1.0.0.27: various PCL cleanups in cache.lisp

[sbcl.git] / src / code / late-type.lisp

diff --git a/src/code/late-type.lisp b/src/code/late-type.lisp
index e1d2e25..0e284b0 100644 (file)
--- a/src/code/late-type.lisp
+++ b/src/code/late-type.lisp
@@ -1142,10 +1142,10 @@
   (aver (not (eq type2 *wild-type*))) ; * isn't really a type.
   (cond ((eq type2 *universal-type*)
          (values t t))
-        ((or (type-might-contain-other-types-p type1)
-             ;; some CONS types can conceal danger
-             (and (cons-type-p type1)
-                  (cons-type-might-be-empty-type type1)))
+        ;; some CONS types can conceal danger
+        ((and (cons-type-p type1) (cons-type-might-be-empty-type type1))
+         (values nil nil))
+        ((type-might-contain-other-types-p type1)
          ;; those types can be other types in disguise.  So we'd
          ;; better delegate.
          (invoke-complex-subtypep-arg1-method type1 type2))
@@ -1212,14 +1212,14 @@
      (typecase type1
        (structure-classoid *empty-type*)
        (classoid
-        (if (and (not (member type1 *non-instance-classoid-types*
-                              :key #'find-classoid))
-                 (find (classoid-layout (find-classoid 'function))
-                       (layout-inherits (classoid-layout type1))))
-            type1
-            (if (type= type1 (find-classoid 'function))
-                type2
-                nil)))
+        (if (member type1 *non-instance-classoid-types* :key #'find-classoid)
+            *empty-type*
+            (if (find (classoid-layout (find-classoid 'function))
+                      (layout-inherits (classoid-layout type1)))
+                type1
+                (if (type= type1 (find-classoid 'function))
+                    type2
+                    nil))))
        (fun-type nil)
        (t
         (if (or (type-might-contain-other-types-p type1)
@@ -2352,11 +2352,8 @@ used for a COMPLEX component.~:@>"
                           (array-type-specialized-element-type type2))
                    t)))))
 
-;;; FIXME: is this dead?
 (!define-superclasses array
-  ((base-string base-string)
-   (vector vector)
-   (array))
+  ((vector vector) (array))
   !cold-init-forms)
 
 (defun array-types-intersect (type1 type2)
@@ -2659,7 +2656,7 @@ used for a COMPLEX component.~:@>"
 ;;; mechanically unparsed.
 (!define-type-method (intersection :unparse) (type)
   (declare (type ctype type))
-  (or (find type '(ratio keyword) :key #'specifier-type :test #'type=)
+  (or (find type '(ratio keyword compiled-function) :key #'specifier-type :test #'type=)
       `(and ,@(mapcar #'type-specifier (intersection-type-types type)))))
 
 ;;; shared machinery for type equality: true if every type in the set
@@ -3092,6 +3089,8 @@ used for a COMPLEX component.~:@>"
                  (type-intersection (cons-type-car-type type1)
                                     (cons-type-car-type type2))
                  cdr-int2)))))
+
+(!define-superclasses cons ((cons)) !cold-init-forms)
 \f
 ;;;; CHARACTER-SET types
 
@@ -3104,29 +3103,29 @@ used for a COMPLEX component.~:@>"
 (!define-type-method (character-set :negate) (type)
   (let ((pairs (character-set-type-pairs type)))
     (if (and (= (length pairs) 1)
-            (= (caar pairs) 0)
-            (= (cdar pairs) (1- sb!xc:char-code-limit)))
-       (make-negation-type :type type)
-       (let ((not-character
-              (make-negation-type
-               :type (make-character-set-type
-                      :pairs '((0 . #.(1- sb!xc:char-code-limit)))))))
-         (type-union
-          not-character
-          (make-character-set-type
-           :pairs (let (not-pairs)
-                    (when (> (caar pairs) 0)
-                      (push (cons 0 (1- (caar pairs))) not-pairs))
-                    (do* ((tail pairs (cdr tail))
-                          (high1 (cdar tail))
-                          (low2 (caadr tail)))
-                         ((null (cdr tail))
-                          (when (< (cdar tail) (1- sb!xc:char-code-limit))
-                            (push (cons (1+ (cdar tail))
-                                        (1- sb!xc:char-code-limit))
-                                  not-pairs))
-                          (nreverse not-pairs))
-                      (push (cons (1+ high1) (1- low2)) not-pairs)))))))))
+             (= (caar pairs) 0)
+             (= (cdar pairs) (1- sb!xc:char-code-limit)))
+        (make-negation-type :type type)
+        (let ((not-character
+               (make-negation-type
+                :type (make-character-set-type
+                       :pairs '((0 . #.(1- sb!xc:char-code-limit)))))))
+          (type-union
+           not-character
+           (make-character-set-type
+            :pairs (let (not-pairs)
+                     (when (> (caar pairs) 0)
+                       (push (cons 0 (1- (caar pairs))) not-pairs))
+                     (do* ((tail pairs (cdr tail))
+                           (high1 (cdar tail) (cdar tail))
+                           (low2 (caadr tail) (caadr tail)))
+                          ((null (cdr tail))
+                           (when (< (cdar tail) (1- sb!xc:char-code-limit))
+                             (push (cons (1+ (cdar tail))
+                                         (1- sb!xc:char-code-limit))
+                                   not-pairs))
+                           (nreverse not-pairs))
+                       (push (cons (1+ high1) (1- low2)) not-pairs)))))))))
 
 (!define-type-method (character-set :unparse) (type)
   (cond