;;;
;;; NAME-attributes attribute-name*
;;; Return a set of the named attributes.
-;;;
-;;; KLUDGE: This is expanded out twice, by cut-and-paste, in a
-;;; (DEF!MACRO FOO (..) .. CL:GET-SETF-EXPANSION ..)
-;;; #+SB-XC-HOST
-;;; (SB!XC:DEFMACRO FOO (..) .. SB!XC:GET-SETF-EXPANSION ..)
-;;; arrangement, in order to get it to work in cross-compilation. This
-;;; duplication should be removed, perhaps by rewriting the macro in a
-;;; more cross-compiler-friendly way, or perhaps just by using some
-;;; (MACROLET ((FROB ..)) .. FROB .. FROB) form, but I don't want to
-;;; do it now, because the system isn't running yet, so it'd be too
-;;; hard to check that my changes were correct -- WHN 19990806
-(def!macro def-boolean-attribute (name &rest attribute-names)
-
- (let ((translations-name (symbolicate "*" name "-ATTRIBUTE-TRANSLATIONS*"))
- (test-name (symbolicate name "-ATTRIBUTEP")))
- (collect ((alist))
- (do ((mask 1 (ash mask 1))
- (names attribute-names (cdr names)))
- ((null names))
- (alist (cons (car names) mask)))
-
- `(progn
-
- (eval-when (:compile-toplevel :load-toplevel :execute)
- (defparameter ,translations-name ',(alist)))
-
- (defmacro ,test-name (attributes &rest attribute-names)
- "Automagically generated boolean attribute test function. See
- Def-Boolean-Attribute."
- `(logtest ,(compute-attribute-mask attribute-names
- ,translations-name)
- (the attributes ,attributes)))
-
- (define-setf-expander ,test-name (place &rest attributes
- &environment env)
- "Automagically generated boolean attribute setter. See
- Def-Boolean-Attribute."
- #-sb-xc-host (declare (type sb!c::lexenv env))
- ;; FIXME: It would be better if &ENVIRONMENT arguments
- ;; were automatically declared to have type LEXENV by the
- ;; hairy-argument-handling code.
- (multiple-value-bind (temps values stores set get)
- (get-setf-expansion place env)
- (when (cdr stores)
- (error "multiple store variables for ~S" place))
- (let ((newval (gensym))
- (n-place (gensym))
- (mask (compute-attribute-mask attributes
- ,translations-name)))
- (values `(,@temps ,n-place)
- `(,@values ,get)
- `(,newval)
- `(let ((,(first stores)
- (if ,newval
- (logior ,n-place ,mask)
- (logand ,n-place ,(lognot mask)))))
- ,set
- ,newval)
- `(,',test-name ,n-place ,@attributes)))))
-
- (defmacro ,(symbolicate name "-ATTRIBUTES") (&rest attribute-names)
- "Automagically generated boolean attribute creation function. See
- Def-Boolean-Attribute."
- (compute-attribute-mask attribute-names ,translations-name))))))
-;;; #+SB-XC-HOST SB!XC:DEFMACRO version is in late-macros.lisp. -- WHN 19990806
+#+sb-xc-host
+(progn
+ (def!macro !def-boolean-attribute (name &rest attribute-names)
+
+ (let ((translations-name (symbolicate "*" name "-ATTRIBUTE-TRANSLATIONS*"))
+ (test-name (symbolicate name "-ATTRIBUTEP")))
+ (collect ((alist))
+ (do ((mask 1 (ash mask 1))
+ (names attribute-names (cdr names)))
+ ((null names))
+ (alist (cons (car names) mask)))
+ `(progn
+ (eval-when (:compile-toplevel :load-toplevel :execute)
+ (defparameter ,translations-name ',(alist)))
+ (defmacro ,(symbolicate name "-ATTRIBUTES") (&rest attribute-names)
+ "Automagically generated boolean attribute creation function.
+ See !DEF-BOOLEAN-ATTRIBUTE."
+ (compute-attribute-mask attribute-names ,translations-name))
+ (defmacro ,test-name (attributes &rest attribute-names)
+ "Automagically generated boolean attribute test function.
+ See !DEF-BOOLEAN-ATTRIBUTE."
+ `(logtest ,(compute-attribute-mask attribute-names
+ ,translations-name)
+ (the attributes ,attributes)))
+ ;; This definition transforms strangely under UNCROSS, in a
+ ;; way that DEF!MACRO doesn't understand, so we delegate it
+ ;; to a submacro then define the submacro differently when
+ ;; building the xc and when building the target compiler.
+ (!def-boolean-attribute-setter ,test-name
+ ,translations-name
+ ,@attribute-names)))))
+
+ ;; It seems to be difficult to express in DEF!MACRO machinery what
+ ;; to do with target-vs-host GET-SETF-EXPANSION in here, so we just
+ ;; hack it by hand, passing a different GET-SETF-EXPANSION-FUN-NAME
+ ;; in the host DEFMACRO and target DEFMACRO-MUNDANELY cases.
+ (defun guts-of-!def-boolean-attribute-setter (test-name
+ translations-name
+ attribute-names
+ get-setf-expansion-fun-name)
+ `(define-setf-expander ,test-name (place &rest attributes
+ &environment env)
+ "Automagically generated boolean attribute setter. See
+ !DEF-BOOLEAN-ATTRIBUTE."
+ #-sb-xc-host (declare (type sb!c::lexenv env))
+ ;; FIXME: It would be better if &ENVIRONMENT arguments were
+ ;; automatically declared to have type LEXENV by the
+ ;; hairy-argument-handling code.
+ (multiple-value-bind (temps values stores set get)
+ (,get-setf-expansion-fun-name place env)
+ (when (cdr stores)
+ (error "multiple store variables for ~S" place))
+ (let ((newval (gensym))
+ (n-place (gensym))
+ (mask (compute-attribute-mask attributes ,translations-name)))
+ (values `(,@temps ,n-place)
+ `(,@values ,get)
+ `(,newval)
+ `(let ((,(first stores)
+ (if ,newval
+ (logior ,n-place ,mask)
+ (logand ,n-place ,(lognot mask)))))
+ ,set
+ ,newval)
+ `(,',test-name ,n-place ,@attributes))))))
+ ;; We define the host version here, and the just-like-it-but-different
+ ;; target version later, after DEFMACRO-MUNDANELY has been defined.
+ (defmacro !def-boolean-attribute-setter (test-name
+ translations-name
+ &rest attribute-names)
+ (guts-of-!def-boolean-attribute-setter test-name
+ translations-name
+ attribute-names
+ 'get-setf-expansion)))
;;; And now for some gratuitous pseudo-abstraction...
;;;
;;; ATTRIBUTES-INTERSECTION
;;; Return the intersection of all the sets of boolean attributes which
;;; are its arguments.
-;;; ATTRIBUTES=
-;;; True if the attributes present in Attr1 are identical to
-;;; those in Attr2.
+;;; ATTRIBUTES
+;;; True if the attributes present in ATTR1 are identical to
+;;; those in ATTR2.
(defmacro attributes-union (&rest attributes)
`(the attributes
(logior ,@(mapcar (lambda (x) `(the attributes ,x)) attributes))))
;;; type specifier for the function by wrapping (FUNCTION ...) around
;;; the ARG-TYPES and RESULT-TYPE. ATTRIBUTES is an unevaluated list
;;; of boolean attributes of the function. See their description in
-;;; (DEF-BOOLEAN-ATTRIBUTE IR1). NAME may also be a list of names, in
+;;; (!DEF-BOOLEAN-ATTRIBUTE IR1). NAME may also be a list of names, in
;;; which case the same information is given to all the names. The
;;; keywords specify the initial values for various optimizers that
;;; the function might have.
projects / sbcl.git / blobdiff