-;; Common Lisp bindings for GTK+ v2.0
-;; Copyright (C) 1999-2001 Espen S. Johnsen <esj@stud.cs.uit.no>
+;; Common Lisp bindings for GTK+ v2.x
+;; Copyright 1999-2005 Espen S. Johnsen <espen@users.sf.net>
;;
-;; 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.
+;; Permission is hereby granted, free of charge, to any person obtaining
+;; a copy of this software and associated documentation files (the
+;; "Software"), to deal in the Software without restriction, including
+;; without limitation the rights to use, copy, modify, merge, publish,
+;; distribute, sublicense, and/or sell copies of the Software, and to
+;; permit persons to whom the Software is furnished to do so, subject to
+;; the following conditions:
;;
-;; 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.
+;; The above copyright notice and this permission notice shall be
+;; included in all copies or substantial portions of the Software.
;;
-;; 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
+;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+;; IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+;; CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-;; $Id: ffi.lisp,v 1.1 2004-10-27 14:46:01 espen Exp $
+;; $Id: ffi.lisp,v 1.27 2006-02-26 15:50:32 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
(defun set-package-prefix (prefix &optional (package *package*))
(let ((package (find-package package)))
- (delete-if #'(lambda (assoc) (eq (car assoc) package)) *package-prefix*)
+ (setq *package-prefix* (delete package *package-prefix* :key #'car))
(push (cons package prefix) *package-prefix*))
prefix)
(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))))
+ (let* ((name (substitute #\_ #\- (string-downcase lisp-name)))
+ (stripped-name
+ (cond
+ ((and
+ (char= (char name 0) #\%)
+ (string= "_p" name :start2 (- (length name) 2)))
+ (subseq name 1 (- (length name) 2)))
+ ((char= (char name 0) #\%)
+ (subseq name 1))
+ ((string= "_p" name :start2 (- (length name) 2))
+ (subseq name 0 (- (length name) 2)))
+ (name)))
+ (prefix (package-prefix *package*)))
(if (or (not prefix) (string= prefix ""))
- name
- (format nil "~A_~A" prefix name))))
+ stripped-name
+ (format nil "~A_~A" prefix stripped-name))))
(defun default-alien-type-name (type-name)
(let ((prefix (package-prefix *package*)))
(rest parts) #\-) (find-prefix-package (first parts)))))
-(defmacro defbinding (name lambda-list return-type-spec &rest docs/args)
+(defmacro defbinding (name lambda-list return-type &rest docs/args)
(multiple-value-bind (lisp-name c-name)
(if (atom name)
(values name (default-alien-fname name))
(push doc/arg docs)
(progn
(destructuring-bind (expr type &optional (style :in)) doc/arg
- (unless (member style '(:in :out :in-out))
+ (unless (member style '(:in :out :in-out :return))
(error "Bogus argument style ~S in ~S." style doc/arg))
(when (and
(not supplied-lambda-list)
- (namep expr) (member style '(:in :in-out)))
+ (namep expr) (member style '(:in :in-out :return)))
(push expr lambda-list))
- (push
- (list (if (namep expr) (make-symbol (string expr)) (gensym)) expr type style) args)))))
+ (push (list (cond
+ ((and (namep expr) (eq style :out)) expr)
+ ((namep expr) (make-symbol (string 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)))))
+ return-type (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))
+#+(or cmu sbcl)
+(defun %defbinding (foreign-name lisp-name lambda-list return-type docs args)
+ (collect ((alien-types) (alien-bindings) (alien-parameters)
+ (return-values) (cleanup-forms))
(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)))
+ (destructuring-bind (var expr type style) arg
+ (let ((declaration (alien-type type))
+ (cleanup (cleanup-form type var)))
+
(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)))))))
+ ((member style '(:out :in-out))
+ (alien-types `(* ,declaration))
+ (alien-parameters `(addr ,var))
+ (alien-bindings
+ `(,var ,declaration
+ ,@(cond
+ ((eq style :in-out) (list (to-alien-form type expr)))
+ ((eq declaration 'system-area-pointer)
+ (list '(make-pointer 0))))))
+ (return-values (from-alien-form type var)))
+ ((eq style :return)
+ (alien-types declaration)
+ (alien-bindings
+ `(,var ,declaration ,(to-alien-form type expr)))
+ (alien-parameters var)
+ (return-values (from-alien-form type var)))
+ (cleanup
+ (alien-types declaration)
+ (alien-bindings
+ `(,var ,declaration ,(to-alien-form type expr)))
+ (alien-parameters var)
+ (cleanup-forms cleanup))
+ (t
+ (alien-types declaration)
+ (alien-parameters (to-alien-form type expr)))))))
(let* ((alien-name (make-symbol (string lisp-name)))
(alien-funcall `(alien-funcall ,alien-name ,@(alien-parameters))))
`(defun ,lisp-name ,lambda-list
,@docs
- (declare (optimize (ext:inhibit-warnings 3)))
+ #+cmu(declare (optimize (inhibit-warnings 3)))
+ #+sbcl(declare (muffle-conditions compiler-note))
(with-alien ((,alien-name
(function
- ,(translate-type-spec return-type-spec)
+ ,(alien-type return-type)
,@(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)))
+ ,(if return-type
+ `(values
+ (unwind-protect
+ ,(from-alien-form return-type alien-funcall)
+ ,@(cleanup-forms))
+ ,@(return-values))
`(progn
- ,alien-funcall
- ,@(alien-deallocators)
- (values ,@(alien-values)))))))))
+ (unwind-protect
+ ,alien-funcall
+ ,@(cleanup-forms))
+ (values ,@(return-values)))))))))
+;;; Creates bindings at runtime
(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))))
+ #+cmu(declare (optimize (inhibit-warnings 3)))
+ #+sbcl(declare (muffle-conditions compiler-note))
+ (let* ((ftype
+ `(function ,@(mapcar #'alien-type (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 :flavor :code))))
- (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)))
-
+ (%heap-alien
+ (make-heap-alien-info
+ :type (parse-alien-type ftype #+sbcl nil)
+ :sap-form (let ((address (foreign-symbol-address name)))
+ (etypecase address
+ (integer (int-sap address))
+ (system-area-pointer address))))))
+ (translate-arguments (mapcar #'to-alien-function arg-types))
+ (translate-return-value (from-alien-function return-type))
+ (cleanup-arguments (mapcar #'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))
+ (funcall translate-return-value
+ (apply #'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)))))))))
+;;;; C callbacks
+
+(defmacro define-callback (name return-type args &body body)
+ (let ((define-callback
+ #+cmu'alien:def-callback
+ #+(and sbcl alien-callbacks)'sb-alien::define-alien-callback
+ #+(and sbcl (not alien-callbacks))'sb-alien:define-alien-function))
+ (multiple-value-bind (doc declaration body)
+ (cond
+ ((and (stringp (first body)) (eq (cadr body) 'declare))
+ (values (first body) (second body) (cddr body)))
+ ((stringp (first body))
+ (values (first body) nil (rest body)))
+ ((eq (caar body) 'declare)
+ (values nil (first body) (rest body)))
+ (t (values nil nil body)))
+ `(progn
+ #+cmu(defparameter ,name nil)
+ (,define-callback ,name
+ #+(and sbcl alien-callbacks),(alien-type return-type)
+ (#+(or cmu (and sbcl (not alien-callbacks))),(alien-type return-type)
+ ,@(mapcar #'(lambda (arg)
+ (destructuring-bind (name type) arg
+ `(,name ,(alien-type type))))
+ args))
+ ,@(when doc (list doc))
+ ,(to-alien-form return-type
+ `(let (,@(loop
+ for (name type) in args
+ as from-alien-form = (callback-from-alien-form type name)
+ collect `(,name ,from-alien-form)))
+ ,@(when declaration (list declaration))
+ (unwind-protect
+ (progn ,@body)
+ ,@(loop
+ for (name type) in args
+ do (callback-cleanup-form type name))))))))))
+
+(defun callback-address (callback)
+ #+cmu(alien::callback-trampoline callback)
+ #+(and sbcl (not alien-callbacks))(sb-alien:alien-function-sap callback)
+ #+(and sbcl alien-callbacks)(sb-alien:alien-sap callback))
+
+#+sbcl
+(deftype callback ()
+ #-alien-callbacks'sb-alien:alien-function
+ #+alien-callbacks'sb-alien:alien)
+
+
+;;; These are for backward compatibility
+
+(defmacro defcallback (name (return-type &rest args) &body body)
+ `(define-callback ,name ,return-type ,args ,@body))
+
+#-cmu
+(defun callback (callback)
+ (callback-address callback))
+
+
+
+;;;; The "type method" system
+
+(defun find-applicable-type-method (name type-spec &optional (error-p t))
+ (let ((type-methods (get name 'type-methods)))
+ (labels ((search-method-in-cpl-order (classes)
+ (when classes
+ (or
+ (gethash (class-name (first classes)) type-methods)
+ (search-method-in-cpl-order (rest classes)))))
+ (lookup-method (type-spec)
+ (if (and (symbolp type-spec) (find-class type-spec nil))
+ (search-method-in-cpl-order
+ (class-precedence-list (find-class type-spec)))
+ (or
+ (let ((specifier (etypecase type-spec
+ (symbol type-spec)
+ (list (first type-spec)))))
+ (gethash specifier type-methods))
+ (multiple-value-bind (expanded-type expanded-p)
+ (type-expand-1 type-spec)
+ (when expanded-p
+ (lookup-method expanded-type))))))
+ (search-built-in-type-hierarchy (sub-tree)
+ (when (subtypep type-spec (first sub-tree))
+ (or
+ (search-nodes (cddr sub-tree))
+ (second sub-tree))))
+ (search-nodes (nodes)
+ (loop
+ for node in nodes
+ as function = (search-built-in-type-hierarchy node)
+ until function
+ finally (return function))))
+ (or
+ (lookup-method type-spec)
+ ;; This is to handle unexpandable types whichs doesn't name a class
+ (unless (and (symbolp type-spec) (find-class type-spec nil))
+ (search-nodes (get name 'built-in-type-hierarchy)))
+ (and
+ error-p
+ (error "No applicable type method for ~A when call width type specifier ~A" name type-spec))))))
+
+
+(defun insert-type-in-hierarchy (specifier function nodes)
+ (cond
+ ((let ((node (find specifier nodes :key #'first)))
+ (when node
+ (setf (second node) function)
+ nodes)))
+ ((let ((node
+ (find-if
+ #'(lambda (node)
+ (subtypep specifier (first node)))
+ nodes)))
+ (when node
+ (setf (cddr node)
+ (insert-type-in-hierarchy specifier function (cddr node)))
+ nodes)))
+ ((let ((sub-nodes (remove-if-not
+ #'(lambda (node)
+ (subtypep (first node) specifier))
+ nodes)))
+ (cons
+ (list* specifier function sub-nodes)
+ (nset-difference nodes sub-nodes))))))
+
+
+(defun add-type-method (name specifier function)
+ (setf (gethash specifier (get name 'type-methods)) function)
+ (when (typep (find-class specifier nil) 'built-in-class)
+ (setf (get name 'built-in-type-hierarchy)
+ (insert-type-in-hierarchy specifier function
+ (get name 'built-in-type-hierarchy)))))
+
+
+;; TODO: handle optional, key and rest arguments
+(defmacro define-type-generic (name lambda-list &optional documentation)
+ (if (or
+ (not lambda-list)
+ (find (first lambda-list) '(&optional &key &rest &allow-other-keys)))
+ (error "A type generic needs at least one required argument")
+ `(progn
+ (setf (get ',name 'type-methods) (make-hash-table))
+ (setf (get ',name 'built-in-type-hierarchy) ())
+ (defun ,name ,lambda-list
+ ,documentation
+ (funcall
+ (find-applicable-type-method ',name ,(first lambda-list))
+ ,@lambda-list)))))
+
+
+(defmacro define-type-method (name lambda-list &body body)
+ (let ((specifier (cadar lambda-list))
+ (args (cons (caar lambda-list) (rest lambda-list))))
+ `(progn
+ (add-type-method ',name ',specifier #'(lambda ,args ,@body))
+ ',name)))
+
+
+
+;;;; Definitons and translations of fundamental types
+
+(define-type-generic alien-type (type-spec))
+(define-type-generic size-of (type-spec))
+(define-type-generic to-alien-form (type-spec form))
+(define-type-generic from-alien-form (type-spec form))
+(define-type-generic cleanup-form (type-spec form)
+ "Creates a form to clean up after the alien call has finished.")
+(define-type-generic callback-from-alien-form (type-spec form))
+(define-type-generic callback-cleanup-form (type-spec form))
+
+(define-type-generic to-alien-function (type-spec))
+(define-type-generic from-alien-function (type-spec))
+(define-type-generic cleanup-function (type-spec))
+
+(define-type-generic copy-to-alien-form (type-spec form))
+(define-type-generic copy-to-alien-function (type-spec))
+(define-type-generic copy-from-alien-form (type-spec form))
+(define-type-generic copy-from-alien-function (type-spec))
+(define-type-generic writer-function (type-spec))
+(define-type-generic reader-function (type-spec))
+(define-type-generic destroy-function (type-spec))
+
+(define-type-generic unbound-value (type-spec)
+ "Returns a value which should be intepreted as unbound for slots with virtual allocation")
+
+
+;; Sizes of fundamental C types in bytes (8 bits)
+(defconstant +size-of-short+ 2)
+(defconstant +size-of-int+ 4)
+(defconstant +size-of-long+ 4)
+(defconstant +size-of-pointer+ 4)
+(defconstant +size-of-float+ 4)
+(defconstant +size-of-double+ 8)
-
+;; Sizes of fundamental C types in bits
+(defconstant +bits-of-byte+ 8)
+(defconstant +bits-of-short+ 16)
+(defconstant +bits-of-int+ 32)
+(defconstant +bits-of-long+ 32)
-;;;; 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 int () '(signed-byte #.+bits-of-int+))
+(deftype unsigned-int () '(unsigned-byte #.+bits-of-int+))
+(deftype long () '(signed-byte #.+bits-of-long+))
+(deftype unsigned-long () '(unsigned-byte #.+bits-of-long+))
+(deftype short () '(signed-byte #.+bits-of-short+))
+(deftype unsigned-short () '(unsigned-byte #.+bits-of-short+))
(deftype signed (&optional (size '*)) `(signed-byte ,size))
-(deftype unsigned (&optional (size '*)) `(signed-byte ,size))
+(deftype unsigned (&optional (size '*)) `(unsigned-byte ,size))
(deftype char () 'base-char)
(deftype pointer () 'system-area-pointer)
-(deftype boolean (&optional (size '*))
- (declare (ignore size))
- `(member t nil))
-(deftype invalid () nil)
+(deftype boolean (&optional (size '*)) (declare (ignore size)) t)
+(deftype copy-of (type) type)
-(defun atomic-type-p (type-spec)
- (or
- (eq type-spec 'pointer)
- (not (eq (translate-type-spec type-spec) 'system-area-pointer))))
+(define-type-method alien-type ((type t))
+ (error "No alien type corresponding to the type specifier ~A" type))
+(define-type-method to-alien-form ((type t) form)
+ (declare (ignore form))
+ (error "Not a valid type specifier for arguments: ~A" type))
-(deftype-method cleanup-alien t (type-spec sap &optional weak-ref)
- (declare (ignore type-spec sap weak-ref))
- nil)
+(define-type-method to-alien-function ((type t))
+ (error "Not a valid type specifier for arguments: ~A" type))
+(define-type-method from-alien-form ((type t) form)
+ (declare (ignore form))
+ (error "Not a valid type specifier for return values: ~A" type))
-(deftype-method translate-to-alien integer (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
+(define-type-method from-alien-function ((type t))
+ (error "Not a valid type specifier for return values: ~A" type))
+
+(define-type-method cleanup-form ((type t) form)
+ (declare (ignore form type))
+ nil)
-(deftype-method translate-from-alien integer (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
+(define-type-method cleanup-function ((type t))
+ (declare (ignore type))
+ #'identity)
+(define-type-method callback-from-alien-form ((type t) form)
+ (copy-from-alien-form type form))
-(deftype-method translate-type-spec fixnum (type-spec)
- (declare (ignore type-spec))
- (translate-type-spec 'signed))
+(define-type-method callback-cleanup-form ((type t) form)
+ (declare (ignore form type))
+ nil)
-(deftype-method size-of fixnum (type-spec)
- (declare (ignore type-spec))
- (size-of 'signed))
+(define-type-method destroy-function ((type t))
+ (declare (ignore type))
+ #'(lambda (location &optional offset)
+ (declare (ignore location offset))))
-(deftype-method translate-to-alien fixnum (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
+(define-type-method copy-to-alien-form ((type t) form)
+ (to-alien-form type form))
-(deftype-method translate-from-alien fixnum (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
+(define-type-method copy-to-alien-function ((type t))
+ (to-alien-function type))
+(define-type-method copy-from-alien-form ((type t) form)
+ (from-alien-form type form))
-(deftype-method translate-type-spec long (type-spec)
- (declare (ignore type-spec))
- `(signed ,(* +bits-per-unit+ +size-of-long+)))
+(define-type-method copy-from-alien-function ((type t))
+ (from-alien-function type))
-(deftype-method size-of long (type-spec)
- (declare (ignore type-spec))
- +size-of-long+)
+(define-type-method to-alien-form ((type real) form)
+ (declare (ignore type))
+ form)
-(deftype-method translate-type-spec unsigned-long (type-spec)
- (declare (ignore type-spec))
- `(unsigned ,(* +bits-per-unit+ +size-of-long+)))
+(define-type-method to-alien-function ((type real))
+ (declare (ignore type))
+ #'identity)
-(deftype-method size-of unsigned-long (type-spec)
- (declare (ignore type-spec))
- +size-of-long+)
+(define-type-method from-alien-form ((type real) form)
+ (declare (ignore type))
+ form)
+(define-type-method from-alien-function ((type real))
+ (declare (ignore type))
+ #'identity)
-(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+)
+(define-type-method alien-type ((type integer))
+ (declare (ignore type))
+ (alien-type 'signed-byte))
+(define-type-method size-of ((type integer))
+ (declare (ignore type))
+ (size-of 'signed-byte))
-(deftype-method translate-type-spec unsigned-int (type-spec)
- (declare (ignore type-spec))
- `(unsigned ,(* +bits-per-unit+ +size-of-int+)))
+(define-type-method writer-function ((type integer))
+ (declare (ignore type))
+ (writer-function 'signed-byte))
-(deftype-method size-of unsigned-int (type-spec)
- (declare (ignore type-spec))
- +size-of-int+)
+(define-type-method reader-function ((type integer))
+ (declare (ignore type))
+ (reader-function 'signed-byte))
+
+(define-type-method alien-type ((type signed-byte))
+ (destructuring-bind (&optional (size '*))
+ (rest (mklist (type-expand-to 'signed-byte type)))
+ (ecase size
+ (#.+bits-of-byte+ #+cmu'(alien:signed 8) #+sbcl'(sb-alien:signed 8))
+ (#.+bits-of-short+ #+cmu 'c-call:short #+sbcl 'sb-alien:short)
+ ((* #.+bits-of-int+) #+cmu 'c-call:int #+sbcl 'sb-alien:int)
+ (#.+bits-of-long+ #+cmu 'c-call:long #+sbcl 'sb-alien:long))))
+
+(define-type-method size-of ((type signed-byte))
+ (destructuring-bind (&optional (size '*))
+ (rest (mklist (type-expand-to 'signed-byte type)))
+ (ecase size
+ (#.+bits-of-byte+ 1)
+ (#.+bits-of-short+ +size-of-short+)
+ ((* #.+bits-of-int+) +size-of-int+)
+ (#.+bits-of-long+ +size-of-long+))))
+
+(define-type-method writer-function ((type signed-byte))
+ (destructuring-bind (&optional (size '*))
+ (rest (mklist (type-expand-to 'signed-byte type)))
+ (let ((size (if (eq size '*) +bits-of-int+ size)))
+ (ecase size
+ (8 #'(lambda (value location &optional (offset 0))
+ (setf (signed-sap-ref-8 location offset) value)))
+ (16 #'(lambda (value location &optional (offset 0))
+ (setf (signed-sap-ref-16 location offset) value)))
+ (32 #'(lambda (value location &optional (offset 0))
+ (setf (signed-sap-ref-32 location offset) value)))
+ (64 #'(lambda (value location &optional (offset 0))
+ (setf (signed-sap-ref-64 location offset) value)))))))
+
+(define-type-method reader-function ((type signed-byte))
+ (destructuring-bind (&optional (size '*))
+ (rest (mklist (type-expand-to 'signed-byte type)))
+ (let ((size (if (eq size '*) +bits-of-int+ size)))
+ (ecase size
+ (8 #'(lambda (sap &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (signed-sap-ref-8 sap offset)))
+ (16 #'(lambda (sap &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (signed-sap-ref-16 sap offset)))
+ (32 #'(lambda (sap &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (signed-sap-ref-32 sap offset)))
+ (64 #'(lambda (sap &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (signed-sap-ref-64 sap offset)))))))
+
+
+(define-type-method alien-type ((type unsigned-byte))
+ (destructuring-bind (&optional (size '*))
+ (rest (mklist (type-expand-to 'unsigned-byte type)))
+ (ecase size
+ (#.+bits-of-byte+ #+cmu'(alien:unsigned 8) #+sbcl'(sb-alien:unsigned 8))
+ (#.+bits-of-short+ #+cmu 'c-call:unsigned-short
+ #+sbcl 'sb-alien:unsigned-short)
+ ((* #.+bits-of-int+) #+cmu 'c-call:unsigned-int
+ #+sbcl 'sb-alien:unsigned-int)
+ (#.+bits-of-long+ #+cmu 'c-call:unsigned-long
+ #+sbcl 'sb-alien:unsigned-long))))
+
+
+(define-type-method size-of ((type unsigned-byte))
+ (destructuring-bind (&optional (size '*))
+ (rest (mklist (type-expand-to 'unsigned-byte type)))
+ (size-of `(signed ,size))))
+
+(define-type-method writer-function ((type unsigned-byte))
+ (destructuring-bind (&optional (size '*))
+ (rest (mklist (type-expand-to 'unsigned-byte type)))
+ (let ((size (if (eq size '*) +bits-of-int+ size)))
+ (ecase size
+ (8 #'(lambda (value location &optional (offset 0))
+ (setf (sap-ref-8 location offset) value)))
+ (16 #'(lambda (value location &optional (offset 0))
+ (setf (sap-ref-16 location offset) value)))
+ (32 #'(lambda (value location &optional (offset 0))
+ (setf (sap-ref-32 location offset) value)))
+ (64 #'(lambda (value location &optional (offset 0))
+ (setf (sap-ref-64 location offset) value)))))))
+
+(define-type-method reader-function ((type unsigned-byte))
+ (destructuring-bind (&optional (size '*))
+ (rest (mklist (type-expand-to 'unsigned-byte type)))
+ (let ((size (if (eq size '*) +bits-of-int+ size)))
+ (ecase size
+ (8 #'(lambda (sap &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (sap-ref-8 sap offset)))
+ (16 #'(lambda (sap &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (sap-ref-16 sap offset)))
+ (32 #'(lambda (sap &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (sap-ref-32 sap offset)))
+ (64 #'(lambda (sap &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (sap-ref-64 sap offset)))))))
+
+(define-type-method alien-type ((type single-float))
+ (declare (ignore type))
+ #+cmu 'alien:single-float #+sbcl 'sb-alien:single-float)
+
+(define-type-method size-of ((type single-float))
+ (declare (ignore type))
+ +size-of-float+)
-(deftype-method translate-type-spec short (type-spec)
- (declare (ignore type-spec))
- `(signed ,(* +bits-per-unit+ +size-of-short+)))
+(define-type-method to-alien-form ((type single-float) form)
+ (declare (ignore type))
+ `(coerce ,form 'single-float))
-(deftype-method size-of short (type-spec)
- (declare (ignore type-spec))
- +size-of-short+)
+(define-type-method to-alien-function ((type single-float))
+ (declare (ignore type))
+ #'(lambda (number)
+ (coerce number 'single-float)))
+(define-type-method writer-function ((type single-float))
+ (declare (ignore type))
+ #'(lambda (value location &optional (offset 0))
+ (setf (sap-ref-single location offset) (coerce value 'single-float))))
-(deftype-method translate-type-spec unsigned-short (type-spec)
- (declare (ignore type-spec))
- `(unsigned ,(* +bits-per-unit+ +size-of-short+)))
+(define-type-method reader-function ((type single-float))
+ (declare (ignore type))
+ #'(lambda (sap &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (sap-ref-single sap offset)))
-(deftype-method size-of unsigned-short (type-spec)
- (declare (ignore type-spec))
- +size-of-short+)
+(define-type-method alien-type ((type double-float))
+ (declare (ignore type))
+ #+cmu 'alien:double-float #+sbcl 'sb-alien:double-float)
-(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)))))
+(define-type-method size-of ((type double-float))
+ (declare (ignore type))
+ +size-of-double+)
-(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+)))))
+(define-type-method to-alien-form ((type double-float) form)
+ (declare (ignore type))
+ `(coerce ,form 'double-float))
-(deftype-method translate-to-alien signed-byte (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
+(define-type-method to-alien-function ((type double-float))
+ (declare (ignore type))
+ #'(lambda (number)
+ (coerce number 'double-float)))
-(deftype-method translate-from-alien signed-byte
- (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
+(define-type-method writer-function ((type double-float))
+ (declare (ignore type))
+ #'(lambda (value location &optional (offset 0))
+ (setf (sap-ref-double location offset) (coerce value 'double-float))))
+(define-type-method reader-function ((type double-float))
+ (declare (ignore type))
+ #'(lambda (sap &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (sap-ref-double sap offset)))
-(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+)))))
+(define-type-method alien-type ((type base-char))
+ (declare (ignore type))
+ #+cmu 'c-call:char #+sbcl 'sb-alien:char)
-(deftype-method translate-to-alien unsigned-byte (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
+(define-type-method size-of ((type base-char))
+ (declare (ignore type))
+ 1)
-(deftype-method translate-from-alien unsigned-byte
- (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
+(define-type-method to-alien-form ((type base-char) form)
+ (declare (ignore type))
+ form)
+(define-type-method to-alien-function ((type base-char))
+ (declare (ignore type))
+ #'identity)
-(deftype-method translate-type-spec single-float (type-spec)
- (declare (ignore type-spec))
- 'single-float)
+(define-type-method from-alien-form ((type base-char) form)
+ (declare (ignore type))
+ form)
-(deftype-method size-of single-float (type-spec)
- (declare (ignore type-spec))
- +size-of-float+)
+(define-type-method from-alien-function ((type base-char))
+ (declare (ignore type))
+ #'identity)
-(deftype-method translate-to-alien single-float (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
+(define-type-method writer-function ((type base-char))
+ (declare (ignore type))
+ #'(lambda (char location &optional (offset 0))
+ (setf (sap-ref-8 location offset) (char-code char))))
-(deftype-method translate-from-alien single-float
- (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
+(define-type-method reader-function ((type base-char))
+ (declare (ignore type))
+ #'(lambda (location &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (code-char (sap-ref-8 location offset))))
-(deftype-method translate-type-spec double-float (type-spec)
- (declare (ignore type-spec))
- 'double-float)
+(define-type-method alien-type ((type string))
+ (declare (ignore type))
+ (alien-type 'pointer))
-(deftype-method size-of double-float (type-spec)
- (declare (ignore type-spec))
- +size-of-double+)
+(define-type-method size-of ((type string))
+ (declare (ignore type))
+ (size-of 'pointer))
-(deftype-method translate-to-alien double-float (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- `(coerce ,number 'double-float))
+(define-type-method to-alien-form ((type string) string)
+ (declare (ignore type))
+ `(let ((string ,string))
+ ;; Always copy strings to prevent seg fault due to GC
+ #+cmu
+ (copy-memory
+ (vector-sap (coerce string 'simple-base-string))
+ (1+ (length string)))
+ #+sbcl
+ (let ((utf8 (%deport-utf8-string string)))
+ (copy-memory (vector-sap utf8) (length utf8)))))
+
+(define-type-method to-alien-function ((type string))
+ (declare (ignore type))
+ #'(lambda (string)
+ #+cmu
+ (copy-memory
+ (vector-sap (coerce string 'simple-base-string))
+ (1+ (length string)))
+ #+sbcl
+ (let ((utf8 (%deport-utf8-string string)))
+ (copy-memory (vector-sap utf8) (length utf8)))))
+
+(define-type-method from-alien-form ((type string) string)
+ (declare (ignore type))
+ `(let ((string ,string))
+ (unless (null-pointer-p string)
+ (prog1
+ #+cmu(%naturalize-c-string string)
+ #+sbcl(%naturalize-utf8-string string)
+ (deallocate-memory string)))))
+
+(define-type-method from-alien-function ((type string))
+ (declare (ignore type))
+ #'(lambda (string)
+ (unless (null-pointer-p string)
+ (prog1
+ #+cmu(%naturalize-c-string string)
+ #+sbcl(%naturalize-utf8-string string)
+ (deallocate-memory string)))))
-(deftype-method translate-from-alien double-float
- (type-spec number &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- number)
+(define-type-method cleanup-form ((type string) string)
+ (declare (ignore type))
+ `(let ((string ,string))
+ (unless (null-pointer-p string)
+ (deallocate-memory string))))
+(define-type-method cleanup-function ((type string))
+ (declare (ignore type))
+ #'(lambda (string)
+ (unless (null-pointer-p string)
+ (deallocate-memory string))))
-(deftype-method translate-type-spec base-char (type-spec)
- (declare (ignore type-spec))
- `(unsigned ,+bits-per-unit+))
+(define-type-method copy-from-alien-form ((type string) string)
+ (declare (ignore type))
+ `(let ((string ,string))
+ (unless (null-pointer-p string)
+ #+cmu(%naturalize-c-string string)
+ #+sbcl(%naturalize-utf8-string string))))
+
+(define-type-method copy-from-alien-function ((type string))
+ (declare (ignore type))
+ #'(lambda (string)
+ (unless (null-pointer-p string)
+ #+cmu(%naturalize-c-string string)
+ #+sbcl(%naturalize-utf8-string string))))
+
+(define-type-method writer-function ((type string))
+ (declare (ignore type))
+ #'(lambda (string location &optional (offset 0))
+ (assert (null-pointer-p (sap-ref-sap location offset)))
+ (setf (sap-ref-sap location offset)
+ #+cmu
+ (copy-memory
+ (vector-sap (coerce string 'simple-base-string))
+ (1+ (length string)))
+ #+sbcl
+ (let ((utf8 (%deport-utf8-string string)))
+ (copy-memory (vector-sap utf8) (length utf8))))))
+
+(define-type-method reader-function ((type string))
+ (declare (ignore type))
+ #'(lambda (location &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (unless (null-pointer-p (sap-ref-sap location offset))
+ #+cmu(%naturalize-c-string (sap-ref-sap location offset))
+ #+sbcl(%naturalize-utf8-string (sap-ref-sap location offset)))))
+
+(define-type-method destroy-function ((type string))
+ (declare (ignore type))
+ #'(lambda (location &optional (offset 0))
+ (unless (null-pointer-p (sap-ref-sap location offset))
+ (deallocate-memory (sap-ref-sap location offset))
+ (setf (sap-ref-sap location offset) (make-pointer 0)))))
+
+(define-type-method unbound-value ((type string))
+ (declare (ignore type))
+ nil)
-(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))
+(define-type-method alien-type ((type pathname))
+ (declare (ignore type))
+ (alien-type 'string))
-(deftype-method translate-from-alien base-char (type-spec code &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- `(code-char ,code))
+(define-type-method size-of ((type pathname))
+ (declare (ignore type))
+ (size-of 'string))
+(define-type-method to-alien-form ((type pathname) path)
+ (declare (ignore type))
+ (to-alien-form 'string `(namestring (translate-logical-pathname ,path))))
+
+(define-type-method to-alien-function ((type pathname))
+ (declare (ignore type))
+ (let ((string-function (to-alien-function 'string)))
+ #'(lambda (path)
+ (funcall string-function (namestring path)))))
+
+(define-type-method from-alien-form ((type pathname) string)
+ (declare (ignore type))
+ `(parse-namestring ,(from-alien-form 'string string)))
+
+(define-type-method from-alien-function ((type pathname))
+ (declare (ignore type))
+ (let ((string-function (from-alien-function 'string)))
+ #'(lambda (string)
+ (parse-namestring (funcall string-function string)))))
+
+(define-type-method cleanup-form ((type pathnanme) string)
+ (declare (ignore type))
+ (cleanup-form 'string string))
+
+(define-type-method cleanup-function ((type pathnanme))
+ (declare (ignore type))
+ (cleanup-function 'string))
+
+(define-type-method writer-function ((type pathname))
+ (declare (ignore type))
+ (let ((string-writer (writer-function 'string)))
+ #'(lambda (path location &optional (offset 0))
+ (funcall string-writer (namestring path) location offset))))
+
+(define-type-method reader-function ((type pathname))
+ (declare (ignore type))
+ (let ((string-reader (reader-function 'string)))
+ #'(lambda (location &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (let ((string (funcall string-reader location offset)))
+ (when string
+ (parse-namestring string))))))
+
+(define-type-method destroy-function ((type pathname))
+ (declare (ignore type))
+ (destroy-function 'string))
+
+(define-type-method unbound-value ((type pathname))
+ (declare (ignore type))
+ (unbound-value 'string))
+
+
+(define-type-method alien-type ((type boolean))
+ (destructuring-bind (&optional (size '*))
+ (rest (mklist (type-expand-to 'boolean type)))
+ (alien-type `(signed-byte ,size))))
+
+(define-type-method size-of ((type boolean))
+ (destructuring-bind (&optional (size '*))
+ (rest (mklist (type-expand-to 'boolean type)))
+ (size-of `(signed-byte ,size))))
+
+(define-type-method to-alien-form ((type boolean) boolean)
+ (declare (ignore type))
+ `(if ,boolean 1 0))
-(deftype-method translate-type-spec string (type-spec)
- (declare (ignore type-spec))
- 'system-area-pointer)
+(define-type-method to-alien-function ((type boolean))
+ (declare (ignore type))
+ #'(lambda (boolean)
+ (if boolean 1 0)))
+
+(define-type-method from-alien-form ((type boolean) boolean)
+ (declare (ignore type))
+ `(not (zerop ,boolean)))
+
+(define-type-method from-alien-function ((type boolean))
+ (declare (ignore type))
+ #'(lambda (boolean)
+ (not (zerop boolean))))
+
+(define-type-method writer-function ((type boolean))
+ (destructuring-bind (&optional (size '*))
+ (rest (mklist (type-expand-to 'boolean type)))
+ (let ((writer (writer-function `(signed-byte ,size))))
+ #'(lambda (boolean location &optional (offset 0))
+ (funcall writer (if boolean 1 0) location offset)))))
+
+(define-type-method reader-function ((type boolean))
+ (destructuring-bind (&optional (size '*))
+ (rest (mklist (type-expand-to 'boolean type)))
+ (let ((reader (reader-function `(signed-byte ,size))))
+ #'(lambda (location &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (not (zerop (funcall reader location offset)))))))
+
+
+(define-type-method alien-type ((type or))
+ (let* ((expanded-type (type-expand-to 'or type))
+ (alien-type (alien-type (second expanded-type))))
+ (unless (every #'(lambda (type)
+ (eq alien-type (alien-type type)))
+ (cddr expanded-type))
+ (error "No common alien type specifier for union type: ~A" type))
+ alien-type))
-(deftype-method size-of string (type-spec)
- (declare (ignore type-spec))
- +size-of-sap+)
+(define-type-method size-of ((type or))
+ (size-of (second (type-expand-to 'or type))))
+
+(define-type-method to-alien-form ((type or) form)
+ `(let ((value ,form))
+ (etypecase value
+ ,@(mapcar
+ #'(lambda (type)
+ `(,type ,(to-alien-form type 'value)))
+ (rest (type-expand-to 'or type))))))
+
+(define-type-method to-alien-function ((type or))
+ (let* ((expanded-type (type-expand-to 'or type))
+ (functions (mapcar #'to-alien-function (rest expanded-type))))
+ #'(lambda (value)
+ (loop
+ for function in functions
+ for alt-type in (rest expanded-type)
+ when (typep value alt-type)
+ do (return (funcall function value))
+ finally (error "~S is not of type ~A" value type)))))
+
+
+(define-type-method alien-type ((type pointer))
+ (declare (ignore type))
+ 'system-area-pointer)
-(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))))
-
-
-;;; Pathname
-
-(deftype-method translate-type-spec pathname (type-spec)
- (declare (ignore type-spec))
- (translate-type-spec 'string))
-
-(deftype-method size-of pathname (type-spec)
- (declare (ignore type-spec))
- (size-of 'string))
+(define-type-method size-of ((type pointer))
+ (declare (ignore type))
+ +size-of-pointer+)
-(deftype-method translate-to-alien pathname (type-spec path &optional weak-ref)
- (declare (ignore type-spec))
- (translate-to-alien 'string
- `(namestring (translate-logical-pathname ,path)) weak-ref))
+(define-type-method to-alien-form ((type pointer) form)
+ (declare (ignore type))
+ form)
-(deftype-method translate-from-alien pathname (type-spec c-string &optional weak-ref)
- (declare (ignore type-spec))
- `(parse-namestring ,(translate-from-alien 'string c-string weak-ref)))
+(define-type-method to-alien-function ((type pointer))
+ (declare (ignore type))
+ #'identity)
-(deftype-method cleanup-alien pathname (type-spec c-string &optional weak-ref)
- (declare (ignore type-spec))
- (cleanup-alien 'string c-string weak-ref))
+(define-type-method from-alien-form ((type pointer) form)
+ (declare (ignore type))
+ form)
-(deftype-method unreference-alien pathname (type-spec c-string)
- (declare (ignore type-spec))
- (unreference-alien 'string c-string))
-
+(define-type-method from-alien-function ((type pointer))
+ (declare (ignore type))
+ #'identity)
-(deftype-method translate-type-spec boolean (type-spec)
- (translate-type-spec
- (cons 'unsigned (cdr (mklist (type-expand-to 'boolean type-spec))))))
+(define-type-method writer-function ((type pointer))
+ (declare (ignore type))
+ #'(lambda (sap location &optional (offset 0))
+ (setf (sap-ref-sap location offset) sap)))
-(deftype-method size-of boolean (type-spec)
- (size-of
- (cons 'unsigned (cdr (mklist (type-expand-to 'boolean type-spec))))))
+(define-type-method reader-function ((type pointer))
+ (declare (ignore type))
+ #'(lambda (location &optional (offset 0) weak-p)
+ (declare (ignore weak-p))
+ (sap-ref-sap location offset)))
-(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)))
+(define-type-method alien-type ((type null))
+ (declare (ignore type))
+ (alien-type 'pointer))
+(define-type-method size-of ((type null))
+ (declare (ignore type))
+ (size-of 'pointer))
-(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))
+(define-type-method to-alien-form ((type null) null)
+ (declare (ignore null type))
+ `(make-pointer 0))
-(deftype-method size-of or (union-type)
- (size-of (first (cdr (type-expand-to 'or union-type)))))
+(define-type-method to-alien-function ((type null))
+ (declare (ignore type))
+ #'(lambda (null)
+ (declare (ignore null))
+ (make-pointer 0)))
-(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)))))
+(define-type-method alien-type ((type nil))
+ (declare (ignore type))
+ 'void)
-(deftype-method translate-type-spec system-area-pointer (type-spec)
- (declare (ignore type-spec))
- 'system-area-pointer)
+(define-type-method from-alien-function ((type nil))
+ (declare (ignore type))
+ #'(lambda (value)
+ (declare (ignore value))
+ (values)))
-(deftype-method size-of system-area-pointer (type-spec)
- (declare (ignore type-spec))
- +size-of-sap+)
+(define-type-method to-alien-form ((type nil) form)
+ (declare (ignore type))
+ form)
-(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)
+(define-type-method to-alien-form ((type copy-of) form)
+ (copy-to-alien-form (second (type-expand-to 'copy-of type)) form))
+(define-type-method to-alien-function ((type copy-of))
+ (copy-to-alien-function (second (type-expand-to 'copy-of type))))
-(deftype-method translate-type-spec null (type-spec)
- (declare (ignore type-spec))
- 'system-area-pointer)
+(define-type-method from-alien-form ((type copy-of) form)
+ (copy-from-alien-form (second (type-expand-to 'copy-of type)) form))
-(deftype-method translate-to-alien null (type-spec expr &optional weak-ref)
- (declare (ignore type-spec expr weak-ref))
- `(make-pointer 0))
+(define-type-method from-alien-function ((type copy-of))
+ (copy-from-alien-function (second (type-expand-to 'copy-of type))))
-(deftype-method translate-type-spec nil (type-spec)
- (declare (ignore type-spec))
- 'void)
+(define-type-method alien-type ((type callback))
+ (declare (ignore type))
+ (alien-type 'pointer))
-(deftype-method translate-from-alien nil (type-spec expr &optional weak-ref)
- (declare (ignore type-spec weak-ref))
- `(progn
- ,expr
- (values)))
+(define-type-method to-alien-form ((type callback) callback)
+ (declare (ignore type ))
+ `(callback-address ,callback))
~mdw / clg / blobdiff