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Localization (parsing, formatting) of numbers, dates/time/calendar, units of measure, messages and lists. Includes localized collation.
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lib/localize/unit/data/overlay.ex
defmodule Localize.Unit.Data.Overlay do
@moduledoc false
# Runtime overlay over `Localize.Unit.Data`: checks the custom unit
# registry first, then falls back to the compile-time CLDR data.
#
# Lives in its own module so that `Localize.Unit.Data` can stay a
# leaf (no runtime back-edges into `Localize.Unit.CustomRegistry`),
# which keeps the `combinators.ex (compile→) data.ex` edge out of
# any compile-connected cycle.
alias Localize.Unit.{CustomRegistry, Data}
@doc """
Returns the conversion factor for a unit, checking the custom
registry first and falling back to the compile-time data.
"""
@spec conversion_factor(String.t()) :: %{factor: number() | :special, offset: number()} | nil
def conversion_factor(unit_name) do
case CustomRegistry.get(unit_name) do
nil ->
Data.conversion_factor_raw(unit_name)
definition ->
%{factor: definition.factor, offset: Map.get(definition, :offset, 0.0)}
end
end
@doc """
Returns the base unit for a unit, checking the custom registry
first and falling back to the compile-time data.
"""
@spec conversion(String.t()) :: String.t() | nil
def conversion(unit_name) do
case CustomRegistry.get(unit_name) do
nil ->
Data.conversion_raw(unit_name)
definition ->
definition.base_unit
end
end
end