--- /dev/null
+;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; Package: UFFI -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name: primitives.cl
+;;;; Purpose: UFFI source to handle immediate types
+;;;; Programmer: Kevin M. Rosenberg
+;;;; Date Started: Feb 2002
+;;;;
+;;;; $Id: primitives.cl,v 1.22 2002/08/23 15:28:52 kevin Exp $
+;;;;
+;;;; This file, part of UFFI, is Copyright (c) 2002 by Kevin M. Rosenberg
+;;;;
+;;;; UFFI users are granted the rights to distribute and use this software
+;;;; as governed by the terms of the Lisp Lesser GNU Public License
+;;;; (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)
+
+(defmacro def-constant (name value &key (export nil))
+ "Macro to define a constant and to export it"
+ `(eval-when (:compile-toplevel :load-toplevel :execute)
+ (defconstant ,name ,value)
+ ,(when export (list 'export `(quote ,name)))
+ ',name))
+
+(defmacro def-type (name type)
+ "Generates a (deftype) statement for CL. Currently, only CMUCL
+supports takes advantage of this optimization."
+ #+(or lispworks allegro)
+ (declare (ignore type))
+ #+(or lispworks allegro)
+ `(deftype ,name () t)
+ #+cmu
+ `(deftype ,name () '(alien:alien ,(convert-from-uffi-type type :declare)))
+ #+sbcl
+ `(deftype ,name () '(sb-alien:alien ,(convert-from-uffi-type type :declare)))
+ )
+
+(defmacro null-char-p (val)
+ "Returns T if character is NULL"
+ `(zerop ,val))
+
+(defmacro def-foreign-type (name type)
+ #+lispworks `(fli:define-c-typedef ,name ,(convert-from-uffi-type type :type))
+ #+allegro `(ff:def-foreign-type ,name ,(convert-from-uffi-type type :type))
+ #+cmu `(alien:def-alien-type ,name ,(convert-from-uffi-type type :type))
+ #+sbcl `(sb-alien:def-alien-type ,name ,(convert-from-uffi-type type :type))
+ )
+
+(eval-when (:compile-toplevel :load-toplevel :execute)
+ (defvar +type-conversion-hash+ (make-hash-table :size 20))
+ #+(or cmu sbcl) (defvar +cmu-def-type-hash+ (make-hash-table :size 20))
+ )
+
+#+cmu
+(defconstant +cmu-def-type-list+
+ '((:char . (alien:signed 8))
+ (:unsigned-char . (alien:unsigned 8))
+ (:byte . (alien:signed 8))
+ (:unsigned-byte . (alien:unsigned 8))
+ (:short . (alien:signed 16))
+ (:unsigned-short . (alien:unsigned 16))
+ (:int . (alien:signed 32))
+ (:unsigned-int . (alien:unsigned 32))
+ (:long . (alien:signed 32))
+ (:unsigned-long . (alien:unsigned 32))
+ (:float . alien:single-float)
+ (:double . alien:double-float)
+ )
+ "Conversions in CMUCL for def-foreign-type are different than in def-function")
+#+sbcl
+(defconstant +cmu-def-type-list+
+ '((:char . (sb-alien:signed 8))
+ (:unsigned-char . (sb-alien:unsigned 8))
+ (:byte . (sb-alien:signed 8))
+ (:unsigned-byte . (sb-alien:unsigned 8))
+ (:short . (sb-alien:signed 16))
+ (:unsigned-short . (sb-alien:unsigned 16))
+ (:int . (sb-alien:signed 32))
+ (:unsigned-int . (sb-alien:unsigned 32))
+ (:long . (sb-alien:signed 32))
+ (:unsigned-long . (sb-alien:unsigned 32))
+ (:float . sb-alien:single-float)
+ (:double . sb-alien:double-float)
+ )
+ "Conversions in SBCL for def-foreign-type are different than in def-function")
+
+(defparameter +type-conversion-list+ nil)
+
+#+cmu
+(setq +type-conversion-list+
+ '((* . *) (:void . c-call:void)
+ (:short . c-call:short)
+ (:pointer-void . (* t))
+ (:cstring . c-call:c-string)
+ (:char . c-call:char)
+ (:unsigned-char . (alien:unsigned 8))
+ (:byte . (alien:signed 8))
+ (:unsigned-byte . (alien:unsigned 8))
+ (:short . c-call:unsigned-short)
+ (:unsigned-short . c-call:unsigned-short)
+ (:int . alien:integer) (:unsigned-int . c-call:unsigned-int)
+ (:long . c-call:long) (:unsigned-long . c-call:unsigned-long)
+ (:float . c-call:float) (:double . c-call:double)
+ (:array . alien:array)))
+
+#+sbcl
+(setq +type-conversion-list+
+ '((* . *) (:void . void)
+ (:short . short)
+ (:pointer-void . (* t))
+ (:cstring . c-string)
+ (:char . char)
+ (:unsigned-char . (sb-alien:unsigned 8))
+ (:byte . (sb-alien:signed 8))
+ (:unsigned-byte . (sb-alien:unsigned 8))
+ (:short . unsigned-short)
+ (:unsigned-short . unsigned-short)
+ (:int . integer) (:unsigned-int . unsigned-int)
+ (:long . long) (:unsigned-long . unsigned-long)
+ (:float . float) (:double . double)
+ (:array . array)))
+
+#+allegro
+(setq +type-conversion-list+
+ '((* . *) (:void . :void)
+ (:short . :short)
+ (:pointer-void . (* :void))
+ (:cstring . (* :unsigned-char))
+ (:byte . :char)
+ (:unsigned-byte . :unsigned-byte)
+ (:char . :char)
+ (:unsigned-char . :unsigned-char)
+ (:int . :int) (:unsigned-int . :unsigned-int)
+ (:long . :long) (:unsigned-long . :unsigned-long)
+ (:float . :float) (:double . :double)
+ (:array . :array)))
+#+lispworks
+(setq +type-conversion-list+
+ '((* . :pointer) (:void . :void)
+ (:short . :short)
+ (:pointer-void . (:pointer :void))
+ (:cstring . (:reference-pass (:ef-mb-string :external-format :latin-1)
+ :allow-null t))
+ (:cstring-returning . (:reference (:ef-mb-string :external-format :latin-1) :allow-null t))
+ (:byte . :byte)
+ (:unsigned-byte . (:unsigned :byte))
+ (:char . :char)
+ (:unsigned-char . (:unsigned :char))
+ (:int . :int) (:unsigned-int . (:unsigned :int))
+ (:long . :long) (:unsigned-long . (:unsigned :long))
+ (:float . :float) (:double . :double)
+ (:array . :c-array)))
+
+(dolist (type +type-conversion-list+)
+ (setf (gethash (car type) +type-conversion-hash+) (cdr type)))
+
+#+(or cmu sbcl)
+(dolist (type +cmu-def-type-list+)
+ (setf (gethash (car type) +cmu-def-type-hash+) (cdr type)))
+
+(defun basic-convert-from-uffi-type (type)
+ (let ((found-type (gethash type +type-conversion-hash+)))
+ (if found-type
+ found-type
+ type)))
+
+(defun convert-from-uffi-type (type context)
+ "Converts from a uffi type to an implementation specific type"
+ (if (atom type)
+ (cond
+ #+allegro
+ ((and (or (eq context :routine) (eq context :return))
+ (eq type :cstring))
+ (setq type '((* :char) integer)))
+ #+(or cmu sbcl)
+ ((eq context :type)
+ (let ((cmu-type (gethash type +cmu-def-type-hash+)))
+ (if cmu-type
+ cmu-type
+ (basic-convert-from-uffi-type type))))
+ #+lispworks
+ ((and (eq context :return)
+ (eq type :cstring))
+ (basic-convert-from-uffi-type :cstring-returning))
+ (t
+ (basic-convert-from-uffi-type type)))
+ (cons (convert-from-uffi-type (first type) context)
+ (convert-from-uffi-type (rest type) context))))
+
+
+
+
+
+
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