X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fpcl%2Fctor.lisp;h=31fc178e16f22674ac67a3550498725866ee84df;hb=54da325f13fb41669869aea688ae195426c0e231;hp=06b69ddfc555651797f8fbba341afbe22e6f84b2;hpb=cea2946076e0dac11eea1c95158e5e2326455dd8;p=sbcl.git diff --git a/src/pcl/ctor.lisp b/src/pcl/ctor.lisp index 06b69dd..31fc178 100644 --- a/src/pcl/ctor.lisp +++ b/src/pcl/ctor.lisp @@ -152,7 +152,21 @@ (ctor-function-name ctor)))) (defun make-ctor-function-name (class-name initargs safe-code-p) - (list* 'ctor class-name safe-code-p initargs)) + (labels ((arg-name (x) + (typecase x + ;; this list of types might look arbitrary but it is + ;; exactly the set of types descended into by EQUAL, + ;; which is the predicate used by globaldb to test for + ;; name equality. + (list (gensym "LIST-INITARG-")) + (string (gensym "STRING-INITARG-")) + (bit-vector (gensym "BIT-VECTOR-INITARG-")) + (pathname (gensym "PATHNAME-INITARG-")) + (t x))) + (munge (list) + (let ((*gensym-counter* 0)) + (mapcar #'arg-name list)))) + (list* 'ctor class-name safe-code-p (munge initargs)))) ;;; Keep this a separate function for testing. (defun ensure-ctor (function-name class-name initargs safe-code-p) @@ -362,10 +376,7 @@ ;; Return the name of parameter number I of a constructor ;; function. (parameter-name (i) - (let ((ps #(.p0. .p1. .p2. .p3. .p4. .p5.))) - (if (array-in-bounds-p ps i) - (aref ps i) - (format-symbol *pcl-package* ".P~D." i)))) + (format-symbol *pcl-package* ".P~D." i)) ;; Check if CLASS-ARG is a constant symbol. Give up if ;; not. (constant-class-p () @@ -504,16 +515,18 @@ (compute-applicable-methods #'initialize-instance (list proto))) (si-methods (compute-applicable-methods #'shared-initialize (list proto t))) - (setf-svuc-slots-methods + (setf-svuc-slots (loop for slot in (class-slots class) - collect (compute-applicable-methods - #'(setf slot-value-using-class) - (list nil class proto slot)))) - (sbuc-slots-methods + when (cdr (compute-applicable-methods + #'(setf slot-value-using-class) + (list nil class proto slot))) + collect slot)) + (sbuc-slots (loop for slot in (class-slots class) - collect (compute-applicable-methods - #'slot-boundp-using-class - (list class proto slot))))) + when (cdr (compute-applicable-methods + #'slot-boundp-using-class + (list class proto slot))) + collect slot))) ;; Cannot initialize these variables earlier because the generic ;; functions don't exist when PCL is built. (when (null *the-system-si-method*) @@ -546,18 +559,11 @@ '(:instance :class))) (class-slots class)) (not maybe-invalid-initargs) - (not (around-or-nonstandard-primary-method-p + (not (hairy-around-or-nonstandard-primary-method-p ii-methods *the-system-ii-method*)) (not (around-or-nonstandard-primary-method-p - si-methods *the-system-si-method*)) - ;; the instance structure protocol goes through - ;; slot-value(-using-class) and friends (actually just - ;; (SETF SLOT-VALUE-USING-CLASS) and - ;; SLOT-BOUNDP-USING-CLASS), so if there are non-standard - ;; applicable methods we can't shortcircuit them. - (every (lambda (x) (= (length x) 1)) setf-svuc-slots-methods) - (every (lambda (x) (= (length x) 1)) sbuc-slots-methods)) - (optimizing-generator ctor ii-methods si-methods) + si-methods *the-system-si-method*))) + (optimizing-generator ctor ii-methods si-methods setf-svuc-slots sbuc-slots) (fallback-generator ctor ii-methods si-methods (or maybe-invalid-initargs custom-make-instance)))))) @@ -577,11 +583,28 @@ when (null qualifiers) do (setq primary-checked-p t))) +(defun hairy-around-or-nonstandard-primary-method-p + (methods &optional standard-method) + (loop with primary-checked-p = nil + for method in methods + as qualifiers = (if (consp method) + (early-method-qualifiers method) + (safe-method-qualifiers method)) + when (or (and (eq :around (car qualifiers)) + (not (simple-next-method-call-p method))) + (and (null qualifiers) + (not primary-checked-p) + (not (null standard-method)) + (not (eq standard-method method)))) + return t + when (null qualifiers) do + (setq primary-checked-p t))) + (defun fallback-generator (ctor ii-methods si-methods use-make-instance) (declare (ignore ii-methods si-methods)) (let ((class (ctor-class ctor)) (lambda-list (make-ctor-parameter-list ctor)) - (initargs (quote-plist-keys (ctor-initargs ctor)))) + (initargs (ctor-initargs ctor))) (if use-make-instance `(lambda ,lambda-list (declare #.*optimize-speed*) @@ -589,13 +612,13 @@ ;; *COMPILING-OPTIMIZED-CONSTRUCTOR* which is bound around ;; compilation of the constructor, hence avoiding the ;; possibility of endless recursion. - (make-instance ,class ,@initargs)) + (make-instance ,class ,@(quote-plist-keys initargs))) (let ((defaults (class-default-initargs class))) (when defaults (setf initargs (ctor-default-initargs initargs defaults))) `(lambda ,lambda-list (declare #.*optimize-speed*) - (fast-make-instance ,class ,@initargs)))))) + (fast-make-instance ,class ,@(quote-plist-keys initargs))))))) ;;; Not as good as the real optimizing generator, but faster than going ;;; via MAKE-INSTANCE: 1 GF call less, and no need to check initargs. @@ -606,9 +629,11 @@ (apply #'initialize-instance .instance. initargs) .instance.)) -(defun optimizing-generator (ctor ii-methods si-methods) - (multiple-value-bind (locations names body before-method-p) - (fake-initialization-emf ctor ii-methods si-methods) +(defun optimizing-generator + (ctor ii-methods si-methods setf-svuc-slots sbuc-slots) + (multiple-value-bind (locations names body early-unbound-markers-p) + (fake-initialization-emf ctor ii-methods si-methods + setf-svuc-slots sbuc-slots) (let ((wrapper (class-wrapper (ctor-class ctor)))) (values `(lambda ,(make-ctor-parameter-list ctor) @@ -617,18 +642,17 @@ (when (layout-invalid ,wrapper) (install-initial-constructor ,ctor) (return (funcall ,ctor ,@(make-ctor-parameter-list ctor)))) - ,(wrap-in-allocate-forms ctor body before-method-p))) + ,(wrap-in-allocate-forms ctor body early-unbound-markers-p))) locations names t)))) -;;; Return a form wrapped around BODY that allocates an instance -;;; constructed by CTOR. BEFORE-METHOD-P set means we have to run -;;; before-methods, in which case we initialize instance slots to -;;; +SLOT-UNBOUND+. The resulting form binds the local variables -;;; .INSTANCE. to the instance, and .SLOTS. to the instance's slot -;;; vector around BODY. -(defun wrap-in-allocate-forms (ctor body before-method-p) +;;; Return a form wrapped around BODY that allocates an instance constructed +;;; by CTOR. EARLY-UNBOUND-MARKERS-P means slots may be accessed before we +;;; have explicitly initialized them, requiring all slots to start as +;;; +SLOT-UNBOUND+. The resulting form binds the local variables .INSTANCE. to +;;; the instance, and .SLOTS. to the instance's slot vector around BODY. +(defun wrap-in-allocate-forms (ctor body early-unbound-markers-p) (let* ((class (ctor-class ctor)) (wrapper (class-wrapper class)) (allocation-function (raw-instance-allocator class)) @@ -638,8 +662,8 @@ (get-instance-hash-code))) (.slots. (make-array ,(layout-length wrapper) - ,@(when before-method-p - '(:initial-element +slot-unbound+))))) + ,@(when early-unbound-markers-p + '(:initial-element +slot-unbound+))))) (setf (std-instance-wrapper .instance.) ,wrapper) (setf (std-instance-slots .instance.) .slots.) ,body @@ -655,44 +679,73 @@ ;;; functions look like (LAMBDA (ARGS NEXT-METHODS) ...). We could ;;; call fast method functions directly here, but benchmarks show that ;;; there's no speed to gain, so lets avoid the hair here. -(defmacro invoke-method (method args) - `(funcall ,(method-function method) ,args ())) +(defmacro invoke-method (method args &optional next-methods) + `(funcall ,(the function (method-function method)) ,args ,next-methods)) ;;; Return a form that is sort of an effective method comprising all ;;; calls to INITIALIZE-INSTANCE and SHARED-INITIALIZE that would ;;; normally have taken place when calling MAKE-INSTANCE. -(defun fake-initialization-emf (ctor ii-methods si-methods) +(defun fake-initialization-emf + (ctor ii-methods si-methods setf-svuc-slots sbuc-slots) (multiple-value-bind (ii-around ii-before ii-primary ii-after) (standard-sort-methods ii-methods) (declare (ignore ii-primary)) (multiple-value-bind (si-around si-before si-primary si-after) (standard-sort-methods si-methods) (declare (ignore si-primary)) - (aver (and (null ii-around) (null si-around))) - (let ((initargs (ctor-initargs ctor))) - (multiple-value-bind (locations names bindings vars defaulting-initargs body) - (slot-init-forms ctor (or ii-before si-before)) + (aver (null si-around)) + (let ((initargs (ctor-initargs ctor)) + ;; :BEFORE and :AROUND initialization methods, and SETF SVUC and + ;; SBUC methods can cause slots to be accessed before the we have + ;; touched them here, which requires the instance-vector to be + ;; initialized with +SLOT-UNBOUND+ to start with. + (early-unbound-markers-p (or ii-before si-before ii-around + setf-svuc-slots sbuc-slots))) + (multiple-value-bind + (locations names bindings vars defaulting-initargs body) + (slot-init-forms ctor + early-unbound-markers-p + setf-svuc-slots sbuc-slots) (values locations names `(let ,bindings (declare (ignorable ,@vars)) - (let (,@(when (or ii-before ii-after) - `((.ii-args. - (list .instance. ,@(quote-plist-keys initargs) ,@defaulting-initargs)))) - ,@(when (or si-before si-after) - `((.si-args. - (list .instance. t ,@(quote-plist-keys initargs) ,@defaulting-initargs))))) - ,@(loop for method in ii-before - collect `(invoke-method ,method .ii-args.)) - ,@(loop for method in si-before - collect `(invoke-method ,method .si-args.)) - ,@body - ,@(loop for method in si-after - collect `(invoke-method ,method .si-args.)) - ,@(loop for method in ii-after - collect `(invoke-method ,method .ii-args.)))) - (or ii-before si-before))))))) + (flet ((initialize-it (.ii-args. .next-methods.) + ;; This has all the :BEFORE and :AFTER methods, + ;; and BODY does what primary SI method would do. + (declare (ignore .next-methods.)) + (let* ((.instance. (car .ii-args.)) + ,@(when (or si-before si-after) + `((.si-args. + (list* .instance. t (cdr .ii-args.)))))) + ,@(loop for method in ii-before + collect `(invoke-method ,method .ii-args.)) + ,@(loop for method in si-before + collect `(invoke-method ,method .si-args.)) + ,@body + ,@(loop for method in si-after + collect `(invoke-method ,method .si-args.)) + ,@(loop for method in ii-after + collect `(invoke-method ,method .ii-args.)) + .instance.))) + (declare (dynamic-extent #'initialize-it)) + (let ((.ii-args. + ,@(if (or ii-before ii-after ii-around si-before si-after) + `((list .instance. ,@(quote-plist-keys initargs) + ,@defaulting-initargs)) + `((list .instance.))))) + ,(if ii-around + ;; If there are :AROUND methods, call them first -- they get + ;; the normal chaining, with #'INITIALIZE-IT standing in for + ;; the rest. + `(let ((.next-methods. + (list ,@(cdr ii-around) #'initialize-it))) + (declare (dynamic-extent .next-methods.)) + (invoke-method ,(car ii-around) .ii-args. .next-methods.)) + ;; The simple case. + `(initialize-it .ii-args. nil))))) + early-unbound-markers-p)))))) ;;; Return four values from APPLICABLE-METHODS: around methods, before ;;; methods, the applicable primary method, and applicable after @@ -723,22 +776,21 @@ (the ,type (progn ,@body))) `(progn ,@body))) -;;; Return as multiple values bindings for default initialization -;;; arguments, variable names, defaulting initargs and a body for -;;; initializing instance and class slots of an object costructed by -;;; CTOR. The variable .SLOTS. is assumed to bound to the instance's -;;; slot vector. BEFORE-METHOD-P T means before-methods will be -;;; called, which means that 1) other code will initialize instance -;;; slots to +SLOT-UNBOUND+ before the before-methods are run, and -;;; that we have to check if these before-methods have set slots. -(defun slot-init-forms (ctor before-method-p) +;;; Return as multiple values bindings for default initialization arguments, +;;; variable names, defaulting initargs and a body for initializing instance +;;; and class slots of an object costructed by CTOR. The variable .SLOTS. is +;;; assumed to bound to the instance's slot vector. EARLY-UNBOUND-MARKERS-P +;;; means other code will initialize instance slots to +SLOT-UNBOUND+, and we +;;; have to check if something has already set slots before we initialize +;;; them. +(defun slot-init-forms (ctor early-unbound-markers-p setf-svuc-slots sbuc-slots) (let* ((class (ctor-class ctor)) (initargs (ctor-initargs ctor)) (initkeys (plist-keys initargs)) (safe-p (ctor-safe-p ctor)) + (wrapper (class-wrapper class)) (slot-vector - (make-array (layout-length (class-wrapper class)) - :initial-element nil)) + (make-array (layout-length wrapper) :initial-element nil)) (class-inits ()) (default-inits ()) (defaulting-initargs ()) @@ -755,33 +807,28 @@ ((integerp location) (not (null (aref slot-vector location)))) (t (bug "Weird location in ~S" 'slot-init-forms)))) - (class-init (location kind val type) + (class-init (location kind val type slotd) (aver (consp location)) (unless (initializedp location) - (push (list location kind val type) class-inits))) - (instance-init (location kind val type) + (push (list location kind val type slotd) class-inits))) + (instance-init (location kind val type slotd) (aver (integerp location)) (unless (initializedp location) - (setf (aref slot-vector location) (list kind val type)))) + (setf (aref slot-vector location) + (list kind val type slotd)))) (default-init-var-name (i) - (let ((ps #(.d0. .d1. .d2. .d3. .d4. .d5.))) - (if (array-in-bounds-p ps i) - (aref ps i) - (format-symbol *pcl-package* ".D~D." i)))) + (format-symbol *pcl-package* ".D~D." i)) (location-var-name (i) - (let ((ls #(.l0. .l1. .l2. .l3. .l4. .l5.))) - (if (array-in-bounds-p ls i) - (aref ls i) - (format-symbol *pcl-package* ".L~D." i))))) + (format-symbol *pcl-package* ".L~D." i))) ;; Loop over supplied initargs and values and record which ;; instance and class slots they initialize. (loop for (key value) on initargs by #'cddr as kind = (if (constantp value) 'constant 'param) as locations = (initarg-locations key) - do (loop for (location . type) in locations + do (loop for (location type slotd) in locations do (if (consp location) - (class-init location kind value type) - (instance-init location kind value type)))) + (class-init location kind value type slotd) + (instance-init location kind value type slotd)))) ;; Loop over default initargs of the class, recording ;; initializations of slots that have not been initialized ;; above. Default initargs which are not in the supplied @@ -803,10 +850,10 @@ (let ((init-var (default-init-var-name i))) (setq init init-var) (push (cons init-var initfn) default-inits))) - (loop for (location . type) in (initarg-locations key) + (loop for (location type slotd) in (initarg-locations key) do (if (consp location) - (class-init location kind init type) - (instance-init location kind init type))))) + (class-init location kind init type slotd) + (instance-init location kind init type slotd))))) ;; Loop over all slots of the class, filling in the rest from ;; slot initforms. (loop for slotd in (class-slots class) @@ -819,66 +866,79 @@ (null initfn) (initializedp location)) (if (constantp initform) - (instance-init location 'initform initform type) - (instance-init location 'initform/initfn initfn type)))) + (instance-init location 'initform initform type slotd) + (instance-init location + 'initform/initfn initfn type slotd)))) ;; Generate the forms for initializing instance and class slots. (let ((instance-init-forms (loop for slot-entry across slot-vector and i from 0 - as (kind value type) = slot-entry collect - (ecase kind - ((nil) - (unless before-method-p - `(setf (clos-slots-ref .slots. ,i) +slot-unbound+))) - ((param var) - `(setf (clos-slots-ref .slots. ,i) - (with-type-checked (,type ,safe-p) - ,value))) - (initfn - `(setf (clos-slots-ref .slots. ,i) - (with-type-checked (,type ,safe-p) - (funcall ,value)))) - (initform/initfn - (if before-method-p - `(when (eq (clos-slots-ref .slots. ,i) - +slot-unbound+) - (setf (clos-slots-ref .slots. ,i) - (with-type-checked (,type ,safe-p) - (funcall ,value)))) - `(setf (clos-slots-ref .slots. ,i) - (with-type-checked (,type ,safe-p) - (funcall ,value))))) - (initform - (if before-method-p - `(when (eq (clos-slots-ref .slots. ,i) - +slot-unbound+) - (setf (clos-slots-ref .slots. ,i) - (with-type-checked (,type ,safe-p) - ',(constant-form-value value)))) - `(setf (clos-slots-ref .slots. ,i) - (with-type-checked (,type ,safe-p) - ',(constant-form-value value))))) - (constant - `(setf (clos-slots-ref .slots. ,i) - (with-type-checked (,type ,safe-p) - ',(constant-form-value value)))))))) + as (kind value type slotd) = slot-entry + collect + (flet ((setf-form (value-form) + (if (member slotd setf-svuc-slots :test #'eq) + `(setf (slot-value-using-class + ,class .instance. ,slotd) + ,value-form) + `(setf (clos-slots-ref .slots. ,i) + (with-type-checked (,type ,safe-p) + ,value-form)))) + (not-boundp-form () + (if (member slotd sbuc-slots :test #'eq) + `(not (slot-boundp-using-class + ,class .instance. ,slotd)) + `(eq (clos-slots-ref .slots. ,i) + +slot-unbound+)))) + (ecase kind + ((nil) + (unless early-unbound-markers-p + `(setf (clos-slots-ref .slots. ,i) + +slot-unbound+))) + ((param var) + (setf-form value)) + (initfn + (setf-form `(funcall ,value))) + (initform/initfn + (if early-unbound-markers-p + `(when ,(not-boundp-form) + ,(setf-form `(funcall ,value))) + (setf-form `(funcall ,value)))) + (initform + (if early-unbound-markers-p + `(when ,(not-boundp-form) + ,(setf-form `',(constant-form-value value))) + (setf-form `',(constant-form-value value)))) + (constant + (setf-form `',(constant-form-value value)))))))) ;; we are not allowed to modify QUOTEd locations, so we can't ;; generate code like (setf (cdr ',location) arg). Instead, ;; we have to do (setf (cdr .L0.) arg) and arrange for .L0. to ;; be bound to the location. (multiple-value-bind (names locations class-init-forms) - (loop for (location kind value type) in class-inits - for i upfrom 0 - for name = (location-var-name i) - collect name into names - collect location into locations - collect `(setf (cdr ,name) - (with-type-checked (,type ,safe-p) - ,(case kind - (constant `',(constant-form-value value)) - ((param var) `,value) - (initfn `(funcall ,value))))) + (loop with names + with locations + with i = -1 + for (location kind value type slotd) in class-inits + for init-form + = (case kind + (constant `',(constant-form-value value)) + ((param var) `,value) + (initfn `(funcall ,value))) + when (member slotd setf-svuc-slots :test #'eq) + collect `(setf (slot-value-using-class + ,class .instance. ,slotd) + ,init-form) + into class-init-forms + else collect + (let ((name (location-var-name (incf i)))) + (push name names) + (push location locations) + `(setf (cdr ,name) + (with-type-checked (,type ,safe-p) + ,init-form))) into class-init-forms - finally (return (values names locations class-init-forms))) + finally (return (values (nreverse names) + (nreverse locations) + class-init-forms))) (multiple-value-bind (vars bindings) (loop for (var . initfn) in (nreverse default-inits) collect var into vars @@ -899,8 +959,9 @@ for key in initkeys collect (loop for slot in slots if (memq key (slot-definition-initargs slot)) - collect (cons (slot-definition-location slot) - (slot-definition-type slot)) + collect (list (slot-definition-location slot) + (slot-definition-type slot) + slot) into locations else collect slot into remaining-slots