+++ /dev/null
-;; Common Lisp bindings for GTK+ v2.0
-;; Copyright (C) 1999-2001 Espen S. Johnsen <esj@stud.cs.uit.no>
-;;
-;; This library is free software; you can redistribute it and/or
-;; modify it under the terms of the GNU Lesser General Public
-;; License as published by the Free Software Foundation; either
-;; version 2 of the License, or (at your option) any later version.
-;;
-;; This library 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
-;; Lesser General Public License for more details.
-;;
-;; You should have received a copy of the GNU Lesser General Public
-;; License along with this library; if not, write to the Free Software
-;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-;; $Id: gforeign.lisp,v 1.14 2002/04/02 14:52:25 espen Exp $
-
-(in-package "GLIB")
-
-;;;; Type methods
-
-(defvar *type-methods* (make-hash-table))
-
-(defun ensure-type-method-fun (fname)
- (unless (fboundp fname)
- (setf
- (symbol-function fname)
- #'(lambda (type-spec &rest args)
- (apply
- (find-applicable-type-method type-spec fname) type-spec args)))))
-
-(defmacro define-type-method-fun (fname lambda-list)
- (declare (ignore lambda-list))
- `(defun ,fname (type-spec &rest args)
- (apply
- (find-applicable-type-method type-spec ',fname) type-spec args)))
-
-
-(defun ensure-type-name (type)
- (etypecase type
- (symbol type)
- (pcl::class (class-name type))))
-
-(defun add-type-method (type fname function)
- (push
- (cons fname function)
- (gethash (ensure-type-name type) *type-methods*)))
-
-(defun find-type-method (type fname)
- (cdr (assoc fname (gethash (ensure-type-name type) *type-methods*))))
-
-(defun find-applicable-type-method (type-spec fname &optional (error t))
- (flet ((find-superclass-method (class)
- (when (and class (class-finalized-p class))
-; (unless (class-finalized-p class)
-; (finalize-inheritance class))
- (dolist (super (cdr (pcl::class-precedence-list class)))
- (return-if (find-type-method super fname)))))
- (find-expanded-type-method (type-spec)
- (multiple-value-bind (expanded-type-spec expanded-p)
- (type-expand-1 type-spec)
- (cond
- (expanded-p
- (find-applicable-type-method expanded-type-spec fname nil))
- ((neq type-spec t)
- (find-applicable-type-method t fname nil))))))
-
- (or
- (typecase type-spec
- (pcl::class
- (or
- (find-type-method type-spec fname)
- (find-superclass-method type-spec)))
- (symbol
- (or
- (find-type-method type-spec fname)
- (find-expanded-type-method type-spec)
- (find-superclass-method (find-class type-spec nil))))
- (cons
- (or
- (find-type-method (first type-spec) fname)
- (find-expanded-type-method type-spec)))
- (t
- (error "Invalid type specifier ~A" type-spec)))
- (and
- error
- (error
- "No applicable method for ~A when called with type specifier ~A"
- fname type-spec)))))
-
-(defmacro deftype-method (fname type lambda-list &body body)
- `(progn
- (ensure-type-method-fun ',fname)
- (add-type-method ',type ',fname #'(lambda ,lambda-list ,@body))
- ',fname))
-
-;; To make the compiler happy
-(eval-when (:compile-toplevel :load-toplevel :execute)
- (define-type-method-fun translate-type-spec (type-spec))
- (define-type-method-fun size-of (type-spec))
- (define-type-method-fun translate-to-alien (type-spec expr &optional weak-ref))
- (define-type-method-fun translate-from-alien (type-spec expr &optional weak-ref))
- (define-type-method-fun cleanup-alien (type-spec sap &otional weak-ref))
- (define-type-method-fun unreference-alien (type-spec sap)))
-
-
-;;;;
-
-(defvar *type-function-cache* (make-hash-table :test #'equal))
-
-(defun get-cached-function (type-spec fname)
- (cdr (assoc fname (gethash type-spec *type-function-cache*))))
-
-(defun set-cached-function (type-spec fname function)
- (push (cons fname function) (gethash type-spec *type-function-cache*))
- function)
-
-
-(defun intern-argument-translator (type-spec)
- (or
- (get-cached-function type-spec 'argument-translator)
- (set-cached-function type-spec 'argument-translator
- (compile
- nil
- `(lambda (object)
- (declare (ignorable object))
- ,(translate-to-alien type-spec 'object t))))))
-
-(defun intern-return-value-translator (type-spec)
- (or
- (get-cached-function type-spec 'return-value-translator)
- (set-cached-function type-spec 'return-value-translator
- (compile
- nil
- `(lambda (alien)
- (declare (ignorable alien))
- ,(translate-from-alien type-spec 'alien nil))))))
-
-(defun intern-cleanup-function (type-spec)
- (or
- (get-cached-function type-spec 'cleanup-function)
- (set-cached-function type-spec 'cleanup-function
- (compile
- nil
- `(lambda (alien)
- (declare (ignorable alien))
- ,(cleanup-alien type-spec 'alien t))))))
-
-
-
-;; Returns a function to write an object of the specified type
-;; to a memory location
-(defun intern-writer-function (type-spec)
- (or
- (get-cached-function type-spec 'writer-function)
- (set-cached-function type-spec 'writer-function
- (compile
- nil
- `(lambda (value sap offset)
- (declare (ignorable value sap offset))
- (setf
- (,(sap-ref-fname type-spec) sap offset)
- ,(translate-to-alien type-spec 'value nil)))))))
-
-;; Returns a function to read an object of the specified type
-;; from a memory location
-(defun intern-reader-function (type-spec)
- (or
- (get-cached-function type-spec 'reader-function)
- (set-cached-function type-spec 'reader-function
- (compile
- nil
- `(lambda (sap offset)
- (declare (ignorable sap offset))
- ,(translate-from-alien
- type-spec `(,(sap-ref-fname type-spec) sap offset) t))))))
-
-(defun intern-destroy-function (type-spec)
- (if (atomic-type-p type-spec)
- #'(lambda (sap offset)
- (declare (ignore sap offset)))
- (or
- (get-cached-function type-spec 'destroy-function)
- (set-cached-function type-spec 'destroy-function
- (compile
- nil
- `(lambda (sap offset)
- (declare (ignorable sap offset))
- ,(unreference-alien
- type-spec `(,(sap-ref-fname type-spec) sap offset))))))))
-
-
-
-;;;;
-
-(defconstant +bits-per-unit+ 8
- "Number of bits in an addressable unit (byte)")
-
-;; Sizes of fundamental C types in addressable units
-(defconstant +size-of-short+ 2)
-(defconstant +size-of-int+ 4)
-(defconstant +size-of-long+ 4)
-(defconstant +size-of-sap+ 4)
-(defconstant +size-of-float+ 4)
-(defconstant +size-of-double+ 8)
-
-(defun sap-ref-unsigned (sap offset)
- (sap-ref-32 sap offset))
-
-(defun sap-ref-signed (sap offset)
- (signed-sap-ref-32 sap offset))
-
-(defun sap-ref-fname (type-spec)
- (let ((alien-type-spec (mklist (translate-type-spec type-spec))))
- (ecase (first alien-type-spec)
- (unsigned
- (ecase (second alien-type-spec)
- (8 'sap-ref-8)
- (16 'sap-ref-16)
- (32 'sap-ref-32)
- (64 'sap-ref-64)))
- (signed
- (ecase (second alien-type-spec)
- (8 'signed-sap-ref-8)
- (16 'signed-sap-ref-16)
- (32 'signed-sap-ref-32)
- (64 'signed-sap-ref-64)))
- (system-area-pointer 'sap-ref-sap)
- (single-float 'sap-ref-single)
- (double-float 'sap-ref-double))))
-
-
-;;;; Foreign function call interface
-
-(defvar *package-prefix* nil)
-
-(defun set-package-prefix (prefix &optional (package *package*))
- (let ((package (find-package package)))
- (delete-if #'(lambda (assoc) (eq (car assoc) package)) *package-prefix*)
- (push (cons package prefix) *package-prefix*))
- prefix)
-
-(defun package-prefix (&optional (package *package*))
- (let ((package (find-package package)))
- (or
- (cdr (assoc package *package-prefix*))
- (substitute #\_ #\- (string-downcase (package-name package))))))
-
-(defun find-prefix-package (prefix)
- (or
- (car (rassoc (string-downcase prefix) *package-prefix* :test #'string=))
- (find-package (string-upcase prefix))))
-
-(defmacro use-prefix (prefix &optional (package *package*))
- `(eval-when (:compile-toplevel :load-toplevel :execute)
- (set-package-prefix ,prefix ,package)))
-
-
-(defun default-alien-fname (lisp-name)
- (let* ((lisp-name-string
- (if (char= (char (the simple-string (string lisp-name)) 0) #\%)
- (subseq (the simple-string (string lisp-name)) 1)
- (string lisp-name)))
- (prefix (package-prefix *package*))
- (name (substitute #\_ #\- (string-downcase lisp-name-string))))
- (if (or (not prefix) (string= prefix ""))
- name
- (format nil "~A_~A" prefix name))))
-
-(defun default-alien-type-name (type-name)
- (let ((prefix (package-prefix *package*)))
- (apply
- #'concatenate
- 'string
- (mapcar
- #'string-capitalize
- (cons prefix (split-string (symbol-name type-name) #\-))))))
-
-(defun default-type-name (alien-name)
- (let ((parts
- (mapcar
- #'string-upcase
- (split-string-if alien-name #'upper-case-p))))
- (intern
- (concatenate-strings
- (rest parts) #\-) (find-prefix-package (first parts)))))
-
-
-(defmacro defbinding (name lambda-list return-type-spec &rest docs/args)
- (multiple-value-bind (lisp-name c-name)
- (if (atom name)
- (values name (default-alien-fname name))
- (values-list name))
-
- (let ((supplied-lambda-list lambda-list)
- (docs nil)
- (args nil))
- (dolist (doc/arg docs/args)
- (if (stringp doc/arg)
- (push doc/arg docs)
- (progn
- (destructuring-bind (expr type &optional (style :in)) doc/arg
- (unless (member style '(:in :out :in-out))
- (error "Bogus argument style ~S in ~S." style doc/arg))
- (when (and
- (not supplied-lambda-list)
- (namep expr) (member style '(:in :in-out)))
- (push expr lambda-list))
- (push
- (list (if (namep expr) expr (gensym)) expr type style) args)))))
-
- (%defbinding
- c-name lisp-name (or supplied-lambda-list (nreverse lambda-list))
- return-type-spec (reverse docs) (reverse args)))))
-
-#+cmu
-(defun %defbinding (foreign-name lisp-name lambda-list
- return-type-spec docs args)
- (ext:collect ((alien-types) (alien-bindings) (alien-parameters)
- (alien-values) (alien-deallocators))
- (dolist (arg args)
- (destructuring-bind (var expr type-spec style) arg
- (let ((declaration (translate-type-spec type-spec))
- (deallocation (cleanup-alien type-spec var t)))
- (cond
- ((member style '(:out :in-out))
- (alien-types `(* ,declaration))
- (alien-parameters `(addr ,var))
- (alien-bindings
- `(,var ,declaration
- ,@(when (eq style :in-out)
- (list (translate-to-alien type-spec expr t)))))
- (alien-values (translate-from-alien type-spec var nil)))
- (deallocation
- (alien-types declaration)
- (alien-bindings
- `(,var ,declaration ,(translate-to-alien type-spec expr t)))
- (alien-parameters var)
- (alien-deallocators deallocation))
- (t
- (alien-types declaration)
- (alien-parameters (translate-to-alien type-spec expr t)))))))
-
- (let ((alien-funcall `(alien-funcall ,lisp-name ,@(alien-parameters))))
- `(defun ,lisp-name ,lambda-list
- ,@docs
- (declare (optimize (ext:inhibit-warnings 3)))
- (with-alien ((,lisp-name
- (function
- ,(translate-type-spec return-type-spec)
- ,@(alien-types))
- :extern ,foreign-name)
- ,@(alien-bindings))
- ,(if return-type-spec
- `(let ((result
- ,(translate-from-alien return-type-spec alien-funcall nil)))
- ,@(alien-deallocators)
- (values result ,@(alien-values)))
- `(progn
- ,alien-funcall
- ,@(alien-deallocators)
- (values ,@(alien-values)))))))))
-
-
-(defun mkbinding (name return-type &rest arg-types)
- (declare (optimize (ext:inhibit-warnings 3)))
- (let* ((ftype
- `(function
- ,@(mapcar #'translate-type-spec (cons return-type arg-types))))
- (alien
- (alien::%heap-alien
- (alien::make-heap-alien-info
- :type (alien::parse-alien-type ftype)
- :sap-form (system:foreign-symbol-address name))))
- (translate-arguments
- (mapcar #'intern-argument-translator arg-types))
- (translate-return-value (intern-return-value-translator return-type))
- (cleanup-arguments (mapcar #'intern-cleanup-function arg-types)))
-
- #'(lambda (&rest args)
- (map-into args #'funcall translate-arguments args)
- (prog1
- (funcall
- translate-return-value (apply #'alien:alien-funcall alien args))
- (mapc #'funcall cleanup-arguments args)))))
-
-
-(defun type-translateable-p (type-spec)
- (find-applicable-type-method type-spec 'translate-type-spec nil))
-
-(defun every-type-translateable-p (type-specs)
- (every #'type-translateable-p type-specs))
-
-(defun mkbinding-late (name return-type &rest arg-types)
- (if (every-type-translateable-p (cons return-type arg-types))
- (apply #'mkbinding name return-type arg-types)
- (let ((binding nil))
- #'(lambda (&rest args)
- (cond
- (binding (apply binding args))
- ((every-type-translateable-p (cons return-type arg-types))
- (setq binding (apply #'mkbinding name return-type arg-types))
- (apply binding args))
- (t
- (dolist (type-spec (cons return-type arg-types))
- (unless (type-translateable-p type-spec)
- (error "Can't translate type ~A" type-spec)))))))))
-
-
-
-;;;; Definitons and translations of fundamental types
-
-(deftype long (&optional (min '*) (max '*)) `(integer ,min ,max))
-(deftype unsigned-long (&optional (min '*) (max '*)) `(integer ,min ,max))
-(deftype int (&optional (min '*) (max '*)) `(long ,min ,max))
-(deftype unsigned-int (&optional (min '*) (max '*)) `(unsigned-long ,min ,max))
-(deftype short (&optional (min '*) (max '*)) `(int ,min ,max))
-(deftype unsigned-short (&optional (min '*) (max '*)) `(unsigned-int ,min ,max))
-(deftype signed (&optional (size '*)) `(signed-byte ,size))
-(deftype unsigned (&optional (size '*)) `(signed-byte ,size))
-(deftype char () 'base-char)
-(deftype pointer () 'system-area-pointer)
-(deftype boolean (&optional (size '*))
- (declare (ignore size))
- `(member t nil))
-(deftype invalid () nil)
-
-(defun atomic-type-p (type-spec)
- (or
- (eq type-spec 'pointer)
- (not (eq (translate-type-spec type-spec) 'system-area-pointer))))
-
-
-(deftype-method cleanup-alien t (type-spec sap &optional weak-ref)
- (declare (ignore type-spec sap weak-ref))
- nil)
-
-
-(deftype-method translate-to-alien integer (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
-
-(deftype-method translate-from-alien integer (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
-
-
-(deftype-method translate-type-spec fixnum (type-spec)
- (declare (ignore type-spec))
- (translate-type-spec 'signed))
-
-(deftype-method size-of fixnum (type-spec)
- (declare (ignore type-spec))
- (size-of 'signed))
-
-(deftype-method translate-to-alien fixnum (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
-
-(deftype-method translate-from-alien fixnum (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
-
-
-(deftype-method translate-type-spec long (type-spec)
- (declare (ignore type-spec))
- `(signed ,(* +bits-per-unit+ +size-of-long+)))
-
-(deftype-method size-of long (type-spec)
- (declare (ignore type-spec))
- +size-of-long+)
-
-
-(deftype-method translate-type-spec unsigned-long (type-spec)
- (declare (ignore type-spec))
- `(unsigned ,(* +bits-per-unit+ +size-of-long+)))
-
-(deftype-method size-of unsigned-long (type-spec)
- (declare (ignore type-spec))
- +size-of-long+)
-
-
-(deftype-method translate-type-spec int (type-spec)
- (declare (ignore type-spec))
- `(signed ,(* +bits-per-unit+ +size-of-int+)))
-
-(deftype-method size-of int (type-spec)
- (declare (ignore type-spec))
- +size-of-int+)
-
-
-(deftype-method translate-type-spec unsigned-int (type-spec)
- (declare (ignore type-spec))
- `(unsigned ,(* +bits-per-unit+ +size-of-int+)))
-
-(deftype-method size-of unsigned-int (type-spec)
- (declare (ignore type-spec))
- +size-of-int+)
-
-
-(deftype-method translate-type-spec short (type-spec)
- (declare (ignore type-spec))
- `(signed ,(* +bits-per-unit+ +size-of-short+)))
-
-(deftype-method size-of short (type-spec)
- (declare (ignore type-spec))
- +size-of-short+)
-
-
-(deftype-method translate-type-spec unsigned-short (type-spec)
- (declare (ignore type-spec))
- `(unsigned ,(* +bits-per-unit+ +size-of-short+)))
-
-(deftype-method size-of unsigned-short (type-spec)
- (declare (ignore type-spec))
- +size-of-short+)
-
-
-(deftype-method translate-type-spec signed-byte (type-spec)
- (let ((size (second (mklist (type-expand-to 'signed-byte type-spec)))))
- `(signed
- ,(cond
- ((member size '(nil *)) (* +bits-per-unit+ +size-of-int+))
- (t size)))))
-
-(deftype-method size-of signed-byte (type-spec)
- (let ((size (second (mklist (type-expand-to 'signed-byte type-spec)))))
- (cond
- ((member size '(nil *)) +size-of-int+)
- (t (/ size +bits-per-unit+)))))
-
-(deftype-method translate-to-alien signed-byte (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
-
-(deftype-method translate-from-alien signed-byte
- (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
-
-
-(deftype-method translate-type-spec unsigned-byte (type-spec)
- (let ((size (second (mklist (type-expand-to 'unsigned-byte type-spec)))))
- `(signed
- ,(cond
- ((member size '(nil *)) (* +bits-per-unit+ +size-of-int+))
- (t size)))))
-
-(deftype-method size-of unsigned-byte (type-spec)
- (let ((size (second (mklist (type-expand-to 'unsigned-byte type-spec)))))
- (cond
- ((member size '(nil *)) +size-of-int+)
- (t (/ size +bits-per-unit+)))))
-
-(deftype-method translate-to-alien unsigned-byte (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
-
-(deftype-method translate-from-alien unsigned-byte
- (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
-
-
-(deftype-method translate-type-spec single-float (type-spec)
- (declare (ignore type-spec))
- 'single-float)
-
-(deftype-method size-of single-float (type-spec)
- (declare (ignore type-spec))
- +size-of-float+)
-
-(deftype-method translate-to-alien single-float (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
-
-(deftype-method translate-from-alien single-float
- (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
-
-
-(deftype-method translate-type-spec double-float (type-spec)
- (declare (ignore type-spec))
- 'double-float)
-
-(deftype-method size-of double-float (type-spec)
- (declare (ignore type-spec))
- +size-of-double+)
-
-(deftype-method translate-to-alien double-float (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
-
-(deftype-method translate-from-alien double-float
- (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
-
-
-(deftype-method translate-type-spec base-char (type-spec)
- (declare (ignore type-spec))
- `(unsigned ,+bits-per-unit+))
-
-(deftype-method size-of base-char (type-spec)
- (declare (ignore type-spec))
- 1)
-
-(deftype-method translate-to-alien base-char (type-spec char &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- `(char-code ,char))
-
-(deftype-method translate-from-alien base-char (type-spec code &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- `(code-char ,code))
-
-
-(deftype-method translate-type-spec string (type-spec)
- (declare (ignore type-spec))
- 'system-area-pointer)
-
-(deftype-method size-of string (type-spec)
- (declare (ignore type-spec))
- +size-of-sap+)
-
-(deftype-method translate-to-alien string (type-spec string &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- `(let ((string ,string))
- ;; Always copy strings to prevent seg fault due to GC
- (copy-memory
- (make-pointer (1+ (kernel:get-lisp-obj-address string)))
- (1+ (length string)))))
-
-(deftype-method translate-from-alien string
- (type-spec c-string &optional weak-ref)
- (declare (ignore type-spec))
- `(let ((c-string ,c-string))
- (unless (null-pointer-p c-string)
- (prog1
- (c-call::%naturalize-c-string c-string)
- ;,(unless weak-ref `(deallocate-memory c-string))
- ))))
-
-(deftype-method cleanup-alien string (type-spec c-string &optional weak-ref)
- (when weak-ref
- (unreference-alien type-spec c-string)))
-
-(deftype-method unreference-alien string (type-spec c-string)
- (declare (ignore type-spec))
- `(let ((c-string ,c-string))
- (unless (null-pointer-p c-string)
- (deallocate-memory c-string))))
-
-
-(deftype-method translate-type-spec boolean (type-spec)
- (translate-type-spec
- (cons 'unsigned (cdr (mklist (type-expand-to 'boolean type-spec))))))
-
-(deftype-method size-of boolean (type-spec)
- (size-of
- (cons 'unsigned (cdr (mklist (type-expand-to 'boolean type-spec))))))
-
-(deftype-method translate-to-alien boolean (type-spec boolean &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- `(if ,boolean 1 0))
-
-(deftype-method translate-from-alien boolean (type-spec int &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- `(not (zerop ,int)))
-
-
-(deftype-method translate-type-spec or (union-type)
- (let* ((member-types (cdr (type-expand-to 'or union-type)))
- (alien-type (translate-type-spec (first member-types))))
- (dolist (type (cdr member-types))
- (unless (eq alien-type (translate-type-spec type))
- (error "No common alien type specifier for union type: ~A" union-type)))
- alien-type))
-
-(deftype-method size-of or (union-type)
- (size-of (first (cdr (type-expand-to 'or union-type)))))
-
-(deftype-method translate-to-alien or (union-type-spec expr &optional weak-ref)
- (destructuring-bind (name &rest type-specs)
- (type-expand-to 'or union-type-spec)
- (declare (ignore name))
- `(let ((value ,expr))
- (etypecase value
- ,@(map
- 'list
- #'(lambda (type-spec)
- (list type-spec (translate-to-alien type-spec 'value weak-ref)))
- type-specs)))))
-
-
-(deftype-method translate-type-spec system-area-pointer (type-spec)
- (declare (ignore type-spec))
- 'system-area-pointer)
-
-(deftype-method size-of system-area-pointer (type-spec)
- (declare (ignore type-spec))
- +size-of-sap+)
-
-(deftype-method translate-to-alien system-area-pointer (type-spec sap &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- sap)
-
-(deftype-method translate-from-alien system-area-pointer
- (type-spec sap &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- sap)
-
-
-(deftype-method translate-type-spec null (type-spec)
- (declare (ignore type-spec))
- 'system-area-pointer)
-
-(deftype-method translate-to-alien null (type-spec expr &optional weak-ref)
- (declare (ignore type-spec expr weak-ref))
- `(make-pointer 0))
-
-
-(deftype-method translate-type-spec nil (type-spec)
- (declare (ignore type-spec))
- 'void)
-
-(deftype-method translate-from-alien nil (type-spec expr &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- `(progn
- ,expr
- (values)))
~mdw / clg / commitdiff