Allow to find modules and classes using crystal tool

[faustinoaq]

Hi people!

Currently crystal tool hierarchy isn't showing class location.

class MiClase
end

a = MiClase.new
a

$ crystal tool hierarchy mi_clase.cr -e MiClase --no-color
- class Object (4 bytes)
  |
  +- class Reference (4 bytes)
     |
     +- class MiClase (4 bytes)

I think it is very useful to find clases using extensions like vscode-crystal-lang

This idea was suggested by @Qwerp-Derp

Can you add support for finding the definition of a function/class/module/etc., like with other language plugins in VSCode?
So for example, in this code:

def foo
  Bar::Baz(10)
end

If I go to Bar and right-click, and select "Peek definition", it should bring me to where Bar is defined

Some similar to #4766

/cc @makenowjust 😅

[asterite]

I think we can have the docs tool output JSON format and include location of types and methods. That way you can solve your use case by using that.

[straight-shoota]

#4746 implements this already. For types it is an array locations, for methods and macros it's source_link. Though the latter could certainly be improved.

[faustinoaq]

#4746 implements this already.

Hi @straight-shoota, Would be possible to output modules and classes in JSON using crystal tool command?

[straight-shoota]

What command do you refer to? crystal tool hierarchy can already output JSON (--format json).

[faustinoaq]

@straight-shoota I mean class and module location file:line:column to be able to use it within extensions

[straight-shoota]

For the hierarchy command or docs?

It should be easily doable to include this in the docs JSON. I don't know much about the hierarchy tool, but since it works on ASTNodes it should be no big deal as well.

[baelter]

Have someone looked into this yet? Otherwise I might to help the editor integrations out there.