JRootPrimitiveTypes.hh

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#ifndef __JROOT_PRIMITIVE_TYPES__
#define __JROOT_PRIMITIVE_TYPES__

#include <string>
#include <utility>
#include <vector>

namespace JROOT {}
namespace JPP { using namespace JROOT; }

namespace JROOT {

  struct JRootPrimitiveTypes
  {
    /** Return the type code (used to create primitive leaves in basic
     * Root tree branches) corresponding to the type name.
     *
     * If the type_name does not correspond to a primitive type (known to
     * Root), then an empty string is returned.
     */
    static std::string getTypeCode(const std::string& type_name)
    {
      static std::vector<std::pair<std::string, std::string>> type_codes = {
      {"char[]", "C"},
      {"char", "B"},
      {"unsigned char", "b"},
      {"short", "S"},
      {"unsigned short", "s"},
      {"unsigned int", "i"},
      {"int", "I"},
      {"float", "F"},
      {"Float16_t", "f"},
      {"double", "D"},
      {"Double32_t", "d"},
      {"Long64_t", "L"},
      {"ULong64_t", "l"},
      {"long", "G"},
      {"unsigned long", "g"},
      {"bool", "O"}};
      std::string type_code;
      for (const auto& type2code : type_codes) {
        if (type2code.first == type_name) {
          type_code = type2code.second;
        }
      }
      return type_code;
    }
  };
}  // namespace JROOT

#endif