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localize
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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/macros.ex
defmodule Localize.Macros do
@moduledoc false
@doc """
Guard macro that checks if a value is `nil` or `false`.
"""
defmacro is_false(value) do
quote do
is_nil(unquote(value)) or unquote(value) == false
end
end
@doc """
Sets `@impl true` for a callback implementation.
"""
defmacro calendar_impl do
quote do
@impl true
end
end
@doc """
Logs a warning message only once per key per module.
Uses `:persistent_term` to track whether the message
has already been logged. Subsequent calls with the same
key from the same module are silently ignored.
"""
defmacro warn_once(key, message, level \\ :warning) do
caller = __CALLER__.module
quote do
require Logger
if Localize.Utils.Helpers.get_term({unquote(caller), unquote(key)}, true) do
Logger.unquote(level)(unquote(message))
Localize.Utils.Helpers.put_term({unquote(caller), unquote(key)}, nil)
end
end
end
end