(defun %instance-set (instance index new-value)
(setf (%instance-ref instance index) new-value))
+;;; Normally IR2 converted, definition needed for interpreted structure
+;;; constructors only.
+#!+sb-eval
+(defun %make-structure-instance (dd slot-specs &rest slot-values)
+ (let ((instance (%make-instance (dd-instance-length dd))))
+ (setf (%instance-layout instance) (dd-layout-or-lose dd))
+ (mapc (lambda (spec value)
+ (destructuring-bind (raw-type . index) (cdr spec)
+ (macrolet ((make-case ()
+ `(ecase raw-type
+ ((t)
+ (setf (%instance-ref instance index) value))
+ ,@(mapcar
+ (lambda (rsd)
+ `(,(raw-slot-data-raw-type rsd)
+ (setf (,(raw-slot-data-accessor-name rsd)
+ instance index)
+ value)))
+ *raw-slot-data-list*))))
+ (make-case))))
+ slot-specs slot-values)
+ instance))
+
#!-hppa
(progn
(defun %raw-instance-ref/word (instance index)
(defun %raw-instance-set/complex-double (instance index new-value)
(declare (type index index)
(type (complex double-float) new-value))
- (%raw-instance-set/complex-double instance index new-value)))
+ (%raw-instance-set/complex-double instance index new-value))
+) ; #!-HPPA
+#!+hppa
+(progn
(defun %raw-ref-single (vec index)
(declare (type index index))
(%raw-ref-single vec index))
(defun %raw-set-complex-long (vec index val)
(declare (type index index))
(%raw-set-complex-long vec index val))
+) ; #!+HPPA
(defun %instance-layout (instance)
(%instance-layout instance))
(%set-funcallable-instance-info fin i new-value))
(defun funcallable-instance-fun (fin)
- (%funcallable-instance-lexenv fin))
-
-;;; The heart of the magic of funcallable instances ("FINs"). When
-;;; called (as with any other function), we grab the code pointer, and
-;;; call it, leaving the original function object in LEXENV (in case
-;;; it was a closure). If it is actually a FIN, then we need to do an
-;;; extra indirection with funcallable-instance-lexenv to get at any
-;;; closure environment. This extra indirection is set up when
-;;; accessing the closure environment of an INSTANCE-LAMBDA. Note that
-;;; the original FIN pointer is lost, so if the called function wants
-;;; to get at the original object to do some slot accesses, it must
-;;; close over the FIN object.
-;;;
-;;; If we set the FIN function to be a FIN, we directly copy across
-;;; both the code pointer and the lexenv, since that code pointer (for
-;;; an instance-lambda) is expecting that lexenv to be accessed. This
-;;; effectively pre-flattens what would otherwise be a chain of
-;;; indirections. (That used to happen when PCL dispatch functions
-;;; were byte-compiled; now that the byte compiler is gone, I can't
-;;; think of another example offhand. -- WHN 2001-10-06)
-;;;
-;;; The only loss is that if someone accesses the
-;;; FUNCALLABLE-INSTANCE-FUN, then won't get a FIN back. This
-;;; probably doesn't matter, since PCL only sets the FIN function.
+ (%funcallable-instance-function fin))
+
(defun (setf funcallable-instance-fun) (new-value fin)
- (setf (%funcallable-instance-fun fin)
- (%closure-fun new-value))
- (setf (%funcallable-instance-lexenv fin)
- (if (funcallable-instance-p new-value)
- (%funcallable-instance-lexenv new-value)
- new-value)))
-
-;;; service function for structure constructors
-(defun %make-instance-with-layout (layout)
- ;; Make sure the object ends at a two-word boundary. Note that this does
- ;; not affect the amount of memory used, since the allocator would add the
- ;; same padding anyway. However, raw slots are indexed from the length of
- ;; the object as indicated in the header, so the pad word needs to be
- ;; included in that length to guarantee proper alignment of raw double float
- ;; slots, necessary for (at least) the SPARC backend.
- (let* ((length (layout-length layout))
- (result (%make-instance (+ length (mod (1+ length) 2)))))
- (setf (%instance-layout result) layout)
- result))
+ (setf (%funcallable-instance-function fin) new-value))
\f
;;;; target-only parts of the DEFSTRUCT top level code
(when (layout-invalid layout)
(error "attempt to copy an obsolete structure:~% ~S" structure))
- ;; Copy ordinary slots.
+ ;; Copy ordinary slots and layout.
(dotimes (i (- len nuntagged))
(declare (type index i))
(setf (%instance-ref res i)
(%raw-instance-ref/word structure i)))
res))
+
+\f
+
+;; Do an EQUALP comparison on the raw slots (only, not the normal slots) of a
+;; structure.
+(defun raw-instance-slots-equalp (layout x y)
+ ;; This implementation sucks, but hopefully EQUALP on raw structures
+ ;; won't be a major bottleneck for anyone. It'd be tempting to do
+ ;; all this with %RAW-INSTANCE-REF/WORD and bitwise comparisons, but
+ ;; that'll fail in some cases. For example -0.0 and 0.0 are EQUALP
+ ;; but have different bit patterns. -- JES, 2007-08-21
+ (loop with i = -1
+ for dsd in (dd-slots (layout-info layout))
+ for raw-type = (dsd-raw-type dsd)
+ for rsd = (when raw-type
+ (find raw-type
+ *raw-slot-data-list*
+ :key 'raw-slot-data-raw-type))
+ for accessor = (when rsd
+ (raw-slot-data-accessor-name rsd))
+ always (or (not accessor)
+ (progn
+ (incf i)
+ (equalp (funcall accessor x i)
+ (funcall accessor y i))))))
\f
;;; default PRINT-OBJECT method
+(defun %print-structure-sans-layout-info (name stream)
+ ;; KLUDGE: during PCL build debugging, we can sometimes
+ ;; attempt to print out a PCL object (with null LAYOUT-INFO).
+ (pprint-logical-block (stream nil :prefix "#<" :suffix ">")
+ (prin1 name stream)
+ (write-char #\space stream)
+ (write-string "(no LAYOUT-INFO)" stream)))
+
+(defun %print-structure-sans-slots (name stream)
+ ;; the structure type doesn't count as a component for *PRINT-LEVEL*
+ ;; processing. We can likewise elide the logical block processing,
+ ;; since all we have to print is the type name. -- CSR, 2004-10-05
+ (write-string "#S(" stream)
+ (prin1 name stream)
+ (write-char #\) stream))
+
(defun %default-structure-pretty-print (structure stream)
(let* ((layout (%instance-layout structure))
(name (classoid-name (layout-classoid layout)))
(dd (layout-info layout)))
- ;; KLUDGE: during the build process with SB-SHOW, we can sometimes
- ;; attempt to print out a PCL object (with null LAYOUT-INFO).
- #!+sb-show
- (when (null dd)
- (pprint-logical-block (stream nil :prefix "#<" :suffix ">")
- (prin1 name stream)
- (write-char #\space stream)
- (write-string "(no LAYOUT-INFO)"))
- (return-from %default-structure-pretty-print nil))
- ;; the structure type doesn't count as a component for
- ;; *PRINT-LEVEL* processing. We can likewise elide the logical
- ;; block processing, since all we have to print is the type name.
- ;; -- CSR, 2004-10-05
- (when (and dd (null (dd-slots dd)))
- (write-string "#S(" stream)
- (prin1 name stream)
- (write-char #\) stream)
- (return-from %default-structure-pretty-print nil))
- (pprint-logical-block (stream nil :prefix "#S(" :suffix ")")
- (prin1 name stream)
- (let ((remaining-slots (dd-slots dd)))
- (when remaining-slots
- (write-char #\space stream)
- ;; CMU CL had (PPRINT-INDENT :BLOCK 2 STREAM) here,
- ;; but I can't see why. -- WHN 20000205
- (pprint-newline :linear stream)
- (loop
- (pprint-pop)
- (let ((slot (pop remaining-slots)))
- (write-char #\: stream)
- (output-symbol-name (symbol-name (dsd-name slot)) stream)
- (write-char #\space stream)
- (pprint-newline :miser stream)
- (output-object (funcall (fdefinition (dsd-accessor-name slot))
- structure)
- stream)
- (when (null remaining-slots)
- (return))
- (write-char #\space stream)
- (pprint-newline :linear stream))))))))
+ (cond ((not dd)
+ (%print-structure-sans-layout-info name stream))
+ ((not (dd-slots dd))
+ (%print-structure-sans-slots name stream))
+ (t
+ (pprint-logical-block (stream nil :prefix "#S(" :suffix ")")
+ (prin1 name stream)
+ (let ((remaining-slots (dd-slots dd)))
+ (when remaining-slots
+ (write-char #\space stream)
+ ;; CMU CL had (PPRINT-INDENT :BLOCK 2 STREAM) here,
+ ;; but I can't see why. -- WHN 20000205
+ (pprint-newline :linear stream)
+ (loop
+ (pprint-pop)
+ (let ((slot (pop remaining-slots)))
+ (write-char #\: stream)
+ (output-symbol-name (symbol-name (dsd-name slot)) stream)
+ (write-char #\space stream)
+ (pprint-newline :miser stream)
+ (output-object (funcall (fdefinition (dsd-accessor-name slot))
+ structure)
+ stream)
+ (when (null remaining-slots)
+ (return))
+ (write-char #\space stream)
+ (pprint-newline :linear stream))))))))))
+
(defun %default-structure-ugly-print (structure stream)
(let* ((layout (%instance-layout structure))
(name (classoid-name (layout-classoid layout)))
(dd (layout-info layout)))
- (when (and dd (null (dd-slots dd)))
- (write-string "#S(" stream)
- (prin1 name stream)
- (write-char #\) stream)
- (return-from %default-structure-ugly-print nil))
- (descend-into (stream)
- (write-string "#S(" stream)
- (prin1 name stream)
- (do ((index 0 (1+ index))
- (remaining-slots (dd-slots dd) (cdr remaining-slots)))
- ((or (null remaining-slots)
- (and (not *print-readably*)
- *print-length*
- (>= index *print-length*)))
- (if (null remaining-slots)
- (write-string ")" stream)
- (write-string " ...)" stream)))
- (declare (type index index))
- (write-char #\space stream)
- (write-char #\: stream)
- (let ((slot (first remaining-slots)))
- (output-symbol-name (symbol-name (dsd-name slot)) stream)
- (write-char #\space stream)
- (output-object
- (funcall (fdefinition (dsd-accessor-name slot))
- structure)
- stream))))))
+ (cond ((not dd)
+ (%print-structure-sans-layout-info name stream))
+ ((not (dd-slots dd))
+ (%print-structure-sans-slots name stream))
+ (t
+ (descend-into (stream)
+ (write-string "#S(" stream)
+ (prin1 name stream)
+ (do ((index 0 (1+ index))
+ (remaining-slots (dd-slots dd) (cdr remaining-slots)))
+ ((or (null remaining-slots)
+ (and (not *print-readably*)
+ *print-length*
+ (>= index *print-length*)))
+ (if (null remaining-slots)
+ (write-string ")" stream)
+ (write-string " ...)" stream)))
+ (declare (type index index))
+ (write-string " :" stream)
+ (let ((slot (first remaining-slots)))
+ (output-symbol-name (symbol-name (dsd-name slot)) stream)
+ (write-char #\space stream)
+ (output-object
+ (funcall (fdefinition (dsd-accessor-name slot))
+ structure)
+ stream))))))))
+
(defun default-structure-print (structure stream depth)
(declare (ignore depth))
(cond ((funcallable-instance-p structure)
(%default-structure-pretty-print structure stream))
(t
(%default-structure-ugly-print structure stream))))
+
(def!method print-object ((x structure-object) stream)
(default-structure-print x stream *current-level-in-print*))
\f
(when (layout-invalid layout)
(error "An obsolete structure accessor function was called."))
(/noshow0 "back from testing LAYOUT-INVALID LAYOUT")
- ;; FIXME: CMU CL used (%INSTANCEP OBJ) here. Check that
- ;; (TYPEP OBJ 'INSTANCE) is optimized to equally efficient code.
- (and (typep obj 'instance)
+ (and (%instancep obj)
(let ((obj-layout (%instance-layout obj)))
(cond ((eq obj-layout layout)
;; (In this case OBJ-LAYOUT can't be invalid, because
:datum x
:expected-type (classoid-name (layout-classoid layout))))
(values))
+
\f
(/show0 "target-defstruct.lisp end of file")