lib/solargraph/pin/closure.rb


# frozen_string_literal: true


module Solargraph
  module Pin
    class Closure < Base
      # @return [::Symbol] :class or :instance

      attr_reader :scope

      # @param scope [::Symbol] :class or :instance

      # @param generics [::Array<Pin::Parameter>, nil]

      def initialize scope: :class, generics: nil, **splat
        super(**splat)
        @scope = scope
        @generics = generics
      end

      def context
        @context ||= begin
          result = super
          if scope == :instance
            result.reduce_class_type
          else
            result
          end
        end
      end

      def binder
        @binder || context
      end

      # @return [::Array<String>]

      def gates
        # @todo This check might not be necessary. There should always be a

        #   root pin

        closure ? closure.gates : ['']
      end

      # @return [::Array<String>]

      def generics
        @generics ||= docstring.tags(:generic).map(&:name)
      end

      # @return [String]

      def to_rbs
        rbs_generics + return_type.to_rbs
      end

      # @return [String]

      def rbs_generics
        return '' if generics.empty?

        '[' + generics.map { |gen| gen.to_s }.join(', ') + '] '
      end
    end
  end
end