// Protocol Buffers - Google's data interchange format
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#ifndef GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_MAP_FIELD_H__
#define GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_MAP_FIELD_H__

#include <memory>
#include <string>

#include "absl/container/btree_set.h"
#include "google/protobuf/compiler/objectivec/field.h"

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

class MapFieldGenerator : public RepeatedFieldGenerator {
  friend FieldGenerator* FieldGenerator::Make(const FieldDescriptor* field);

 public:
  void FinishInitialization() override;

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

 protected:
  explicit MapFieldGenerator(const FieldDescriptor* descriptor);
  ~MapFieldGenerator() override = default;

  void DetermineObjectiveCClassDefinitions(
      absl::btree_set<std::string>* fwd_decls) const override;
  void DetermineForwardDeclarations(absl::btree_set<std::string>* fwd_decls,
                                    bool include_external_types) const override;

 private:
  std::unique_ptr<FieldGenerator> value_field_generator_;
};

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

#endif  // GOOGLE_PROTOBUF_COMPILER_OBJECTIVEC_MAP_FIELD_H__