;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Feb 2002
;;;;
-;;;; $Id: objects.lisp,v 1.13 2003/06/06 21:59:18 kevin Exp $
+;;;; $Id$
;;;;
;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
#+mcl `(ccl:%null-ptr)
)
+(defmacro make-pointer (addr type)
+ #+(or allegro mcl) (declare (ignore type))
+ #+(or cmu scl) `(alien:sap-alien (system:int-sap ,addr) (* ,(convert-from-uffi-type (eval type) :type)))
+ #+sbcl `(sb-alien:sap-alien (sb-sys:int-sap ,addr) (* ,(convert-from-uffi-type (eval type) :type)))
+ #+lispworks `(fli:make-pointer :address ,addr :type (quote ,(convert-from-uffi-type (eval type) :type)))
+ #+allegro addr
+ #+mcl `(ccl:%int-to-ptr ,addr)
+ )
+
+
(defmacro char-array-to-pointer (obj)
#+(or cmu scl) `(alien:cast ,obj (* (alien:unsigned 8)))
#+sbcl `(sb-alien:cast ,obj (* (sb-alien:unsigned 8)))
#+mcl
(defsetf deref-pointer deref-pointer-set)
-#+(or (and mcl (not openmcl))) ;; with LW, deref is a character
+#+lispworks
+(defmacro ensure-char-character (obj)
+ `(if (characterp ,obj) ,obj (code-char ,obj)))
+
+#+(and mcl (not openmcl))
(defmacro ensure-char-character (obj)
obj)
-#+(or allegro lispworks cmu sbcl scl openmcl)
+#+(or allegro cmu sbcl scl openmcl)
(defmacro ensure-char-character (obj)
`(code-char ,obj))
(defmacro ensure-char-integer (obj)
obj)
-;; Returns the numeric value of a byte at a pointer
-;; Highly optimized
-(defmacro byte-value-at-pointer (ptr)
- )
-
(defmacro pointer-address (obj)
#+(or cmu scl)
`(system:sap-int (alien:alien-sap ,obj))
`(with-foreign-objects ((,var ,type))
,@body))
+#+lispworks
+(defmacro with-cast-pointer ((binding-name pointer type) &body body)
+ `(fli:with-coerced-pointer (,binding-name
+ :type ',(convert-from-uffi-type (eval type) :type))
+ ,pointer
+ ,@body))
+
+#+(or cmu scl sbcl)
+(defmacro with-cast-pointer ((binding-name pointer type) &body body)
+ `(let ((,binding-name
+ (#+(or cmu scl) alien:cast
+ #+sbcl sb-alien:cast
+ ,pointer (* ,(convert-from-uffi-type (eval type) :type)))))
+ ,@body))
+
+#+(or allegro openmcl)
+(defmacro with-cast-pointer ((binding-name pointer type) &body body)
+ (declare (ignore type))
+ `(let ((,binding-name ,pointer))
+ ,@body))
+
+#-(or lispworks cmu scl sbcl allegro)
+(defmacro with-cast-pointer ((binding-name pointer type) &body body)
+ (declare (ignore binding-name pointer type))
+ '(error "WITH-CAST-POINTER not (yet) implemented for ~A"
+ (lisp-implementation-type)))
+
+(defmacro def-foreign-var (names type module)
+ #-lispworks (declare (ignore module))
+ (let ((foreign-name (if (atom names) names (first names)))
+ (lisp-name (if (atom names) (make-lisp-name names) (second names)))
+ #-allegro
+ (var-type (convert-from-uffi-type type :type)))
+ #+(or cmu scl)
+ `(alien:def-alien-variable (,foreign-name ,lisp-name) ,var-type)
+ #+sbcl
+ `(sb-alien:define-alien-variable (,foreign-name ,lisp-name) ,var-type)
+ #+allegro
+ `(define-symbol-macro ,lisp-name
+ (ff:fslot-value-typed (quote ,(convert-from-uffi-type type :deref))
+ :c (ff:get-entry-point ,foreign-name)))
+ #+lispworks
+ `(progn
+ (fli:define-foreign-variable (,lisp-name ,foreign-name)
+ :accessor :address-of
+ :type ,var-type
+ :module ,module)
+ (define-symbol-macro ,lisp-name (fli:dereference (,lisp-name)
+ :copy-foreign-object nil)))
+ #-(or allegro cmu scl sbcl lispworks)
+ `(define-symbol-macro ,lisp-name
+ '(error "DEF-FOREIGN-VAR not (yet) defined for ~A"
+ (lisp-implementation-type)))))