Contents

# frozen_string_literal: true
require 'gir_ffi/builders/base_return_value_builder'
require 'gir_ffi/builders/ruby_to_c_convertor'

module GirFFI
  module Builders
    # Implements building post-processing statements for return values of
    # callbacks.
    class CallbackReturnValueBuilder < BaseReturnValueBuilder
      def post_conversion
        if has_post_conversion?
          if type_info.flattened_tag == :object
            ["#{post_converted_name} = #{post_convertor.conversion}.to_ptr"]
          else
            ["#{post_converted_name} = #{post_convertor.conversion}"]
          end
        else
          []
        end
      end

      def has_post_conversion?
        relevant? && needs_ruby_to_c_conversion?
      end

      def needs_ruby_to_c_conversion?
        type_info.needs_ruby_to_c_conversion_for_callbacks?
      end

      private

      def post_convertor
        @post_convertor ||= RubyToCConvertor.new(type_info, post_convertor_argument)
      end

      def post_convertor_argument
        if ownership_transfer == :everything && specialized_type_tag == :object
          "#{capture_variable_name}.ref"
        else
          capture_variable_name
        end
      end
    end
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
gir_ffi-0.10.2	lib/gir_ffi/builders/callback_return_value_builder.rb
gir_ffi-0.10.1	lib/gir_ffi/builders/callback_return_value_builder.rb
gir_ffi-0.10.0	lib/gir_ffi/builders/callback_return_value_builder.rb
gir_ffi-0.10.0.pre1	lib/gir_ffi/builders/callback_return_value_builder.rb
gir_ffi-0.9.5	lib/gir_ffi/builders/callback_return_value_builder.rb