# Builder that generates code to convert values from Ruby to C. Used by
# argument builders.
class GirFFI::Builders::RubyToCConvertor
  def initialize type_info, argument_name
    @type_info = type_info
    @argument_name = argument_name
  end

  def conversion
    args = conversion_arguments @argument_name
    "#{@type_info.argument_class_name}.from(#{args})"
  end

  def conversion_arguments name
    @type_info.extra_conversion_arguments.map(&:inspect).push(name).join(", ")
  end
end