Erlex

[!IMPORTANT]
This fork of erlex is the official version currently being released on hex.pm.
Please direct issues and pull requests to it, rather than the original repository.

Convert Erlang style structs and error messages to equivalent Elixir.

Useful for pretty printing things like Dialyzer errors and Observer state. NOTE: Because this code calls the Elixir formatter, it requires Elixir 1.6+.

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Release
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Changelog

Check out the Changelog.

Installation

The package can be installed from Hex by adding erlex to your list of dependencies in mix.exs:

def deps do
  [
    {:erlex, "~> 0.2"},
  ]
end

Usage

Invoke Erlex.pretty_print/1 with the input string.

iex> str = ~S"('Elixir.Plug.Conn':t(),binary() | atom(),'Elixir.Keyword':t() | map()) -> 'Elixir.Plug.Conn':t()"
iex> Erlex.pretty_print(str)
(Plug.Conn.t(), binary() | atom(), Keyword.t() | map()) :: Plug.Conn.t()

While the lion's share of the work is done via invoking Erlex.pretty_print/1, other higher order functions exist for further formatting certain messages by running through the Elixir formatter. Because we know the previous example is a type, we can invoke the Erlex.pretty_print_contract/1 function, which would format that appropriately for very long lines.

iex> str = ~S"('Elixir.Plug.Conn':t(),binary() | atom(),'Elixir.Keyword':t() | map(), map() | atom(), non_neg_integer(), binary(), binary(), binary(), binary(), binary()) -> 'Elixir.Plug.Conn':t()"
iex> Erlex.pretty_print_contract(str)
(
  Plug.Conn.t(),
  binary() | atom(),
  Keyword.t() | map(),
  map() | atom(),
  non_neg_integer(),
  binary(),
  binary(),
  binary(),
  binary(),
  binary()
) :: Plug.Conn.t()

Contributing

We welcome contributions of all kinds! To get started, click here.

Code of Conduct

Be sure to read and follow the code of conduct.

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