text: #ifndef dplyr_tools_SymbolString_h
  #define dplyr_tools_SymbolString_h
  
  #include <tools/encoding.h>
  
  namespace dplyr {
  
  class SymbolString  {
  public:
    SymbolString() {}
  
    SymbolString(const char* str) : s(str) {}
  
    SymbolString(const String& other) : s(other) {}
  
    SymbolString(const String::StringProxy& other) : s(other) {}
  
    SymbolString(const String::const_StringProxy& other) : s(other) {}
  
    // Symbols are always encoded in the native encoding (#1950)
    explicit SymbolString(const Symbol& symbol) : s(CHAR(PRINTNAME(symbol)), CE_NATIVE) {}
  
  public:
    const String& get_string() const {
      return s;
    }
  
    const Symbol get_symbol() const {
      return Symbol(Rf_translateChar(s.get_sexp()));
    }
  
    const std::string get_utf8_cstring() const {
      static Environment rlang = Environment::namespace_env("rlang");
      static Function as_string = Function("as_string", rlang);
      SEXP utf8_string = as_string(Rf_lang2(R_QuoteSymbol, get_symbol()));
      return CHAR(STRING_ELT(utf8_string, 0));
    }
  
    bool is_empty() const {
      return s == "";
    }
  
    SEXP get_sexp() const {
      return s.get_sexp();
    }
  
    bool operator==(const SymbolString& other) const {
      return Rf_NonNullStringMatch(get_sexp(), other.get_sexp());
    }
  
  private:
    String s;
  };
  
  }
  
  #endif
  