(!begin-collecting-cold-init-forms)
\f
-;;; Just call %TYPEP.
-;;;
-;;; Note that when cross-compiling, SB!XC:TYPEP is interpreted as
-;;; a test that the host Lisp object OBJECT translates to a target SBCL
-;;; type TYPE. (This behavior is needed e.g. to test for the validity of
-;;; numeric subtype bounds read when cross-compiling.)
-(defun typep (object type)
- #!+sb-doc
- "Return T iff OBJECT is of type TYPE."
- (%typep object type))
-
;;; If TYPE is a type that we can do a compile-time test on, then
;;; return whether the object is of that type as the first value and
;;; second value true. Otherwise return NIL, NIL.
(declare (type ctype type))
(etypecase type
((or numeric-type
- named-type
- member-type
- array-type
- sb!xc:built-in-class
- cons-type)
+ named-type
+ member-type
+ array-type
+ character-set-type
+ built-in-classoid
+ cons-type)
(values (%typep obj type) t))
- (sb!xc:class
- (if (if (csubtypep type (specifier-type 'funcallable-instance))
- (funcallable-instance-p obj)
- (typep obj 'instance))
- (if (eq (class-layout type)
- (info :type :compiler-layout (sb!xc:class-name type)))
- (values (sb!xc:typep obj type) t)
- (values nil nil))
- (values nil t)))
+ (classoid
+ (if (if (csubtypep type (specifier-type 'function))
+ (funcallable-instance-p obj)
+ (%instancep obj))
+ (if (eq (classoid-layout type)
+ (info :type :compiler-layout (classoid-name type)))
+ (values (sb!xc:typep obj type) t)
+ (values nil nil))
+ (values nil t)))
(compound-type
(funcall (etypecase type
- (intersection-type #'every/type)
- (union-type #'any/type))
- #'ctypep
- obj
- (compound-type-types type)))
+ (intersection-type #'every/type)
+ (union-type #'any/type))
+ #'ctypep
+ obj
+ (compound-type-types type)))
(fun-type
(values (functionp obj) t))
(unknown-type
(values nil nil))
(alien-type-type
(values (alien-typep obj (alien-type-type-alien-type type)) t))
+ (negation-type
+ (multiple-value-bind (res win)
+ (ctypep obj (negation-type-type type))
+ (if win
+ (values (not res) t)
+ (values nil nil))))
(hairy-type
;; Now the tricky stuff.
(let* ((hairy-spec (hairy-type-specifier type))
- (symbol (if (consp hairy-spec) (car hairy-spec) hairy-spec)))
+ (symbol (if (consp hairy-spec) (car hairy-spec) hairy-spec)))
(ecase symbol
- (and
- (if (atom hairy-spec)
- (values t t)
- (dolist (spec (cdr hairy-spec) (values t t))
- (multiple-value-bind (res win)
- (ctypep obj (specifier-type spec))
- (unless win (return (values nil nil)))
- (unless res (return (values nil t)))))))
- (not
- (multiple-value-bind (res win)
- (ctypep obj (specifier-type (cadr hairy-spec)))
- (if win
- (values (not res) t)
- (values nil nil))))
- (satisfies
- (let ((predicate-name (second hairy-spec)))
- (declare (type symbol predicate-name)) ; by ANSI spec of SATISFIES
- (if (fboundp predicate-name)
- (values (not (null (funcall predicate-name obj))) t)
- (values nil nil)))))))))
+ (and
+ (if (atom hairy-spec)
+ (values t t)
+ (dolist (spec (cdr hairy-spec) (values t t))
+ (multiple-value-bind (res win)
+ (ctypep obj (specifier-type spec))
+ (unless win (return (values nil nil)))
+ (unless res (return (values nil t)))))))
+ (not
+ (multiple-value-bind (res win)
+ (ctypep obj (specifier-type (cadr hairy-spec)))
+ (if win
+ (values (not res) t)
+ (values nil nil))))
+ (satisfies
+ (let ((predicate-name (second hairy-spec)))
+ (declare (type symbol predicate-name)) ; by ANSI spec of SATISFIES
+ (if (fboundp predicate-name)
+ (let* (;; "Is OBJ of the SATISFIES type?" represented
+ ;; as a generalized boolean.
+ ;;
+ ;; (Why IGNORE-ERRORS? This code is used to try to
+ ;; check type relationships at compile time.
+ ;; Passing only-slightly-twisted types like
+ ;; (AND INTEGER (SATISFIES ODDP)) into the
+ ;; rather-significantly-twisted type dispatch
+ ;; system can easily give rise to oddities like
+ ;; calling predicates like ODDP on values they
+ ;; don't like. (E.g. on OBJ=#\NEWLINE when the
+ ;; above type is tested for TYPE= against
+ ;; STANDARD-CHAR, represented as a
+ ;; MEMBER-TYPE.) In such cases, NIL seems to be
+ ;; an appropriate answer to "is OBJ of the
+ ;; SATISFIES type?")
+ (gbool (ignore-errors (funcall predicate-name obj)))
+ ;; RAW coerced to a pure BOOLEAN value
+ (bool (not (not gbool))))
+ (values bool t))
+ (values nil nil)))))))))
\f
;;; Return the layout for an object. This is the basic operation for
;;; finding out the "type" of an object, and is used for generic
#!-sb-fluid (declaim (inline layout-of))
(defun layout-of (x)
(declare (optimize (speed 3) (safety 0)))
- (cond ((typep x 'instance) (%instance-layout x))
- ((funcallable-instance-p x) (%funcallable-instance-layout x))
- ((null x)
- ;; Note: was #.((CLASS-LAYOUT (SB!XC:FIND-CLASS 'NULL))).
- ;; I (WHN 19990209) replaced this with an expression evaluated at
- ;; run time in order to make it easier to build the cross-compiler.
- ;; If it doesn't work, something else will be needed..
- (locally
- ;; KLUDGE: In order to really make this run at run time
- ;; (instead of doing some weird broken thing at cold load
- ;; time), we need to suppress a DEFTRANSFORM.. -- WHN 19991004
- (declare (notinline sb!xc:find-class))
- (class-layout (sb!xc:find-class 'null))))
- (t (svref *built-in-class-codes* (get-type x)))))
+ (cond ((%instancep x) (%instance-layout x))
+ ((funcallable-instance-p x) (%funcallable-instance-layout x))
+ ((null x)
+ ;; Note: was #.((CLASS-LAYOUT (SB!XC:FIND-CLASS 'NULL))).
+ ;; I (WHN 19990209) replaced this with an expression evaluated at
+ ;; run time in order to make it easier to build the cross-compiler.
+ ;;
+ ;; KLUDGE: Since there's a DEFTRANSFORM for FIND-CLASSOID on
+ ;; constant names which creates non-cold-loadable code, we
+ ;; can't just use (CLASSOID-LAYOUT (FIND-CLASSOID 'NULL))
+ ;; here. The original (WHN 19991004) solution was to locally
+ ;; notinline FIND-CLASSOID. However, the full call to
+ ;; FIND-CLASSOID caused suboptimal register allocation in PCL
+ ;; dfuns. So instead we now use a special variable which is
+ ;; initialized during cold init. -- JES, 2006-07-04
+ *null-classoid-layout*)
+ (t (svref *built-in-class-codes* (widetag-of x)))))
-#!-sb-fluid (declaim (inline sb!xc:class-of))
-(defun sb!xc:class-of (object)
+#!-sb-fluid (declaim (inline classoid-of))
+(defun classoid-of (object)
#!+sb-doc
"Return the class of the supplied object, which may be any Lisp object, not
just a CLOS STANDARD-OBJECT."
- (layout-class (layout-of object)))
-
-;;; Pull the type specifier out of a function object.
-(defun extract-fun-type (fun)
- (specifier-type (%simple-fun-type (%closure-fun fun))))
+ (layout-classoid (layout-of object)))
\f
;;;; miscellaneous interfaces
;;; Clear memoization of all type system operations that can be
;;; altered by type definition/redefinition.
+;;;
+;;; FIXME: This should be autogenerated.
(defun clear-type-caches ()
+ (declare (special *type-system-initialized*))
(when *type-system-initialized*
(dolist (sym '(values-specifier-type-cache-clear
- values-type-union-cache-clear
- type-union2-cache-clear
- values-subtypep-cache-clear
- csubtypep-cache-clear
- type-intersection2-cache-clear
- values-type-intersection-cache-clear))
- (funcall (symbol-function sym))))
+ values-type-union-cache-clear
+ type-union2-cache-clear
+ values-subtypep-cache-clear
+ csubtypep-cache-clear
+ type-intersection2-cache-clear
+ values-type-intersection-cache-clear
+ type=-cache-clear))
+ (funcall (the function (symbol-function sym)))))
(values))
-;;; Like TYPE-OF, only we return a CTYPE structure instead of a type
-;;; specifier, and we try to return the type most useful for type
-;;; checking, rather than trying to come up with the one that the user
-;;; might find most informative.
+;;; This is like TYPE-OF, only we return a CTYPE structure instead of
+;;; a type specifier, and we try to return the type most useful for
+;;; type checking, rather than trying to come up with the one that the
+;;; user might find most informative.
(declaim (ftype (function (t) ctype) ctype-of))
(defun-cached (ctype-of
- :hash-function (lambda (x) (logand (sxhash x) #x1FF))
- :hash-bits 9
- :init-wrapper !cold-init-forms)
- ((x eq))
+ :hash-function (lambda (x) (logand (sxhash x) #x1FF))
+ :hash-bits 9
+ :init-wrapper !cold-init-forms)
+ ((x eq))
(typecase x
(function
(if (funcallable-instance-p x)
- (sb!xc:class-of x)
- (extract-fun-type x)))
+ (classoid-of x)
+ (specifier-type (sb!impl::%fun-type x))))
(symbol
(make-member-type :members (list x)))
(number
(array
(let ((etype (specifier-type (array-element-type x))))
(make-array-type :dimensions (array-dimensions x)
- :complexp (not (typep x 'simple-array))
- :element-type etype
- :specialized-element-type etype)))
+ :complexp (not (typep x 'simple-array))
+ :element-type etype
+ :specialized-element-type etype)))
(cons
(make-cons-type *universal-type* *universal-type*))
+ (character
+ (specifier-type 'character))
(t
- (sb!xc:class-of x))))
-
-;;; Clear this cache on GC so that we don't hold onto too much garbage.
-(pushnew 'ctype-of-cache-clear *before-gc-hooks*)
+ (classoid-of x))))
\f
(!defun-from-collected-cold-init-forms !target-type-cold-init)
projects / sbcl.git / blobdiff