+++ /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 1.25 2002/09/30 08:50:00 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)
-
-#+mcl
-(defvar *keyword-package* (find-package "KEYWORD"))
-
-#+mcl
-; MCL and OpenMCL expect a lot of FFI elements to be keywords (e.g. struct field names in OpenMCL)
-; So this provides a function to convert any quoted symbols to keywords.
-(defun keyword (obj)
- (cond ((keywordp obj)
- obj)
- ((null obj)
- nil)
- ((symbolp obj)
- (intern (symbol-name obj) *keyword-package*))
- ((and (listp obj) (eq (car obj) 'cl:quote))
- (keyword (cadr obj)))
- ((stringp obj)
- (intern obj *keyword-package*))
- (t
- obj)))
-
-; Wrapper for unexported function we have to use
-#+(and mcl (not openmcl))
-(defmacro def-mcl-type (name type)
- `(ccl::def-mactype ,(keyword name) (ccl:find-mactype ,type)))
-
-(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 mcl)
- (declare (ignore type))
- #+(or lispworks allegro mcl)
- `(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))
- #+mcl
- (let ((mcl-type (convert-from-uffi-type type :type)))
- (unless (or (keywordp mcl-type) (consp mcl-type))
- (setf mcl-type `(quote ,mcl-type)))
- #+(and mcl (not openmcl))
- `(def-mcl-type ,(keyword name) ,mcl-type)
- #+openmcl
- `(ccl::def-foreign-type ,(keyword name) ,mcl-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)))
-
-#+(and mcl (not openmcl))
-(setq +type-conversion-list+
- '((* . :pointer) (:void . :void)
- (:short . :short) (:unsigned-short . :unsigned-short)
- (:pointer-void . :pointer)
- (:cstring . :string)
- (:char . :character)
- (:unsigned-char . :unsigned-byte)
- (:byte . :signed-byte) (:unsigned-byte . :unsigned-byte)
- (:int . :long) (:unsigned-int . :unsigned-long)
- (:long . :long) (:unsigned-long . :unsigned-long)
- (:float . :single-float) (:double . :double-float)
- (:array . :array)))
-
-#+openmcl
-(setq +type-conversion-list+
- '((* . :address) (:void . :void)
- (:short . :short) (:unsigned-short . :unsigned-short)
- (:pointer-void . :address)
- (:cstring . :address)
- (:char . :signed-char)
- (:unsigned-char . :unsigned-char)
- (:byte . :signed-byte) (:unsigned-byte . :unsigned-byte)
- (:int . :int) (:unsigned-int . :unsigned-int)
- (:long . :long) (:unsigned-long . :unsigned-long)
- (:long-long . :signed-doubleword) (:unsigned-long-long . :unsigned-doubleword)
- (:float . :single-float) (:double . :double-float)
- (:array . :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
- #-mcl type
- #+mcl (keyword 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))
- #+(and mcl (not openmcl))
- ((and (eq type :void) (eq context :return)) nil)
- (t
- (basic-convert-from-uffi-type type)))
- (let ((sub-type (car type)))
- (case sub-type
- (cl:quote
- (convert-from-uffi-type (cadr type) context))
- (:struct-pointer
- #+mcl `(:* (:struct ,(%convert-from-uffi-type (cadr type) :struct)))
- #-mcl (%convert-from-uffi-type (list '* (cadr type)) :struct)
- )
- (:struct
- #+mcl `(:struct ,(%convert-from-uffi-type (cadr type) :struct))
- #-mcl (%convert-from-uffi-type (cadr type) :struct)
- )
- (t
- (cons (%convert-from-uffi-type (first type) context)
- (%convert-from-uffi-type (rest type) context)))))))
-
-(defun convert-from-uffi-type (type context)
- (let ((result (%convert-from-uffi-type type context)))
- (cond
- ((atom result) result)
- #+openmcl
- ((eq (car result) :address)
- (if (eq context :struct)
- (append '(:*) (cdr result))
- :address))
- #+(and mcl (not openmcl))
- ((and (eq (car result) :pointer) (eq context :allocation) :pointer))
- (t result))))
-
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