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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <map>
#include <google/protobuf/compiler/php/php_generator.h>
#include "src/compiler/config.h"
#include "src/compiler/generator_helpers.h"
#include "src/compiler/php_generator_helpers.h"
using google::protobuf::compiler::php::GeneratedClassName;
using grpc::protobuf::Descriptor;
using grpc::protobuf::FileDescriptor;
using grpc::protobuf::MethodDescriptor;
using grpc::protobuf::ServiceDescriptor;
using grpc::protobuf::io::Printer;
using grpc::protobuf::io::StringOutputStream;
using std::map;
namespace grpc_php_generator {
namespace {
TString ConvertToPhpNamespace(const TString& name) {
std::vector<TString> tokens = grpc_generator::tokenize(name, ".");
std::ostringstream oss;
for (unsigned int i = 0; i < tokens.size(); i++) {
oss << (i == 0 ? "" : "\\")
<< grpc_generator::CapitalizeFirstLetter(tokens[i]);
}
return oss.str();
}
TString PackageName(const FileDescriptor* file) {
if (file->options().has_php_namespace()) {
return file->options().php_namespace();
} else {
return ConvertToPhpNamespace(file->package());
}
}
TString MessageIdentifierName(const TString& name,
const FileDescriptor* file) {
std::vector<TString> tokens = grpc_generator::tokenize(name, ".");
std::ostringstream oss;
if (PackageName(file) != "") {
oss << PackageName(file) << "\\";
}
oss << grpc_generator::CapitalizeFirstLetter(tokens[tokens.size() - 1]);
return oss.str();
}
void PrintMethod(const MethodDescriptor* method, Printer* out) {
const Descriptor* input_type = method->input_type();
const Descriptor* output_type = method->output_type();
map<TString, TString> vars;
vars["service_name"] = method->service()->full_name();
vars["name"] = method->name();
vars["input_type_id"] =
MessageIdentifierName(GeneratedClassName(input_type), input_type->file());
vars["output_type_id"] = MessageIdentifierName(
GeneratedClassName(output_type), output_type->file());
out->Print("/**\n");
out->Print(GetPHPComments(method, " *").c_str());
if (method->client_streaming()) {
if (method->server_streaming()) {
vars["return_type_id"] = "\\Grpc\\BidiStreamingCall";
} else {
vars["return_type_id"] = "\\Grpc\\ClientStreamingCall";
}
out->Print(vars,
" * @param array $$metadata metadata\n"
" * @param array $$options call options\n"
" * @return $return_type_id$\n */\n"
"public function $name$($$metadata = [], "
"$$options = []) {\n");
out->Indent();
out->Indent();
if (method->server_streaming()) {
out->Print("return $$this->_bidiRequest(");
} else {
out->Print("return $$this->_clientStreamRequest(");
}
out->Print(vars,
"'/$service_name$/$name$',\n"
"['\\$output_type_id$','decode'],\n"
"$$metadata, $$options);\n");
} else {
if (method->server_streaming()) {
vars["return_type_id"] = "\\Grpc\\ServerStreamingCall";
} else {
vars["return_type_id"] = "\\Grpc\\UnaryCall";
}
out->Print(vars,
" * @param \\$input_type_id$ $$argument input argument\n"
" * @param array $$metadata metadata\n"
" * @param array $$options call options\n"
" * @return $return_type_id$\n */\n"
"public function $name$(\\$input_type_id$ $$argument,\n"
" $$metadata = [], $$options = []) {\n");
out->Indent();
out->Indent();
if (method->server_streaming()) {
out->Print("return $$this->_serverStreamRequest(");
} else {
out->Print("return $$this->_simpleRequest(");
}
out->Print(vars,
"'/$service_name$/$name$',\n"
"$$argument,\n"
"['\\$output_type_id$', 'decode'],\n"
"$$metadata, $$options);\n");
}
out->Outdent();
out->Outdent();
out->Print("}\n\n");
}
// Prints out the service descriptor object
void PrintService(const ServiceDescriptor* service,
const TString& class_suffix, Printer* out) {
map<TString, TString> vars;
out->Print("/**\n");
out->Print(GetPHPComments(service, " *").c_str());
out->Print(" */\n");
vars["name"] = GetPHPServiceClassname(service, class_suffix);
out->Print(vars, "class $name$ extends \\Grpc\\BaseStub {\n\n");
out->Indent();
out->Indent();
out->Print(
"/**\n * @param string $$hostname hostname\n"
" * @param array $$opts channel options\n"
" * @param \\Grpc\\Channel $$channel (optional) re-use channel "
"object\n */\n"
"public function __construct($$hostname, $$opts, "
"$$channel = null) {\n");
out->Indent();
out->Indent();
out->Print("parent::__construct($$hostname, $$opts, $$channel);\n");
out->Outdent();
out->Outdent();
out->Print("}\n\n");
for (int i = 0; i < service->method_count(); i++) {
TString method_name =
grpc_generator::LowercaseFirstLetter(service->method(i)->name());
PrintMethod(service->method(i), out);
}
out->Outdent();
out->Outdent();
out->Print("}\n");
}
} // namespace
TString GenerateFile(const FileDescriptor* file,
const ServiceDescriptor* service,
const TString& class_suffix) {
TString output;
{
StringOutputStream output_stream(&output);
Printer out(&output_stream, '$');
out.Print("<?php\n");
out.Print("// GENERATED CODE -- DO NOT EDIT!\n\n");
TString leading_comments = GetPHPComments(file, "//");
if (!leading_comments.empty()) {
out.Print("// Original file comments:\n");
out.PrintRaw(leading_comments.c_str());
}
map<TString, TString> vars;
TString php_namespace = PackageName(file);
vars["package"] = php_namespace;
out.Print(vars, "namespace $package$;\n\n");
PrintService(service, class_suffix, &out);
}
return output;
}
} // namespace grpc_php_generator
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