Alias types in schema lead to a bug

[vladfaust]

  type payload : Bytes

in src/worcr/model/job.cr:3: expanding macro

    include Onyx::SQL::Model
    ^

in macro 'included' /home/faust/Projects/worcr2/worcr/lib/onyx-sql/src/onyx-sql/model/enums.cr:2, line 12:

   1.     macro finished
   2.       
   3.         {% getters = @type.methods.select do |_def|
   4.   _def.body.is_a?(InstanceVar)
   5. end
   6. fields = getters.select do |g|
   7.   if g.return_type.is_a?(Union)
   8.     type = g.return_type.types.find do |t|
   9.       !t.is_a?(Nil)
  10.     end
  11.     if type.resolve < Enumerable
> 12.       !(type.type_vars.first.resolve < Onyx::SQL::Model)
  13.     else
  14.       !(type.resolve < Onyx::SQL::Model)
  15.     end
  16.   end
  17. end
  18. references = getters.select do |g|
  19.   if g.return_type.is_a?(Union)
  20.     type = g.return_type.types.find do |t|
  21.       !t.is_a?(Nil)
  22.     end
  23.     if type.resolve < Enumerable
  24.       type.type_vars.first.resolve < Onyx::SQL::Model
  25.     else
  26.       type.resolve < Onyx::SQL::Model
  27.     end
  28.   end
  29. end
  30.  %}
  31. 
  32.         {% if fields.size > 0 %}
  33.           enum Field
  34.             {% for field in fields %}
  35.               {{ field.body.name[1..-1].camelcase }}
  36.             {% end %}
  37.           end
  38.         {% else %}
  39.           enum Field
  40.             Nop
  41.           end
  42.         {% end %}
  43. 
  44.         {% if references.size > 0 %}
  45.           enum Reference
  46.             {% for reference in references %}
  47.               {{ reference.body.name[1..-1].camelcase }}
  48.             {% end %}
  49.           end
  50.         {% else %}
  51.           enum Reference
  52.             Nop
  53.           end
  54.         {% end %}
  55.       
  56.     end
  57.   

expanding macro
in macro 'type' /home/faust/Projects/worcr2/worcr/lib/onyx-sql/src/onyx-sql/model/schema.cr:95, line 1:

>  1.     property payload : Bytes | Nil
   2. 
   3.     def payload!
   4.       @payload.not_nil!
   5.     end
   6. 
   7.     macro finished
   8.       
   9.     end
  10.   

expanding macro
in macro 'property' expanded macro: macro_140665494030752:583, line 6:

   1.       
   2.         
   3.           
   4.             @payload : Bytes | Nil
   5. 
>  6.             def payload : Bytes | Nil
   7.               @payload
   8.             end
   9. 
  10.             def payload=(@payload : Bytes | Nil)
  11.             end
  12.           
  13.         
  14.       
  15.     

undefined macro method 'Path#type_vars'

Current workaround: use Slice(UInt8) (i.e. do not use aliases).

[jkthorne]

I have run into similar issues

[jkthorne]

@vladfaust what did you do to fix this?

[vladfaust]

NB: You can click the mentioned commit to see its code

These lines in particular have fixed the bug: