X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Ftarget-misc.lisp;h=04b1012b8999ea4fcb6bc090be5b98e75e509125;hb=82cd148d729c241e79c8df04b700beec1b7c55de;hp=a021148b4ace68ad0b187667c6526e64fff84326;hpb=e8b69b1dd5564a4237b1bdc1060820c3b820cde2;p=sbcl.git diff --git a/src/code/target-misc.lisp b/src/code/target-misc.lisp index a021148..04b1012 100644 --- a/src/code/target-misc.lisp +++ b/src/code/target-misc.lisp @@ -13,104 +13,83 @@ ;;;; files for more information. (in-package "SB!IMPL") - -;;;; function names and documentation - -;;;; the ANSI interface to function names (and to other stuff too) -(defun function-lambda-expression (fun) - "Return (VALUES DEFINING-LAMBDA-EXPRESSION CLOSURE-P NAME), where - DEFINING-LAMBDA-EXPRESSION is NIL if unknown, or a suitable argument - to COMPILE otherwise, CLOSURE-P is non-NIL if the function's definition - might have been enclosed in some non-null lexical environment, and - NAME is some name (for debugging only) or NIL if there is no name." - (declare (type function fun)) - (let* ((fun (%simple-fun-self fun)) - (name (%fun-name fun)) - (code (sb!di::fun-code-header fun)) - (info (sb!kernel:%code-debug-info code))) - (if info - (let ((source (first (sb!c::compiled-debug-info-source info)))) - (cond ((and (eq (sb!c::debug-source-from source) :lisp) - (eq (sb!c::debug-source-info source) fun)) - (values (second (svref (sb!c::debug-source-name source) 0)) - nil - name)) - ((stringp name) - (values nil t name)) - (t - (let ((exp (fun-name-inline-expansion name))) - (if exp - (values exp nil name) - (values nil t name)))))) - (values nil t name)))) +;;;; Generalizing over SIMPLE-FUN, CLOSURE, and FUNCALLABLE-INSTANCEs + +;;; Underlying SIMPLE-FUN +(defun %fun-fun (function) + (declare (function function)) + (typecase function + (simple-fun + function) + (closure + (%closure-fun function)) + (funcallable-instance + (%fun-fun (funcallable-instance-fun function))))) + +(defun %fun-lambda-list (function) + (typecase function + #!+sb-eval + (sb!eval:interpreted-function + (sb!eval:interpreted-function-debug-lambda-list function)) + (t + (%simple-fun-arglist (%fun-fun function))))) + +(defun (setf %fun-lambda-list) (new-value function) + (typecase function + #!+sb-eval + (sb!eval:interpreted-function + (setf (sb!eval:interpreted-function-debug-lambda-list function) new-value)) + ;; FIXME: Eliding general funcallable-instances for now. + ((or simple-fun closure) + (setf (%simple-fun-arglist (%fun-fun function)) new-value))) + new-value) + +(defun %fun-type (function) + (%simple-fun-type (%fun-fun function))) ;;; a SETFable function to return the associated debug name for FUN ;;; (i.e., the third value returned from CL:FUNCTION-LAMBDA-EXPRESSION), ;;; or NIL if there's none -(defun %fun-name (fun) - (case (widetag-of fun) - (#.sb!vm:closure-header-widetag - (%simple-fun-name (%closure-fun fun))) - ((#.sb!vm:simple-fun-header-widetag - #.sb!vm:closure-fun-header-widetag) - ;; KLUDGE: The pun that %SIMPLE-FUN-NAME is used for closure - ;; functions is left over from CMU CL (modulo various renaming - ;; that's gone on since the fork). - (%simple-fun-name fun)) - (#.sb!vm:funcallable-instance-header-widetag - (%simple-fun-name - (funcallable-instance-fun fun))))) - -(defun (setf %fun-name) (new-name fun) - (aver nil) ; since this is unsafe 'til bug 137 is fixed - (let ((widetag (widetag-of fun))) - (case widetag - ((#.sb!vm:simple-fun-header-widetag - #.sb!vm:closure-fun-header-widetag) - ;; KLUDGE: The pun that %SIMPLE-FUN-NAME is used for closure - ;; functions is left over from CMU CL (modulo various renaming - ;; that's gone on since the fork). - (setf (%simple-fun-name fun) new-name)) - (#.sb!vm:closure-header-widetag - ;; FIXME: It'd be nice to be able to set %FUN-NAME here on - ;; per-closure basis. Instead, we are still using the CMU CL - ;; approach of closures being named after their closure - ;; function, which doesn't work right e.g. for structure - ;; accessors, and might not be quite right for DEFUN - ;; in a non-null lexical environment either. - ;; When/if weak hash tables become supported - ;; again, it'll become easy to fix this, but for now there - ;; seems to be no easy way (short of the ugly way of adding a - ;; slot to every single closure header), so we don't. - ;; - ;; Meanwhile, users might encounter this problem by doing DEFUN - ;; in a non-null lexical environment, so we try to give a - ;; reasonably meaningful user-level "error" message (but only - ;; as a warning because this is optional debugging - ;; functionality anyway, not some hard ANSI requirement). - (warn "can't set name for closure, leaving name unchanged")) - (t - ;; The other function subtype names are also un-settable - ;; but this problem seems less likely to be tickled by - ;; user-level code, so we can give a implementor-level - ;; "error" (warning) message. - (warn "can't set function name ((~S function)=~S), leaving it unchanged" - 'widetag-of widetag)))) - new-name) - -(defun %fun-doc (x) - ;; FIXME: This business of going through %FUN-NAME and then globaldb - ;; is the way CMU CL did it, but it doesn't really seem right. - ;; When/if weak hash tables become supported again, using a weak - ;; hash table to maintain the object/documentation association would - ;; probably be better. - (let ((name (%fun-name x))) - (when (and name (typep name '(or symbol cons))) - (values (info :function :documentation name))))) +(defun %fun-name (function) + (typecase function + #!+sb-eval + (sb!eval:interpreted-function + (sb!eval:interpreted-function-debug-name function)) + (t + (%simple-fun-name (%fun-fun function))))) + +(defun (setf %fun-name) (new-value function) + (typecase function + #!+sb-eval + (sb!eval:interpreted-function + (setf (sb!eval:interpreted-function-debug-name function) new-value)) + ;; FIXME: Eliding general funcallable-instances for now. + ((or simple-fun closure) + (setf (%simple-fun-name (%fun-fun function)) new-value))) + new-value) + +(defun %fun-doc (function) + (typecase function + #!+sb-eval + (sb!eval:interpreted-function + (sb!eval:interpreted-function-documentation function)) + (t + (%simple-fun-doc (%fun-fun function))))) + +(defun (setf %fun-doc) (new-value function) + (declare (type (or null string) new-value)) + (typecase function + #!+sb-eval + (sb!eval:interpreted-function + (setf (sb!eval:interpreted-function-documentation function) new-value)) + ((or simple-fun closure) + (setf (%simple-fun-doc (%fun-fun function)) new-value))) + new-value) ;;; various environment inquiries -(defvar *features* '#.sb-cold:*shebang-features* +(defvar *features* + '#.(sort (copy-list sb-cold:*shebang-features*) #'string<) #!+sb-doc "a list of symbols that describe features provided by the implementation") @@ -118,7 +97,18 @@ (defun machine-instance () #!+sb-doc "Return a string giving the name of the local machine." - (sb!unix:unix-gethostname)) + #!+win32 (sb!win32::get-computer-name) + #!-win32 (sb!unix:unix-gethostname)) + +(defvar *machine-version*) + +(defun machine-version () + #!+sb-doc + "Return a string describing the version of the computer hardware we +are running on, or NIL if we can't find any useful information." + (unless (boundp '*machine-version*) + (setf *machine-version* (get-machine-version))) + *machine-version*) ;;; FIXME: Don't forget to set these in a sample site-init file. ;;; FIXME: Perhaps the functions could be SETFable instead of having the @@ -140,6 +130,24 @@ "Return a string with the long form of the site name, or NIL if not known." *long-site-name*) +;;;; ED +(defvar *ed-functions* nil + "See function documentation for ED.") + +(defun ed (&optional x) + "Starts the editor (on a file or a function if named). Functions +from the list *ED-FUNCTIONS* are called in order with X as an argument +until one of them returns non-NIL; these functions are responsible for +signalling a FILE-ERROR to indicate failure to perform an operation on +the file system." + (dolist (fun *ed-functions* + (error 'extension-failure + :format-control "Don't know how to ~S ~A" + :format-arguments (list 'ed x) + :references (list '(:sbcl :variable *ed-functions*)))) + (when (funcall fun x) + (return t)))) + ;;;; dribble stuff ;;; Each time we start dribbling to a new stream, we put it in @@ -163,34 +171,47 @@ record of further I/O to that file. Without an argument, it closes the dribble file, and quits logging." (cond (pathname - (let* ((new-dribble-stream - (open pathname - :direction :output - :if-exists if-exists - :if-does-not-exist :create)) - (new-standard-output - (make-broadcast-stream *standard-output* new-dribble-stream)) - (new-error-output - (make-broadcast-stream *error-output* new-dribble-stream)) - (new-standard-input - (make-echo-stream *standard-input* new-dribble-stream))) - (push (list *dribble-stream* *standard-input* *standard-output* - *error-output*) - *previous-dribble-streams*) - (setf *dribble-stream* new-dribble-stream) - (setf *standard-input* new-standard-input) - (setf *standard-output* new-standard-output) - (setf *error-output* new-error-output))) - ((null *dribble-stream*) - (error "not currently dribbling")) - (t - (let ((old-streams (pop *previous-dribble-streams*))) - (close *dribble-stream*) - (setf *dribble-stream* (first old-streams)) - (setf *standard-input* (second old-streams)) - (setf *standard-output* (third old-streams)) - (setf *error-output* (fourth old-streams))))) + (let* ((new-dribble-stream + (open pathname + :direction :output + :if-exists if-exists + :if-does-not-exist :create)) + (new-standard-output + (make-broadcast-stream *standard-output* new-dribble-stream)) + (new-error-output + (make-broadcast-stream *error-output* new-dribble-stream)) + (new-standard-input + (make-echo-stream *standard-input* new-dribble-stream))) + (push (list *dribble-stream* *standard-input* *standard-output* + *error-output*) + *previous-dribble-streams*) + (setf *dribble-stream* new-dribble-stream) + (setf *standard-input* new-standard-input) + (setf *standard-output* new-standard-output) + (setf *error-output* new-error-output))) + ((null *dribble-stream*) + (error "not currently dribbling")) + (t + (let ((old-streams (pop *previous-dribble-streams*))) + (close *dribble-stream*) + (setf *dribble-stream* (first old-streams)) + (setf *standard-input* (second old-streams)) + (setf *standard-output* (third old-streams)) + (setf *error-output* (fourth old-streams))))) (values)) (defun %byte-blt (src src-start dst dst-start dst-end) (%byte-blt src src-start dst dst-start dst-end)) + +;;;; some *LOAD-FOO* variables + +(defvar *load-print* nil + #!+sb-doc + "the default for the :PRINT argument to LOAD") + +(defvar *load-verbose* nil + ;; Note that CMU CL's default for this was T, and ANSI says it's + ;; implementation-dependent. We choose NIL on the theory that it's + ;; a nicer default behavior for Unix programs. + #!+sb-doc + "the default for the :VERBOSE argument to LOAD")