src/marnav/nmea/vlw.cpp

   1 #include <marnav/nmea/vlw.hpp>
   2 #include <marnav/nmea/io.hpp>
   3 #include "checks.hpp"
   4
   5 namespace marnav
   6 {
   7 namespace nmea
   8 {
   9 constexpr sentence_id vlw::ID;
  10 constexpr const char * vlw::TAG;
  11
  12 vlw::vlw()
  13         : sentence(ID, TAG, talker::integrated_instrumentation)
  14 {
  15 }
  16
  17 vlw::vlw(talker talk, fields::const_iterator first, fields::const_iterator last)
  18         : sentence(ID, TAG, talk)
  19 {
  20         if (std::distance(first, last) != 4)
  21                 throw std::invalid_argument{"invalid number of fields in vlw"};
  22
  23         utils::optional<unit::distance> distance_cum_unit;
  24         utils::optional<unit::distance> distance_reset_unit;
  25
  26         read(*(first + 0), distance_cum_);
  27         read(*(first + 1), distance_cum_unit);
  28         read(*(first + 2), distance_reset_);
  29         read(*(first + 3), distance_reset_unit);
  30
  31         check_value(distance_cum_unit, {unit::distance::nm}, "distance_cum_unit");
  32         check_value(distance_reset_unit, {unit::distance::nm}, "distance_reset_unit");
  33 }
  34
  35 void vlw::set_distance_cum_nm(units::length t) noexcept
  36 {
  37         distance_cum_ = t.get<units::nautical_miles>();
  38 }
  39
  40 void vlw::set_distance_reset_nm(units::length t) noexcept
  41 {
  42         distance_reset_ = t.get<units::nautical_miles>();
  43 }
  44
  45 utils::optional<units::length> vlw::get_distance_cum() const
  46 {
  47         if (!distance_cum_)
  48                 return {};
  49         return {*distance_cum_};
  50 }
  51
  52 utils::optional<units::length> vlw::get_distance_reset() const
  53 {
  54         if (!distance_reset_)
  55                 return {};
  56         return {*distance_reset_};
  57 }
  58
  59 void vlw::append_data_to(std::string & s) const
  60 {
  61         append(s, to_string(distance_cum_));
  62         append(s, to_string_if(unit::distance::nm, distance_cum_));
  63         append(s, to_string(distance_reset_));
  64         append(s, to_string_if(unit::distance::nm, distance_reset_));
  65 }
  66 }
  67 }