--- /dev/null
+;; Common Lisp bindings for GTK+ v2.x
+;; Copyright 2000-2006 Espen S. Johnsen <espen@users.sf.net>
+;;
+;; 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:
+;;
+;; The above copyright notice and this permission notice shall be
+;; included in all copies or substantial portions of the Software.
+;;
+;; 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: enums.lisp,v 1.1 2006-04-25 20:37:49 espen Exp $
+
+(in-package "GFFI")
+
+;;;; Generic enum type
+
+(defun %map-enum (mappings op)
+ (delete-duplicates
+ (loop
+ as value = 0 then (1+ value)
+ for mapping in mappings
+ collect (let ((symbol (if (atom mapping) mapping (first mapping))))
+ (unless (atom mapping)
+ (setq value (second mapping)))
+ (ecase op
+ (:symbol-int `(,symbol ,value))
+ (:int-symbol `(,value ,symbol))
+ (:int-quoted-symbol `(,value ',symbol)))))
+ :key #'first :from-end t))
+
+(defun %map-symbols (mappings)
+ (mapcar #'(lambda (mapping)
+ (first (mklist mapping)))
+ mappings))
+
+(deftype enum (&rest args)
+ `(member ,@(%map-symbols args)))
+
+(define-type-method alien-type ((type enum))
+ (declare (ignore type))
+ (alien-type 'signed))
+
+(define-type-method size-of ((type enum) &key (inlined t))
+ (assert-inlined type inlined)
+ (size-of 'signed))
+
+(define-type-method to-alien-form ((type enum) form &optional copy-p)
+ (declare (ignore copy-p))
+ `(case ,form
+ ,@(%map-enum (rest (type-expand-to 'enum type)) :symbol-int)
+ (t (error 'type-error :datum ,form :expected-type ',type))))
+
+(define-type-method from-alien-form ((type enum) form &key ref)
+ (declare (ignore ref))
+ `(case ,form
+ ,@(%map-enum (rest (type-expand-to 'enum type)) :int-quoted-symbol)))
+
+(define-type-method to-alien-function ((type enum) &optional copy-p)
+ (declare (ignore copy-p))
+ (let ((mappings (%map-enum (rest (type-expand-to 'enum type)) :symbol-int)))
+ #'(lambda (enum)
+ (or
+ (second (assoc enum mappings))
+ (error 'type-error :datum enum :expected-type type)))))
+
+(define-type-method from-alien-function ((type enum) &key ref)
+ (declare (ignore ref))
+ (let ((mappings (%map-enum (rest (type-expand-to 'enum type)) :int-symbol)))
+ #'(lambda (int)
+ (second (assoc int mappings)))))
+
+(define-type-method writer-function ((type enum) &key temp (inlined t))
+ (declare (ignore temp))
+ (assert-inlined type inlined)
+ (let ((writer (writer-function 'signed))
+ (function (to-alien-function (type-expand-to 'enum type))))
+ #'(lambda (enum location &optional (offset 0))
+ (funcall writer (funcall function enum) location offset))))
+
+(define-type-method reader-function ((type enum) &key ref (inlined t))
+ (declare (ignore ref))
+ (assert-inlined type inlined)
+ (let ((reader (reader-function 'signed))
+ (function (from-alien-function (type-expand-to 'enum type))))
+ #'(lambda (location &optional (offset 0))
+ (funcall function (funcall reader location offset)))))
+
+(defun enum-int (enum type)
+ (funcall (to-alien-function type) enum))
+
+(defun int-enum (int type)
+ (funcall (from-alien-function type) int))
+
+(defun enum-mapping (type)
+ (rest (type-expand-to 'enum type)))
+
+
+;;;; Named enum types
+
+(defmacro define-enum-type (name &rest args)
+ (let ((enum-int (intern (format nil "~A-TO-INT" name)))
+ (int-enum (intern (format nil "INT-TO-~A" name))))
+ `(progn
+ (deftype ,name () '(enum ,@args))
+ (defun ,enum-int (enum)
+ (case enum
+ ,@(%map-enum args :symbol-int)
+ (t (error 'type-error :datum enum :expected-type ',name))))
+ (defun ,int-enum (value)
+ (case value
+ ,@(%map-enum args :int-quoted-symbol)))
+ (eval-when (:compile-toplevel :load-toplevel :execute)
+ (define-type-method to-alien-form ((type ,name) form &optional copy-p)
+ (declare (ignore type copy-p))
+ (list ',enum-int form))
+ (define-type-method from-alien-form ((type ,name) form &key ref)
+ (declare (ignore type ref))
+ (list ',int-enum form))
+ (define-type-method to-alien-function ((type ,name) &optional copy-p)
+ (declare (ignore type copy-p))
+ #',enum-int)
+ (define-type-method from-alien-function ((type ,name) &key ref)
+ (declare (ignore type ref))
+ #',int-enum)
+ (define-type-method writer-function ((type ,name) &key temp (inlined t))
+ (declare (ignore temp))
+ (assert-inlined type inlined)
+ (let ((writer (writer-function 'signed)))
+ #'(lambda (enum location &optional (offset 0))
+ (funcall writer (,enum-int enum) location offset))))
+ (define-type-method reader-function ((type ,name) &key ref (inlined t))
+ (declare (ignore ref))
+ (assert-inlined type inlined)
+ (let ((reader (reader-function 'signed)))
+ #'(lambda (location &optional (offset 0))
+ (,int-enum (funcall reader location offset)))))))))
+
+
+;;;; Generic flags type
+
+(defun %map-flags (mappings op)
+ (delete-duplicates
+ (loop
+ as value = 1 then (ash value 1)
+ for mapping in mappings
+ collect (let ((symbol (if (atom mapping) mapping (first mapping))))
+ (unless (atom mapping)
+ (setq value (second mapping)))
+ (case op
+ (:symbol-int `(,symbol ,value))
+ (:int-symbol `(,value ,symbol)))))
+ :key #'first :from-end t))
+
+(deftype flags (&rest args)
+ `(or (member ,@(%map-symbols args)) list))
+
+(define-type-method alien-type ((type flags))
+ (declare (ignore type))
+ (alien-type 'unsigned))
+
+(define-type-method size-of ((type flags) &key (inlined t))
+ (assert-inlined type inlined)
+ (size-of 'unsigned))
+
+(define-type-method to-alien-form ((type flags) flags &optional copy-p)
+ (declare (ignore copy-p))
+ `(reduce #'logior (mklist ,flags)
+ :key #'(lambda (flag)
+ (case flag
+ ,@(%map-flags (rest (type-expand-to 'flags type)) :symbol-int)
+ (t (error 'type-error :datum ,flags :expected-type ',type))))))
+
+(define-type-method from-alien-form ((type flags) value &key ref)
+ (declare (ignore ref))
+ `(loop
+ for (int symbol) in ',(%map-flags (rest (type-expand-to 'flags type)) :int-symbol)
+ when (= (logand ,value int) int)
+ collect symbol))
+
+(define-type-method to-alien-function ((type flags) &optional copy-p)
+ (declare (ignore copy-p))
+ (let ((mappings (%map-flags (rest (type-expand-to 'flags type)) :symbol-int)))
+ #'(lambda (flags)
+ (reduce #'logior (mklist flags)
+ :key #'(lambda (flag)
+ (or
+ (second (assoc flag mappings))
+ (error 'type-error :datum flags :expected-type type)))))))
+
+(define-type-method from-alien-function ((type flags) &key ref)
+ (declare (ignore ref))
+ (let ((mappings (%map-flags (rest (type-expand-to 'flags type)) :int-symbol)))
+ #'(lambda (value)
+ (loop
+ for (int symbol) in mappings
+ when (= (logand value int) int)
+ collect symbol))))
+
+(define-type-method writer-function ((type flags) &key temp (inlined t))
+ (declare (ignore temp))
+ (assert-inlined type inlined)
+ (let ((writer (writer-function 'unsigned))
+ (function (to-alien-function (type-expand-to 'flags type))))
+ #'(lambda (flags location &optional (offset 0))
+ (funcall writer (funcall function flags) location offset))))
+
+(define-type-method reader-function ((type flags) &key ref (inlined t))
+ (declare (ignore ref))
+ (assert-inlined type inlined)
+ (let ((reader (reader-function 'unsigned))
+ (function (from-alien-function (type-expand-to 'flags type))))
+ #'(lambda (location &optional (offset 0))
+ (funcall function (funcall reader location offset)))))
+
+
+;;;; Named flags types
+
+(defmacro define-flags-type (name &rest args)
+ (let ((flags-int (intern (format nil "~A-TO-INT" name)))
+ (int-flags (intern (format nil "INT-TO-~A" name)))
+ (satisfies (intern (format nil "~A-P" name))))
+ `(progn
+ (deftype ,name () '(satisfies ,satisfies))
+ (defun ,satisfies (object)
+ (flet ((valid-p (ob)
+ (find ob ',(%map-symbols args))))
+ (typecase object
+ (symbol (valid-p object))
+ (list (every #'valid-p object)))))
+ (defun ,flags-int (flags)
+ (reduce #'logior (mklist flags)
+ :key #'(lambda (flag)
+ (case flag
+ ,@(%map-flags args :symbol-int)
+ (t (error 'type-error :datum flags :expected-type ',name))))))
+ (defun ,int-flags (value)
+ (loop
+ for (int symbol) in ',(%map-flags args :int-symbol)
+ when(= (logand value int) int)
+ collect symbol))
+ (eval-when (:compile-toplevel :load-toplevel :execute)
+ (define-type-method alien-type ((type ,name))
+ (declare (ignore type))
+ (alien-type 'flags))
+ (define-type-method size-of ((type ,name) &key (inlined t))
+ (assert-inlined type inlined)
+ (size-of 'flags))
+ (define-type-method to-alien-form ((type ,name) form &optional copy-p)
+ (declare (ignore type copy-p))
+ (list ',flags-int form))
+ (define-type-method from-alien-form ((type ,name) form &key ref)
+ (declare (ignore type ref))
+ (list ',int-flags form))
+ (define-type-method to-alien-function ((type ,name) &optional copy-p)
+ (declare (ignore type copy-p))
+ #',flags-int)
+ (define-type-method from-alien-function ((type ,name) &key ref)
+ (declare (ignore type ref))
+ #',int-flags)
+ (define-type-method writer-function ((type ,name) &key temp (inlined t))
+ (declare (ignore temp))
+ (assert-inlined type inlined)
+ (let ((writer (writer-function 'signed)))
+ #'(lambda (flags location &optional (offset 0))
+ (funcall writer (,flags-int flags) location offset))))
+ (define-type-method reader-function ((type ,name) &key ref (inlined t))
+ (declare (ignore ref))
+ (assert-inlined type inlined)
+ (let ((reader (reader-function 'signed)))
+ #'(lambda (location &optional (offset 0))
+ (,int-flags (funcall reader location offset)))))))))
+
+
+(defexport define-enum-type (name &rest args)
+ (declare (ignore args))
+ name)
+
+(defexport define-flags-type (name &rest args)
+ (declare (ignore args))
+ name)
~mdw / clg / commitdiff