mirror of
https://github.com/rm-dr/daisy
synced 2025-07-01 14:43:30 -07:00
Added build script to generate units
This commit is contained in:
@ -4,8 +4,6 @@ use crate::quantity::Scalar;
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use crate::quantity::Quantity;
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use super::WholeUnit;
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use super::Prefix;
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use super::Unit;
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use super::unit_db;
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#[derive(Debug)]
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@ -18,88 +16,16 @@ pub struct FreeUnit {
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}
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macro_rules! unpack_string {
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(
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$u:expr, $s:expr,
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$( $_:expr ),*
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) => { $s };
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}
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impl ToString for FreeUnit {
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fn to_string(&self) -> String {
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let s = unit_db!(self.whole, unpack_string);
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let s = self.whole.to_string();
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let p = self.prefix.to_string();
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format!("{p}{s}")
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}
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}
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macro_rules! unpack_base_factor {
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(
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$unit:expr,
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$display_string:expr,
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base
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) => { None };
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(
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$unit:expr,
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$display_string:expr,
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float,
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$value:expr,
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$( ($u:expr, $p:expr) ),*
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) => {
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Some(Quantity {
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scalar: Scalar::new_float_from_string($value).unwrap(),
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unit: Unit::from_array(&[
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$(
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(FreeUnit::from_whole($u), Scalar::new_rational($p).unwrap()),
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)*
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(FreeUnit::from_whole($unit), Scalar::new_rational(-1f64).unwrap())
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])
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})
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};
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(
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$unit:expr,
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$display_string:expr,
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rational,
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$value:expr,
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$( ($u:expr, $p:expr) ),*
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) => {
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Some(Quantity {
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scalar: Scalar::new_rational_from_string($value).unwrap(),
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unit: Unit::from_array(&[
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$(
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(FreeUnit::from_whole($u), Scalar::new_rational($p).unwrap()),
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)*
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(FreeUnit::from_whole($unit), Scalar::new_rational(-1f64).unwrap())
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])
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})
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};
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(
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$unit:expr,
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$display_string:expr,
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rational_frac,
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($t:expr, $b:expr),
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$( ($u:expr, $p:expr) ),*
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) => {
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Some(Quantity {
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scalar: Scalar::new_rational_from_frac($t, $b).unwrap(),
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unit: Unit::from_array(&[
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$(
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(FreeUnit::from_whole($u), Scalar::new_rational($p).unwrap()),
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)*
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(FreeUnit::from_whole($unit), Scalar::new_rational(-1f64).unwrap())
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])
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})
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};
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}
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impl FreeUnit {
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pub fn from_whole(whole: WholeUnit) -> FreeUnit {
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return FreeUnit { whole, prefix: Prefix::None }
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@ -113,7 +39,7 @@ impl FreeUnit {
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/// gives a quantity in base units.
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pub fn to_base_factor(&self) -> Quantity {
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let q = unit_db!(self.whole, unpack_base_factor);
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let q = self.whole.base_factor();
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let mut q = q.unwrap_or(Quantity::new_rational_from_string("1").unwrap());
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let mut p = self.prefix.to_ratio();
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@ -126,7 +52,7 @@ impl FreeUnit {
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// Get this unit in terms of base units
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pub fn get_base(&self) -> Quantity {
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let q = unit_db!(self.whole, unpack_base_factor);
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let q = self.whole.base_factor();
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let mut q = q.unwrap_or(Quantity::new_rational_from_string("1").unwrap());
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// Don't divide by self
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@ -8,611 +8,7 @@ pub use prefix::Prefix;
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pub use unit::Unit;
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pub use freeunit::FreeUnit;
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use crate::quantity::Quantity;
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use crate::quantity::Scalar;
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#[derive(Hash)]
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#[derive(Debug)]
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#[derive(Copy, Clone)]
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#[derive(Eq, PartialEq)]
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pub enum WholeUnit {
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// Base Units
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Second,
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Meter,
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Gram, // Technically kilogram, but that messes with our prefix system.
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Ampere,
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Kelvin,
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Mole,
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Candela,
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// Length units
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Angstrom,
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Thou,
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Point, // pt, typesetting unit
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Inch,
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Foot,
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Yard,
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Furlong,
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Mile,
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AstronomicalUnit,
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Lightyear,
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Parsec,
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// Area
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Barn,
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Hectare,
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Acre,
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// Time units
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Minute,
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Hour,
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Day,
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Week,
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Month,
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Fortnight,
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GregorianYear,
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JulianYear,
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// Volume
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Liter,
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USGallon,
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Quart,
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ImperialGallon,
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Hogshead,
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Cup,
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Floz,
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Pint,
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Tablespoon,
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Teaspoon,
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// Pressure
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Pascal,
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Atmosphere,
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Bar,
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Barye,
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Psi,
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MillimeterMercury,
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Torr,
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MeterSeaWater,
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FootSeaWater
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}
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// SI prefix list:
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// ("Q","R","Y","Z","E","P","T","G","M","k","h","da","d","c","m","u","n","p","f","a","z","y","r","q")
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// X macro, used in Unit.from_string()
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//
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// Format is as follows:
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// (Unit, string from, (prefixes_to_generate))
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// Prefixes must be valid prefixes as defined in
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// Prefix::str_to_prefix.
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//
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// Prefix array can be ommited to prevent prefix generation.
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pub (self) use prefix::str_to_prefix;
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macro_rules! fromstring_db {
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($X:ident) => {
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$X!(
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// Base units
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(WholeUnit::Meter, "meter"),
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(WholeUnit::Meter, "meters"),
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(WholeUnit::Ampere, "ampere"),
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(WholeUnit::Ampere, "amperes"),
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(WholeUnit::Gram, "gram"),
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(WholeUnit::Gram, "grams"),
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(WholeUnit::Gram, "gramme"),
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(WholeUnit::Gram, "grammes"),
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(WholeUnit::Kelvin, "kelvin"),
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(WholeUnit::Mole, "mole"),
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(WholeUnit::Candela, "candela"),
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(WholeUnit::Meter, "m",
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("Q","R","Y","Z","E","P","T","G","M","k","h","da","d","c","m","u","n","p","f","a","z","y","r","q")
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),
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(WholeUnit::Second, "s",
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("Q","R","Y","Z","E","P","T","G","M","k","h","da","d","c","m","u","n","p","f","a","z","y","r","q")
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),
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(WholeUnit::Gram, "g",
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("Q","R","Y","Z","E","P","T","G","M","k","h","da","d","c","m","u","n","p","f","a","z","y","r","q")
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),
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(WholeUnit::Ampere, "A",
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("Q","R","Y","Z","E","P","T","G","M","k","h","da","d","c","m","u","n","p","f","a","z","y","r","q")
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),
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(WholeUnit::Kelvin, "K",
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("Q","R","Y","Z","E","P","T","G","M","k","h","da","d","c","m","u","n","p","f","a","z","y","r","q")
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),
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(WholeUnit::Mole, "mol",
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("Q","R","Y","Z","E","P","T","G","M","k","h","da","d","c","m","u","n","p","f","a","z","y","r","q")
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),
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(WholeUnit::Candela, "cd",
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("Q","R","Y","Z","E","P","T","G","M","k","h","da","d","c","m","u","n","p","f","a","z","y","r","q")
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),
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// Length
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(WholeUnit::Angstrom, "angstrom"),
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(WholeUnit::Angstrom, "Å"),
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(WholeUnit::Thou, "thou"),
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(WholeUnit::Point, "pt"),
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(WholeUnit::Point, "point"),
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(WholeUnit::Inch, "in"),
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(WholeUnit::Inch, "inch"),
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(WholeUnit::Foot, "ft"),
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(WholeUnit::Foot, "foot"),
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(WholeUnit::Foot, "feet"),
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(WholeUnit::Yard, "yard"),
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(WholeUnit::Yard, "yd"),
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(WholeUnit::Yard, "yards"),
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(WholeUnit::Mile, "mi"),
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(WholeUnit::Mile, "mile"),
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(WholeUnit::Mile, "miles"),
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(WholeUnit::AstronomicalUnit, "au"),
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(WholeUnit::AstronomicalUnit, "AU"),
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(WholeUnit::AstronomicalUnit, "astronomicalUnit"),
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(WholeUnit::AstronomicalUnit, "astronomicalUnits"),
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(WholeUnit::Lightyear, "ly"),
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(WholeUnit::Lightyear, "lightyear"),
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(WholeUnit::Lightyear, "lightyears"),
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(WholeUnit::Parsec, "pc"),
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(WholeUnit::Parsec, "parsec"),
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(WholeUnit::Parsec, "parsecs"),
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// Time
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(WholeUnit::Second, "sec"),
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(WholeUnit::Second, "second"),
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(WholeUnit::Second, "seconds"),
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(WholeUnit::Minute, "min"),
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(WholeUnit::Minute, "minute"),
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(WholeUnit::Minute, "minutes"),
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(WholeUnit::Hour, "h"),
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(WholeUnit::Hour, "hour"),
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(WholeUnit::Hour, "hours"),
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(WholeUnit::Day, "d"),
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(WholeUnit::Day, "day"),
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(WholeUnit::Day, "days"),
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(WholeUnit::Week, "w"),
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(WholeUnit::Week, "week"),
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(WholeUnit::Week, "weeks"),
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(WholeUnit::Month, "month"),
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(WholeUnit::Month, "months"),
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(WholeUnit::Fortnight, "fortnight"),
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(WholeUnit::Fortnight, "fortnights"),
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(WholeUnit::GregorianYear, "year"),
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(WholeUnit::GregorianYear, "years"),
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(WholeUnit::JulianYear, "julianYear"),
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(WholeUnit::JulianYear, "julianYears"),
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// Misc
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(WholeUnit::Barn, "b"),
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(WholeUnit::Barn, "barn"),
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(WholeUnit::Hectare, "ha"),
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(WholeUnit::Hectare, "hectare"),
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(WholeUnit::Hectare, "hectares"),
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(WholeUnit::Acre, "acre"),
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(WholeUnit::Acre, "acres"),
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// Volume
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(WholeUnit::Liter, "liter"),
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(WholeUnit::Liter, "liters"),
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(WholeUnit::Liter, "litre"),
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(WholeUnit::Liter, "litres"),
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(WholeUnit::USGallon, "usgal"),
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(WholeUnit::USGallon, "gal"),
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(WholeUnit::USGallon, "gallon"),
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(WholeUnit::USGallon, "gallons"),
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(WholeUnit::Quart, "quart"),
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(WholeUnit::Quart, "quarts"),
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(WholeUnit::Quart, "qt"),
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(WholeUnit::ImperialGallon, "impgal"),
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(WholeUnit::ImperialGallon, "imperialGallon"),
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(WholeUnit::ImperialGallon, "imperialGallons"),
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(WholeUnit::Cup, "cup"),
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(WholeUnit::Floz, "floz"),
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(WholeUnit::Pint, "pint"),
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(WholeUnit::Pint, "pints"),
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(WholeUnit::Tablespoon, "tablespoon"),
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(WholeUnit::Tablespoon, "tablespoons"),
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(WholeUnit::Tablespoon, "tbsp"),
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(WholeUnit::Tablespoon, "Tbsp"),
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(WholeUnit::Teaspoon, "teaspoon"),
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(WholeUnit::Teaspoon, "teaspoons"),
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(WholeUnit::Teaspoon, "tsp"),
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(WholeUnit::Teaspoon, "Tsp"),
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(WholeUnit::Hogshead, "hogshead"),
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(WholeUnit::Hogshead, "hogsheads"),
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(WholeUnit::Liter, "l",
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("Q","R","Y","Z","E","P","T","G","M","k","h","da","d","c","m","u","n","p","f","a","z","y","r","q")
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),
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(WholeUnit::Liter, "L",
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("Q","R","Y","Z","E","P","T","G","M","k","h","da","d","c","m","u","n","p","f","a","z","y","r","q")
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),
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// Pressure
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(WholeUnit::Atmosphere, "atm"),
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(WholeUnit::Atmosphere, "atmosphere"),
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(WholeUnit::Atmosphere, "atmospheres"),
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(WholeUnit::Pascal, "pascal"),
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(WholeUnit::Barye, "Ba"),
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(WholeUnit::Psi, "psi"),
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(WholeUnit::MillimeterMercury, "mmhg"),
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(WholeUnit::MillimeterMercury, "mmHg"),
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(WholeUnit::Torr, "torr"),
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(WholeUnit::Torr, "Torr"),
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(WholeUnit::MeterSeaWater, "msw"),
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(WholeUnit::FootSeaWater, "fsw"),
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(WholeUnit::MeterSeaWater, "MSW"),
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(WholeUnit::FootSeaWater, "FSW"),
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(WholeUnit::Pascal, "Pa",
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("Q","R","Y","Z","E","P","T","G","M","k","h","da","d","c","m","u","n","p","f","a","z","y","r","q")
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),
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(WholeUnit::Bar, "bar",
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("Q","R","Y","Z","E","P","T","G","M","k","h","da","d","c","m","u","n","p","f","a","z","y","r","q")
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)
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)
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}
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}
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pub (self) use fromstring_db;
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// X macro, used in the following functions:
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// - FreeUnit.to_base_factor()
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// - FreeUnit.to_string()
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//
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// Read below comments for explanation.
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macro_rules! unit_db {
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($a:expr, $X:ident) => {
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match $a {
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// Base
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WholeUnit::Second => $X!(
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WholeUnit::Second, // Repeat the name of this base unit
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"s", // String to display for this unit
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// "base", "float", or "rational."
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// if base, this is a base unit and has no conversion factor.
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// if float or rational, this is not a base unit. See below.
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base
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),
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WholeUnit::Meter => $X!(
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WholeUnit::Meter, "m",
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base
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),
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WholeUnit::Gram => $X!(
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WholeUnit::Gram, "g",
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base
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),
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WholeUnit::Ampere => $X!(
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WholeUnit::Ampere, "A",
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base
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),
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WholeUnit::Kelvin => $X!(
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WholeUnit::Kelvin, "K",
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base
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),
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WholeUnit::Mole => $X!(
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WholeUnit::Mole, "mol",
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base
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),
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WholeUnit::Candela => $X!(
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WholeUnit::Candela, "cd",
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base
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),
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||||
|
||||
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// Time
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WholeUnit::Minute => $X!(
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WholeUnit::Minute, "min",
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// "rational" and "float" determine what kind of Quantity
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// this unit's conversion factor will be. Use "rational"
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// if it is exact, and "float" if it is an approximation.
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rational,
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// The next two lines are interpreted as follows:
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// One Minute = 60 Seconds.
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// The value
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"60",
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// The unit. Can be repeated for compound units.
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// MUST BE BASE UNITS.
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(WholeUnit::Second, 1f64)
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),
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WholeUnit::Hour => $X!(
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WholeUnit::Hour, "h",
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rational, "3600",
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(WholeUnit::Second, 1f64)
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),
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||||
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WholeUnit::Day => $X!(
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WholeUnit::Day, "day",
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rational, "86400",
|
||||
(WholeUnit::Second, 1f64)
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),
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||||
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WholeUnit::Week => $X!(
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WholeUnit::Week, "week",
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rational, "604800",
|
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(WholeUnit::Second, 1f64)
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),
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||||
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WholeUnit::Month => $X!(
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WholeUnit::Month, "month",
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||||
rational, "2629746",
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(WholeUnit::Second, 1f64)
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),
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WholeUnit::Fortnight => $X!(
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WholeUnit::Fortnight, "fortnight",
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rational, "1209600",
|
||||
(WholeUnit::Second, 1f64)
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),
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WholeUnit::GregorianYear => $X!(
|
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WholeUnit::GregorianYear, "year",
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rational, "31557000",
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(WholeUnit::Second, 1f64)
|
||||
),
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|
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WholeUnit::JulianYear => $X!(
|
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WholeUnit::JulianYear, "julianYear",
|
||||
rational, "31557600",
|
||||
(WholeUnit::Second, 1f64)
|
||||
),
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|
||||
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||||
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// Length
|
||||
|
||||
WholeUnit::Angstrom => $X!(
|
||||
WholeUnit::Angstrom, "Å",
|
||||
rational, "1e-10",
|
||||
(WholeUnit::Meter, 1f64)
|
||||
),
|
||||
|
||||
WholeUnit::Thou => $X!(
|
||||
WholeUnit::Thou, "thou",
|
||||
rational, "0.0000254",
|
||||
(WholeUnit::Meter, 1f64)
|
||||
),
|
||||
|
||||
WholeUnit::Point => $X!(
|
||||
WholeUnit::Point, "pt",
|
||||
rational, "0.0003514598",
|
||||
(WholeUnit::Meter, 1f64)
|
||||
),
|
||||
|
||||
WholeUnit::Inch => $X!(
|
||||
WholeUnit::Inch, "in",
|
||||
rational, "0.0254",
|
||||
(WholeUnit::Meter, 1f64)
|
||||
),
|
||||
|
||||
WholeUnit::Foot => $X!(
|
||||
WholeUnit::Foot, "ft",
|
||||
rational, "0.3048",
|
||||
(WholeUnit::Meter, 1f64)
|
||||
),
|
||||
|
||||
WholeUnit::Yard => $X!(
|
||||
WholeUnit::Yard, "yd",
|
||||
rational, "0.9144",
|
||||
(WholeUnit::Meter, 1f64)
|
||||
),
|
||||
|
||||
WholeUnit::Furlong => $X!(
|
||||
WholeUnit::Furlong, "furlong",
|
||||
rational, "201.17",
|
||||
(WholeUnit::Meter, 1f64)
|
||||
),
|
||||
|
||||
WholeUnit::Mile => $X!(
|
||||
WholeUnit::Mile, "mi",
|
||||
rational, "1609.344",
|
||||
(WholeUnit::Meter, 1f64)
|
||||
),
|
||||
|
||||
WholeUnit::AstronomicalUnit => $X!(
|
||||
WholeUnit::AstronomicalUnit, "AU",
|
||||
rational, "149597870700",
|
||||
(WholeUnit::Meter, 1f64)
|
||||
),
|
||||
|
||||
WholeUnit::Lightyear => $X!(
|
||||
WholeUnit::Lightyear, "ly",
|
||||
rational, "9460730472580800",
|
||||
(WholeUnit::Meter, 1f64)
|
||||
),
|
||||
|
||||
WholeUnit::Parsec => $X!(
|
||||
WholeUnit::Parsec, "pc",
|
||||
float, "3.085677581e16",
|
||||
(WholeUnit::Meter, 1f64)
|
||||
),
|
||||
|
||||
WholeUnit::Barn => $X!(
|
||||
WholeUnit::Barn, "b",
|
||||
rational, "1e-28",
|
||||
(WholeUnit::Meter, 2f64)
|
||||
),
|
||||
|
||||
WholeUnit::Hectare => $X!(
|
||||
WholeUnit::Hectare, "ha",
|
||||
rational, "10000",
|
||||
(WholeUnit::Meter, 2f64)
|
||||
),
|
||||
|
||||
WholeUnit::Acre => $X!( // 66 x 660 feet
|
||||
WholeUnit::Acre, "acre",
|
||||
rational, "4046.8564224",
|
||||
(WholeUnit::Meter, 2f64)
|
||||
),
|
||||
|
||||
|
||||
|
||||
// Volume
|
||||
WholeUnit::Liter => $X!(
|
||||
WholeUnit::Liter, "l",
|
||||
rational, "0.001",
|
||||
(WholeUnit::Meter, 3f64)
|
||||
),
|
||||
|
||||
WholeUnit::Hogshead => $X!(
|
||||
WholeUnit::Hogshead, "hogshead",
|
||||
rational, "0.2385", // 63 gallons
|
||||
(WholeUnit::Meter, 3f64)
|
||||
),
|
||||
|
||||
WholeUnit::USGallon => $X!(
|
||||
WholeUnit::USGallon, "gal",
|
||||
rational, "0.003785411784",
|
||||
(WholeUnit::Meter, 3f64)
|
||||
),
|
||||
|
||||
WholeUnit::Quart => $X!(
|
||||
WholeUnit::Quart, "qt",
|
||||
rational, "0.000946352946",
|
||||
(WholeUnit::Meter, 3f64)
|
||||
),
|
||||
|
||||
WholeUnit::ImperialGallon => $X!(
|
||||
WholeUnit::ImperialGallon, "impgal",
|
||||
rational, "0.00454609",
|
||||
(WholeUnit::Meter, 3f64)
|
||||
),
|
||||
|
||||
WholeUnit::Cup => $X!(
|
||||
WholeUnit::Cup, "cup",
|
||||
rational, "0.0002365882365",
|
||||
(WholeUnit::Meter, 3f64)
|
||||
),
|
||||
|
||||
WholeUnit::Floz => $X!(
|
||||
WholeUnit::Floz, "floz",
|
||||
rational, "0.0000295735295625",
|
||||
(WholeUnit::Meter, 3f64)
|
||||
),
|
||||
|
||||
WholeUnit::Pint => $X!(
|
||||
WholeUnit::Pint, "pint",
|
||||
rational, "0.00056826125",
|
||||
(WholeUnit::Meter, 3f64)
|
||||
),
|
||||
|
||||
WholeUnit::Tablespoon => $X!(
|
||||
WholeUnit::Tablespoon, "tbsp",
|
||||
rational, "0.00001478676478125",
|
||||
(WholeUnit::Meter, 3f64)
|
||||
),
|
||||
|
||||
WholeUnit::Teaspoon => $X!(
|
||||
WholeUnit::Teaspoon, "tsp",
|
||||
rational, "0.000005",
|
||||
(WholeUnit::Meter, 3f64)
|
||||
),
|
||||
|
||||
|
||||
|
||||
// Pressure
|
||||
|
||||
WholeUnit::Pascal => $X!(
|
||||
WholeUnit::Pascal, "Pa",
|
||||
rational, "1000",
|
||||
(WholeUnit::Gram, 1f64),
|
||||
(WholeUnit::Meter, -1f64),
|
||||
(WholeUnit::Second, -2f64)
|
||||
),
|
||||
|
||||
WholeUnit::Bar => $X!(
|
||||
WholeUnit::Bar, "bar",
|
||||
rational, "100000000",
|
||||
(WholeUnit::Gram, 1f64),
|
||||
(WholeUnit::Meter, -1f64),
|
||||
(WholeUnit::Second, -2f64)
|
||||
),
|
||||
|
||||
WholeUnit::Barye => $X!(
|
||||
WholeUnit::Barye, "Ba",
|
||||
rational, "100",
|
||||
(WholeUnit::Gram, 1f64),
|
||||
(WholeUnit::Meter, -1f64),
|
||||
(WholeUnit::Second, -2f64)
|
||||
),
|
||||
|
||||
WholeUnit::Atmosphere => $X!(
|
||||
WholeUnit::Atmosphere, "atm",
|
||||
rational, "101325000",
|
||||
(WholeUnit::Gram, 1f64),
|
||||
(WholeUnit::Meter, -1f64),
|
||||
(WholeUnit::Second, -2f64)
|
||||
),
|
||||
|
||||
WholeUnit::Psi => $X!(
|
||||
WholeUnit::Psi, "psi",
|
||||
rational, "6894757.2931783",
|
||||
(WholeUnit::Gram, 1f64),
|
||||
(WholeUnit::Meter, -1f64),
|
||||
(WholeUnit::Second, -2f64)
|
||||
),
|
||||
|
||||
WholeUnit::MillimeterMercury => $X!(
|
||||
WholeUnit::MillimeterMercury, "mmHg",
|
||||
rational, "133322.387415",
|
||||
(WholeUnit::Gram, 1f64),
|
||||
(WholeUnit::Meter, -1f64),
|
||||
(WholeUnit::Second, -2f64)
|
||||
),
|
||||
|
||||
WholeUnit::Torr => $X!(
|
||||
WholeUnit::Torr, "torr",
|
||||
rational_frac, (101325000, 760),
|
||||
(WholeUnit::Gram, 1f64),
|
||||
(WholeUnit::Meter, -1f64),
|
||||
(WholeUnit::Second, -2f64)
|
||||
),
|
||||
|
||||
WholeUnit::MeterSeaWater => $X!(
|
||||
WholeUnit::MeterSeaWater, "MSW",
|
||||
rational, "10000000",
|
||||
(WholeUnit::Gram, 1f64),
|
||||
(WholeUnit::Meter, -1f64),
|
||||
(WholeUnit::Second, -2f64)
|
||||
),
|
||||
|
||||
WholeUnit::FootSeaWater => $X!(
|
||||
WholeUnit::FootSeaWater, "FSW",
|
||||
rational, "3064330",
|
||||
(WholeUnit::Gram, 1f64),
|
||||
(WholeUnit::Meter, -1f64),
|
||||
(WholeUnit::Second, -2f64)
|
||||
),
|
||||
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
}
|
||||
pub (self) use unit_db;
|
||||
include!(concat!(env!("OUT_DIR"), "/units.rs"));
|
||||
@ -1,7 +1,6 @@
|
||||
use crate::quantity::Quantity;
|
||||
|
||||
|
||||
|
||||
#[derive(Hash)]
|
||||
#[derive(Debug)]
|
||||
#[derive(Copy, Clone)]
|
||||
@ -75,37 +74,6 @@ impl Prefix {
|
||||
}
|
||||
|
||||
|
||||
|
||||
macro_rules! str_to_prefix {
|
||||
("") => {Prefix::None};
|
||||
("Q") => {Prefix::Quetta};
|
||||
("R") => {Prefix::Ronna};
|
||||
("Y") => {Prefix::Yotta};
|
||||
("Z") => {Prefix::Zetta};
|
||||
("E") => {Prefix::Exa};
|
||||
("P") => {Prefix::Peta};
|
||||
("T") => {Prefix::Tera};
|
||||
("G") => {Prefix::Giga};
|
||||
("M") => {Prefix::Mega};
|
||||
("k") => {Prefix::Kilo};
|
||||
("h") => {Prefix::Hecto};
|
||||
("da") => {Prefix::Deka};
|
||||
("d") => {Prefix::Deci};
|
||||
("c") => {Prefix::Centi};
|
||||
("m") => {Prefix::Milli};
|
||||
("u") => {Prefix::Micro};
|
||||
("n") => {Prefix::Nano};
|
||||
("p") => {Prefix::Pico};
|
||||
("f") => {Prefix::Femto};
|
||||
("a") => {Prefix::Atto};
|
||||
("z") => {Prefix::Zepto};
|
||||
("y") => {Prefix::Yocto};
|
||||
("r") => {Prefix::Ronto};
|
||||
("q") => {Prefix::Quecto};
|
||||
}
|
||||
pub (super) use str_to_prefix;
|
||||
|
||||
|
||||
impl ToString for Prefix {
|
||||
fn to_string(&self) -> String {
|
||||
String::from(match self {
|
||||
|
||||
@ -7,10 +7,7 @@ use std::ops::{
|
||||
use crate::quantity::Scalar;
|
||||
use crate::quantity::Quantity;
|
||||
use super::FreeUnit;
|
||||
use super::WholeUnit;
|
||||
use super::Prefix;
|
||||
use super::fromstring_db;
|
||||
use super::str_to_prefix;
|
||||
use super::freeunit_from_string;
|
||||
|
||||
#[derive(Debug)]
|
||||
#[derive(Clone)]
|
||||
@ -187,40 +184,8 @@ impl Unit {
|
||||
|
||||
impl Unit {
|
||||
pub fn from_string(s: &str) -> Option<Quantity> {
|
||||
macro_rules! unpack_fromstring {
|
||||
(
|
||||
$(
|
||||
(
|
||||
$unit:expr,
|
||||
$string:literal
|
||||
$(, (
|
||||
$( $prefix:tt ),*
|
||||
))?
|
||||
)
|
||||
),*
|
||||
) => {
|
||||
// Build match statement for each unit and prefix
|
||||
match s {
|
||||
$(
|
||||
// No prefix--every unit has this
|
||||
$string => Some(FreeUnit::from_whole($unit)),
|
||||
|
||||
// Arms for prefixes
|
||||
$($(
|
||||
concat!(
|
||||
$prefix,
|
||||
$string
|
||||
) => Some(FreeUnit::from_whole_prefix($unit, str_to_prefix!($prefix))),
|
||||
)*)*
|
||||
)*
|
||||
_ => None
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
// Big match statement
|
||||
let b = fromstring_db!(unpack_fromstring);
|
||||
|
||||
let b = freeunit_from_string(s);
|
||||
if b.is_none() { return None; }
|
||||
let b = Unit::from_free(b.unwrap());
|
||||
let mut q = Quantity::new_rational(1f64).unwrap();
|
||||
|
||||
Reference in New Issue
Block a user