text: #ifndef STAN_LANG_GENERATOR_GENERATE_QUOTED_STRING_HPP
  #define STAN_LANG_GENERATOR_GENERATE_QUOTED_STRING_HPP
  
  #include <ostream>
  #include <string>
  
  namespace stan {
    namespace lang {
  
      /**
       * Print the specified string to the specified output stream,
       * wrapping in double quotes (") and inserting a backslash to
       * escape double quotes, single quotes, and backslashes.
       *
       * @param[in] s String to output
       * @param[in,out] o Output stream
       */
      void generate_quoted_string(const std::string& s, std::ostream& o) {
        o << '"';
        for (size_t i = 0; i < s.size(); ++i) {
          if (s[i] == '"' || s[i] == '\\' || s[i] == '\'' )
            o << '\\';
          o << s[i];
        }
        o << '"';
      }
  
  
  
    }
  }
  #endif
  