;; Common Lisp bindings for GTK+ v2.0
-;; Copyright (C) 2000 Espen S. Johnsen <esj@stud.cs.uit.no>
+;; Copyright (C) 2000-2001 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 along with this library; if not, write to the Free Software
;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-;; $Id: gtype.lisp,v 1.9 2001-04-30 11:25:25 espen Exp $
+;; $Id: gtype.lisp,v 1.19 2004-11-07 01:21:04 espen Exp $
(in-package "GLIB")
(use-prefix "g")
-
-;;;;
+;; Initialize the glib type system
+(defbinding type-init () nil)
+(type-init)
(deftype type-number () '(unsigned 32))
(eval-when (:compile-toplevel :load-toplevel :execute)
- (defclass type-query (alien-structure)
+ (defclass type-query (struct)
((type-number :allocation :alien :type type-number)
(name :allocation :alien :type string)
(class-size :allocation :alien :type unsigned-int)
(instance-size :allocation :alien :type unsigned-int))
- (:metaclass proxy-class)))
-
-
-(defbinding ("g_type_name" alien-type-name) (type) (static string)
- ((find-type-number type) type-number))
-
-(defbinding %type-from-name () type-number
- (name string))
+ (:metaclass struct-class)))
-(defbinding type-parent () type-number
- (type type-number))
(defbinding %type-query () nil
(type type-number)
(defun type-query (type)
(let ((query (make-instance 'type-query)))
- (%type-query (find-type-number type) query)
+ (%type-query (find-type-number type t) query)
query))
(defun type-instance-size (type)
(defun type-class-size (type)
(slot-value (type-query type) 'class-size))
-(defbinding type-class-ref () pointer
- (type type-number))
+(defbinding type-class-ref (type) pointer
+ ((find-type-number type t) type-number))
-(defbinding type-class-unref () nil
- (type type-number))
+(defbinding type-class-unref (type) nil
+ ((find-type-number type t) type-number))
-(defbinding type-class-peek () pointer
- (type type-number))
+(defbinding type-class-peek (type) pointer
+ ((find-type-number type t) type-number))
-(defbinding type-create-instance (type) pointer
- ((find-type-number type) type-number))
-
-(defbinding type-free-instance () nil
- (instance pointer))
+;;;; Mapping between lisp types and glib types
(defvar *type-to-number-hash* (make-hash-table))
(defvar *number-to-type-hash* (make-hash-table))
-(defun type-number-from-alien-name (name &optional (error t))
- (if (string= name "invalid")
- 0
- (let ((type-number (%type-from-name name)))
- (cond
- ((and (zerop type-number) error)
- (error "Invalid alien type name: ~A" name))
- ((zerop type-number) nil)
- (t type-number)))))
-
-(defun (setf alien-type-name) (alien-name type)
- (let ((type-name (ensure-type-name type))
- (type-number (type-number-from-alien-name alien-name)))
- (setf (gethash type-number *number-to-type-hash*) type-name)
- (setf (gethash type-name *type-to-number-hash*) type-number)))
-
-(defun (setf find-type-number) (type-number type)
- (setf (gethash (ensure-type-name type) *type-to-number-hash*) type-number))
-
-(defun find-type-number (type)
+(defun register-type (type id)
+ (let ((type-number
+ (etypecase id
+ (integer id)
+ (string (find-type-number id t))
+ (symbol (gethash id *type-to-number-hash*)))))
+ (setf (gethash type *type-to-number-hash*) type-number)
+ (unless (symbolp id)
+ (setf (gethash type-number *number-to-type-hash*) type))
+ type-number))
+
+(defbinding %type-from-name () type-number
+ (name string))
+
+(defun find-type-number (type &optional error)
(etypecase type
(integer type)
- (symbol (gethash type *type-to-number-hash*))
- (pcl::class (gethash (class-name type) *type-to-number-hash*))))
+ (string
+ (let ((type-number (%type-from-name type)))
+ (cond
+ ((and (zerop type-number) error)
+ (error "Invalid gtype name: ~A" type))
+ ((zerop type-number) nil)
+ (t type-number))))
+ (symbol
+ (let ((type-number (gethash type *type-to-number-hash*)))
+ (or
+ type-number
+ (and error (error "Type not registered: ~A" type)))))
+ (pcl::class (find-type-number (class-name type) error))))
-(defun type-from-number (type-number)
- (gethash type-number *number-to-type-hash*))
+(defun type-from-number (type-number &optional error)
+ (multiple-value-bind (type found)
+ (gethash type-number *number-to-type-hash*)
+ (when (and error (not found))
+ (let ((name (find-type-name type-number)))
+ (if name
+ (error "Type number not registered: ~A (~A)" type-number name)
+ (error "Invalid type number: ~A" type-number))))
+ type))
+
+(defun type-from-name (name)
+ (etypecase name
+ (string (type-from-number (find-type-number name t)))))
+
+(defbinding (find-type-name "g_type_name") (type) string
+ ((find-type-number type t) type-number))
(defun type-number-of (object)
- (find-type-number (type-of object)))
+ (find-type-number (type-of object) t))
+
+(defun init-type (init)
+ (mapc
+ #'(lambda (fname)
+ (funcall (mkbinding fname 'type-number)))
+ (mklist init)))
+
+(defun %init-types-in-library (pathname prefix ignore)
+ (let ((process (ext:run-program
+ "nm" (list "-D" (namestring (truename pathname)))
+ :output :stream :wait nil))
+ (fnames ()))
+ (labels ((read-symbols ()
+ (let ((line (read-line (ext:process-output process) nil)))
+ (when line
+ (let ((symbol (subseq line 11)))
+ (when (and
+ (> (length symbol) (length prefix))
+ (string= prefix symbol :end2 (length prefix))
+ (search "_get_type" symbol)
+ (not (member symbol ignore :test #'string=)))
+ (push symbol fnames)))
+ (read-symbols)))))
+ (read-symbols)
+ (ext:process-close process)
+ `(init-type ',fnames))))
+
+(defmacro init-types-in-library (filename &key (prefix "") ignore)
+ (%init-types-in-library filename prefix ignore))
-(defun type-init (name &optional init-fname)
- (funcall
- (mkbinding
- (or init-fname (default-alien-fname (format nil "~A_get_type" name)))
- 'type-number)))
;;;; Superclass for wrapping types in the glib type system
(eval-when (:compile-toplevel :load-toplevel :execute)
(defclass ginstance (proxy)
- ()
- (:metaclass proxy-class)
- (:size 4 #|(size-of 'pointer|#)))
-
-(defmethod initialize-proxy ((instance ginstance) &rest initargs &key location)
- (declare (ignore initargs))
- (setf
- (slot-value instance 'location)
- (funcall (ginstance-class-ref (class-of instance)) location))
- (call-next-method))
-
-(defmethod instance-finalizer ((instance ginstance))
- (let ((location (proxy-location instance))
- (unref (ginstance-class-unref (class-of instance))))
- (declare (type system-area-pointer location))
- #'(lambda ()
- (funcall unref location)
- (remove-cached-instance location))))
+ ((class :allocation :alien :type pointer))
+ (:metaclass proxy-class)))
(defun %type-of-ginstance (location)
(let ((class (sap-ref-sap location 0)))
- (type-from-number (sap-ref-unsigned class 0))))
-
-(deftype-method translate-from-alien
- ginstance (type-spec location &optional weak-ref)
- (declare (ignore type-spec))
- `(let ((location ,location))
- (unless (null-pointer-p location)
- (ensure-proxy-instance
- (%type-of-ginstance location) location ,weak-ref))))
-
-(deftype-method translate-to-alien
- ginstance (type-spec object &optional weak-ref)
- (declare (ignore type-spec))
- (if weak-ref
- `(proxy-location ,object)
- `(let ((object ,object))
- (funcall
- (ginstance-class-ref (class-of object)) (proxy-location object)))))
-
-(deftype-method unreference-alien ginstance (type-spec location)
- (declare (ignore type-spec))
- `(let* ((location ,location)
- (class (find-class (%type-of-ginstance location))))
- (funcall (ginstance-class-unref class) location)))
+ (type-from-number (sap-ref-32 class 0))))
+(defmethod ensure-proxy-instance ((class ginstance-class) location)
+ (declare (ignore class))
+ (let ((class (find-class (%type-of-ginstance location))))
+ (if class
+ (make-instance class :location (reference-foreign class location))
+ ;; TODO: (make-instance 'ginstance ...)
+ location)))
;;;; Metaclass for subclasses of ginstance
(eval-when (:compile-toplevel :load-toplevel :execute)
(defclass ginstance-class (proxy-class)
- ((ref :reader ginstance-class-ref)
- (unref :reader ginstance-class-unref))))
+ ()))
(defmethod shared-initialize ((class ginstance-class) names
- &rest initargs
- &key name alien-name size
- ref unref type-init)
- (declare (ignore initargs names))
- (call-next-method)
-
+ &rest initargs &key name alien-name)
+ (declare (ignore names))
(let* ((class-name (or name (class-name class)))
(type-number
+ (find-type-number
+ (or (first alien-name) (default-alien-type-name class-name)) t)))
+ (register-type class-name type-number)
+ (if (getf initargs :size)
+ (call-next-method)
+ (let ((size (type-instance-size type-number)))
+ (apply #'call-next-method class names :size (list size) initargs)))))
+
+
+(defmethod validate-superclass ((class ginstance-class) (super standard-class))
+ (subtypep (class-name super) 'ginstance))
+
+
+;;;; Registering fundamental types
+
+(register-type 'pointer "gpointer")
+(register-type 'char "gchar")
+(register-type 'unsigned-char "guchar")
+(register-type 'boolean "gboolean")
+(register-type 'fixnum "gint")
+(register-type 'int "gint")
+(register-type 'unsigned-int "guint")
+(register-type 'long "glong")
+(register-type 'unsigned-long "gulong")
+(register-type 'single-float "gfloat")
+(register-type 'double-float "gdouble")
+(register-type 'string "gchararray")
+
+
+;;;;
+
+(defvar *derivable-type-info* (make-hash-table))
+
+(defun register-derivable-type (type id expander)
+ (register-type type id)
+ (let ((type-number (register-type type id)))
+ (setf (gethash type-number *derivable-type-info*) expander)))
+
+(defun find-type-info (type)
+ (dolist (super (cdr (type-hierarchy type)))
+ (let ((info (gethash super *derivable-type-info*)))
+ (return-if info))))
+
+(defun expand-type-definition (type options)
+ (let ((expander (find-type-info type)))
+ (funcall expander (find-type-number type t) options)))
+
+(defbinding type-parent (type) type-number
+ ((find-type-number type t) type-number))
+
+(defun supertype (type)
+ (type-from-number (type-parent type)))
+
+(defbinding %type-interfaces (type) pointer
+ ((find-type-number type t) type-number)
+ (n-interfaces unsigned-int :out))
+
+(defun type-interfaces (type)
+ (multiple-value-bind (array length) (%type-interfaces type)
+ (unwind-protect
+ (map-c-vector 'list #'identity array 'type-number length)
+ (deallocate-memory array))))
+
+(defun implements (type)
+ (mapcar #'type-from-number (type-interfaces type)))
+
+(defun type-hierarchy (type)
+ (let ((type-number (find-type-number type t)))
+ (unless (= type-number 0)
+ (cons type-number (type-hierarchy (type-parent type-number))))))
+
+(defbinding (type-is-p "g_type_is_a") (type super) boolean
+ ((find-type-number type) type-number)
+ ((find-type-number super) type-number))
+
+(defbinding %type-children () pointer
+ (type-number type-number)
+ (num-children unsigned-int :out))
+
+(defun map-subtypes (function type &optional prefix)
+ (let ((type-number (find-type-number type t)))
+ (multiple-value-bind (array length) (%type-children type-number)
+ (unwind-protect
+ (map-c-vector
+ 'nil
+ #'(lambda (type-number)
+ (when (or
+ (not prefix)
+ (string-prefix-p prefix (find-type-name type-number)))
+ (funcall function type-number))
+ (map-subtypes function type-number prefix))
+ array 'type-number length)
+ (deallocate-memory array)))))
+
+(defun find-types (prefix)
+ (let ((type-list nil))
+ (maphash
+ #'(lambda (type-number expander)
+ (declare (ignore expander))
+ (map-subtypes
+ #'(lambda (type-number)
+ (pushnew type-number type-list))
+ type-number prefix))
+ *derivable-type-info*)
+ type-list))
+
+(defun %sort-types-topologicaly (unsorted)
+ (let ((sorted ()))
+ (loop while unsorted do
+ (dolist (type unsorted)
+ (let ((dependencies
+ (append (rest (type-hierarchy type)) (type-interfaces type))))
(cond
- ((and alien-name type-init)
- (error
- "Specify either :type-init or :alien-name for class ~A"
- class-name))
- (alien-name (type-number-from-alien-name (first alien-name)))
- (type-init (type-init class-name (first type-init)))
+ ((null dependencies)
+ (push type sorted)
+ (setq unsorted (delete type unsorted)))
(t
- (or
- (type-number-from-alien-name
- (default-alien-type-name class-name) nil)
- (type-init class-name))))))
- (setf (find-type-number class) type-number)
- (unless size
- (setf
- (slot-value class 'size)
- (type-instance-size (find-type-number class-name))))
- (when ref
- (setf
- (slot-value class 'ref)
- (mkbinding (first ref) 'pointer 'pointer)))
- (when unref
- (setf
- (slot-value class 'unref)
- (mkbinding (first unref) 'nil 'pointer)))))
-
-(defmethod shared-initialize :after ((class ginstance-class) names
- &rest initargs)
- (declare (ignore names initargs))
- (unless (slot-boundp class 'ref)
- (setf
- (slot-value class 'ref)
- (ginstance-class-ref (most-specific-proxy-superclass class))))
- (unless (slot-boundp class 'unref)
- (setf
- (slot-value class 'unref)
- (ginstance-class-unref (most-specific-proxy-superclass class)))))
-
-
-(defmethod validate-superclass
- ((class ginstance-class) (super pcl::standard-class))
- (subtypep (class-name super) 'ginstance))
+ (unless (dolist (dep dependencies)
+ (when (find type (rest (type-hierarchy dep)))
+ (error "Cyclic type dependencie"))
+ (return-if (find dep unsorted)))
+ (push type sorted)
+ (setq unsorted (delete type unsorted))))))))
+ (nreverse sorted)))
+
+
+(defun expand-type-definitions (prefix &optional args)
+ (flet ((type-options (type-number)
+ (let ((name (find-type-name type-number)))
+ (cdr (assoc name args :test #'string=)))))
+
+ (let ((type-list
+ (delete-if
+ #'(lambda (type-number)
+ (let ((name (find-type-name type-number)))
+ (or
+ (getf (type-options type-number) :ignore)
+ (find-if
+ #'(lambda (options)
+ (and
+ (string-prefix-p (first options) name)
+ (getf (cdr options) :ignore-prefix)
+ (not (some
+ #'(lambda (exception)
+ (string= name exception))
+ (getf (cdr options) :except)))))
+ args))))
+ (find-types prefix))))
+
+ (dolist (type-number type-list)
+ (let ((name (find-type-name type-number)))
+ (register-type
+ (getf (type-options type-number) :type (default-type-name name))
+ type-number)))
+
+ `(progn
+ ,@(mapcar
+ #'(lambda (type)
+ (expand-type-definition type (type-options type)))
+ (%sort-types-topologicaly type-list))))))
+
+(defmacro define-types-by-introspection (prefix &rest args)
+ (expand-type-definitions prefix args))
+
-;;;; Initializing type numbers
-
-(setf (alien-type-name 'invalid) "invalid")
-(setf (alien-type-name 'char) "gchar")
-(setf (alien-type-name 'unsigned-char) "guchar")
-(setf (alien-type-name 'boolean) "gboolean")
-(setf (alien-type-name 'int) "gint")
-(setf (alien-type-name 'unsigned-int) "guint")
-(setf (alien-type-name 'long) "glong")
-(setf (alien-type-name 'unsigned-long) "gulong")
-(setf (alien-type-name 'single-float) "gfloat")
-(setf (alien-type-name 'double-float) "gdouble")
-(setf (alien-type-name 'string) "GString")
-(setf (find-type-number 'fixnum) (find-type-number 'int))
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