Implementation of service interface generator
diff --git a/src/ProtoGen/ServiceInterfaceGenerator.cs b/src/ProtoGen/ServiceInterfaceGenerator.cs
new file mode 100644
index 0000000..4aa8ffa
--- /dev/null
+++ b/src/ProtoGen/ServiceInterfaceGenerator.cs
@@ -0,0 +1,235 @@
+#region Copyright notice and license
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// http://github.com/jskeet/dotnet-protobufs/
+// Original C++/Java/Python code:
+// http://code.google.com/p/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;
+using System.Collections.Generic;
+using Google.ProtocolBuffers.DescriptorProtos;
+using Google.ProtocolBuffers.Descriptors;
+
+namespace Google.ProtocolBuffers.ProtoGen {
+ internal class ServiceGenerator : SourceGeneratorBase<ServiceDescriptor>, ISourceGenerator {
+
+ readonly CSharpServiceType svcType;
+ ISourceGenerator _generator;
+
+ internal ServiceGenerator(ServiceDescriptor descriptor)
+ : base(descriptor) {
+ svcType = descriptor.File.CSharpOptions.ServiceGeneratorType;
+ switch (svcType) {
+ case CSharpServiceType.GENERIC:
+ _generator = new GenericServiceGenerator(descriptor);
+ break;
+ case CSharpServiceType.INTERFACE:
+ _generator = new ServiceInterfaceGenerator(descriptor);
+ break;
+ case CSharpServiceType.IRPCDISPATCH:
+ _generator = new RpcServiceGenerator(descriptor);
+ break;
+ default: throw new ApplicationException("Unknown ServiceGeneratorType = " + svcType.ToString());
+ }
+ }
+
+ public void Generate(TextGenerator writer) {
+ _generator.Generate(writer);
+ }
+
+ class ServiceInterfaceGenerator : SourceGeneratorBase<ServiceDescriptor>, ISourceGenerator {
+
+ public ServiceInterfaceGenerator(ServiceDescriptor descriptor)
+ : base(descriptor) {
+ }
+
+ public virtual void Generate(TextGenerator writer) {
+
+ CSharpServiceOptions options = Descriptor.Options.GetExtension(CSharpOptions.CsharpServiceOptions);
+ if (options != null && options.HasInterfaceId) {
+ writer.WriteLine("[global::System.Runtime.InteropServices.GuidAttribute(\"{0}\")]", new Guid(options.InterfaceId));
+ }
+ writer.WriteLine("{0} partial interface I{1} {{", ClassAccessLevel, Descriptor.Name);
+ writer.Indent();
+
+ foreach (MethodDescriptor method in Descriptor.Methods)
+ {
+ CSharpMethodOptions mth = method.Options.GetExtension(CSharpOptions.CsharpMethodOptions);
+ if(mth.HasDispatchId) {
+ writer.WriteLine("[global::System.Runtime.InteropServices.DispId({0})]", mth.DispatchId);
+ }
+ writer.WriteLine("{0} {1}({2} {3});", GetClassName(method.OutputType), NameHelpers.UnderscoresToPascalCase(method.Name), GetClassName(method.InputType), NameHelpers.UnderscoresToCamelCase(method.InputType.Name));
+ }
+
+ writer.Outdent();
+ writer.WriteLine("}");
+ }
+ }
+
+ class RpcServiceGenerator : ServiceInterfaceGenerator {
+
+ public RpcServiceGenerator(ServiceDescriptor descriptor)
+ : base(descriptor) {
+ }
+
+ public override void Generate(TextGenerator writer)
+ {
+ base.Generate(writer);
+
+ writer.WriteLine();
+
+ // CLIENT Proxy
+ {
+ if (Descriptor.File.CSharpOptions.ClsCompliance)
+ writer.WriteLine("[global::System.CLSCompliant(false)]");
+ writer.WriteLine("{0} partial class {1} : I{1}, pb::IRpcDispatch, global::System.IDisposable {{", ClassAccessLevel, Descriptor.Name);
+ writer.Indent();
+ writer.WriteLine("private readonly bool dispose;");
+ writer.WriteLine("private readonly pb::IRpcDispatch dispatch;");
+
+ writer.WriteLine("public {0}(pb::IRpcDispatch dispatch) : this(dispatch, true) {{", Descriptor.Name);
+ writer.WriteLine("}");
+ writer.WriteLine("public {0}(pb::IRpcDispatch dispatch, bool dispose) {{", Descriptor.Name);
+ writer.WriteLine(" if (null == (this.dispatch = dispatch)) throw new global::System.ArgumentNullException();");
+ writer.WriteLine(" this.dispose = dispose && dispatch is global::System.IDisposable;");
+ writer.WriteLine("}");
+ writer.WriteLine();
+
+ writer.WriteLine("public void Dispose() {");
+ writer.WriteLine(" if (dispose) ((global::System.IDisposable)dispatch).Dispose();");
+ writer.WriteLine("}");
+ writer.WriteLine();
+ writer.WriteLine("TMessage pb::IRpcDispatch.CallMethod<TMessage, TBuilder>(string method, pb::IMessageLite request, pb::IBuilderLite<TMessage, TBuilder> response) {");
+ writer.WriteLine(" return dispatch.CallMethod(method, request, response);");
+ writer.WriteLine("}");
+ writer.WriteLine();
+
+ foreach (MethodDescriptor method in Descriptor.Methods) {
+ writer.WriteLine("public {0} {1}({2} {3}) {{", GetClassName(method.OutputType), NameHelpers.UnderscoresToPascalCase(method.Name), GetClassName(method.InputType), NameHelpers.UnderscoresToCamelCase(method.InputType.Name));
+ writer.WriteLine(" return dispatch.CallMethod(\"{0}\", {1}, {2}.CreateBuilder());",
+ method.Name,
+ NameHelpers.UnderscoresToCamelCase(method.InputType.Name),
+ GetClassName(method.OutputType)
+ );
+ writer.WriteLine("}");
+ writer.WriteLine();
+ }
+ }
+ // SERVER - DISPATCH
+ {
+ if (Descriptor.File.CSharpOptions.ClsCompliance)
+ writer.WriteLine("[global::System.CLSCompliant(false)]");
+ writer.WriteLine("public partial class Dispatch : pb::IRpcDispatch, global::System.IDisposable {");
+ writer.Indent();
+ writer.WriteLine("private readonly bool dispose;");
+ writer.WriteLine("private readonly I{0} implementation;", Descriptor.Name);
+
+ writer.WriteLine("public Dispatch(I{0} implementation) : this(implementation, true) {{", Descriptor.Name);
+ writer.WriteLine("}");
+ writer.WriteLine("public Dispatch(I{0} implementation, bool dispose) {{", Descriptor.Name);
+ writer.WriteLine(" if (null == (this.implementation = implementation)) throw new global::System.ArgumentNullException();");
+ writer.WriteLine(" this.dispose = dispose && implementation is global::System.IDisposable;");
+ writer.WriteLine("}");
+ writer.WriteLine();
+
+ writer.WriteLine("public void Dispose() {");
+ writer.WriteLine(" if (dispose) ((global::System.IDisposable)implementation).Dispose();");
+ writer.WriteLine("}");
+ writer.WriteLine();
+
+ writer.WriteLine("public TMessage CallMethod<TMessage, TBuilder>(string methodName, pb::IMessageLite request, pb::IBuilderLite<TMessage, TBuilder> response)");
+ writer.WriteLine(" where TMessage : IMessageLite<TMessage, TBuilder>");
+ writer.WriteLine(" where TBuilder : IBuilderLite<TMessage, TBuilder> {");
+ writer.Indent();
+ writer.WriteLine("switch(methodName) {");
+ writer.Indent();
+
+ foreach (MethodDescriptor method in Descriptor.Methods) {
+ writer.WriteLine("case \"{0}\": return response.MergeFrom(implementation.{1}(({2})request)).Build();", method.Name, NameHelpers.UnderscoresToPascalCase(method.Name), GetClassName(method.InputType));
+ }
+ writer.WriteLine("default: throw new global::System.MissingMethodException(typeof(ISearchService).FullName, methodName);");
+ writer.Outdent();
+ writer.WriteLine("}");//end switch
+ writer.Outdent();
+ writer.WriteLine("}");//end invoke
+ writer.Outdent();
+ writer.WriteLine("}");//end server
+ }
+ // SERVER - STUB
+ {
+ if (Descriptor.File.CSharpOptions.ClsCompliance)
+ writer.WriteLine("[global::System.CLSCompliant(false)]");
+ writer.WriteLine("public partial class ServerStub : pb::IRpcServerStub, global::System.IDisposable {");
+ writer.Indent();
+ writer.WriteLine("private readonly bool dispose;");
+ writer.WriteLine("private readonly pb::IRpcDispatch implementation;", Descriptor.Name);
+
+ writer.WriteLine("public ServerStub(I{0} implementation) : this(implementation, true) {{", Descriptor.Name);
+ writer.WriteLine("}");
+ writer.WriteLine("public ServerStub(I{0} implementation, bool dispose) : this(new Dispatch(implementation, dispose), dispose) {{", Descriptor.Name);
+ writer.WriteLine("}");
+
+ writer.WriteLine("public ServerStub(pb::IRpcDispatch implementation) : this(implementation, true) {");
+ writer.WriteLine("}");
+ writer.WriteLine("public ServerStub(pb::IRpcDispatch implementation, bool dispose) {");
+ writer.WriteLine(" if (null == (this.implementation = implementation)) throw new global::System.ArgumentNullException();");
+ writer.WriteLine(" this.dispose = dispose && implementation is global::System.IDisposable;");
+ writer.WriteLine("}");
+ writer.WriteLine();
+
+ writer.WriteLine("public void Dispose() {");
+ writer.WriteLine(" if (dispose) ((global::System.IDisposable)implementation).Dispose();");
+ writer.WriteLine("}");
+ writer.WriteLine();
+
+ writer.WriteLine("public pb::IMessageLite CallMethod(string methodName, pb::CodedInputStream input, pb::ExtensionRegistry registry) {{", Descriptor.Name);
+ writer.Indent();
+ writer.WriteLine("switch(methodName) {");
+ writer.Indent();
+
+ foreach (MethodDescriptor method in Descriptor.Methods)
+ {
+ writer.WriteLine("case \"{0}\": return implementation.CallMethod(methodName, {1}.ParseFrom(input, registry), {2}.CreateBuilder());", method.Name, GetClassName(method.InputType), GetClassName(method.OutputType));
+ }
+ writer.WriteLine("default: throw new global::System.MissingMethodException(typeof(ISearchService).FullName, methodName);");
+ writer.Outdent();
+ writer.WriteLine("}");//end switch
+ writer.Outdent();
+ writer.WriteLine("}");//end invoke
+ writer.Outdent();
+ writer.WriteLine("}");//end server
+ }
+
+ writer.Outdent();
+ writer.WriteLine("}");
+ }
+ }
+ }
+}