1 ;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; Package: UFFI -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
5 ;;;; Name: aggregates.cl
6 ;;;; Purpose: UFFI source to handle aggregate types
7 ;;;; Programmers: Kevin M. Rosenberg and John DeSoi
8 ;;;; Date Started: Feb 2002
10 ;;;; $Id: aggregates.cl,v 1.2 2002/09/20 04:51:14 kevin Exp $
12 ;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
15 ;;;; UFFI users are granted the rights to distribute and use this software
16 ;;;; as governed by the terms of the Lisp Lesser GNU Public License
17 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
18 ;;;; *************************************************************************
20 (declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
25 (defmacro def-enum (enum-name args &key (separator-string "#"))
26 "Creates a constants for a C type enum list, symbols are created
27 in the created in the current package. The symbol is the concatenation
28 of the enum-name name, separator-string, and field-name"
32 (declare (fixnum counter))
34 (let ((name (if (listp arg) (car arg) arg))
35 (value (if (listp arg)
37 (setq counter (cadr arg))
42 (setq name (intern (concatenate 'string
43 (symbol-name enum-name)
46 (push `(uffi:def-constant ,name ,value) constants)))
47 (setf cmds (append '(progn)
48 #+allegro `((ff:def-foreign-type ,enum-name :int))
49 #+lispworks `((fli:define-c-typedef ,enum-name :int))
50 #+cmu `((alien:def-alien-type ,enum-name alien:signed))
51 #-openmcl `((def-mcl-type ,enum-name :integer))
52 #+openmcl `((ccl::def-foreign-type ,enum-name :int))
53 (nreverse constants)))
58 (defmacro def-array-pointer (name-array type)
59 `(def-mcl-type ,name-array '(:array ,type)))
63 ; so we could allow '(:array :long) or deref with other type like :long only
64 (defun array-type (type)
67 (let ((type-list (if (eq (car type) 'quote) (nth 1 type) type)))
68 (when (and (listp type-list) (eq (car type-list) :array))
69 (setf result (cadr type-list)))))
73 (defmacro deref-array (obj type i)
74 "Returns a field from a row"
75 (let* ((array-type (array-type type))
76 (local-type (convert-from-uffi-type array-type :allocation))
77 (accessor (first (macroexpand `(ccl:pref obj ,local-type)))))
80 (* (the fixnum ,i) ,(size-of-foreign-type local-type)))))
83 ; this expands to the %set-xx functions which has different params than %put-xx
84 (defmacro deref-array-set (obj type i value)
85 (let* ((array-type (array-type type))
86 (local-type (convert-from-uffi-type array-type :allocation))
87 (accessor (first (macroexpand `(ccl:pref obj ,local-type))))
88 (settor (first (macroexpand `(setf (,accessor obj ,local-type) value)))))
91 (* (the fixnum ,i) ,(size-of-foreign-type local-type))
94 (defsetf deref-array deref-array-set)
97 (defun process-struct-fields (name fields variant)
99 (dolist (field fields)
100 (let* ((field-name (car field))
102 (def (append (list field-name)
103 (if (eq type :pointer-self)
104 #+cmu `((* (alien:struct ,name)))
106 `(,(convert-from-uffi-type type :struct))))))
108 (push (list def) processed)
109 (push def processed))))
110 (nreverse processed)))
113 (defmacro def-struct (name &rest fields)
114 `(ccl:defrecord ,name ,@(process-struct-fields name fields nil)))
117 (defmacro def-union (name &rest fields)
118 `(ccl:defrecord ,name (:variant ,@(process-struct-fields name fields t))))
122 (defmacro def-struct (name &rest fields)
123 `(ccl::def-foreign-type nil
124 (:struct ,name ,@(process-struct-fields name fields nil))))
127 (defmacro def-union (name &rest fields)
128 `(ccl::def-foreign-type nil
129 (:union ,name ,@(process-struct-fields name fields nil))))
131 ; Assuming everything is pointer based - no support for Mac handles
132 (defmacro get-slot-value (obj type slot) ;use setf to set values
133 `(ccl:pref ,obj ,(read-from-string (format nil ":~a.~a" (keyword type) (keyword slot)))))
135 (defmacro set-slot-value (obj type slot value) ;use setf to set values
136 `(setf (ccl:pref ,obj ,(read-from-string (format nil ":~a.~a" (keyword type) (keyword slot)))) ,value))
139 (defsetf get-slot-value set-slot-value)
143 (defmacro get-slot-pointer (obj type slot)
144 `(ccl:%int-to-ptr (+ (ccl:%ptr-to-int ,obj) (the fixnum (ccl:field-info ,type ,slot)))))
147 (defmacro get-slot-pointer (obj type slot)
148 `(let ((field (ccl::%find-foreign-record-type-field ,type ,slot)))
149 (ccl:%int-to-ptr (+ (ccl:%ptr-to-int ,obj) (the fixnum (ccl::foreign-record-field-offset field))))))
153 #| a few simple tests
163 (defvar s (allocate-foreign-object :struct))
164 (setf (get-slot-value s :struct :s1) 3)
165 (get-slot-value s :struct :s1)
166 (setf (get-slot-value s :struct :u1.s1) 5)
167 (get-slot-value s :struct :u1.s1)