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tzdata
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Tzdata is a parser and library for the tz database.
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lib/tzdata/periods.ex
defmodule Tzdata.Periods do
@moduledoc false
alias Tzdata.BasicData, as: TzData
alias Tzdata.PeriodBuilder
# For each canonical zone, calculate periods
Enum.each TzData.zone_list, fn (zone_name) ->
def periods(unquote(zone_name)) do
{:ok, unquote(Macro.escape(PeriodBuilder.calc_periods(zone_name)))}
end
end
# For each linked zone, call canonical zone
Enum.each TzData.links, fn {alias_name, canonical_name} ->
def periods(unquote(alias_name)) do
periods(unquote(canonical_name))
end
end
# if a periods for a zone has not been defined at this point,
# the zone name does not exist
@doc """
A list of pre-compiled periods for a given zone name. This function is
used by the TimeZonePeriods module.
"""
def periods(_zone_name), do: {:error, :not_found}
end