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+;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; Package: UFFI -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name:          function.cl
+;;;; Purpose:       UFFI source to C function defintions
+;;;; Programmer:    Kevin M. Rosenberg
+;;;; Date Started:  Feb 2002
+;;;;
+;;;; $Id: functions.lisp,v 1.1 2002/09/30 10:02:36 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)
+
+(defun process-function-args (args)
+  (if (null args)
+      #+lispworks nil
+      #+allegro '(:void)
+      #+cmu nil
+      #+(and mcl (not openmcl)) nil
+      #+mcl (values nil nil)
+
+      ;; args not null
+      #+(or lispworks allegro cmu (and mcl (not openmcl)))
+      (let (processed)
+	(dolist (arg args)
+	  (push (process-one-function-arg arg) processed))
+	(nreverse processed))
+      #+openmcl
+      (let ((processed nil)
+	    (params nil)
+	    name type)
+	(dolist (arg args)
+	  (setf name (car arg))
+	  (setf type (convert-from-uffi-type (cadr arg) :routine))
+	  ;;(when (and (listp type) (eq (car type) :address))
+	  ;;(setf type :address))
+	  (push name params)
+	  (push type processed)
+	  (push name processed))
+	(values (nreverse params) (nreverse processed)))
+    ))
+
+(defun process-one-function-arg (arg)
+  (let ((name (car arg))
+	(type (convert-from-uffi-type (cadr arg) :routine)))
+    #+cmu
+    (list name type :in)
+    #+(or allegro lispworks (and mcl (not openmcl)))
+    (if (and (listp type) (listp (car type)))
+	(append (list name) type)
+      (list name type))
+    ))    
+
+
+(defun allegro-convert-return-type (type)
+  (if (and (listp type) (not (listp (car type))))
+      (list type)
+    type))
+
+;; name is either a string representing foreign name, or a list
+;; of foreign-name as a string and lisp name as a symbol
+(defmacro def-function (names args &key module returning)
+  #+(or cmu allegro mcl) (declare (ignore module))
+  
+  (let* ((result-type (convert-from-uffi-type returning :return))
+	 (function-args (process-function-args args))
+	 (foreign-name (if (atom names) names (car names)))
+	 (lisp-name (if (atom names) (make-lisp-name names) (cadr names))))
+    
+    #+allegro
+    `(ff:def-foreign-call (,lisp-name ,foreign-name)
+	 ,function-args
+       :returning ,(allegro-convert-return-type result-type)
+       :call-direct t
+       :strings-convert nil)
+    #+cmu
+    `(alien:def-alien-routine (,foreign-name ,lisp-name)
+	 ,result-type
+       ,@function-args)
+    #+lispworks
+    `(fli:define-foreign-function (,lisp-name ,foreign-name :source)
+	 ,function-args
+       ,@(if module (list :module module) (values))
+       :result-type ,result-type
+       :calling-convention :cdecl)
+    #+(and mcl (not openmcl))
+    `(eval-when (:compile-toplevel :load-toplevel :execute)
+       (ccl:define-entry-point (,lisp-name ,foreign-name)
+         ,function-args
+         ,result-type))
+    #+(and openmcl darwinppc-target)
+    (setf foreign-name (concatenate 'string "_" foreign-name))
+    #+openmcl
+    (multiple-value-bind (params args) (process-function-args args)
+      `(defun ,lisp-name ,params
+         (ccl::external-call ,foreign-name ,@args ,result-type)))
+    ))
+
+
+(defun make-lisp-name (name)
+  (let ((converted (substitute #\- #\_ name)))
+     (intern 
+      #+case-sensitive converted
+      #-case-sensitive (string-upcase converted))))
+
+