;;;; *************************************************************************
;;;; FILE IDENTIFICATION
;;;;
-;;;; Name: objects.cl
+;;;; Name: objects.lisp
;;;; Purpose: UFFI source to handle objects and pointers
;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Feb 2002
;;;;
-;;;; $Id: objects.lisp,v 1.12 2003/05/30 18:46:45 kevin Exp $
+;;;; $Id$
;;;;
;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
;;;; *************************************************************************
-(declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
-(in-package :uffi)
-
-(defun size-of-foreign-type (type)
- #+lispworks (fli:size-of type)
- #+allegro (ff:sizeof-fobject type)
- #+(or cmu scl) (ash (eval `(alien:alien-size ,type)) -3) ;; convert from bits to bytes
- #+sbcl (ash (eval `(sb-alien:alien-size ,type)) -3) ;; convert from bits to bytes
- #+clisp (values (ffi:size-of type))
- #+(and mcl (not openmcl))
- (let ((mcl-type (ccl:find-mactype type nil t)))
- (if mcl-type
- (ccl::mactype-record-size mcl-type)
- (ccl::record-descriptor-length (ccl:find-record-descriptor type t t)))) ;error if not a record
- #+openmcl (ccl::%foreign-type-or-record-size type :bytes)
- )
-
+(in-package #:uffi)
+(eval-when (:compile-toplevel :load-toplevel :execute)
+ (defun size-of-foreign-type (type)
+ #+lispworks (fli:size-of type)
+ #+allegro (ff:sizeof-fobject type)
+ #+(or cmu scl) (ash (eval `(alien:alien-size ,type)) -3) ;; convert from bits to bytes
+ #+sbcl (ash (eval `(sb-alien:alien-size ,type)) -3) ;; convert from bits to bytes
+ #+clisp (values (ffi:size-of type))
+ #+(and mcl (not openmcl))
+ (let ((mcl-type (ccl:find-mactype type nil t)))
+ (if mcl-type
+ (ccl::mactype-record-size mcl-type)
+ (ccl::record-descriptor-length (ccl:find-record-descriptor type t t)))) ;error if not a record
+ #+openmcl (ccl::%foreign-type-or-record-size type :bytes)
+ ))
+
(defmacro allocate-foreign-object (type &optional (size :unspecified))
"Allocates an instance of TYPE. If size is specified, then allocate
an array of TYPE with size SIZE. The TYPE parameter is evaluated."
#+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 `(ccl:pref ,ptr ,(convert-from-uffi-type type :deref))
)
-#+mcl
+#+(and mcl (not openmcl))
(defmacro deref-pointer-set (ptr type value)
`(setf (ccl:pref ,ptr ,(convert-from-uffi-type type :deref)) ,value))
-#+mcl
+#+(and mcl (not openmcl))
(defsetf deref-pointer deref-pointer-set)
-#+(or (and mcl (not openmcl))) ;; with LW, deref is a character
(defmacro ensure-char-character (obj)
- obj)
-
-#+(or allegro lispworks cmu sbcl scl openmcl)
-(defmacro ensure-char-character (obj)
- `(code-char ,obj))
+ #+(or (and mcl (not openmcl))) obj
+ #+(or allegro cmu sbcl scl openmcl) `(code-char ,obj)
+ ;; lispworks varies whether deref'ing array vs. slot access of a char
+ #+lispworks
+ `(if (characterp ,obj) ,obj (code-char ,obj)))
-#+(or lispworks (and mcl (not openmcl)))
(defmacro ensure-char-integer (obj)
- `(char-code ,obj))
+ #+(or (and mcl (not openmcl))) `(char-code ,obj)
+ #+(or allegro cmu sbcl scl openmcl) obj)
-#+(or allegro cmu sbcl scl openmcl)
-(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 ensure-char-storable (obj)
+ #+(or lispworks (and mcl (not openmcl))) obj
+ #+(or allegro cmu sbcl scl openmcl) `(char-code ,obj))
(defmacro pointer-address (obj)
#+(or cmu scl)
(progn ,@body)
(free-foreign-object ,var)))
#+(or cmu scl)
- (let ((obj (gensym)))
- `(alien:with-alien ((,obj ,(convert-from-uffi-type (eval type) :allocate)))
- (let ((,var (alien:addr ,obj)))
- ,@body)))
+ (let ((obj (gensym))
+ (ctype (convert-from-uffi-type (eval type) :allocate)))
+ (if (and (consp ctype) (eq 'array (car ctype)))
+ `(alien:with-alien ((,obj ,ctype))
+ (let* ((,var ,obj))
+ ,@body))
+ `(alien:with-alien ((,obj ,ctype))
+ (let* ((,var (alien:addr ,obj)))
+ ,@body))))
#+sbcl
- (let ((obj (gensym)))
- `(sb-alien:with-alien ((,obj ,(convert-from-uffi-type (eval type) :allocate)))
- (let ((,var (sb-alien:addr ,obj)))
- ,@body)))
+ (let ((obj (gensym))
+ (ctype (convert-from-uffi-type (eval type) :allocate)))
+ (if (and (consp ctype) (eq 'array (car ctype)))
+ `(sb-alien:with-alien ((,obj ,ctype))
+ (let* ((,var ,obj))
+ ,@body))
+ `(sb-alien:with-alien ((,obj ,ctype))
+ (let* ((,var (sb-alien:addr ,obj)))
+ ,@body))))
#+lispworks
`(fli:with-dynamic-foreign-objects ((,var ,(convert-from-uffi-type
(eval type) :allocate)))
`(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 openmcl)
+(defmacro with-cast-pointer ((binding-name pointer type) &body body)
+ (declare (ignore binding-name pointer type body))
+ '(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)))
+ #+(and openmcl darwinppc-target)
+ (setf foreign-name (concatenate 'string "_" foreign-name))
+ #+openmcl
+ `(define-symbol-macro ,lisp-name
+ (deref-pointer (ccl:foreign-symbol-address ,foreign-name) ,var-type))
+ #-(or allegro cmu scl sbcl lispworks openmcl)
+ `(define-symbol-macro ,lisp-name
+ '(error "DEF-FOREIGN-VAR not (yet) defined for ~A"
+ (lisp-implementation-type)))))
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