blob: 29c359c539572fdbb74e640140d021977fb68439 [file] [log] [blame]
/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* 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.
*
*/
#include <cctype>
#include <map>
#include <sstream>
#include <vector>
#include "src/compiler/csharp_generator.h"
#include "src/compiler/config.h"
#include "src/compiler/csharp_generator_helpers.h"
#include "src/compiler/csharp_generator.h"
using google::protobuf::compiler::csharp::GetFileNamespace;
using google::protobuf::compiler::csharp::GetClassName;
using google::protobuf::compiler::csharp::GetReflectionClassName;
using grpc::protobuf::FileDescriptor;
using grpc::protobuf::Descriptor;
using grpc::protobuf::ServiceDescriptor;
using grpc::protobuf::MethodDescriptor;
using grpc::protobuf::io::Printer;
using grpc::protobuf::io::StringOutputStream;
using grpc_generator::MethodType;
using grpc_generator::GetCppComments;
using grpc_generator::GetMethodType;
using grpc_generator::METHODTYPE_NO_STREAMING;
using grpc_generator::METHODTYPE_CLIENT_STREAMING;
using grpc_generator::METHODTYPE_SERVER_STREAMING;
using grpc_generator::METHODTYPE_BIDI_STREAMING;
using grpc_generator::StringReplace;
using std::map;
using std::vector;
namespace grpc_csharp_generator {
namespace {
// This function is a massaged version of
// https://github.com/google/protobuf/blob/master/src/google/protobuf/compiler/csharp/csharp_doc_comment.cc
// Currently, we cannot easily reuse the functionality as
// google/protobuf/compiler/csharp/csharp_doc_comment.h is not a public header.
// TODO(jtattermusch): reuse the functionality from google/protobuf.
void GenerateDocCommentBodyImpl(grpc::protobuf::io::Printer* printer, grpc::protobuf::SourceLocation location) {
grpc::string comments = location.leading_comments.empty() ?
location.trailing_comments : location.leading_comments;
if (comments.empty()) {
return;
}
// XML escaping... no need for apostrophes etc as the whole text is going to be a child
// node of a summary element, not part of an attribute.
comments = grpc_generator::StringReplace(comments, "&", "&amp;", true);
comments = grpc_generator::StringReplace(comments, "<", "&lt;", true);
std::vector<grpc::string> lines;
grpc_generator::Split(comments, '\n', &lines);
// TODO: We really should work out which part to put in the summary and which to put in the remarks...
// but that needs to be part of a bigger effort to understand the markdown better anyway.
printer->Print("/// <summary>\n");
bool last_was_empty = false;
// We squash multiple blank lines down to one, and remove any trailing blank lines. We need
// to preserve the blank lines themselves, as this is relevant in the markdown.
// Note that we can't remove leading or trailing whitespace as *that's* relevant in markdown too.
// (We don't skip "just whitespace" lines, either.)
for (std::vector<grpc::string>::iterator it = lines.begin(); it != lines.end(); ++it) {
grpc::string line = *it;
if (line.empty()) {
last_was_empty = true;
} else {
if (last_was_empty) {
printer->Print("///\n");
}
last_was_empty = false;
printer->Print("/// $line$\n", "line", *it);
}
}
printer->Print("/// </summary>\n");
}
template <typename DescriptorType>
void GenerateDocCommentBody(
grpc::protobuf::io::Printer* printer, const DescriptorType* descriptor) {
grpc::protobuf::SourceLocation location;
if (descriptor->GetSourceLocation(&location)) {
GenerateDocCommentBodyImpl(printer, location);
}
}
std::string GetServiceClassName(const ServiceDescriptor* service) {
return service->name();
}
std::string GetClientInterfaceName(const ServiceDescriptor* service) {
return "I" + service->name() + "Client";
}
std::string GetClientClassName(const ServiceDescriptor* service) {
return service->name() + "Client";
}
std::string GetServerInterfaceName(const ServiceDescriptor* service) {
return "I" + service->name();
}
std::string GetServerClassName(const ServiceDescriptor* service) {
return service->name() + "Base";
}
std::string GetCSharpMethodType(MethodType method_type) {
switch (method_type) {
case METHODTYPE_NO_STREAMING:
return "MethodType.Unary";
case METHODTYPE_CLIENT_STREAMING:
return "MethodType.ClientStreaming";
case METHODTYPE_SERVER_STREAMING:
return "MethodType.ServerStreaming";
case METHODTYPE_BIDI_STREAMING:
return "MethodType.DuplexStreaming";
}
GOOGLE_LOG(FATAL)<< "Can't get here.";
return "";
}
std::string GetServiceNameFieldName() {
return "__ServiceName";
}
std::string GetMarshallerFieldName(const Descriptor *message) {
return "__Marshaller_" + message->name();
}
std::string GetMethodFieldName(const MethodDescriptor *method) {
return "__Method_" + method->name();
}
std::string GetMethodRequestParamMaybe(const MethodDescriptor *method,
bool invocation_param=false) {
if (method->client_streaming()) {
return "";
}
if (invocation_param) {
return "request, ";
}
return GetClassName(method->input_type()) + " request, ";
}
std::string GetAccessLevel(bool internal_access) {
return internal_access ? "internal" : "public";
}
std::string GetMethodReturnTypeClient(const MethodDescriptor *method) {
switch (GetMethodType(method)) {
case METHODTYPE_NO_STREAMING:
return "AsyncUnaryCall<" + GetClassName(method->output_type()) + ">";
case METHODTYPE_CLIENT_STREAMING:
return "AsyncClientStreamingCall<" + GetClassName(method->input_type())
+ ", " + GetClassName(method->output_type()) + ">";
case METHODTYPE_SERVER_STREAMING:
return "AsyncServerStreamingCall<" + GetClassName(method->output_type())
+ ">";
case METHODTYPE_BIDI_STREAMING:
return "AsyncDuplexStreamingCall<" + GetClassName(method->input_type())
+ ", " + GetClassName(method->output_type()) + ">";
}
GOOGLE_LOG(FATAL)<< "Can't get here.";
return "";
}
std::string GetMethodRequestParamServer(const MethodDescriptor *method) {
switch (GetMethodType(method)) {
case METHODTYPE_NO_STREAMING:
case METHODTYPE_SERVER_STREAMING:
return GetClassName(method->input_type()) + " request";
case METHODTYPE_CLIENT_STREAMING:
case METHODTYPE_BIDI_STREAMING:
return "IAsyncStreamReader<" + GetClassName(method->input_type())
+ "> requestStream";
}
GOOGLE_LOG(FATAL)<< "Can't get here.";
return "";
}
std::string GetMethodReturnTypeServer(const MethodDescriptor *method) {
switch (GetMethodType(method)) {
case METHODTYPE_NO_STREAMING:
case METHODTYPE_CLIENT_STREAMING:
return "global::System.Threading.Tasks.Task<" + GetClassName(method->output_type()) + ">";
case METHODTYPE_SERVER_STREAMING:
case METHODTYPE_BIDI_STREAMING:
return "global::System.Threading.Tasks.Task";
}
GOOGLE_LOG(FATAL)<< "Can't get here.";
return "";
}
std::string GetMethodResponseStreamMaybe(const MethodDescriptor *method) {
switch (GetMethodType(method)) {
case METHODTYPE_NO_STREAMING:
case METHODTYPE_CLIENT_STREAMING:
return "";
case METHODTYPE_SERVER_STREAMING:
case METHODTYPE_BIDI_STREAMING:
return ", IServerStreamWriter<" + GetClassName(method->output_type())
+ "> responseStream";
}
GOOGLE_LOG(FATAL)<< "Can't get here.";
return "";
}
// Gets vector of all messages used as input or output types.
std::vector<const Descriptor*> GetUsedMessages(
const ServiceDescriptor *service) {
std::set<const Descriptor*> descriptor_set;
std::vector<const Descriptor*> result; // vector is to maintain stable ordering
for (int i = 0; i < service->method_count(); i++) {
const MethodDescriptor *method = service->method(i);
if (descriptor_set.find(method->input_type()) == descriptor_set.end()) {
descriptor_set.insert(method->input_type());
result.push_back(method->input_type());
}
if (descriptor_set.find(method->output_type()) == descriptor_set.end()) {
descriptor_set.insert(method->output_type());
result.push_back(method->output_type());
}
}
return result;
}
void GenerateMarshallerFields(Printer* out, const ServiceDescriptor *service) {
std::vector<const Descriptor*> used_messages = GetUsedMessages(service);
for (size_t i = 0; i < used_messages.size(); i++) {
const Descriptor *message = used_messages[i];
out->Print(
"static readonly Marshaller<$type$> $fieldname$ = Marshallers.Create((arg) => global::Google.Protobuf.MessageExtensions.ToByteArray(arg), $type$.Parser.ParseFrom);\n",
"fieldname", GetMarshallerFieldName(message), "type",
GetClassName(message));
}
out->Print("\n");
}
void GenerateStaticMethodField(Printer* out, const MethodDescriptor *method) {
out->Print(
"static readonly Method<$request$, $response$> $fieldname$ = new Method<$request$, $response$>(\n",
"fieldname", GetMethodFieldName(method), "request",
GetClassName(method->input_type()), "response",
GetClassName(method->output_type()));
out->Indent();
out->Indent();
out->Print("$methodtype$,\n", "methodtype",
GetCSharpMethodType(GetMethodType(method)));
out->Print("$servicenamefield$,\n", "servicenamefield",
GetServiceNameFieldName());
out->Print("\"$methodname$\",\n", "methodname", method->name());
out->Print("$requestmarshaller$,\n", "requestmarshaller",
GetMarshallerFieldName(method->input_type()));
out->Print("$responsemarshaller$);\n", "responsemarshaller",
GetMarshallerFieldName(method->output_type()));
out->Print("\n");
out->Outdent();
out->Outdent();
}
void GenerateServiceDescriptorProperty(Printer* out, const ServiceDescriptor *service) {
std::ostringstream index;
index << service->index();
out->Print("/// <summary>Service descriptor</summary>\n");
out->Print("public static global::Google.Protobuf.Reflection.ServiceDescriptor Descriptor\n");
out->Print("{\n");
out->Print(" get { return $umbrella$.Descriptor.Services[$index$]; }\n",
"umbrella", GetReflectionClassName(service->file()), "index",
index.str());
out->Print("}\n");
out->Print("\n");
}
void GenerateClientInterface(Printer* out, const ServiceDescriptor *service) {
out->Print("/// <summary>Client for $servicename$</summary>\n",
"servicename", GetServiceClassName(service));
out->Print("[System.Obsolete(\"Client side interfaced will be removed "
"in the next release. Use client class directly.\")]\n");
out->Print("public interface $name$\n", "name",
GetClientInterfaceName(service));
out->Print("{\n");
out->Indent();
for (int i = 0; i < service->method_count(); i++) {
const MethodDescriptor *method = service->method(i);
MethodType method_type = GetMethodType(method);
if (method_type == METHODTYPE_NO_STREAMING) {
// unary calls have an extra synchronous stub method
GenerateDocCommentBody(out, method);
out->Print(
"$response$ $methodname$($request$ request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));\n",
"methodname", method->name(), "request",
GetClassName(method->input_type()), "response",
GetClassName(method->output_type()));
// overload taking CallOptions as a param
GenerateDocCommentBody(out, method);
out->Print(
"$response$ $methodname$($request$ request, CallOptions options);\n",
"methodname", method->name(), "request",
GetClassName(method->input_type()), "response",
GetClassName(method->output_type()));
}
std::string method_name = method->name();
if (method_type == METHODTYPE_NO_STREAMING) {
method_name += "Async"; // prevent name clash with synchronous method.
}
GenerateDocCommentBody(out, method);
out->Print(
"$returntype$ $methodname$($request_maybe$Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));\n",
"methodname", method_name, "request_maybe",
GetMethodRequestParamMaybe(method), "returntype",
GetMethodReturnTypeClient(method));
// overload taking CallOptions as a param
GenerateDocCommentBody(out, method);
out->Print(
"$returntype$ $methodname$($request_maybe$CallOptions options);\n",
"methodname", method_name, "request_maybe",
GetMethodRequestParamMaybe(method), "returntype",
GetMethodReturnTypeClient(method));
}
out->Outdent();
out->Print("}\n");
out->Print("\n");
}
void GenerateServerInterface(Printer* out, const ServiceDescriptor *service) {
out->Print("/// <summary>Interface of server-side implementations of $servicename$</summary>\n",
"servicename", GetServiceClassName(service));
out->Print("[System.Obsolete(\"Service implementations should inherit"
" from the generated abstract base class instead.\")]\n");
out->Print("public interface $name$\n", "name",
GetServerInterfaceName(service));
out->Print("{\n");
out->Indent();
for (int i = 0; i < service->method_count(); i++) {
const MethodDescriptor *method = service->method(i);
GenerateDocCommentBody(out, method);
out->Print(
"$returntype$ $methodname$($request$$response_stream_maybe$, "
"ServerCallContext context);\n",
"methodname", method->name(), "returntype",
GetMethodReturnTypeServer(method), "request",
GetMethodRequestParamServer(method), "response_stream_maybe",
GetMethodResponseStreamMaybe(method));
}
out->Outdent();
out->Print("}\n");
out->Print("\n");
}
void GenerateServerClass(Printer* out, const ServiceDescriptor *service) {
out->Print("/// <summary>Base class for server-side implementations of $servicename$</summary>\n",
"servicename", GetServiceClassName(service));
out->Print("public abstract class $name$\n", "name",
GetServerClassName(service));
out->Print("{\n");
out->Indent();
for (int i = 0; i < service->method_count(); i++) {
const MethodDescriptor *method = service->method(i);
GenerateDocCommentBody(out, method);
out->Print(
"public virtual $returntype$ $methodname$($request$$response_stream_maybe$, "
"ServerCallContext context)\n",
"methodname", method->name(), "returntype",
GetMethodReturnTypeServer(method), "request",
GetMethodRequestParamServer(method), "response_stream_maybe",
GetMethodResponseStreamMaybe(method));
out->Print("{\n");
out->Indent();
out->Print("throw new RpcException("
"new Status(StatusCode.Unimplemented, \"\"));\n");
out->Outdent();
out->Print("}\n\n");
}
out->Outdent();
out->Print("}\n");
out->Print("\n");
}
void GenerateClientStub(Printer* out, const ServiceDescriptor *service) {
out->Print("/// <summary>Client for $servicename$</summary>\n",
"servicename", GetServiceClassName(service));
out->Print("#pragma warning disable 0618\n");
out->Print(
"public class $name$ : ClientBase<$name$>, $interface$\n",
"name", GetClientClassName(service),
"interface", GetClientInterfaceName(service));
out->Print("#pragma warning restore 0618\n");
out->Print("{\n");
out->Indent();
// constructors
out->Print("public $name$(Channel channel) : base(channel)\n",
"name", GetClientClassName(service));
out->Print("{\n");
out->Print("}\n");
out->Print("public $name$(CallInvoker callInvoker) : base(callInvoker)\n",
"name", GetClientClassName(service));
out->Print("{\n");
out->Print("}\n");
out->Print("///<summary>Protected parameterless constructor to allow creation"
" of test doubles.</summary>\n");
out->Print("protected $name$() : base()\n",
"name", GetClientClassName(service));
out->Print("{\n");
out->Print("}\n");
out->Print("///<summary>Protected constructor to allow creation of configured"
" clients.</summary>\n");
out->Print("protected $name$(ClientBaseConfiguration configuration)"
" : base(configuration)\n",
"name", GetClientClassName(service));
out->Print("{\n");
out->Print("}\n\n");
for (int i = 0; i < service->method_count(); i++) {
const MethodDescriptor *method = service->method(i);
MethodType method_type = GetMethodType(method);
if (method_type == METHODTYPE_NO_STREAMING) {
// unary calls have an extra synchronous stub method
GenerateDocCommentBody(out, method);
out->Print("public virtual $response$ $methodname$($request$ request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))\n",
"methodname", method->name(), "request",
GetClassName(method->input_type()), "response",
GetClassName(method->output_type()));
out->Print("{\n");
out->Indent();
out->Print("return $methodname$(request, new CallOptions(headers, deadline, cancellationToken));\n",
"methodname", method->name());
out->Outdent();
out->Print("}\n");
// overload taking CallOptions as a param
GenerateDocCommentBody(out, method);
out->Print("public virtual $response$ $methodname$($request$ request, CallOptions options)\n",
"methodname", method->name(), "request",
GetClassName(method->input_type()), "response",
GetClassName(method->output_type()));
out->Print("{\n");
out->Indent();
out->Print("return CallInvoker.BlockingUnaryCall($methodfield$, null, options, request);\n",
"methodfield", GetMethodFieldName(method));
out->Outdent();
out->Print("}\n");
}
std::string method_name = method->name();
if (method_type == METHODTYPE_NO_STREAMING) {
method_name += "Async"; // prevent name clash with synchronous method.
}
GenerateDocCommentBody(out, method);
out->Print(
"public virtual $returntype$ $methodname$($request_maybe$Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken))\n",
"methodname", method_name, "request_maybe",
GetMethodRequestParamMaybe(method), "returntype",
GetMethodReturnTypeClient(method));
out->Print("{\n");
out->Indent();
out->Print("return $methodname$($request_maybe$new CallOptions(headers, deadline, cancellationToken));\n",
"methodname", method_name,
"request_maybe", GetMethodRequestParamMaybe(method, true));
out->Outdent();
out->Print("}\n");
// overload taking CallOptions as a param
GenerateDocCommentBody(out, method);
out->Print(
"public virtual $returntype$ $methodname$($request_maybe$CallOptions options)\n",
"methodname", method_name, "request_maybe",
GetMethodRequestParamMaybe(method), "returntype",
GetMethodReturnTypeClient(method));
out->Print("{\n");
out->Indent();
switch (GetMethodType(method)) {
case METHODTYPE_NO_STREAMING:
out->Print("return CallInvoker.AsyncUnaryCall($methodfield$, null, options, request);\n",
"methodfield", GetMethodFieldName(method));
break;
case METHODTYPE_CLIENT_STREAMING:
out->Print("return CallInvoker.AsyncClientStreamingCall($methodfield$, null, options);\n",
"methodfield", GetMethodFieldName(method));
break;
case METHODTYPE_SERVER_STREAMING:
out->Print(
"return CallInvoker.AsyncServerStreamingCall($methodfield$, null, options, request);\n",
"methodfield", GetMethodFieldName(method));
break;
case METHODTYPE_BIDI_STREAMING:
out->Print("return CallInvoker.AsyncDuplexStreamingCall($methodfield$, null, options);\n",
"methodfield", GetMethodFieldName(method));
break;
default:
GOOGLE_LOG(FATAL)<< "Can't get here.";
}
out->Outdent();
out->Print("}\n");
}
// override NewInstance method
out->Print("protected override $name$ NewInstance(ClientBaseConfiguration configuration)\n",
"name", GetClientClassName(service));
out->Print("{\n");
out->Indent();
out->Print("return new $name$(configuration);\n",
"name", GetClientClassName(service));
out->Outdent();
out->Print("}\n");
out->Outdent();
out->Print("}\n");
out->Print("\n");
}
void GenerateBindServiceMethod(Printer* out, const ServiceDescriptor *service,
bool use_server_class) {
out->Print(
"/// <summary>Creates service definition that can be registered with a server</summary>\n");
out->Print("#pragma warning disable 0618\n");
out->Print(
"public static ServerServiceDefinition BindService($interface$ serviceImpl)\n",
"interface", use_server_class ? GetServerClassName(service) :
GetServerInterfaceName(service));
out->Print("#pragma warning restore 0618\n");
out->Print("{\n");
out->Indent();
out->Print(
"return ServerServiceDefinition.CreateBuilder($servicenamefield$)\n",
"servicenamefield", GetServiceNameFieldName());
out->Indent();
out->Indent();
for (int i = 0; i < service->method_count(); i++) {
const MethodDescriptor *method = service->method(i);
out->Print(".AddMethod($methodfield$, serviceImpl.$methodname$)",
"methodfield", GetMethodFieldName(method), "methodname",
method->name());
if (i == service->method_count() - 1) {
out->Print(".Build();");
}
out->Print("\n");
}
out->Outdent();
out->Outdent();
out->Outdent();
out->Print("}\n");
out->Print("\n");
}
void GenerateNewStubMethods(Printer* out, const ServiceDescriptor *service) {
out->Print("/// <summary>Creates a new client for $servicename$</summary>\n",
"servicename", GetServiceClassName(service));
out->Print("public static $classname$ NewClient(Channel channel)\n",
"classname", GetClientClassName(service));
out->Print("{\n");
out->Indent();
out->Print("return new $classname$(channel);\n", "classname",
GetClientClassName(service));
out->Outdent();
out->Print("}\n");
out->Print("\n");
}
void GenerateService(Printer* out, const ServiceDescriptor *service,
bool generate_client, bool generate_server,
bool internal_access) {
GenerateDocCommentBody(out, service);
out->Print("$access_level$ static class $classname$\n", "access_level",
GetAccessLevel(internal_access), "classname",
GetServiceClassName(service));
out->Print("{\n");
out->Indent();
out->Print("static readonly string $servicenamefield$ = \"$servicename$\";\n",
"servicenamefield", GetServiceNameFieldName(), "servicename",
service->full_name());
out->Print("\n");
GenerateMarshallerFields(out, service);
for (int i = 0; i < service->method_count(); i++) {
GenerateStaticMethodField(out, service->method(i));
}
GenerateServiceDescriptorProperty(out, service);
if (generate_client) {
GenerateClientInterface(out, service);
}
if (generate_server) {
GenerateServerInterface(out, service);
GenerateServerClass(out, service);
}
if (generate_client) {
GenerateClientStub(out, service);
GenerateNewStubMethods(out, service);
}
if (generate_server) {
GenerateBindServiceMethod(out, service, false);
GenerateBindServiceMethod(out, service, true);
}
out->Outdent();
out->Print("}\n");
}
} // anonymous namespace
grpc::string GetServices(const FileDescriptor *file, bool generate_client,
bool generate_server, bool internal_access) {
grpc::string output;
{
// Scope the output stream so it closes and finalizes output to the string.
StringOutputStream output_stream(&output);
Printer out(&output_stream, '$');
// Don't write out any output if there no services, to avoid empty service
// files being generated for proto files that don't declare any.
if (file->service_count() == 0) {
return output;
}
// Write out a file header.
out.Print("// Generated by the protocol buffer compiler. DO NOT EDIT!\n");
out.Print("// source: $filename$\n", "filename", file->name());
// use C++ style as there are no file-level XML comments in .NET
grpc::string leading_comments = GetCppComments(file, true);
if (!leading_comments.empty()) {
out.Print("// Original file comments:\n");
out.Print(leading_comments.c_str());
}
out.Print("#region Designer generated code\n");
out.Print("\n");
out.Print("using System;\n");
out.Print("using System.Threading;\n");
out.Print("using System.Threading.Tasks;\n");
out.Print("using Grpc.Core;\n");
out.Print("\n");
out.Print("namespace $namespace$ {\n", "namespace", GetFileNamespace(file));
out.Indent();
for (int i = 0; i < file->service_count(); i++) {
GenerateService(&out, file->service(i), generate_client, generate_server,
internal_access);
}
out.Outdent();
out.Print("}\n");
out.Print("#endregion\n");
}
return output;
}
} // namespace grpc_csharp_generator