Module: SorbetRails::SorbetUtils

Extended by:
T::Sig
Defined in:
lib/sorbet-rails/sorbet_utils.rb

Class Method Summary collapse

Class Method Details

.get_ordered_parameters_with_type(signature) ⇒ Object 



45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
 
# File 'lib/sorbet-rails/sorbet_utils.rb', line 45

def self.get_ordered_parameters_with_type(signature)
  # extract original method param from signature
  # https://github.com/sorbet/sorbet/blob/master/gems/sorbet-runtime/lib/types/private/methods/signature.rb#L5-L8
  params = []
  signature.arg_types.each do |arg_type|
    # could be :opt, but doesn't matter
    params << [:req, arg_type[0], arg_type[1]]
  end
  signature.req_kwarg_names.each do |kwarg_name|
    # could be :key, but doesn't matter
    params << [:keyreq, kwarg_name, signature.kwarg_types[kwarg_name]]
  end
  if signature.has_rest
    params << [:rest, signature.rest_name, signature.rest_type]
  end
  if signature.has_keyrest
    params << [:keyrest, signature.keyrest_name, signature.keyrest_type]
  end
  if !signature.block_name.nil?
    params << [:block, signature.block_name, signature.block_type]
  end
  params
end

.parameters_from_method_def(method_def) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
 
# File 'lib/sorbet-rails/sorbet_utils.rb', line 10

def self.parameters_from_method_def(method_def)
  signature = T::Private::Methods.signature_for_method(method_def)

  parameters_with_type = signature.nil? ?
    method_def.parameters.map { |p| p + ['T.untyped'] } : # append untyped to each
    get_ordered_parameters_with_type(signature)

  parameters_with_type.map do |param_def|
    param_name = param_def[1]
    prefix =
      case param_def[0]
      when :rest; '*'
      when :keyrest; '**'
      when :block; '&'
      # being comprehensive
      when :req, :opt; ''
      when :key, :keyreq; ''
      else ''
      end

    param_type = param_def[2].to_s
    if param_def[0] == :block
      # special case `.void` in a proc
      # see https://github.com/sorbet/sorbet/blob/master/gems/sorbet-runtime/lib/types/types/proc.rb#L10
      param_type = param_type.gsub('returns(<VOID>)', 'void')
    end

    ::Parlour::RbiGenerator::Parameter.new("#{prefix}#{param_name}", type: param_type)
  end
end