X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=src%2Fobjects.lisp;h=62f153ee4d659b37ff371c3a499c0fb4e9fef872;hb=b2a3a6e6f3e5adf857ba4e2c80b8e4f8a3124a33;hp=02928bd84200193e6fe4d6e8637cb5aa8c02d1a6;hpb=f7a5481c4ede7cf15256922861088e8601313ac8;p=uffi.git

diff --git a/src/objects.lisp b/src/objects.lisp
index 02928bd..62f153e 100644
--- a/src/objects.lisp
+++ b/src/objects.lisp
@@ -2,12 +2,12 @@
 ;;;; *************************************************************************
 ;;;; FILE IDENTIFICATION
 ;;;;
-;;;; Name:          objects.cl
+;;;; Name:          objects.lisp
 ;;;; Purpose:       UFFI source to handle objects and pointers
 ;;;; Programmer:    Kevin M. Rosenberg
 ;;;; Date Started:  Feb 2002
 ;;;;
-;;;; $Id: objects.lisp,v 1.11 2003/03/31 19:22:24 kevin Exp $
+;;;; $Id: objects.lisp,v 1.20 2003/08/23 01:05:53 kevin Exp $
 ;;;;
 ;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
 ;;;;
@@ -16,8 +16,7 @@
 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
 ;;;; *************************************************************************
 
-(declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
-(in-package :uffi)
+(in-package #:uffi)
 
 (defun size-of-foreign-type (type)
   #+lispworks (fli:size-of type)
@@ -119,7 +118,11 @@ an array of TYPE with size SIZE. The TYPE parameter is evaluated."
 #+mcl
 (defsetf deref-pointer deref-pointer-set)
 
-#+(or lispworks (and mcl (not openmcl))) ;; with LW, deref is a character
+#+lispworks
+(defmacro ensure-char-character (obj)
+  `(if (characterp ,obj) ,obj (code-char ,obj)))
+
+#+(and mcl (not openmcl)) 
 (defmacro ensure-char-character (obj)
   obj)
 
@@ -135,11 +138,6 @@ an array of TYPE with size SIZE. The TYPE parameter is evaluated."
 (defmacro ensure-char-integer (obj)
   obj)
 
-;; Returns the numeric value of a byte at a pointer
-;; Highly optimized
-(defmacro byte-value-at-pointer (ptr)
-  )
-
 (defmacro pointer-address (obj)
   #+(or cmu scl)
   `(system:sap-int (alien:alien-sap ,obj))
@@ -203,3 +201,56 @@ an array of TYPE with size SIZE. The TYPE parameter is evaluated."
   `(with-foreign-objects ((,var ,type)) 
      ,@body))
 
+#+lispworks
+(defmacro with-cast-pointer ((binding-name pointer type) &body body)
+  `(fli:with-coerced-pointer (,binding-name
+                          :type ',(convert-from-uffi-type (eval type) :type))
+      ,pointer
+    ,@body))
+
+#+(or cmu scl sbcl)
+(defmacro with-cast-pointer ((binding-name pointer type) &body body)
+  `(let ((,binding-name
+          (#+(or cmu scl) alien:cast
+           #+sbcl sb-alien:cast
+           ,pointer (* ,(convert-from-uffi-type (eval type) :type)))))
+    ,@body))
+
+#+allegro
+(defmacro with-cast-pointer ((binding-name pointer type) &body body)
+  (declare (ignore type))
+  `(let ((,binding-name ,pointer))
+    ,@body))
+
+#-(or lispworks cmu scl sbcl allegro)
+(defmacro with-cast-pointer ((binding-name pointer type) &body body)
+  (declare (ignore binding-name pointer type))
+  '(error "WITH-CAST-POINTER not (yet) implemented for ~A"
+          (lisp-implementation-type)))
+
+(defmacro def-foreign-var (names type module)
+  #-lispworks (declare (ignore module))
+  (let ((foreign-name (if (atom names) names (first names)))
+        (lisp-name (if (atom names) (make-lisp-name names) (second names)))
+        #-allegro
+        (var-type (convert-from-uffi-type type :type)))
+    #+(or cmu scl)
+    `(alien:def-alien-variable (,foreign-name ,lisp-name) ,var-type)
+    #+sbcl
+    `(sb-alien:define-alien-variable (,foreign-name ,lisp-name) ,var-type)
+    #+allegro
+    `(define-symbol-macro ,lisp-name
+      (ff:fslot-value-typed (quote ,(convert-from-uffi-type type :deref))
+                            :c (ff:get-entry-point ,foreign-name)))
+    #+lispworks
+    `(progn
+      (fli:define-foreign-variable (,lisp-name ,foreign-name)
+                                    :accessor :address-of
+                                    :type ,var-type
+                                    :module ,module)
+      (define-symbol-macro ,lisp-name (fli:dereference (,lisp-name)
+                                                        :copy-foreign-object nil)))
+    #-(or allegro cmu scl sbcl lispworks)
+    `(define-symbol-macro ,lisp-name
+      '(error "DEF-FOREIGN-VAR not (yet) defined for ~A"
+        (lisp-implementation-type)))))