Sha256: 14a5f637d45e7c2ca71c9a3481ba6859924f570953f59097524d111960cbf628
Contents?: true
Size: 1.77 KB
Versions: 9
Compression:
Stored size: 1.77 KB
Contents
module GLib
load_class :Array
# Overrides for GArray, GLib's automatically growing array. It should not
# be necessary to create objects of this class from Ruby directly.
class Array
include Enumerable
attr_reader :element_type
def element_type= val
@element_type = val
check_element_size_match
end
class << self
undef :new
def new type
ptr = Lib.g_array_new(0, 0, calculated_element_size(type))
wrap type, ptr
end
end
def append_vals data
bytes = GirFFI::InPointer.from_array element_type, data
len = data.length
Lib.g_array_append_vals(self, bytes, len)
self
end
# Re-implementation of the g_array_index macro
def index idx
ptr = @struct[:data].get_pointer(idx * get_element_size)
GirFFI::ArgHelper.cast_from_pointer(element_type, ptr)
end
def each
@struct[:len].times.each do |idx|
yield index(idx)
end
end
def get_element_size
GLib.array_get_element_size self
end
def self.wrap elmttype, ptr
super(ptr).tap do |it|
break if it.nil?
it.element_type = elmttype
end
end
def self.from elmtype, it
case it
when self then it
when FFI::Pointer then wrap elmtype, it
else self.new(elmtype).tap {|arr| arr.append_vals it }
end
end
private
def self.calculated_element_size type
ffi_type = GirFFI::TypeMap.map_basic_type_or_string(type)
FFI.type_size(ffi_type)
end
def calculated_element_size
self.class.calculated_element_size self.element_type
end
def check_element_size_match
unless calculated_element_size == self.get_element_size
raise "Element sizes do not match"
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems