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Class: Fiddle::Closure::BlockCaller

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ::Fiddle::Closure
Instance Chain:
self, ::Fiddle::Closure
Inherits: Fiddle::Closure
Defined in: ext/fiddle/lib/fiddle/closure.rb

Overview

Extends ::Fiddle::Closure to allow for building the closure in a block

Class Method Summary

::Fiddle::Closure - Inherited

.new

Construct a new ::Fiddle::Closure object.

Instance Attribute Summary

::Fiddle::Closure - Inherited

#args

arguments of the FFI closure.
#ctype

the C type of the return of the FFI closure.

Instance Method Summary

::Fiddle::Closure - Inherited

#to_i

Returns the memory address for this closure.

Constructor Details

.new(ctype, args, abi = Fiddle::Function::DEFAULT, &block) ⇒ BlockCaller

Description

Construct a new BlockCaller object.

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)
[ GitHub ] 

  


# File 'ext/fiddle/lib/fiddle/closure.rb', line 34



def initialize ctype, args, abi = Fiddle::Function::DEFAULT, &block
  super(ctype, args, abi)
  @block = block
end


  







Instance Method Details



  

    #call(*args)  
  



  

    

Calls the constructed BlockCaller, with Fiddle::Closure#args



For an example see .new


  



  [ GitHub ]


  

  


# File 'ext/fiddle/lib/fiddle/closure.rb', line 43



def call *args
  @block.call(*args)
end