptions => Proto.Options?.CustomOptions ?? CustomOptions.Empty;
internal MethodDescriptor(MethodDescriptorProto proto, FileDescriptor file,
ServiceDescriptor parent, int index)
: base(file, parent.FullName + "." + proto.Name, index)
{
this.proto = proto;
service = parent;
file.DescriptorPool.AddSymbol(this);
}
internal MethodDescriptorProto Proto { get { return proto; } }
/// <summary>
/// The brief name of the descriptor's target.
/// </summary>
public override string Name { get { return proto.Name; } }
internal void CrossLink()
{
IDescriptor lookup = File.DescriptorPool.LookupSymbol(Proto.InputType, this);
if (!(lookup is MessageDescriptor))
{
throw new DescriptorValidationException(this, "\"" + Proto.InputType + "\" is not a message type.");
}
inputType = (MessageDescriptor) lookup;
lookup = File.DescriptorPool.LookupSymbol(Proto.OutputType, this);
if (!(lookup is MessageDescriptor))
{
throw new DescriptorValidationException(this, "\"" + Proto.OutputType + "\" is not a message type.");
}
outputType = (MessageDescriptor) lookup;
}
}
}
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