0.8.0.78.vector-nil-string.8:
[sbcl.git] / src / code / array.lisp
index 3993a91..4f0052b 100644 (file)
@@ -51,7 +51,9 @@
 
 (defun %data-vector-and-index (array index)
   (if (array-header-p array)
-      (%with-array-data array index nil)
+      (multiple-value-bind (vector index)
+          (%with-array-data array index nil)
+        (values vector index))
       (values array index)))
 
 ;;; It'd waste space to expand copies of error handling in every
     ;; and for all in any reasonable user programs.)
     ((t)
      (values #.sb!vm:simple-vector-widetag #.sb!vm:n-word-bits))
-    ((character base-char standard-char)
-     (values #.sb!vm:simple-string-widetag #.sb!vm:n-byte-bits))
+    ((base-char standard-char)
+     (values #.sb!vm:simple-base-string-widetag #.sb!vm:n-byte-bits))
     ((bit)
      (values #.sb!vm:simple-bit-vector-widetag 1))
     ;; OK, we have to wade into SUBTYPEPing after all.
     (t
-     ;; FIXME: The data here are redundant with
-     ;; *SPECIALIZED-ARRAY-ELEMENT-TYPE-PROPERTIES*.
-     (pick-vector-type type
-       (nil (values #.sb!vm:simple-array-nil-widetag 0))
-       (base-char (values #.sb!vm:simple-string-widetag #.sb!vm:n-byte-bits))
-       (bit (values #.sb!vm:simple-bit-vector-widetag 1))
-       ((unsigned-byte 2)
-       (values #.sb!vm:simple-array-unsigned-byte-2-widetag 2))
-       ((unsigned-byte 4)
-       (values #.sb!vm:simple-array-unsigned-byte-4-widetag 4))
-       ((unsigned-byte 8)
-       (values #.sb!vm:simple-array-unsigned-byte-8-widetag 8))
-       ((unsigned-byte 16)
-       (values #.sb!vm:simple-array-unsigned-byte-16-widetag 16))
-       ((unsigned-byte 32)
-       (values #.sb!vm:simple-array-unsigned-byte-32-widetag 32))
-       ((signed-byte 8)
-       (values #.sb!vm:simple-array-signed-byte-8-widetag 8))
-       ((signed-byte 16)
-       (values #.sb!vm:simple-array-signed-byte-16-widetag 16))
-       ((signed-byte 30)
-       (values #.sb!vm:simple-array-signed-byte-30-widetag 32))
-       ((signed-byte 32)
-       (values #.sb!vm:simple-array-signed-byte-32-widetag 32))
-       (single-float (values #.sb!vm:simple-array-single-float-widetag 32))
-       (double-float (values #.sb!vm:simple-array-double-float-widetag 64))
-       #!+long-float
-       (long-float
-       (values #.sb!vm:simple-array-long-float-widetag
-               #!+x86 96 #!+sparc 128))
-       ((complex single-float)
-       (values #.sb!vm:simple-array-complex-single-float-widetag 64))
-       ((complex double-float)
-       (values #.sb!vm:simple-array-complex-double-float-widetag 128))
-       #!+long-float
-       ((complex long-float)
-       (values #.sb!vm:simple-array-complex-long-float-widetag
-               #!+x86 192
-               #!+sparc 256))
-       (t (values #.sb!vm:simple-vector-widetag #.sb!vm:n-word-bits))))))
+     #.`(pick-vector-type type
+        ,@(map 'list
+               (lambda (saetp)
+                 `(,(sb!vm:saetp-specifier saetp)
+                   (values ,(sb!vm:saetp-typecode saetp)
+                           ,(sb!vm:saetp-n-bits saetp))))
+               sb!vm:*specialized-array-element-type-properties*)))))
+
 (defun %complex-vector-widetag (type)
   (case type
     ;; Pick off some easy common cases.
     ((t)
      #.sb!vm:complex-vector-widetag)
-    ((character base-char)
-     #.sb!vm:complex-string-widetag) 
+    ((base-char)
+     #.sb!vm:complex-base-string-widetag)
+    ((nil)
+     #.sb!vm:complex-vector-nil-widetag)
     ((bit)
      #.sb!vm:complex-bit-vector-widetag)
     ;; OK, we have to wade into SUBTYPEPing after all.
     (t
      (pick-vector-type type
-       (base-char #.sb!vm:complex-string-widetag)
+       (nil #.sb!vm:complex-vector-nil-widetag)
+       (base-char #.sb!vm:complex-base-string-widetag)
        (bit #.sb!vm:complex-bit-vector-widetag)
        (t #.sb!vm:complex-vector-widetag)))))
 
                 (array (allocate-vector
                         type
                         length
-                        (ceiling (* (if (= type sb!vm:simple-string-widetag)
+                        (ceiling (* (if (= type sb!vm:simple-base-string-widetag)
                                         (1+ length)
                                         length)
                                     n-bits)
   (coerce (the list objects) 'simple-vector))
 \f
 ;;;; accessor/setter functions
-
 (eval-when (:compile-toplevel :execute)
   (defparameter *specialized-array-element-types*
+    ;; FIXME: Ideally we would generate this list from
+    ;; SPECIALIZED-ARRAY-ELEMENT-TYPE-PROPERTIES.  However, this list
+    ;; is optimized for frequency of occurrence, not type lattice
+    ;; relationships, so it's tricky to do so cleanly.
     '(t
       character
       bit
-      (unsigned-byte 2)
-      (unsigned-byte 4)
       (unsigned-byte 8)
       (unsigned-byte 16)
       (unsigned-byte 32)
       (complex single-float)
       (complex double-float)
       #!+long-float (complex long-float)
+      (unsigned-byte 4)
+      (unsigned-byte 2)
       nil)))
-    
+
 (defun hairy-data-vector-ref (array index)
   (with-array-data ((vector array) (index index) (end))
     (declare (ignore end))
                                              `(= widetag ,item))))
                                     (cdr stuff)))
                                  stuff))))
-      ;; FIXME: The data here are redundant with
-      ;; *SPECIALIZED-ARRAY-ELEMENT-TYPE-PROPERTIES*.
-      (pick-element-type
-       (sb!vm:simple-array-nil-widetag nil)
-       ((sb!vm:simple-string-widetag sb!vm:complex-string-widetag) 'base-char)
-       ((sb!vm:simple-bit-vector-widetag
-        sb!vm:complex-bit-vector-widetag) 'bit)
-       (sb!vm:simple-vector-widetag t)
-       (sb!vm:simple-array-unsigned-byte-2-widetag '(unsigned-byte 2))
-       (sb!vm:simple-array-unsigned-byte-4-widetag '(unsigned-byte 4))
-       (sb!vm:simple-array-unsigned-byte-8-widetag '(unsigned-byte 8))
-       (sb!vm:simple-array-unsigned-byte-16-widetag '(unsigned-byte 16))
-       (sb!vm:simple-array-unsigned-byte-32-widetag '(unsigned-byte 32))
-       (sb!vm:simple-array-signed-byte-8-widetag '(signed-byte 8))
-       (sb!vm:simple-array-signed-byte-16-widetag '(signed-byte 16))
-       (sb!vm:simple-array-signed-byte-30-widetag '(signed-byte 30))
-       (sb!vm:simple-array-signed-byte-32-widetag '(signed-byte 32))
-       (sb!vm:simple-array-single-float-widetag 'single-float)
-       (sb!vm:simple-array-double-float-widetag 'double-float)
-       #!+long-float
-       (sb!vm:simple-array-long-float-widetag 'long-float)
-       (sb!vm:simple-array-complex-single-float-widetag
-       '(complex single-float))
-       (sb!vm:simple-array-complex-double-float-widetag
-       '(complex double-float))
-       #!+long-float
-       (sb!vm:simple-array-complex-long-float-widetag '(complex long-float))
-       ((sb!vm:simple-array-widetag
-        sb!vm:complex-vector-widetag
-        sb!vm:complex-array-widetag)
-       (with-array-data ((array array) (start) (end))
-         (declare (ignore start end))
-         (array-element-type array)))
-       (t
-       (error 'type-error :datum array :expected-type 'array))))))
+      #.`(pick-element-type
+         ,@(map 'list
+                (lambda (saetp)
+                  `(,(if (sb!vm:saetp-complex-typecode saetp)
+                         (list (sb!vm:saetp-typecode saetp)
+                               (sb!vm:saetp-complex-typecode saetp))
+                         (sb!vm:saetp-typecode saetp))
+                    ',(sb!vm:saetp-specifier saetp)))
+                sb!vm:*specialized-array-element-type-properties*)
+         ((sb!vm:simple-array-widetag
+           sb!vm:complex-vector-widetag
+           sb!vm:complex-array-widetag)
+          (with-array-data ((array array) (start) (end))
+            (declare (ignore start end))
+            (array-element-type array)))
+         (t
+          (error 'type-error :datum array :expected-type 'array))))))
 
 (defun array-rank (array)
   #!+sb-doc
   (unless (array-header-p vector)
     (macrolet ((frob (name &rest things)
                 `(etypecase ,name
-                   ((simple-array nil (*)) (error 'cell-error
-                                            :name 'nil-array-element))
+                   ((simple-array nil (*)) (error 'nil-array-accessed-error))
                    ,@(mapcar (lambda (thing)
                                (destructuring-bind (type-spec fill-value)
                                    thing
                                          ,fill-value
                                          :start new-length))))
                              things))))
-      ;; FIXME: The associations between vector types and initial
-      ;; values here are redundant with
-      ;; *SPECIALIZED-ARRAY-ELEMENT-TYPE-PROPERTIES*.
-      (frob vector
-       (simple-vector 0)
-       (simple-base-string #.*default-init-char-form*)
-       (simple-bit-vector 0)
-       ((simple-array (unsigned-byte 2) (*)) 0)
-       ((simple-array (unsigned-byte 4) (*)) 0)
-       ((simple-array (unsigned-byte 8) (*)) 0)
-       ((simple-array (unsigned-byte 16) (*)) 0)
-       ((simple-array (unsigned-byte 32) (*)) 0)
-       ((simple-array (signed-byte 8) (*)) 0)
-       ((simple-array (signed-byte 16) (*)) 0)
-       ((simple-array (signed-byte 30) (*)) 0)
-       ((simple-array (signed-byte 32) (*)) 0)
-       ((simple-array single-float (*)) (coerce 0 'single-float))
-       ((simple-array double-float (*)) (coerce 0 'double-float))
-       #!+long-float
-       ((simple-array long-float (*)) (coerce 0 'long-float))
-       ((simple-array (complex single-float) (*))
-        (coerce 0 '(complex single-float)))
-       ((simple-array (complex double-float) (*))
-        (coerce 0 '(complex double-float)))
-       #!+long-float
-       ((simple-array (complex long-float) (*))
-        (coerce 0 '(complex long-float))))))
+      #.`(frob vector
+         ,@(map 'list
+                (lambda (saetp)
+                  `((simple-array ,(sb!vm:saetp-specifier saetp) (*))
+                    ,(if (eq (sb!vm:saetp-specifier saetp) 'base-char)
+                         *default-init-char-form*
+                         (sb!vm:saetp-initial-element-default saetp))))
+                (remove-if-not
+                 #'sb!vm:saetp-specifier
+                 sb!vm:*specialized-array-element-type-properties*)))))
   ;; Only arrays have fill-pointers, but vectors have their length
   ;; parameter in the same place.
   (setf (%array-fill-pointer vector) new-length)