What do you think about Michal's decompile package:
https://github.com/michalmuskala/decompile
You can install as an archive and use it any project from the command line
and it supports multiple formats.
*José Valim*
www.plataformatec.com.br
Skype: jv.ptec
Founder and Director of R
On Mon, Aug 6, 2018 at 9:48 AM, Devon Estes wrote:
> As part of debugging an issue in Benchee recently, we needed to look at
> BEAM instructions for some code to see what exactly was being generated on
> OTP 20 and OTP 21. I also know of several other people in the community
> that need to look at the BEAM instructions from time to time, either for
> debugging purposes or for performance analysis purposes. Each of these
> people have their own little script or function stored somewhere that
> generates this code for them. I think, in the spirit of adding things to
> Elixir Core that help in the development of the language itself, it would
> be nice to have a function to take care of generating BEAM instructions in
> Elixir Core.
>
> That's why I am proposing a new function called
> `Code.beam_instructions/1`. It would accept a string of Elixir code and
> would return a human readable binary representation of the BEAM
> instructions for the given code.
>
> For reference, here's the implementation that I'm currently using to
> inspect BEAM instructions (which I got from Tobias Peiffer):
>
> ```
> defmodule ASM do
> def for(code) do
> code = """
> defmodule Test do
> def test do
> #{code}
> end
> end
> """
>
> [{_, beam}] = Code.compile_string(code)
> {:ok,{_,[{:abstract_code,{_,abstract_code}}]}} =
> :beam_lib.chunks(beam,[:abstract_code])
> {:ok, _module, asm} = :compile.forms(abstract_code, [:to_asm])
> asm
> end
> end
> ```
>
> and here's a link to Saša Jurić's gist on which that's based:
> https://gist.github.com/sasa1977/73274c2be733b5321ace
>
> The reason it's helpful to have in Elixir core instead of in a separate
> file somewhere is that you can drop this function in as a debugging
> statement in the code you're working on instead of having to pull out the
> code you're working on and paste it into an IEX session somewhere else.
> It's a convenience for sure, but it would help make the development
> experience nicer.
>
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