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isn
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Use __CALLER__ to determine isn datatype 

`__CALLER__.module` contains enough information to determine what datatype to
use, so the usage of `Isn.Base` can be simplified to the following

```elixir
defmodule Isn.ISBN13 do
  use Isn.Base
end
```

instead of

```elixir
defmodule Isn.ISBN13 do
  use Isn.Base, :isbn13
end
```
This commit is contained in:
Martin Frost 2015-06-02 08:03:17 +02:00
parent f3514497fd
commit 15385bfc6b
1 changed files with 16 additions and 11 deletions
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27
lib/isn.ex
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@ -43,7 +43,7 @@ defmodule Isn do
do: parameters
def matching(_library),
do: Enum.reduce(@isn, [], fn(t, ack) -> ack ++ [type: t] end)
do: Enum.zip(Stream.cycle([:type]), @isn)
def format(_),
do: :text
@ -71,8 +71,13 @@ defmodule Isn.Base do
* load/1
* dump/1
"""
defmacro __using__(isn_type) do
ecto_type = isn_type |> Atom.to_string |> String.upcase
defmacro __using__(_opts) do
ecto_type = __CALLER__.module
|> Atom.to_string
|> String.replace(~r(.+\.), "")
isn_type = ecto_type
|> String.downcase
quote bind_quoted: [isn_type: isn_type, ecto_type: ecto_type] do
@behaviour Ecto.Type
@isn_type isn_type
@ -107,11 +112,11 @@ defmodule Isn.Base do
end
end
defmodule Isn.ISBN, do: use(Isn.Base, :isbn)
defmodule Isn.ISMN, do: use(Isn.Base, :ismn)
defmodule Isn.ISSN, do: use(Isn.Base, :issn)
defmodule Isn.ISBN13, do: use(Isn.Base, :isbn13)
defmodule Isn.ISMN13, do: use(Isn.Base, :ismn13)
defmodule Isn.ISSN13, do: use(Isn.Base, :issn13)
defmodule Isn.UPC, do: use(Isn.Base, :upc)
defmodule Isn.EAN13, do: use(Isn.Base, :ean13)
defmodule Isn.ISBN, do: use(Isn.Base)
defmodule Isn.ISMN, do: use(Isn.Base)
defmodule Isn.ISSN, do: use(Isn.Base)
defmodule Isn.ISBN13, do: use(Isn.Base)
defmodule Isn.ISMN13, do: use(Isn.Base)
defmodule Isn.ISSN13, do: use(Isn.Base)
defmodule Isn.UPC, do: use(Isn.Base)
defmodule Isn.EAN13, do: use(Isn.Base)