Class: GObject::RubyClosure

Inherits:
Closure
  • Object
show all
Defined in:
lib/ffi-gobject/ruby_closure.rb

Overview

Encapsulates Ruby blocks as GObject Closures.

Defined Under Namespace

Classes: Struct

Constant Summary collapse

BLOCK_STORE =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

{}

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Closure

#invoke, #set_marshal, #store_pointer

Constructor Details

#initialize(&block) ⇒ RubyClosure

Returns a new instance of RubyClosure.



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# File 'lib/ffi-gobject/ruby_closure.rb', line 20

def initialize(&block)
  block or raise ArgumentError, "Block needed"

  initialize_simple(self.class::Struct.size, nil)
  self.block = block
  set_marshal proc { |*args| self.class.marshaller(*args) }
end

Class Method Details

.marshaller(closure, return_value, param_values, _invocation_hint, _marshal_data) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/ffi-gobject/ruby_closure.rb', line 29

def self.marshaller(closure, return_value, param_values, _invocation_hint,
                    _marshal_data)
  # TODO: Improve by registering RubyClosure as a GObject type
  rclosure = wrap(closure.to_ptr)
  param_values ||= []

  args = param_values.map(&:get_value)

  result = rclosure.invoke_block(*args)

  return_value&.set_value(result)
end

Instance Method Details

#invoke_block(*args) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

TODO: Re-structure so invoke_block can become a private method



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# File 'lib/ffi-gobject/ruby_closure.rb', line 44

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