;;;; files for more information.
(in-package "SB!KERNEL")
+
+(/show0 "code/defstruct.lisp 15")
\f
;;;; getting LAYOUTs
;; documentation on the structure
(doc nil :type (or string null))
;; prefix for slot names. If NIL, none.
- (conc-name (concat-pnames name '-) :type (or symbol null))
+ (conc-name (symbolicate name "-") :type (or symbol null))
;; the name of the primary standard keyword constructor, or NIL if none
(default-constructor nil :type (or symbol null))
;; all the explicit :CONSTRUCTOR specs, with name defaulted
(constructors () :type list)
;; name of copying function
- (copier (concat-pnames 'copy- name) :type (or symbol null))
+ (copier (symbolicate "COPY-" name) :type (or symbol null))
;; name of type predicate
- (predicate (concat-pnames name '-p) :type (or symbol null))
+ (predicate-name (symbolicate name "-P") :type (or symbol null))
;; the arguments to the :INCLUDE option, or NIL if no included
;; structure
(include nil :type list)
;; classes, CLASS-STRUCTURE-P = NIL)
;;
;; vector element type
- (element-type 't)
+ (element-type t)
;; T if :NAMED was explicitly specified, NIL otherwise
(named nil :type boolean)
;; any INITIAL-OFFSET option on this direct type
%name
;; its position in the implementation sequence
(index (required-argument) :type fixnum)
- ;; Name of accessor, or NIL if this accessor has the same name as an
- ;; inherited accessor (which we don't want to shadow.)
- (accessor nil)
+ ;; the name of the accessor function
+ ;;
+ ;; (CMU CL had extra complexity here ("..or NIL if this accessor has
+ ;; the same name as an inherited accessor (which we don't want to
+ ;; shadow)") but that behavior doesn't seem to be specified by (or
+ ;; even particularly consistent with) ANSI, so it's gone in SBCL.)
+ (accessor-name nil)
default ; default value expression
(type t) ; declared type specifier
;; If this object does not describe a raw slot, this value is T.
;;; string to avoid creating lots of worthless symbols at load time.
(defun dsd-name (dsd)
(intern (string (dsd-%name dsd))
- (if (dsd-accessor dsd)
- (symbol-package (dsd-accessor dsd))
- *package*)))
+ (if (dsd-accessor-name dsd)
+ (symbol-package (dsd-accessor-name dsd))
+ (sane-package))))
\f
;;;; typed (non-class) structures
;;;; the legendary DEFSTRUCT macro itself (both CL:DEFSTRUCT and its
;;;; close personal friend SB!XC:DEFSTRUCT)
-;;; Return a list of forms to install print and make-load-form funs, mentioning
-;;; them in the expansion so that they can be compiled.
+;;; Return a list of forms to install PRINT and MAKE-LOAD-FORM funs,
+;;; mentioning them in the expansion so that they can be compiled.
(defun class-method-definitions (defstruct)
(let ((name (dd-name defstruct)))
`((locally
(funcall #',(farg po) ,x ,s))))
(t nil))))
,@(let ((pure (dd-pure defstruct)))
- (cond ((eq pure 't)
+ (cond ((eq pure t)
`((setf (layout-pure (class-layout
(sb!xc:find-class ',name)))
t)))
,@(let ((def-con (dd-default-constructor defstruct)))
(when (and def-con (not (dd-alternate-metaclass defstruct)))
`((setf (structure-class-constructor (sb!xc:find-class ',name))
- #',def-con))))
- ;; FIXME: MAKE-LOAD-FORM is supposed to be handled here, too.
- ))))
+ #',def-con))))))))
;;; FIXME: I really would like to make structure accessors less special,
;;; just ordinary inline functions. (Or perhaps inline functions with special
;;; compact implementations of their expansions, to avoid bloating the system.)
(if (class-structure-p dd)
(let ((inherits (inherits-for-structure dd)))
`(progn
+ (/noshow0 "doing CLASS-STRUCTURE-P case for DEFSTRUCT " ,name)
(eval-when (:compile-toplevel :load-toplevel :execute)
(%compiler-only-defstruct ',dd ',inherits))
(%defstruct ',dd ',inherits)
,@(when (eq (dd-type dd) 'structure)
`((%compiler-defstruct ',dd)))
+ (/noshow0 "starting not-for-the-xc-host section in DEFSTRUCT")
,@(unless expanding-into-code-for-xc-host-p
(append (raw-accessor-definitions dd)
(predicate-definitions dd)
;(copier-definition dd)
(constructor-definitions dd)
(class-method-definitions dd)))
+ (/noshow0 "done with DEFSTRUCT " ,name)
',name))
`(progn
+ (/show0 "doing NOT CLASS-STRUCTURE-P case for DEFSTRUCT " ,name)
(eval-when (:compile-toplevel :load-toplevel :execute)
(setf (info :typed-structure :info ',name) ',dd))
,@(unless expanding-into-code-for-xc-host-p
(typed-predicate-definitions dd)
(typed-copier-definitions dd)
(constructor-definitions dd)))
+ (/noshow0 "done with DEFSTRUCT " ,name)
',name)))))
(sb!xc:defmacro defstruct (name-and-options &rest slot-descriptions)
#!+sb-doc
"DEFSTRUCT {Name | (Name Option*)} {Slot | (Slot [Default] {Key Value}*)}
- Define the structure type Name. Instances are created by MAKE-<name>, which
- takes keyword arguments allowing initial slot values to the specified.
+ Define the structure type Name. Instances are created by MAKE-<name>,
+ which takes &KEY arguments allowing initial slot values to the specified.
A SETF'able function <name>-<slot> is defined for each slot to read and
write slot values. <name>-p is a type predicate.
(collect ((res))
(dolist (slot (dd-slots dd))
(let ((stype (dsd-type slot))
- (accname (dsd-accessor slot))
+ (accessor-name (dsd-accessor-name slot))
(argname (gensym "ARG"))
(nvname (gensym "NEW-VALUE-")))
(multiple-value-bind (accessor offset data)
(slot-accessor-form dd slot argname)
;; When accessor exists and is raw
- (when (and accname (not (eq accessor '%instance-ref)))
- (res `(declaim (inline ,accname)))
- (res `(declaim (ftype (function (,name) ,stype) ,accname)))
- (res `(defun ,accname (,argname)
+ (when (and accessor-name
+ (not (eq accessor-name '%instance-ref)))
+ (res `(declaim (inline ,accessor-name)))
+ (res `(declaim (ftype (function (,name) ,stype) ,accessor-name)))
+ (res `(defun ,accessor-name (,argname)
(truly-the ,stype (,accessor ,data ,offset))))
(unless (dsd-read-only slot)
- (res `(declaim (inline (setf ,accname))))
+ (res `(declaim (inline (setf ,accessor-name))))
(res `(declaim (ftype (function (,stype ,name) ,stype)
- (setf ,accname))))
+ (setf ,accessor-name))))
;; FIXME: I rewrote this somewhat from the CMU CL definition.
;; Do some basic tests to make sure that reading and writing
;; raw slots still works correctly.
- (res `(defun (setf ,accname) (,nvname ,argname)
+ (res `(defun (setf ,accessor-name) (,nvname ,argname)
(setf (,accessor ,data ,offset) ,nvname)
,nvname)))))))
(res))))
;;; Return a list of forms which create a predicate for an untyped DEFSTRUCT.
(defun predicate-definitions (dd)
- (let ((pred (dd-predicate dd))
+ (let ((pred (dd-predicate-name dd))
(argname (gensym)))
(when pred
(if (eq (dd-type dd) 'funcallable-structure)
;;; DEFSTRUCT.
(defun typed-predicate-definitions (defstruct)
(let ((name (dd-name defstruct))
- (pred (dd-predicate defstruct))
+ (predicate-name (dd-predicate-name defstruct))
(argname (gensym)))
- (when (and pred (dd-named defstruct))
+ (when (and predicate-name (dd-named defstruct))
(let ((ltype (dd-lisp-type defstruct)))
- `((defun ,pred (,argname)
+ `((defun ,predicate-name (,argname)
(and (typep ,argname ',ltype)
(eq (elt (the ,ltype ,argname)
,(cdr (car (last (find-name-indices defstruct)))))
conc-name
(make-symbol (string conc-name))))))
(:constructor
- (destructuring-bind (&optional (cname (concat-pnames 'make- name))
+ (destructuring-bind (&optional (cname (symbolicate "MAKE-" name))
&rest stuff)
args
(push (cons cname stuff) (dd-constructors defstruct))))
(:copier
- (destructuring-bind (&optional (copier (concat-pnames 'copy- name)))
+ (destructuring-bind (&optional (copier (symbolicate "COPY-" name)))
args
(setf (dd-copier defstruct) copier)))
(:predicate
- (destructuring-bind (&optional (pred (concat-pnames name '-p))) args
- (setf (dd-predicate defstruct) pred)))
+ (destructuring-bind (&optional (predicate-name (symbolicate name "-P")))
+ args
+ (setf (dd-predicate-name defstruct) predicate-name)))
(:include
(when (dd-include defstruct)
(error "more than one :INCLUDE option"))
(cond ((eq type 'funcallable-structure)
(setf (dd-type defstruct) type))
((member type '(list vector))
- (setf (dd-element-type defstruct) 't)
+ (setf (dd-element-type defstruct) t)
(setf (dd-type defstruct) type))
((and (consp type) (eq (first type) 'vector))
(destructuring-bind (vector vtype) type
(eval-when (:compile-toplevel :load-toplevel :execute)
(defun parse-name-and-options (name-and-options)
(destructuring-bind (name &rest options) name-and-options
+ (aver name) ; A null name doesn't seem to make sense here.
(let ((defstruct (make-defstruct-description name)))
(dolist (option options)
(cond ((consp option)
name-and-options))))
(when (stringp (car slot-descriptions))
(setf (dd-doc result) (pop slot-descriptions)))
- (dolist (slot slot-descriptions)
- (allocate-1-slot result (parse-1-dsd result slot)))
+ (dolist (slot-description slot-descriptions)
+ (allocate-1-slot result (parse-1-dsd result slot-description)))
result))
) ; EVAL-WHEN
;;;; stuff to parse slot descriptions
;;; Parse a slot description for DEFSTRUCT, add it to the description
-;;; and return it. If supplied, ISLOT is a pre-initialized DSD that we
-;;; modify to get the new slot. This is supplied when handling
-;;; included slots. If the new accessor name is already an accessor
-;;; for same slot in some included structure, then set the
-;;; DSD-ACCESSOR to NIL so that we don't clobber the more general
-;;; accessor.
+;;; and return it. If supplied, SLOT is a pre-initialized DSD
+;;; that we modify to get the new slot. This is supplied when handling
+;;; included slots.
(defun parse-1-dsd (defstruct spec &optional
- (islot (make-defstruct-slot-description :%name ""
- :index 0
- :type t)))
+ (slot (make-defstruct-slot-description :%name ""
+ :index 0
+ :type t)))
(multiple-value-bind (name default default-p type type-p read-only ro-p)
(cond
((listp spec)
read-only ro-p)))
(t
(when (keywordp spec)
- ;; FIXME: should be style warning
- (warn "Keyword slot name indicates probable syntax ~
- error in DEFSTRUCT -- ~S."
- spec))
+ (style-warn "Keyword slot name indicates probable syntax ~
+ error in DEFSTRUCT: ~S."
+ spec))
spec))
(when (find name (dd-slots defstruct) :test #'string= :key #'dsd-%name)
- (error 'program-error
+ (error 'simple-program-error
:format-control "duplicate slot name ~S"
:format-arguments (list name)))
- (setf (dsd-%name islot) (string name))
- (setf (dd-slots defstruct) (nconc (dd-slots defstruct) (list islot)))
-
- (let* ((accname (concat-pnames (dd-conc-name defstruct) name))
- (existing (info :function :accessor-for accname)))
- (if (and (structure-class-p existing)
- (not (eq (sb!xc:class-name existing) (dd-name defstruct)))
- (string= (dsd-%name (find accname
- (dd-slots
- (layout-info
- (class-layout existing)))
- :key #'dsd-accessor))
- name))
- (setf (dsd-accessor islot) nil)
- (setf (dsd-accessor islot) accname)))
+ (setf (dsd-%name slot) (string name))
+ (setf (dd-slots defstruct) (nconc (dd-slots defstruct) (list slot)))
+
+ (let ((accessor-name (symbolicate (or (dd-conc-name defstruct) "") name))
+ (predicate-name (dd-predicate-name defstruct)))
+ (setf (dsd-accessor-name slot) accessor-name)
+ (when (eql accessor-name predicate-name)
+ ;; Some adventurous soul has named a slot so that its accessor
+ ;; collides with the structure type predicate. ANSI doesn't
+ ;; specify what to do in this case. As of 2001-09-04, Martin
+ ;; Atzmueller reports that CLISP and Lispworks both give
+ ;; priority to the slot accessor, so that the predicate is
+ ;; overwritten. We might as well do the same (as well as
+ ;; signalling a warning).
+ (style-warn
+ "~@<The structure accessor name ~S is the same as the name of the ~
+ structure type predicate. ANSI doesn't specify what to do in ~
+ this case; this implementation chooses to overwrite the type ~
+ predicate with the slot accessor.~@:>"
+ accessor-name)
+ (setf (dd-predicate-name defstruct) nil)))
(when default-p
- (setf (dsd-default islot) default))
+ (setf (dsd-default slot) default))
(when type-p
- (setf (dsd-type islot)
- (if (eq (dsd-type islot) 't)
+ (setf (dsd-type slot)
+ (if (eq (dsd-type slot) t)
type
- `(and ,(dsd-type islot) ,type))))
+ `(and ,(dsd-type slot) ,type))))
(when ro-p
(if read-only
- (setf (dsd-read-only islot) t)
- (when (dsd-read-only islot)
+ (setf (dsd-read-only slot) t)
+ (when (dsd-read-only slot)
(error "Slot ~S is :READ-ONLY in parent and must be :READ-ONLY in subtype ~S."
name
- (dsd-name islot)))))
- islot))
+ (dsd-name slot)))))
+ slot))
;;; When a value of type TYPE is stored in a structure, should it be
;;; stored in a raw slot? Return (VALUES RAW? RAW-TYPE WORDS), where
(setf (dd-raw-index defstruct) (dd-raw-index included-structure))
(setf (dd-raw-length defstruct) (dd-raw-length included-structure)))
- (dolist (islot (dd-slots included-structure))
- (let* ((iname (dsd-name islot))
- (modified (or (find iname modified-slots
+ (dolist (included-slot (dd-slots included-structure))
+ (let* ((included-name (dsd-name included-slot))
+ (modified (or (find included-name modified-slots
:key #'(lambda (x) (if (atom x) x (car x)))
:test #'string=)
- `(,iname))))
- (parse-1-dsd defstruct modified (copy-structure islot)))))))
+ `(,included-name))))
+ (parse-1-dsd defstruct
+ modified
+ (copy-structure included-slot)))))))
\f
;;; This function is called at macroexpand time to compute the INHERITS
;;; vector for a structure type definition.
(let ((old-info (layout-info old-layout)))
(when (defstruct-description-p old-info)
(dolist (slot (dd-slots old-info))
- (fmakunbound (dsd-accessor slot))
+ (fmakunbound (dsd-accessor-name slot))
(unless (dsd-read-only slot)
- (fmakunbound `(setf ,(dsd-accessor slot)))))))
+ (fmakunbound `(setf ,(dsd-accessor-name slot)))))))
(%redefine-defstruct class old-layout layout)
(setq layout (class-layout class))))
(dolist (slot (dd-slots info))
(let ((dsd slot))
- (when (and (dsd-accessor slot)
+ (when (and (dsd-accessor-name slot)
(eq (dsd-raw-type slot) t))
- (protect-cl (dsd-accessor slot))
- (setf (symbol-function (dsd-accessor slot))
+ (protect-cl (dsd-accessor-name slot))
+ (setf (symbol-function (dsd-accessor-name slot))
(structure-slot-getter layout dsd))
(unless (dsd-read-only slot)
- (setf (fdefinition `(setf ,(dsd-accessor slot)))
+ (setf (fdefinition `(setf ,(dsd-accessor-name slot)))
(structure-slot-setter layout dsd))))))
;; FIXME: See comment on corresponding code in %%COMPILER-DEFSTRUCT.
;; GENESIS understands DEFUN but doesn't understand a
;; (SETF SYMBOL-FUNCTION) call inside %DEFSTRUCT.)
#|
- (let ((pred (dd-predicate info)))
- (when pred
- (proclaim-as-defstruct-function-name pred)
+ (let ((predicate-name (dd-predicate-name info)))
+ (when predicate-name
+ (proclaim-as-defstruct-function-name predicate-name)
(setf (info :function :inlinep pred) :inline)
- (setf (info :function :inline-expansion pred)
+ (setf (info :function :inline-expansion predicate-name)
`(lambda (x) (typep x ',name)))))
|#
(dolist (slot (dd-slots info))
- (let* ((fun (dsd-accessor slot))
+ (let* ((fun (dsd-accessor-name slot))
(setf-fun `(setf ,fun)))
(when (and fun (eq (dsd-raw-type slot) t))
(proclaim-as-defstruct-function-name fun)
(let ((type (dd-name info)))
(setf (info :type :compiler-layout type) nil)
(undefine-function-name (dd-copier info))
- (undefine-function-name (dd-predicate info))
+ (undefine-function-name (dd-predicate-name info))
(dolist (slot (dd-slots info))
- (let ((fun (dsd-accessor slot)))
+ (let ((fun (dsd-accessor-name slot)))
(undefine-function-name fun)
(unless (dsd-read-only slot)
(undefine-function-name `(setf ,fun))))))
(t
(dsd-index slot)))
(cond
- ((eq rtype 't) object)
+ ((eq rtype t) object)
(data)
(t
`(truly-the (simple-array (unsigned-byte 32) (*))
(dolist (slot (dd-slots defstruct))
(let ((dum (gensym))
(name (dsd-name slot)))
- (arglist `((,(intern (string name) "KEYWORD") ,dum)
- ,(dsd-default slot)))
+ (arglist `((,(keywordicate name) ,dum) ,(dsd-default slot)))
(types (dsd-type slot))
(vals dum)))
(funcall creator
(return-from constructor-definitions ()))
(unless (or defaults boas)
- (push (concat-pnames 'make- (dd-name defstruct)) defaults))
+ (push (symbolicate "MAKE-" (dd-name defstruct)) defaults))
(collect ((res))
(when defaults
\f
;;;; compiler stuff
-;;; Like PROCLAIM-AS-FUNCTION-NAME, but we also set the kind to
+;;; This is like PROCLAIM-AS-FUNCTION-NAME, but we also set the kind to
;;; :DECLARED and blow away any ASSUMED-TYPE. Also, if the thing is a
;;; slot accessor currently, quietly unaccessorize it. And if there
;;; are any undefined warnings, we nuke them.
(rest args)))
(inherits (inherits-for-structure defstruct)))
(function-%compiler-only-defstruct defstruct inherits)))
+
+(/show0 "code/defstruct.lisp end of file")
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