Module: RBS::Inline::AST::Annotations::Utils

Included in:
ClassDecl, Generic, ModuleDecl
Defined in:
lib/rbs/inline/ast/annotations.rb

Overview

@rbs!

type t = VarType
       | ReturnType
       | Use
       | Inherits
       | Generic
       | ModuleSelf
       | Skip
       | MethodTypeAssertion | TypeAssertion | SyntaxErrorAssertion | Dot3Assertion
       | Application
       | RBSAnnotation
       | Override
       | IvarType
       | Embedded
       | Method
       | SplatParamType
       | DoubleSplatParamType
       | BlockType
       | ModuleDecl
       | ClassDecl
     #  | Def
     #  | AttrReader | AttrWriter | AttrAccessor
     #  | Include | Extend | Prepend
     #  | Alias

Instance Method Summary collapse

Instance Method Details

#translate_super_class(type) ⇒ Object 



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# File 'lib/rbs/inline/ast/annotations.rb', line 68

def translate_super_class(type)
  case type
  when Types::ClassInstance
    RBS::AST::Declarations::Class::Super.new(
      name: type.name,
      args: type.args,
      location: nil
    )
  end
end

#translate_type_name(tree) ⇒ Object

Assumes the tree is generated through ‘#parse_module_name`

Returns a type name, or ‘nil` if the tree is something invalid.

Parameters:

  • tree —

    – A tree object that is generated through ‘#parse_module_name`



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# File 'lib/rbs/inline/ast/annotations.rb', line 86

def translate_type_name(tree)
  tokens = tree.non_trivia_trees

  absolute = tokens.shift
  path = [] #: Array[Symbol]

  tokens.each_slice(2) do |name, colon2|
    if colon2
      name or return nil
      name.is_a?(Array) or return nil

      path << name[1].to_sym
    end
  end

  last_token = tokens.pop
  last_token.is_a?(Array) or return nil
  name = last_token[1].to_sym

  namespace = Namespace.new(path: path, absolute: absolute ? true : false)
  TypeName.new(namespace: namespace, name: name)
end

#translate_type_param(tree) ⇒ Object 



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# File 'lib/rbs/inline/ast/annotations.rb', line 34

def translate_type_param(tree)
  unchecked = tree.nth_token?(0) != nil
  inout =
    case tree.nth_token?(1)&.[](0)
    when nil
      :invariant
    when :kIN
      :contravariant
    when :kOUT
      :covariant
    end #: RBS::AST::TypeParam::variance

  name = tree.nth_token?(2)&.last

  if bound = tree.nth_tree?(3)
    if type = bound.nth_type?(1)
      case type
      when Types::ClassSingleton, Types::ClassInstance, Types::Interface
        upper_bound = type
      end
    end
  end

  if name
    RBS::AST::TypeParam.new(
      name: name.to_sym,
      variance: inout,
      upper_bound: upper_bound,
      location: nil
    ).unchecked!(unchecked)
  end
end