Crash when styling module with dynamically generated functions

[michallepicki]

Elixir / OTP Version

$ elixir --version
Erlang/OTP 25 [erts-13.1.1] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [jit]

Elixir 1.14.1 (compiled with Erlang/OTP 25)

Example Input

defmodule Example do
  ~w(hello hi)a
  |> Enum.map(fn key ->
    def unquote(key)() do
      :world
    end
  end)
end

Current behaviour / Stacktrace

$ mix style
mix style failed for file: lib/example.ex
** (Styler.StyleError) Error running style Defs on
   Please consider opening an issue at: https://github.com/adobe/elixir-styler/issues/new
** (ArithmeticError) bad argument in arithmetic expression

    :erlang.-(nil, 4)
    lib/style/defs.ex:86: Styler.Style.Defs.run/2
    lib/zipper.ex:345: Styler.Zipper.do_traverse_while/3
    lib/styler.ex:36: anonymous fn/4 in Styler.style/3
    (elixir 1.14.1) lib/enum.ex:2468: Enum."-reduce/3-lists^foldl/2-0-"/3
    lib/styler.ex:34: Styler.style/3
    lib/styler.ex:64: Styler.format/3
    lib/mix/tasks/style.ex:99: Mix.Tasks.Style.style_file/3

Expected Output

no crash

[novaugust]

Thanks for the issue! This is actually the result of an interplay between the pipes style rewriting the single pipe but getting overeager and destroying some metadata needed by the defs-onelining style. Will have a fix out shortly =)

[novaugust]

v0.7.6 released with a fix. thanks again =)