X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fpcl%2Fdefs.lisp;h=068b49f4f60016a14fbf0fa2c9c8aa4304c4b7c9;hb=ee90e535c985f697c71d839083aed16710f846fd;hp=781f4c6ec8d7ed78378ea55dc1afdd91015da758;hpb=feea06ce0acba516d739867b23341509e9c36d50;p=sbcl.git diff --git a/src/pcl/defs.lisp b/src/pcl/defs.lisp index 781f4c6..068b49f 100644 --- a/src/pcl/defs.lisp +++ b/src/pcl/defs.lisp @@ -38,50 +38,18 @@ has already been partially loaded. This may not work, you may~%~ need to get a fresh lisp (reboot) and then load PCL.")) -;;; comments from CMU CL version of PCL: -;;; This is like fdefinition on the Lispm. If Common Lisp had -;;; something like function specs I wouldn't need this. On the other -;;; hand, I don't like the way this really works so maybe function -;;; specs aren't really right either? -;;; I also don't understand the real implications of a Lisp-1 on this -;;; sort of thing. Certainly some of the lossage in all of this is -;;; because these SPECs name global definitions. -;;; Note that this implementation is set up so that an implementation -;;; which has a 'real' function spec mechanism can use that instead -;;; and in that way get rid of setf generic function names. -(defmacro parse-gspec (spec - (non-setf-var . non-setf-case)) - `(let ((,non-setf-var ,spec)) ,@non-setf-case)) - -;;; If symbol names a function which is traced, return the untraced -;;; definition. This lets us get at the generic function object even -;;; when it is traced. -(defun unencapsulated-fdefinition (symbol) - (fdefinition symbol)) - -;;; If symbol names a function which is traced, redefine the `real' -;;; definition without affecting the trace. -(defun fdefine-carefully (name new-definition) - (progn - (sb-c::note-name-defined name :function) - new-definition) - (setf (fdefinition name) new-definition)) - -(defun gboundp (spec) - (parse-gspec spec - (name (fboundp name)))) - -(defun gmakunbound (spec) - (parse-gspec spec - (name (fmakunbound name)))) - +#-sb-fluid (declaim (inline gdefinition)) (defun gdefinition (spec) - (parse-gspec spec - (name (unencapsulated-fdefinition name)))) + ;; This is null layer right now, but once FDEFINITION stops bypasssing + ;; fwrappers/encapsulations we can do that here. + (fdefinition spec)) (defun (setf gdefinition) (new-value spec) - (parse-gspec spec - (name (fdefine-carefully name new-value)))) + ;; This is almost a null layer right now, but once (SETF + ;; FDEFINITION) stops bypasssing fwrappers/encapsulations we can do + ;; that here. + (sb-c::note-name-defined spec :function) ; FIXME: do we need this? Why? + (setf (fdefinition spec) new-value)) ;;;; type specifier hackery @@ -94,11 +62,12 @@ ;;; interface (defun specializer-from-type (type &aux args) + (when (symbolp type) + (return-from specializer-from-type (find-class type))) (when (consp type) (setq args (cdr type) type (car type))) (cond ((symbolp type) - (or (and (null args) (find-class type)) - (ecase type + (or (ecase type (class (coerce-to-class (car args))) (prototype (make-instance 'class-prototype-specializer :object (coerce-to-class (car args)))) @@ -232,13 +201,8 @@ (defun variable-class (var env) (caddr (var-declaration 'class var env))) -(defvar *name->class->slotd-table* (make-hash-table)) - (defvar *standard-method-combination*) -(defun make-class-predicate-name (name) - (list 'class-predicate name)) - (defun plist-value (object name) (getf (object-plist object) name)) @@ -341,7 +305,7 @@ (defclass standard-object (slot-object) ()) -(defclass funcallable-standard-object (standard-object function) +(defclass funcallable-standard-object (function standard-object) () (:metaclass funcallable-standard-class)) @@ -351,7 +315,7 @@ definition-source-mixin metaobject funcallable-standard-object) - ((documentation + ((%documentation :initform nil :initarg :documentation) ;; We need to make a distinction between the methods initially set @@ -374,7 +338,7 @@ ((name :initform nil :initarg :name - :accessor generic-function-name) + :reader generic-function-name) (methods :initform () :accessor generic-function-methods @@ -382,7 +346,7 @@ (method-class :initarg :method-class :accessor generic-function-method-class) - (method-combination + (%method-combination :initarg :method-combination :accessor generic-function-method-combination) (declarations @@ -398,64 +362,54 @@ :reader gf-arg-info) (dfun-state :initform () - :accessor gf-dfun-state)) + :accessor gf-dfun-state) + ;; Used to make DFUN-STATE & FIN-FUNCTION updates atomic. + (%lock + :initform (sb-thread::make-spinlock :name "GF lock") + :reader gf-lock)) (:metaclass funcallable-standard-class) (:default-initargs :method-class *the-class-standard-method* :method-combination *standard-method-combination*)) (defclass method (metaobject) ()) -(defclass standard-method (definition-source-mixin plist-mixin method) - ((generic-function - :initform nil - :accessor method-generic-function) -;;; (qualifiers -;;; :initform () -;;; :initarg :qualifiers -;;; :reader method-qualifiers) - (specializers - :initform () - :initarg :specializers - :reader method-specializers) - (lambda-list - :initform () - :initarg :lambda-list - :reader method-lambda-list) - (function - :initform nil - :initarg :function) ;no writer - (fast-function - :initform nil - :initarg :fast-function ;no writer - :reader method-fast-function) - (documentation - :initform nil - :initarg :documentation))) +(defclass standard-method (plist-mixin definition-source-mixin method) + ((%generic-function :initform nil :accessor method-generic-function) + (qualifiers :initform () :initarg :qualifiers :reader method-qualifiers) + (specializers :initform () :initarg :specializers + :reader method-specializers) + (lambda-list :initform () :initarg :lambda-list :reader method-lambda-list) + (%function :initform nil :initarg :function :reader method-function) + (%documentation :initform nil :initarg :documentation))) -(defclass standard-accessor-method (standard-method) - ((slot-name :initform nil - :initarg :slot-name - :reader accessor-method-slot-name) - (slot-definition :initform nil - :initarg :slot-definition - :reader accessor-method-slot-definition))) +(defclass accessor-method (standard-method) + ((slot-name :initform nil :initarg :slot-name + :reader accessor-method-slot-name))) + +(defclass standard-accessor-method (accessor-method) + ((%slot-definition :initform nil :initarg :slot-definition + :reader accessor-method-slot-definition))) (defclass standard-reader-method (standard-accessor-method) ()) (defclass standard-writer-method (standard-accessor-method) ()) ;;; an extension, apparently. (defclass standard-boundp-method (standard-accessor-method) ()) +;;; for (SLOT-VALUE X 'FOO) / ACCESSOR-SLOT-VALUE optimization, which +;;; can't be STANDARD-READER-METHOD because there is no associated +;;; slot definition. +(defclass global-reader-method (accessor-method) ()) +(defclass global-writer-method (accessor-method) ()) +(defclass global-boundp-method (accessor-method) ()) + (defclass method-combination (metaobject) - ((documentation - :reader method-combination-documentation - :initform nil - :initarg :documentation))) + ((%documentation :initform nil :initarg :documentation))) (defclass standard-method-combination (definition-source-mixin method-combination) - ((type - :reader method-combination-type - :initarg :type) + ((type-name + :reader method-combination-type-name + :initarg :type-name) (options :reader method-combination-options :initarg :options))) @@ -468,6 +422,14 @@ :initarg :args-lambda-list :reader long-method-combination-args-lambda-list))) +(defclass short-method-combination (standard-method-combination) + ((operator + :reader short-combination-operator + :initarg :operator) + (identity-with-one-argument + :reader short-combination-identity-with-one-argument + :initarg :identity-with-one-argument))) + (defclass slot-definition (metaobject) ((name :initform nil @@ -493,17 +455,16 @@ :initform nil :initarg :initargs :accessor slot-definition-initargs) - (type - :initform t - :initarg :type - :accessor slot-definition-type) - (documentation - :initform nil - :initarg :documentation) - (class - :initform nil - :initarg :class - :accessor slot-definition-class))) + (%type :initform t :initarg :type :accessor slot-definition-type) + (%type-check-function :initform nil + :initarg type-check-function + :accessor slot-definition-type-check-function) + (%documentation + :initform nil :initarg :documentation + ;; KLUDGE: we need a reader for bootstrapping purposes, in + ;; COMPUTE-EFFECTIVE-SLOT-DEFINITION-INITARGS. + :reader %slot-definition-documentation) + (%class :initform nil :initarg :class :accessor slot-definition-class))) (defclass standard-slot-definition (slot-definition) ((allocation @@ -579,41 +540,61 @@ ()) (defclass specializer (metaobject) - ((type :initform nil :reader specializer-type))) + ;; KLUDGE: in sbcl-0.9.10.2 this was renamed from TYPE, which was an + ;; external symbol of the CL package and hence potentially collides + ;; with user code. Renaming this to %TYPE, however, is the coward's + ;; way out, because the objects that PCL puts in this slot aren't + ;; (quite) types: they are closer to kinds of specializer. However, + ;; the wholesale renaming and disentangling of specializers didn't + ;; appeal. (See also message and + ;; responses in comp.lang.lisp). -- CSR, 2006-02-27 + ((%type :initform nil :reader specializer-type))) + +;;; STANDARD in this name doesn't mean "blessed by a standard" but +;;; "comes as standard with PCL"; that is, it includes CLASS-EQ +;;; and vestiges of PROTOTYPE specializers +(defclass standard-specializer (specializer) ()) (defclass specializer-with-object (specializer) ()) (defclass exact-class-specializer (specializer) ()) -(defclass class-eq-specializer (exact-class-specializer +(defclass class-eq-specializer (standard-specializer + exact-class-specializer specializer-with-object) ((object :initarg :class :reader specializer-class :reader specializer-object))) -(defclass class-prototype-specializer (specializer-with-object) +(defclass class-prototype-specializer (standard-specializer specializer-with-object) ((object :initarg :class :reader specializer-class :reader specializer-object))) -(defclass eql-specializer (exact-class-specializer specializer-with-object) +(defclass eql-specializer (standard-specializer exact-class-specializer specializer-with-object) ((object :initarg :object :reader specializer-object :reader eql-specializer-object))) (defvar *eql-specializer-table* (make-hash-table :test 'eql)) +(defvar *eql-specializer-table-lock* + (sb-thread::make-spinlock :name "EQL-specializer table lock")) + (defun intern-eql-specializer (object) - (or (gethash object *eql-specializer-table*) - (setf (gethash object *eql-specializer-table*) - (make-instance 'eql-specializer :object object)))) + ;; Need to lock, so that two threads don't get non-EQ specializers + ;; for an EQL object. + (sb-thread::with-spinlock (*eql-specializer-table-lock*) + (or (gethash object *eql-specializer-table*) + (setf (gethash object *eql-specializer-table*) + (make-instance 'eql-specializer :object object))))) (defclass class (dependent-update-mixin definition-source-mixin - specializer) + standard-specializer) ((name :initform nil - :initarg :name - :accessor class-name) + :initarg :name + :reader class-name) (class-eq-specializer :initform nil :reader class-eq-specializer) @@ -628,12 +609,15 @@ :reader class-direct-subclasses) (direct-methods :initform (cons nil nil)) - (predicate-name - :initform nil - :reader class-predicate-name) - (documentation + (%documentation :initform nil :initarg :documentation) + ;; True if the class definition was compiled with a (SAFETY 3) + ;; optimization policy. + (safe-p + :initform nil + :initarg safe-p + :accessor safe-p) (finalized-p :initform nil :reader class-finalized-p))) @@ -651,7 +635,7 @@ ;;; The class PCL-CLASS is an implementation-specific common ;;; superclass of all specified subclasses of the class CLASS. (defclass pcl-class (class) - ((class-precedence-list + ((%class-precedence-list :reader class-precedence-list) ;; KLUDGE: see note in CPL-OR-NIL (cpl-available-p @@ -673,10 +657,10 @@ (defclass slot-class (pcl-class) ((direct-slots :initform () - :accessor class-direct-slots) + :reader class-direct-slots) (slots :initform () - :accessor class-slots))) + :reader class-slots))) ;;; The class STD-CLASS is an implementation-specific common ;;; superclass of the classes STANDARD-CLASS and @@ -708,16 +692,19 @@ :initarg :from-defclass-p))) (defclass definition-source-mixin (standard-object) - ((source :initform *load-pathname* :reader definition-source - :initarg :definition-source))) + ((source + :initform nil + :reader definition-source + :initarg :definition-source))) (defclass plist-mixin (standard-object) - ((plist :initform () :accessor object-plist))) + ((plist :initform () :accessor object-plist :initarg plist))) (defclass dependent-update-mixin (plist-mixin) ()) (defparameter *early-class-predicates* '((specializer specializerp) + (standard-specializer standard-specializer-p) (exact-class-specializer exact-class-specializer-p) (class-eq-specializer class-eq-specializer-p) (eql-specializer eql-specializer-p) @@ -731,12 +718,16 @@ (forward-referenced-class forward-referenced-class-p) (method method-p) (standard-method standard-method-p) + (accessor-method accessor-method-p) (standard-accessor-method standard-accessor-method-p) (standard-reader-method standard-reader-method-p) (standard-writer-method standard-writer-method-p) (standard-boundp-method standard-boundp-method-p) + (global-reader-method global-reader-method-p) + (global-writer-method global-writer-method-p) + (global-boundp-method global-boundp-method-p) (generic-function generic-function-p) (standard-generic-function standard-generic-function-p) (method-combination method-combination-p) - (long-method-combination long-method-combination-p))) - + (long-method-combination long-method-combination-p) + (short-method-combination short-method-combination-p)))