Struct Registry

pub struct Registry {

    pub base_units: BTreeSet<BaseUnit>,
    pub base_unit_long_names: BTreeMap<String, String>,
    pub units: BTreeMap<String, Number>,
    pub quantities: BTreeMap<Dimensionality, String>,
    pub decomposition_units: BTreeMap<Dimensionality, String>,
    pub prefixes: Vec<(String, Numeric)>,
    pub definitions: BTreeMap<String, Expr>,
    pub docs: BTreeMap<String, String>,
    pub categories: BTreeMap<String, String>,
    pub category_names: BTreeMap<String, String>,
    pub datepatterns: Vec<Vec<DatePattern>>,
    pub substances: BTreeMap<String, Substance>,
    pub substance_symbols: BTreeMap<String, String>,
}

Fields

base_units: BTreeSet<BaseUnit>

Contains the base units, e.g. kg, bit.

base_unit_long_names: BTreeMap<String, String>

Mappings from short forms of base units to long forms, e.g. kg → kilogram.

units: BTreeMap<String, Number>

Contains numerical values of units.

quantities: BTreeMap<Dimensionality, String>

Maps dimensionality to named physical quantities like energy.

decomposition_units: BTreeMap<Dimensionality, String>

Maps dimensionality to names of SI derived units (newton, pascal, etc.) for showing simplified forms of units.

prefixes: Vec<(String, Numeric)>

A list of prefixes that can be applied to units, like kilo.

definitions: BTreeMap<String, Expr>

Contains the original expressions defining a unit.

docs: BTreeMap<String, String>

Contains documentation strings.

categories: BTreeMap<String, String>

Maps unit names to category IDs.

category_names: BTreeMap<String, String>

Maps category IDs to display names.

datepatterns: Vec<Vec<DatePattern>>

Used for matching date formats.

substances: BTreeMap<String, Substance>

Objects or materials that have certain properties.

substance_symbols: BTreeMap<String, String>

Maps elemental names (like He) to substance names (helium), used for parsing molecular formulas, e.g. H2O.

Implementations

impl Registry

pub fn canonicalize(&self, name: &str) -> Option<String>

Given a unit name, tries to find a canonical name for it.

Examples

• kg -> kilogram (base units are converted to long name)
• mm -> millimeter (prefixes are converted to long form)
• micron -> micrometer (aliases are expanded)

Trait Implementations

impl Debug for Registry

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Registry

fn default() -> Registry

Returns the “default value” for a type.