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ANSI Common Lisp  7 Objects 7.7 Dictionary of Objects
| 7.7.22 make-load-form-saving-slots |
Function |
- Syntax:
-
make-load-form-saving-slots
object &key slot-names environment
 creation-form, initialization-form
- Arguments and Values:
-
object - an object.
slot-names - a list.
environment - an environment object.
creation-form - a form.
initialization-form - a form.
- Description:
-
Returns forms that, when evaluated, will construct an
object equivalent to object, without executing
initialization forms. The slots in the new object
that correspond to initialized slots in object are
initialized using the values from object. Uninitialized slots
in object are not initialized in the new object.
make-load-form-saving-slots works for any instance of
standard-object or structure-object.
Slot-names is a list of the names of the
slots to preserve. If slot-names is not
supplied, its value is all of the local slots.
make-load-form-saving-slots returns two values,
thus it can deal with circular structures.
Whether the result is useful in an application depends on
whether the object's type and slot contents
fully capture the application's idea of the object's state.
Environment is the environment in which the forms will be processed.
- See Also:
-
make-load-form,
make-instance,
setf,
slot-value,
slot-makunbound
- Notes:
-
make-load-form-saving-slots can be useful in user-written
make-load-form methods.
When the object is an instance of standard-object,
make-load-form-saving-slots could return a creation form that
calls allocate-instance and an initialization form that
contains calls to setf of slot-value and
slot-makunbound, though other functions of similar effect
might actually be used.
- Allegro CL Implementation Details:
-
None.
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