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 * Copyright (c) 2009-2021, Google LLC
 * All rights reserved.
 *
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 * 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 LLC 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
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 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef UPB_PROTOS_GENERATOR_GEN_UTILS_H_
#define UPB_PROTOS_GENERATOR_GEN_UTILS_H_

#include "google/protobuf/descriptor.pb.h"
#include "absl/container/flat_hash_map.h"
#include "absl/strings/string_view.h"
#include "google/protobuf/compiler/code_generator.h"
#include "google/protobuf/compiler/plugin.h"
#include "google/protobuf/descriptor.h"
#include "google/protobuf/wire_format.h"
#include "protos_generator/output.h"

namespace protos_generator {

namespace protobuf = ::google::protobuf;

enum class MessageClassType {
  kMessage,
  kMessageCProxy,
  kMessageProxy,
  kMessageAccess,
};

std::string ClassName(const protobuf::Descriptor* descriptor);
std::string QualifiedClassName(const protobuf::Descriptor* descriptor);
std::string QualifiedInternalClassName(const protobuf::Descriptor* descriptor);

inline bool IsMapEntryMessage(const protobuf::Descriptor* descriptor) {
  return descriptor->options().map_entry();
}
std::string CppSourceFilename(const google::protobuf::FileDescriptor* file);
std::string ForwardingHeaderFilename(const google::protobuf::FileDescriptor* file);
std::string UpbCFilename(const google::protobuf::FileDescriptor* file);
std::string CppHeaderFilename(const google::protobuf::FileDescriptor* file);

void WriteStartNamespace(const protobuf::FileDescriptor* file, Output& output);
void WriteEndNamespace(const protobuf::FileDescriptor* file, Output& output);

std::string CppConstType(const protobuf::FieldDescriptor* field);
std::string CppTypeParameterName(const protobuf::FieldDescriptor* field);

std::string MessageBaseType(const protobuf::FieldDescriptor* field,
                            bool is_const);
// Generate protos::Ptr<const Model> to be used in accessors as public
// signatures.
std::string MessagePtrConstType(const protobuf::FieldDescriptor* field,
                                bool is_const);
std::string MessageCProxyType(const protobuf::FieldDescriptor* field,
                              bool is_const);
std::string MessageProxyType(const protobuf::FieldDescriptor* field,
                             bool is_const);

std::vector<const protobuf::EnumDescriptor*> SortedEnums(
    const protobuf::FileDescriptor* file);
std::vector<const protobuf::Descriptor*> SortedMessages(
    const protobuf::FileDescriptor* file);
std::vector<const protobuf::FieldDescriptor*> SortedExtensions(
    const protobuf::FileDescriptor* file);
std::vector<const protobuf::FieldDescriptor*> FieldNumberOrder(
    const protobuf::Descriptor* message);

inline constexpr absl::string_view kNoPackageNamePrefix = "protos_";

}  // namespace protos_generator

#endif  // UPB_PROTOS_GENERATOR_GEN_UTILS_H_