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dialyxir

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Mix tasks to simplify use of Dialyzer in Elixir projects.

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dialyxir lib dialyxir warnings function_application_no_function.ex
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lib/dialyxir/warnings/function_application_no_function.ex 

defmodule Dialyxir.Warnings.FunctionApplicationNoFunction do

  @moduledoc """

  The function being invoked exists, but has an arity mismatch.



  ## Example



      defmodule Example do

        def ok() do

          fun = fn _ -> :ok end

          fun.()

        end

      end

  """



  @behaviour Dialyxir.Warning



  @impl Dialyxir.Warning

  @spec warning() :: :fun_app_no_fun

  def warning(), do: :fun_app_no_fun



  @impl Dialyxir.Warning

  @spec format_short([String.t()]) :: String.t()

  def format_short([_, _, arity]) do

    "Function application will fail, because anonymous function has arity of #{arity}."

  end



  @impl Dialyxir.Warning

  @spec format_long([String.t()]) :: String.t()

  def format_long([op, type, arity]) do

    pretty_op = Erlex.pretty_print(op)

    pretty_type = Erlex.pretty_print_type(type)



    "Function application will fail, because #{pretty_op} :: #{pretty_type} is not a function of arity #{

      arity

    }."

  end



  @impl Dialyxir.Warning

  @spec explain() :: String.t()

  def explain() do

    @moduledoc

  end

end