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|
#! /usr/bin/env ruby
# -*- coding: UTF-8 -*-
#
require 'efl/ffi/eina_list'
#
class Array
def self.from_eina_list o
if o.is_a? Efl::EinaList::REinaList
o.to_ary
elsif o.is_a? FFI::Pointer
Efl::EinaList::REinaList.new(o).to_ary
else
raise ArgumentError.new "wrong argument #{o.class.name}"
end
end
end
module Efl
module EinaList
#
class EinaListStruct < FFI::Struct
layout :data, :pointer,
:next, :pointer,
:prev, :pointer,
:accounting, :pointer,
:magic, :uint,
end
#
class REinaList
include Enumerable
include Efl::ClassHelper
proxy_list [Efl::EinaList,'eina_list_'].freeze
def initialize o=nil
@ptr = (
case o
when FFI::Pointer
o
when NilClass
FFI::Pointer::NULL
when self.class
o.to_ptr
when Array
o.inject(FFI::Pointer::NULL) { |p,e| Efl::EinaList.eina_list_append p, e }
else
raise ArgumentError.new "wrong argument #{o.class.name}"
end
)
end
def free p=nil
return Efl::EinaList.eina_list_free p unless p.nil?
Efl::EinaList.eina_list_free @ptr
@ptr = nil
end
def each
p = @ptr
while p!=::FFI::Pointer::NULL
l = Efl::EinaList::EinaListStruct.new p
yield l[:data]
p = l[:next]
end
end
def to_ary
inject([]) { |s,e| s<<e }
end
# for fun and tests
def append p
@ptr = Efl::EinaList.eina_list_append @ptr, p
end
alias :<< :append
def prepend p
@ptr = Efl::EinaList.eina_list_prepend @ptr, p
end
alias :unshift :prepend
end
end
end
#
# EOF
|
