| Current Path : /usr/share/ruby/fiddle/ |
Linux gator3171.hostgator.com 4.19.286-203.ELK.el7.x86_64 #1 SMP Wed Jun 14 04:33:55 CDT 2023 x86_64 |
| Current File : //usr/share/ruby/fiddle/closure.rb |
module Fiddle
class Closure
# the C type of the return of the FFI closure
attr_reader :ctype
# arguments of the FFI closure
attr_reader :args
# Extends Fiddle::Closure to allow for building the closure in a block
class BlockCaller < Fiddle::Closure
# == Description
#
# Construct a new BlockCaller object.
#
# * +ctype+ is the C type to be returned
# * +args+ are passed the callback
# * +abi+ is the abi of the closure
#
# If there is an error in preparing the +ffi_cif+ or +ffi_prep_closure+,
# then a RuntimeError will be raised.
#
# == Example
#
# include Fiddle
#
# cb = Closure::BlockCaller.new(TYPE_INT, [TYPE_INT]) do |one|
# one
# end
#
# func = Function.new(cb, [TYPE_INT], TYPE_INT)
#
def initialize ctype, args, abi = Fiddle::Function::DEFAULT, &block
super(ctype, args, abi)
@block = block
end
# Calls the constructed BlockCaller, with +args+
#
# For an example see Fiddle::Closure::BlockCaller.new
#
def call *args
@block.call(*args)
end
end
end
end