module GirFFI
  # Wraps GIBaseInfo struct, the base \type for all info types.
  # Decendant types will be implemented as needed.
  class IBaseInfo
    def initialize ptr
      @gobj = ptr
    end

    def to_ptr
      @gobj
    end

    # This is a helper method to construct a method returning an array, out
    # of the methods returning their number and the individual elements.
    #
    # For example, given the methods +n_foos+ and +foo+(+i+), this method
    # will create an additional method +foos+ returning all args.
    #
    # Provide the second parameter if the plural is not trivially
    # constructed by adding +s+ to the singular.
    def self.build_array_method method, single = nil
      method = method.to_s
      single ||= method[0..-2]
      count = method.sub(/^(get_)?/, "\\1n_")
      self.class_eval <<-CODE
	def #{method}
	  (0..(#{count} - 1)).map do |i|
	    #{single} i
	  end
	end
      CODE
    end

    private_class_method :new

    def name
      Lib.g_base_info_get_name @gobj
    end

    def info_type
      Lib.g_base_info_get_type @gobj
    end

    def namespace
      Lib.g_base_info_get_namespace @gobj
    end

    def safe_namespace
      namespace.gsub(/^(.)/) { $1.upcase }
    end

    def container
      ptr = Lib.g_base_info_get_container @gobj
      IRepository.wrap_ibaseinfo_pointer ptr
    end

    def deprecated?
      Lib.g_base_info_is_deprecated @gobj
    end

    def self.wrap ptr
      return nil if ptr.null?
      return new ptr
    end

    def == other
      Lib.g_base_info_equal @gobj, other.to_ptr
    end
  end
end