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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/parser/helpers.ex
defmodule Localize.Unit.Parser.Helpers do
@moduledoc false
# Runtime helper functions called by the pre-compiled parser.
# These are extracted from the combinator module so the
# NimbleParsec dependency is not needed at runtime.
@doc false
def wrap_pow([_pow_string, digits]) do
{:power, {:pow, String.to_integer(digits)}}
end
@doc false
def wrap_constant(parts) do
{:constant, Enum.join(parts)}
end
@doc false
def wrap_currency_unit([code]) do
{:single_unit, prefix: nil, power: nil, base: "curr-" <> String.upcase(code)}
end
@doc false
def wrap_single_unit(parts) do
power =
case Enum.find(parts, fn
{:power, _} -> true
_ -> false
end) do
{:power, value} -> value
nil -> nil
end
si_prefix =
case Enum.find(parts, &match?({:si_prefix, _}, &1)) do
{:si_prefix, value} -> String.to_atom(value)
nil -> nil
end
base =
case Enum.find(parts, &match?({:base, _}, &1)) do
{:base, value} -> value
nil -> nil
end
{:single_unit, prefix: si_prefix, power: power, base: base}
end
@doc false
def wrap_per_leading(products) do
denominator = Enum.flat_map(products, fn {:product, units} -> units end)
{:unit, type: nil, numerator: [], denominator: denominator}
end
@doc false
def wrap_core_unit([{:product, numerator}]) do
{:unit, type: nil, numerator: numerator, denominator: []}
end
def wrap_core_unit([{:product, numerator} | denominator_products]) do
denominator = Enum.flat_map(denominator_products, fn {:product, units} -> units end)
{:unit, type: nil, numerator: numerator, denominator: denominator}
end
@doc false
def wrap_long_unit([category_name, {:unit, keyword}]) do
{:unit, Keyword.put(keyword, :type, category_name)}
end
@doc false
def wrap_mixed_unit(units) do
{:mixed_unit, units}
end
end