Class: GirFFI::ClassBase

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/gir_ffi/class_base.rb

Overview

Base class for all generated classes. Contains code for dealing with the generated Struct classes.

Direct Known Subclasses

ObjectBase

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

._allocate ⇒ Object 



72
73
74
75
76
 
# File 'lib/gir_ffi/class_base.rb', line 72

def _allocate
  obj = _real_new
  obj.instance_variable_set :@struct, self::Struct.new
  obj
end

.direct_wrap(ptr) ⇒ Object

Wrap the passed pointer in an instance of the current class. Will not do any casting to subtypes.



65
66
67
68
69
70
 
# File 'lib/gir_ffi/class_base.rb', line 65

def direct_wrap ptr
  return nil if !ptr or ptr.null?
  obj = _real_new
  obj.instance_variable_set :@struct, self::Struct.new(ptr.to_ptr)
  obj
end

.from(val) ⇒ Object

Pass-through casting method. This may become a type checking method. It is overridden by GValue to implement wrapping of plain Ruby objects.



81
82
83
 
# File 'lib/gir_ffi/class_base.rb', line 81

def from val
  val
end

.gir_ffi_builder ⇒ Object 



42
43
44
 
# File 'lib/gir_ffi/class_base.rb', line 42

def gir_ffi_builder
  self.const_get :GIR_FFI_BUILDER
end

.gir_info ⇒ Object 



38
39
40
 
# File 'lib/gir_ffi/class_base.rb', line 38

def gir_info
  self.const_get :GIR_INFO
end

.setup_and_call(method, *arguments, &block) ⇒ Object 



24
25
26
27
28
29
30
31
32
33
34
35
 
# File 'lib/gir_ffi/class_base.rb', line 24

def self.setup_and_call method, *arguments, &block
  result = self.ancestors.any? do |klass|
    klass.respond_to?(:setup_method) &&
      klass.setup_method(method.to_s)
  end

  unless result
    raise RuntimeError, "Unable to set up method #{method} in #{self}"
  end

  self.send method, *arguments, &block
end

.setup_instance_method(name) ⇒ Object 



50
51
52
 
# File 'lib/gir_ffi/class_base.rb', line 50

def setup_instance_method name
  gir_ffi_builder.setup_instance_method name
end

.setup_method(name) ⇒ Object 



46
47
48
 
# File 'lib/gir_ffi/class_base.rb', line 46

def setup_method name
  gir_ffi_builder.setup_method name
end

.wrap(ptr) ⇒ Object

Wrap the passed pointer in an instance of the current class, or a descendant type if applicable.



59
60
61
 
# File 'lib/gir_ffi/class_base.rb', line 59

def wrap ptr
  direct_wrap ptr
end

Instance Method Details

#setup_and_call(method, *arguments, &block) ⇒ Object 



11
12
13
14
15
16
17
18
19
20
21
22
 
# File 'lib/gir_ffi/class_base.rb', line 11

def setup_and_call method, *arguments, &block
  result = self.class.ancestors.any? do |klass|
    klass.respond_to?(:setup_instance_method) &&
      klass.setup_instance_method(method.to_s)
  end

  unless result
    raise RuntimeError, "Unable to set up instance method #{method} in #{self}"
  end

  self.send method, *arguments, &block
end