ensure-char-character
— Ensures that a dereferenced :char
pointer is
a character.
(ensure-char-character
object)
|
Either a character or a integer specifying a character code. |
returns |
A character. |
Ensures that an objects obtained by dereferencing
:char
and :unsigned-char
pointers are a lisp character.
(let ((fs (convert-to-foreign-string "a"))) (prog1 (ensure-char-character (deref-pointer fs :char)) (free-foreign-object fs))) => #\a
Depending upon the implementation and what UFFI expects, this macro may signal an error if the object is not a character or integer.