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