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lib/exceptional/pipe.ex
defmodule Exceptional.Pipe do
@moduledoc ~S"""
This module overloads the basic `|>` operator, and as such should be used
with _extreme caution_ (if ever).
"""
defmacro __using__(_) do
quote do
import Kernel, except: [|>: 2]
require unquote(__MODULE__)
import unquote(__MODULE__)
end
end
import Kernel, except: [|>: 2]
@doc ~S"""
## Examples
iex> use Exceptional.Pipe
...> 1 |> fn x -> x * 100 end.()
100
iex> use Exceptional.Pipe
...> ArgumentError.exception("plain error")
...> |> fn x -> x * 100 end.()
%ArgumentError{message: "plain error"}
"""
defmacro maybe_exception |> continue do
quote do
use Exceptional.Value
unquote(maybe_exception) ~> unquote(continue)
end
end
end