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/*
*
* Copyright 2015 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.
*
*/
#ifndef GRPC_INTERNAL_COMPILER_OBJECTIVE_C_GENERATOR_HELPERS_H
#define GRPC_INTERNAL_COMPILER_OBJECTIVE_C_GENERATOR_HELPERS_H
#include <map>
#include <google/protobuf/compiler/objectivec/objectivec_helpers.h>
#include "src/compiler/config.h"
#include "src/compiler/generator_helpers.h"
namespace grpc_objective_c_generator {
using ::grpc::protobuf::FileDescriptor;
using ::grpc::protobuf::MethodDescriptor;
using ::grpc::protobuf::ServiceDescriptor;
using ::TString;
inline TString MessageHeaderName(const FileDescriptor* file) {
return google::protobuf::compiler::objectivec::FilePath(file) + ".pbobjc.h";
}
inline bool AsciiIsUpper(char c) { return c >= 'A' && c <= 'Z'; }
inline ::TString ServiceClassName(const ServiceDescriptor* service) {
const FileDescriptor* file = service->file();
::TString prefix =
google::protobuf::compiler::objectivec::FileClassPrefix(file);
::TString class_name = service->name();
// We add the prefix in the cases where the string is missing a prefix.
// We define "missing a prefix" as where 'input':
// a) Doesn't start with the prefix or
// b) Isn't equivalent to the prefix or
// c) Has the prefix, but the letter after the prefix is lowercase
// This is the same semantics as the Objective-C protoc.
// https://github.com/protocolbuffers/protobuf/blob/c160ae52a91ca4c76936531d68cc846f8230dbb1/src/google/protobuf/compiler/objectivec/objectivec_helpers.cc#L389
if (class_name.rfind(prefix, 0) == 0) {
if (class_name.length() == prefix.length() ||
!AsciiIsUpper(class_name[prefix.length()])) {
return prefix + class_name;
} else {
return class_name;
}
} else {
return prefix + class_name;
}
}
inline ::TString LocalImport(const ::TString& import) {
return ::TString("#import \"" + import + "\"\n");
}
inline ::TString FrameworkImport(const ::TString& import,
const ::TString& framework) {
// Flattens the directory structure: grab the file name only
std::size_t pos = import.rfind("/");
// If pos is npos, pos + 1 is 0, which gives us the entire string,
// so there's no need to check that
::TString filename = import.substr(pos + 1, import.size() - (pos + 1));
return ::TString("#import <" + framework + "/" + filename + ">\n");
}
inline ::TString SystemImport(const ::TString& import) {
return ::TString("#import <" + import + ">\n");
}
inline ::TString PreprocConditional(::TString symbol, bool invert) {
return invert ? "!defined(" + symbol + ") || !" + symbol
: "defined(" + symbol + ") && " + symbol;
}
inline ::TString PreprocIf(const ::TString& symbol,
const ::TString& if_true) {
return ::TString("#if " + PreprocConditional(symbol, false) + "\n" +
if_true + "#endif\n");
}
inline ::TString PreprocIfNot(const ::TString& symbol,
const ::TString& if_true) {
return ::TString("#if " + PreprocConditional(symbol, true) + "\n" +
if_true + "#endif\n");
}
inline ::TString PreprocIfElse(const ::TString& symbol,
const ::TString& if_true,
const ::TString& if_false) {
return ::TString("#if " + PreprocConditional(symbol, false) + "\n" +
if_true + "#else\n" + if_false + "#endif\n");
}
inline ::TString PreprocIfNotElse(const ::TString& symbol,
const ::TString& if_true,
const ::TString& if_false) {
return ::TString("#if " + PreprocConditional(symbol, true) + "\n" +
if_true + "#else\n" + if_false + "#endif\n");
}
inline bool ShouldIncludeMethod(const MethodDescriptor* method) {
#ifdef OBJC_SKIP_METHODS_WITHOUT_MESSAGE_PREFIX
return (method->input_type()->file()->options().has_objc_class_prefix() &&
method->output_type()->file()->options().has_objc_class_prefix());
#else
(void)method; // to silence the unused warning for method.
return true;
#endif
}
} // namespace grpc_objective_c_generator
#endif // GRPC_INTERNAL_COMPILER_OBJECTIVE_C_GENERATOR_HELPERS_H
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