;;;; -*- Mode: lisp; indent-tabs-mode: nil -*-
;;;
;;; translator-test.lisp --- Testing type translators.
;;;
  Copyright ( C ) 2005 - 2006 ,     <  >
;;;
;;; Permission is hereby granted, free of charge, to any person
;;; obtaining a copy of this software and associated documentation
  files ( the " Software " ) , to deal in the Software without
;;; restriction, including without limitation the rights to use, copy,
;;; modify, merge, publish, distribute, sublicense, and/or sell copies
  of the Software , and to permit persons to whom the Software is
;;; furnished to do so, subject to the following conditions:
;;;
;;; The above copyright notice and this permission notice shall be
  included in all copies or substantial portions of the Software .
;;;
  THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND ,
;;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
;;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
;;; NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
;;; HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
;;; WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
;;; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
;;; DEALINGS IN THE SOFTWARE.
;;;

(defpackage #:cffi-translator-test
  (:use #:common-lisp #:cffi))

(in-package #:cffi-translator-test)

#   
;;;
;;; This is a silly type translator that doesn't actually do any
;;; translating, but it prints out a debug message when the pointer is
;;; converted to/from its foreign representation.

(define-foreign-type verbose-pointer-type ()
  ()
  (:actual-type :pointer))

(defmethod translate-to-foreign (value (type verbose-pointer-type))
  (format *debug-io* "~&;; to foreign: VERBOSE-POINTER: ~S~%" value)
  value)

(defmethod translate-from-foreign (value (type verbose-pointer-type))
  (format *debug-io* "~&;; from foreign: VERBOSE-POINTER: ~S~%" value)
  value)

;;;# Verbose String Translator
;;;
  A VERBOSE - STRING extends VERBOSE - POINTER and converts Lisp strings
;;; C strings.  If things are working properly, both type translators
;;; should be called when converting a Lisp string to/from a C string.
;;;
;;; The translators should be called most-specific-first when
;;; translating to C, and most-specific-last when translating from C.

(define-foreign-type verbose-string-type (verbose-pointer-type)
  ()
  (:simple-parser verbose-string))

(defmethod translate-to-foreign ((s string) (type verbose-string-type))
  (let ((value (foreign-string-alloc s)))
    (format *debug-io* "~&;; to foreign: VERBOSE-STRING: ~S -> ~S~%" s value)
    (values (call-next-method value type) t)))

(defmethod translate-to-foreign (value (type verbose-string-type))
  (if (pointerp value)
      (progn
        (format *debug-io* "~&;; to foreign: VERBOSE-STRING: ~S -> ~:*~S~%" value)
        (values (call-next-method) nil))
      (error "Cannot convert ~S to a foreign string: it is not a Lisp ~
              string or pointer." value)))

(defmethod translate-from-foreign (ptr (type verbose-string-type))
  (let ((value (foreign-string-to-lisp (call-next-method))))
    (format *debug-io* "~&;; from foreign: VERBOSE-STRING: ~S -> ~S~%" ptr value)
    value))

(defmethod free-translated-object (ptr (type verbose-string-type) free-p)
  (when free-p
    (format *debug-io* "~&;; freeing VERBOSE-STRING: ~S~%" ptr)
    (foreign-string-free ptr)))

(defun test-verbose-string ()
  (foreign-funcall "getenv" verbose-string "SHELL" verbose-string))

 -*- Mode: lisp; indent-tabs-mode: nil -*-

 translator-test.lisp --- Testing type translators.


 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation
 restriction, including without limitation the rights to use, copy,
 modify, merge, publish, distribute, sublicense, and/or sell copies
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be

 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 DEALINGS IN THE SOFTWARE.


 This is a silly type translator that doesn't actually do any
 translating, but it prints out a debug message when the pointer is
 converted to/from its foreign representation.
# Verbose String Translator

 C strings.  If things are working properly, both type translators
 should be called when converting a Lisp string to/from a C string.

 The translators should be called most-specific-first when
 translating to C, and most-specific-last when translating from C.
  Copyright ( C ) 2005 - 2006 ,     <  >
  files ( the " Software " ) , to deal in the Software without
  of the Software , and to permit persons to whom the Software is
  included in all copies or substantial portions of the Software .
  THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND ,

(defpackage #:cffi-translator-test
  (:use #:common-lisp #:cffi))

(in-package #:cffi-translator-test)

#   

(define-foreign-type verbose-pointer-type ()
  ()
  (:actual-type :pointer))

(defmethod translate-to-foreign (value (type verbose-pointer-type))
  (format *debug-io* "~&;; to foreign: VERBOSE-POINTER: ~S~%" value)
  value)

(defmethod translate-from-foreign (value (type verbose-pointer-type))
  (format *debug-io* "~&;; from foreign: VERBOSE-POINTER: ~S~%" value)
  value)

  A VERBOSE - STRING extends VERBOSE - POINTER and converts Lisp strings

(define-foreign-type verbose-string-type (verbose-pointer-type)
  ()
  (:simple-parser verbose-string))

(defmethod translate-to-foreign ((s string) (type verbose-string-type))
  (let ((value (foreign-string-alloc s)))
    (format *debug-io* "~&;; to foreign: VERBOSE-STRING: ~S -> ~S~%" s value)
    (values (call-next-method value type) t)))

(defmethod translate-to-foreign (value (type verbose-string-type))
  (if (pointerp value)
      (progn
        (format *debug-io* "~&;; to foreign: VERBOSE-STRING: ~S -> ~:*~S~%" value)
        (values (call-next-method) nil))
      (error "Cannot convert ~S to a foreign string: it is not a Lisp ~
              string or pointer." value)))

(defmethod translate-from-foreign (ptr (type verbose-string-type))
  (let ((value (foreign-string-to-lisp (call-next-method))))
    (format *debug-io* "~&;; from foreign: VERBOSE-STRING: ~S -> ~S~%" ptr value)
    value))

(defmethod free-translated-object (ptr (type verbose-string-type) free-p)
  (when free-p
    (format *debug-io* "~&;; freeing VERBOSE-STRING: ~S~%" ptr)
    (foreign-string-free ptr)))

(defun test-verbose-string ()
  (foreign-funcall "getenv" verbose-string "SHELL" verbose-string))
