class GObject::RubyClosure

This class encapsulates Ruby blocks as GObject Closures.

Constants

BLOCK_STORE

Public Class Methods

marshaller(closure, return_value, n_param_values, param_values, _invocation_hint, _marshal_data) click to toggle source
# File lib/ffi-gobject/ruby_closure.rb, line 40
def self.marshaller(closure, return_value, n_param_values,
                    param_values, _invocation_hint, _marshal_data)
  rclosure = wrap(closure.to_ptr)

  args = n_param_values.times.map {|idx|
    Value.wrap(param_values.to_ptr + idx * Value::Struct.size).get_value
  }

  result = rclosure.invoke_block(*args)

  return_value.set_ruby_value(result) if return_value
end
new(&block) click to toggle source
# File lib/ffi-gobject/ruby_closure.rb, line 30
def self.new &block
  raise ArgumentError unless block_given?

  closure = wrap(new_simple(self::Struct.size, nil).to_ptr)
  closure.block = block
  closure.set_marshal Proc.new {|*args| marshaller(*args)}

  return closure
end

Public Instance Methods

block() click to toggle source
# File lib/ffi-gobject/ruby_closure.rb, line 16
def block
  BLOCK_STORE[@struct[:block_id]]
end
block=(block) click to toggle source
# File lib/ffi-gobject/ruby_closure.rb, line 20
def block= block
  id = block.object_id
  BLOCK_STORE[id] = block
  @struct[:block_id] = id
end
invoke_block(*args) click to toggle source
# File lib/ffi-gobject/ruby_closure.rb, line 26
def invoke_block *args
  block.call(*args)
end