Gemspec Marshal dump for quick index generation

[ep4sh]

Dear community,
could someone guide me on such thing as Gemspec Marshaling? I've found the "dump" method:

rubygems/bundler/lib/bundler/yaml_serializer.rb

Line 13 in 560e37f

def dump_hash(hash)

Which is used to create bytes structure of YAML gemspec. I am not sure if I fully understand what is happening on lines above, I appreciate if somebody could explain (in English) why do we need so structure.

If I am able to read this code we just iterate over hash KV and assign V to K.

More general question - why we can't just use gemspec object as is?

PS I am not so clever at Ruby,
thanks for patience =)

[simi]

I'm not sure what are you looking for exactly, but gem specification is being serialized in Gem::Specification#to_yaml method.

[simi]

I still don't follow. Would you mind to explain what are you trying to achieve? What is your goal?

[ep4sh]

Sure, I'm developing my own gem registry with strongly-typed language. I was confused with metadata generation.

As I understood from the above, there we need to deflate gem specification, and this specification is not just a gemspec, but gemspec in odd format (well, of course just for me - since I just don't understand why), which started with newline:

rubygems/bundler/lib/bundler/yaml_serializer.rb

Line 14 in 560e37f

yaml = String.new("\n")

and then some sort of Ruby magic happening, which I couldn't understand =(

I appreciate it if you could point me to the Marshal.dump() explanation in human-friendly words, like RFC or something like that.

Thanks in advance,
P.

[ep4sh]

Hi, Josef, do you have any ideas how to parse this logic to adopt into any other PL ?

[ep4sh]

Nevermind, it looks like I've found the answer - https://docs.ruby-lang.org/en/2.1.0/marshal_rdoc.html
It's really strange having all that stuff, IMO

[simi]

@ep4sh ad Marshal, you can find more at https://github.com/ruby/ruby/blob/master/doc/marshal.rdoc