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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// 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.

#ifndef GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_ENUM_H__
#define GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_ENUM_H__

#include <string>
#include <vector>

#include "y_absl/container/flat_hash_set.h"
#include "google/protobuf/descriptor.h"
#include "google/protobuf/io/printer.h"

namespace google {
namespace protobuf {
namespace compiler {
namespace objectivec {

class EnumGenerator {
 public:
  explicit EnumGenerator(const EnumDescriptor* descriptor);
  ~EnumGenerator() = default;

  EnumGenerator(const EnumGenerator&) = delete;
  EnumGenerator& operator=(const EnumGenerator&) = delete;

  void GenerateHeader(io::Printer* printer) const;
  void GenerateSource(io::Printer* printer) const;

  const TProtoStringType& name() const { return name_; }

 private:
  const EnumDescriptor* descriptor_;
  std::vector<const EnumValueDescriptor*> base_values_;
  std::vector<const EnumValueDescriptor*> all_values_;
  y_absl::flat_hash_set<const EnumValueDescriptor*> alias_values_to_skip_;
  const TProtoStringType name_;
};

}  // namespace objectivec
}  // namespace compiler
}  // namespace protobuf
}  // namespace google

#endif  // GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_ENUM_H__