X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Falien-type.lisp;h=b0aeb651a86207b97687ec878930d54cec761d4e;hb=0c3bbfaa2286626a2d915c8810f690aefc702661;hp=40e3ea14fd4eab59e7691f6b12c82dcb81f195dd;hpb=77360ee4a1f94c41b807be7ad0e8687199fceef1;p=sbcl.git

diff --git a/src/code/alien-type.lisp b/src/code/alien-type.lisp
index 40e3ea1..b0aeb65 100644
--- a/src/code/alien-type.lisp
+++ b/src/code/alien-type.lisp
@@ -13,41 +13,42 @@
 
 (in-package "SB!KERNEL")
 
+(/show0 "code/alien-type.lisp 16")
+
 (!begin-collecting-cold-init-forms)
 
 (defstruct (alien-type-type
-	    (:include ctype
-		      (class-info (type-class-or-lose 'alien)))
-	    (:constructor %make-alien-type-type (alien-type)))
+            (:include ctype
+                      (class-info (type-class-or-lose 'alien)))
+            (:constructor %make-alien-type-type (alien-type))
+            (:copier nil))
   (alien-type nil :type alien-type))
 
 (!define-type-class alien)
 
+(!define-type-method (alien :negate) (type)
+  (make-negation-type :type type))
+
 (!define-type-method (alien :unparse) (type)
   `(alien ,(unparse-alien-type (alien-type-type-alien-type type))))
 
 (!define-type-method (alien :simple-subtypep) (type1 type2)
   (values (alien-subtype-p (alien-type-type-alien-type type1)
-			   (alien-type-type-alien-type type2))
-	  t))
+                           (alien-type-type-alien-type type2))
+          t))
 
 ;;; KLUDGE: This !DEFINE-SUPERCLASSES gets executed much later than the
 ;;; others (toplevel form time instead of cold load init time) because
 ;;; ALIEN-VALUE itself is a structure which isn't defined until fairly
 ;;; late.
-;;;
-;;; FIXME: I'm somewhat tempted to just punt ALIEN from the type system.
-;;; It's sufficiently unlike the others that it's a bit of a pain, and
-;;; it doesn't seem to be put to any good use either in type inference or
-;;; in type declarations.
 (!define-superclasses alien ((alien-value)) progn)
 
 (!define-type-method (alien :simple-=) (type1 type2)
   (let ((alien-type-1 (alien-type-type-alien-type type1))
-	(alien-type-2 (alien-type-type-alien-type type2)))
+        (alien-type-2 (alien-type-type-alien-type type2)))
     (values (or (eq alien-type-1 alien-type-2)
-		(alien-type-= alien-type-1 alien-type-2))
-	    t)))
+                (alien-type-= alien-type-1 alien-type-2))
+            t)))
 
 (!def-type-translator alien (&optional (alien-type nil))
   (typecase alien-type
@@ -61,9 +62,11 @@
 (defun make-alien-type-type (&optional alien-type)
   (if alien-type
       (let ((lisp-rep-type (compute-lisp-rep-type alien-type)))
-	(if lisp-rep-type
-	    (specifier-type lisp-rep-type)
-	    (%make-alien-type-type alien-type)))
+        (if lisp-rep-type
+            (single-value-specifier-type lisp-rep-type)
+            (%make-alien-type-type alien-type)))
       *universal-type*))
 
 (!defun-from-collected-cold-init-forms !alien-type-cold-init)
+
+(/show0 "code/alien-type.lisp end of file")