xo-unit: refactor: + currency/price abbrevs + separate abbrev .hpp

This commit is contained in:
Roland Conybeare 2024-04-22 16:03:17 -04:00
commit 1d175ee3f5
3 changed files with 211 additions and 163 deletions

View file

@ -3,168 +3,13 @@
#pragma once
#include "native_unit.hpp"
#include "basis_unit_abbrev.hpp"
#include "xo/ratio/ratio.hpp"
#include <algorithm>
#include <vector>
namespace xo {
namespace qty {
using basis_unit2_abbrev_type = flatstring<16>;
using scalefactor_ratio_type = xo::ratio::ratio<std::int64_t>;
namespace abbrev {
// ----- units for dim::mass -----
static
constexpr basis_unit2_abbrev_type
mass_unit2_abbrev(const scalefactor_ratio_type & scalefactor)
{
if (scalefactor.num() == 1) {
switch (scalefactor.den()) {
case 1:
return basis_unit2_abbrev_type::from_chars("g");
case 1000:
return basis_unit2_abbrev_type::from_chars("mg");
case 1000000:
return basis_unit2_abbrev_type::from_chars("ug");
case 1000000000:
return basis_unit2_abbrev_type::from_chars("ng");
}
}
if (scalefactor.den() == 1) {
switch (scalefactor.num()) {
case 1000:
return basis_unit2_abbrev_type::from_chars("kg");
case 1000000:
return basis_unit2_abbrev_type::from_chars("t");
case 1000000000:
return basis_unit2_abbrev_type::from_chars("kt");
}
}
/* e.g. unit of '1000 grams' will have abbrev '1000g' in absence
* of a specialization for scaled_native_unit_abbrev
*/
return (basis_unit2_abbrev_type::from_flatstring
(flatstring_concat
(scalefactor.to_str<basis_unit2_abbrev_type::fixed_capacity>(),
native_unit2_v[static_cast<std::uint32_t>(dim::mass)].abbrev_str())));
}
// ----- units for dim::distance -----
static
constexpr basis_unit2_abbrev_type
distance_unit2_abbrev(const scalefactor_ratio_type & scalefactor)
{
if (scalefactor.num() == 1) {
switch (scalefactor.den()) {
case 1:
return basis_unit2_abbrev_type::from_chars("m");
case 1000:
return basis_unit2_abbrev_type::from_chars("mm");
case 1000000:
return basis_unit2_abbrev_type::from_chars("um");
case 1000000000:
return basis_unit2_abbrev_type::from_chars("nm");
}
}
if (scalefactor.den() == 1) {
switch (scalefactor.num()) {
case 1000:
return basis_unit2_abbrev_type::from_chars("km");
case 1000000:
return basis_unit2_abbrev_type::from_chars("Mm");
case 1000000000:
return basis_unit2_abbrev_type::from_chars("Gm");
}
}
/* e.g. unit of '1000 grams' will have abbrev '1000g' in absence
* of a specialization for scaled_native_unit_abbrev
*/
return (basis_unit2_abbrev_type::from_flatstring
(flatstring_concat
(scalefactor.to_str<basis_unit2_abbrev_type::fixed_capacity>(),
native_unit2_v[static_cast<std::uint32_t>(dim::mass)].abbrev_str())));
}
// ----- units for dim::time -----
static
constexpr basis_unit2_abbrev_type
time_unit2_abbrev(const scalefactor_ratio_type & scalefactor)
{
if (scalefactor.num() == 1) {
switch (scalefactor.den()) {
case 1:
return basis_unit2_abbrev_type::from_chars("s");
case 1000:
return basis_unit2_abbrev_type::from_chars("ms");
case 1000000:
return basis_unit2_abbrev_type::from_chars("us");
case 1000000000:
return basis_unit2_abbrev_type::from_chars("ns");
}
}
if (scalefactor.den() == 1) {
switch (scalefactor.num()) {
case 60:
return basis_unit2_abbrev_type::from_chars("min");
case 3600:
return basis_unit2_abbrev_type::from_chars("hr");
case 24*3600:
return basis_unit2_abbrev_type::from_chars("dy");
case 7*24*3600:
return basis_unit2_abbrev_type::from_chars("wk");
case 30*24*3600:
return basis_unit2_abbrev_type::from_chars("mo");
case 250*24*3600:
return basis_unit2_abbrev_type::from_chars("yr250");
case 360*24*3600:
return basis_unit2_abbrev_type::from_chars("yr360");
case 365*24*3600:
return basis_unit2_abbrev_type::from_chars("yr365");
}
}
/* e.g. unit of '1000 grams' will have abbrev '1000g' in absence
* of a specialization for scaled_native_unit_abbrev
*/
return (basis_unit2_abbrev_type::from_flatstring
(flatstring_concat
(scalefactor.to_str<basis_unit2_abbrev_type::fixed_capacity>(),
native_unit2_v[static_cast<std::uint32_t>(dim::mass)].abbrev_str())));
}
static
constexpr basis_unit2_abbrev_type
basis_unit2_abbrev(dim native_dim,
const scalefactor_ratio_type & scalefactor)
{
switch(native_dim) {
case dim::mass:
return mass_unit2_abbrev(scalefactor);
case dim::distance:
return distance_unit2_abbrev(scalefactor);
case dim::time:
return time_unit2_abbrev(scalefactor);
}
/* e.g. unit of '1000 grams' will have abbrev '1000g' in absence
* of a specialization for scaled_native_unit_abbrev
*/
return (basis_unit2_abbrev_type::from_flatstring
(flatstring_concat
(scalefactor.to_str<basis_unit2_abbrev_type::fixed_capacity>(),
native_unit2_v[static_cast<std::uint32_t>(native_dim)].abbrev_str())));
}
}; /*abbrev*/
/** @class basis_unit2
* @brief A dimensionless multiple of a single natively-specified basis dimension
*