-;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; Package: UFFI -*-
;;;; *************************************************************************
;;;; FILE IDENTIFICATION
;;;;
;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Feb 2002
;;;;
-;;;; Copyright (c) 2002 Kevin M. Rosenberg
+;;;; $Id: objects.cl,v 1.26 2002/09/30 09:08:48 kevin Exp $
;;;;
-;;;; $Id: objects.cl,v 1.2 2002/03/10 00:11:47 kevin Exp $
+;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
-;;;; This file is part of the UFFI.
-;;;;
-;;;; UFFI is free software; you can redistribute it and/or modify
-;;;; it under the terms of the GNU General Public License (version 2) as
-;;;; published by the Free Software Foundation.
-;;;;
-;;;; UFFI is distributed in the hope that it will be useful,
-;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;;;; GNU General Public License for more details.
-;;;;
-;;;; You should have received a copy of the GNU General Public License
-;;;; along with UFFI; if not, write to the Free Software
-;;;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+;;;; UFFI users are granted the rights to distribute and use this software
+;;;; as governed by the terms of the Lisp Lesser GNU Public License
+;;;; (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)
-(defmacro allocate-foreign-object (type)
- #+cmu
- `(alien:make-alien ,(convert-from-uffi-type type :allocation))
- #+lispworks
- `(fli:allocate-foreign-object :type ',(convert-from-uffi-type type :allocate))
- #+allegro
- `(ff:allocate-fobject ',(convert-from-uffi-type type :allocate) :c)
+(defun size-of-foreign-type (type)
+ #+lispworks (fli:size-of type)
+ #+allegro (ff:sizeof-fobject type)
+ #+cmu (ash (eval `(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."
+ (if (eq size :unspecified)
+ (progn
+ #+cmu
+ `(alien:make-alien ,(convert-from-uffi-type (eval type) :allocation))
+ #+lispworks
+ `(fli:allocate-foreign-object :type ',(convert-from-uffi-type type :allocate))
+ #+allegro
+ `(ff:allocate-fobject ,(convert-from-uffi-type type :allocate) :c)
+ #+mcl
+ `(new-ptr ,(size-of-foreign-type (convert-from-uffi-type type :allocation)))
+ )
+ (progn
+ #+cmu
+ `(alien:make-alien ,(convert-from-uffi-type (eval type) :allocation) ,size)
+ #+lispworks
+ `(fli:allocate-foreign-object :type ',(convert-from-uffi-type type :allocate) :nelems ,size)
+ #+allegro
+ `(ff:allocate-fobject '(:array ,(convert-from-uffi-type (eval type) :allocate) ,(eval size)) :c)
+ #+mcl
+ `(new-ptr (* ,size ,(size-of-foreign-type (convert-from-uffi-type type :allocation))))
+ )))
+
(defmacro free-foreign-object (obj)
#+cmu
`(alien:free-alien ,obj)
`(fli:free-foreign-object ,obj)
#+allegro
`(ff:free-fobject ,obj)
+ #+mcl
+ `(dispose-ptr ,obj)
)
(defmacro null-pointer-p (obj)
#+lispworks `(fli:null-pointer-p ,obj)
#+allegro `(zerop ,obj)
#+cmu `(alien:null-alien ,obj)
+ #+mcl `(ccl:%null-ptr-p ,obj)
)
-(def-constant +null-c-string-pointer+
- #+cmu nil
- #+allegro 0
- #+lispworks (fli:make-pointer :address 0 :type '(:unsigned :char)))
-
(defmacro make-null-pointer (type)
- #+(or allegro cmu) (declare (ignore type))
+ #+(or allegro cmu mcl) (declare (ignore type))
#+cmu `(system:int-sap 0)
#+allegro 0
- #+lispworks `(fli:make-pointer :address 0 :type ',type)
+ #+lispworks `(fli:make-pointer :address 0 :type ,type)
+ #+mcl `(ccl:%null-ptr)
+ )
+
+(defmacro char-array-to-pointer (obj)
+ #+cmu `(alien:cast ,obj (* (alien:unsigned 8)))
+ #+lispworks `(fli:make-pointer :type '(:unsigned :char)
+ :address (fli:pointer-address ,obj))
+ #+allegro obj
+ #+mcl obj
)
(defmacro deref-pointer (ptr type)
"Returns a object pointed"
- #+(or lispworks cmu) (declare (ignore type))
+ #+(or cmu lispworks) (declare (ignore type))
#+cmu `(alien:deref ,ptr)
#+lispworks `(fli:dereference ,ptr)
- #+allegro `(ff:fslot-value-typed ,type :c ,ptr)
+ #+allegro `(ff:fslot-value-typed ,(convert-from-uffi-type type :deref) :c ,ptr)
+ #+mcl `(ccl:pref ,ptr ,(convert-from-uffi-type type :deref))
)
+#+mcl
+(defmacro deref-pointer-set (ptr type value)
+ `(setf (ccl:pref ,ptr ,(convert-from-uffi-type type :deref)) ,value))
+
+#+mcl
+(defsetf deref-pointer deref-pointer-set)
+
+#+(or lispworks (and mcl (not openmcl))) ;; with LW, deref is a character
+(defmacro ensure-char-character (obj)
+ obj)
+
+#+(or allegro cmu openmcl)
+(defmacro ensure-char-character (obj)
+ `(code-char ,obj))
+
+#+(or lispworks (and mcl (not openmcl)))
+(defmacro ensure-char-integer (obj)
+ `(char-code ,obj))
+
+#+(or allegro cmu openmcl)
+(defmacro ensure-char-integer (obj)
+ obj)
+
(defmacro pointer-address (obj)
#+cmu
`(system:sap-int (alien:alien-sap ,obj))
`(fli:pointer-address ,obj)
#+allegro
obj
+ #+mcl
+ `(ccl:%ptr-to-int ,obj)
+ )
+
+;; TYPE is evaluated.
+#-mcl
+(defmacro with-foreign-object ((var type) &rest body)
+ #-(or cmu lispworks) ; default version
+ `(let ((,var (allocate-foreign-object ,type)))
+ (unwind-protect
+ (progn ,@body)
+ (free-foreign-object ,var)))
+ #+cmu
+ (let ((obj (gensym)))
+ `(alien:with-alien ((,obj ,(convert-from-uffi-type (eval type) :allocate)))
+ (let ((,var (alien:addr ,obj)))
+ ,@body)))
+ #+lispworks
+ `(fli:with-dynamic-foreign-objects ((,var ,(convert-from-uffi-type
+ (eval type) :allocate)))
+ ,@body)
)
+
+#-mcl
+(defmacro with-foreign-objects (bindings &rest body)
+ (if bindings
+ `(with-foreign-object ,(car bindings)
+ (with-foreign-objects ,(cdr bindings)
+ ,@body))
+ `(progn ,@body)))
+
+#+mcl
+(defmacro with-foreign-objects (bindings &rest body)
+ (let ((params nil) type count)
+ (dolist (spec (reverse bindings)) ;keep order - macroexpands to let*
+ (setf type (convert-from-uffi-type (eval (nth 1 spec)) :allocate))
+ (setf count 1)
+ (when (and (listp type) (eq (first type) :array))
+ (setf count (nth 2 type))
+ (unless (integerp count) (error "Invalid size for array: ~a" type))
+ (setf type (nth 1 type)))
+ (push (list (first spec) (* count (size-of-foreign-type type))) params))
+ `(ccl:%stack-block ,params ,@body)))
+
+#+mcl
+(defmacro with-foreign-object ((var type) &rest body)
+ `(with-foreign-objects ((,var ,type))
+ ,@body))
+
projects / uffi.git / blobdiff