(defvar *maximum-error-depth*)
(defvar *current-error-depth*)
+;;;; default initfiles
+
+(defun sysinit-pathname ()
+ (or (let ((sbcl-homedir (sbcl-homedir-pathname)))
+ (when sbcl-homedir
+ (probe-file (merge-pathnames sbcl-homedir "sbclrc"))))
+ #!+win32
+ (merge-pathnames (sb!win32::get-folder-pathname
+ sb!win32::csidl_common_appdata)
+ "\\sbcl\\sbclrc")
+ #!-win32
+ "/etc/sbclrc"))
+
+(defun userinit-pathname ()
+ (merge-pathnames ".sbclrc" (user-homedir-pathname)))
+
+(defvar *sysinit-pathname-function* #'sysinit-pathname
+ #!+sb-doc
+ "Designator for a function of zero arguments called to obtain a pathname
+designator for the default sysinit file, or NIL. If the function returns NIL,
+no sysinit file is used unless one has been specified on the command-line.")
+
+(defvar *userinit-pathname-function* #'userinit-pathname
+ #!+sb-doc
+ "Designator for a function of zero arguments called to obtain a pathname
+designator or a stream for the default userinit file, or NIL. If the function
+returns NIL, no userinit file is used unless one has been specified on the
+command-line.")
+
;;;; stepping control
(defvar *step*)
(defvar *stepping*)
(defvar *step-form-stack* nil
+ #!+sb-doc
"A place for single steppers to push information about
STEP-FORM-CONDITIONS avaiting the corresponding
STEP-VALUES-CONDITIONS. The system is guaranteed to empty the stack
(defvar - nil #!+sb-doc "the form currently being evaluated")
(defun interactive-eval (form)
+ #!+sb-doc
"Evaluate FORM, returning whatever it returns and adjusting ***, **, *,
- +++, ++, +, ///, //, /, and -."
++++, ++, +, ///, //, /, and -."
(setf - form)
(unwind-protect
(let ((results (multiple-value-list (eval form))))
(force-output (symbol-value name)))
(values))
-(defun process-init-file (truename)
- (when truename
- (restart-case
- (with-open-file (s truename :if-does-not-exist nil)
- (flet ((next ()
- (let ((form (read s nil s)))
- (if (eq s form)
- (return-from process-init-file nil)
- (eval form)))))
- (loop
- (restart-case
- (handler-bind ((error (lambda (e)
- (error
- "Error during processing of ~
- initialization file ~A:~%~% ~A"
- truename e))))
- (next))
- (continue ()
- :report "Ignore and continue processing.")))))
- (abort ()
- :report "Skip rest of initialization file."))))
+(defun process-init-file (specified-pathname default-function)
+ (restart-case
+ (let ((cookie (list)))
+ (flet ((process-stream (stream &optional pathname)
+ (loop
+ (restart-case
+ (handler-bind
+ ((error (lambda (e)
+ (error "Error during processing of ~
+ initialization file ~A:~%~% ~A"
+ (or pathname stream) e))))
+ (let ((form (read stream nil cookie)))
+ (if (eq cookie form)
+ (return-from process-init-file nil)
+ (eval form))))
+ (continue ()
+ :report "Ignore and continue processing.")))))
+ (if specified-pathname
+ (with-open-file (stream (parse-native-namestring specified-pathname)
+ :if-does-not-exist nil)
+ (if stream
+ (process-stream stream (pathname stream))
+ (error "The specified init file ~S was not found."
+ specified-pathname)))
+ (let ((default (funcall default-function)))
+ (when default
+ (with-open-file (stream (pathname default) :if-does-not-exist nil)
+ (when stream
+ (process-stream stream (pathname stream)))))))))
+ (abort ()
+ :report "Skip this initialization file.")))
(defun process-eval-options (eval-strings-or-forms)
(/show0 "handling --eval options")
(abort ()
:report "Skip rest of --eval options."))))
+;; Errors while processing the command line cause the system to QUIT,
+;; instead of trying to go into the Lisp debugger, because trying to
+;; go into the Lisp debugger would get into various annoying issues of
+;; where we should go after the user tries to return from the
+;; debugger.
+(defun startup-error (control-string &rest args)
+ (format *error-output*
+ "fatal error before reaching READ-EVAL-PRINT loop: ~% ~?~%"
+ control-string
+ args)
+ (quit :unix-status 1))
+
;;; the default system top level function
(defun toplevel-init ()
(/show0 "entering TOPLEVEL-INIT")
- (let (;; value of --sysinit option
+ (let ( ;; value of --sysinit option
(sysinit nil)
;; t if --no-sysinit option given
(no-sysinit nil)
;; reasonably.
;; Process command line options.
- (flet (;; Errors while processing the command line cause the system
- ;; to QUIT, instead of trying to go into the Lisp debugger,
- ;; because trying to go into the Lisp debugger would get
- ;; into various annoying issues of where we should go after
- ;; the user tries to return from the debugger.
- (startup-error (control-string &rest args)
- (format
- *error-output*
- "fatal error before reaching READ-EVAL-PRINT loop: ~% ~?~%"
- control-string
- args)
- (quit :unix-status 1)))
- (loop while options do
- (/show0 "at head of LOOP WHILE OPTIONS DO in TOPLEVEL-INIT")
- (let ((option (first options)))
- (flet ((pop-option ()
- (if options
- (pop options)
- (startup-error
- "unexpected end of command line options"))))
- (cond ((string= option "--sysinit")
- (pop-option)
- (if sysinit
- (startup-error "multiple --sysinit options")
- (setf sysinit (pop-option))))
- ((string= option "--no-sysinit")
- (pop-option)
- (setf no-sysinit t))
- ((string= option "--userinit")
- (pop-option)
- (if userinit
- (startup-error "multiple --userinit options")
- (setf userinit (pop-option))))
- ((string= option "--no-userinit")
- (pop-option)
- (setf no-userinit t))
- ((string= option "--eval")
- (pop-option)
- (push (pop-option) reversed-evals))
- ((string= option "--load")
- (pop-option)
- (push
- (list 'cl:load (native-pathname (pop-option)))
- reversed-evals))
- ((string= option "--noprint")
- (pop-option)
- (setf noprint t))
- ((string= option "--disable-debugger")
- (pop-option)
- (push (list 'sb!ext:disable-debugger) reversed-evals))
- ((string= option "--end-toplevel-options")
- (pop-option)
- (return))
- (t
- ;; Anything we don't recognize as a toplevel
- ;; option must be the start of user-level
- ;; options.. except that if we encounter
- ;; "--end-toplevel-options" after we gave up
- ;; because we didn't recognize an option as a
- ;; toplevel option, then the option we gave up on
- ;; must have been an error. (E.g. in
- ;; "sbcl --eval '(a)' --eval'(b)' --end-toplevel-options"
- ;; this test will let us detect that the string
- ;; "--eval(b)" is an error.)
- (if (find "--end-toplevel-options" options
- :test #'string=)
- (startup-error "bad toplevel option: ~S"
- (first options))
- (return)))))))
- (/show0 "done with LOOP WHILE OPTIONS DO in TOPLEVEL-INIT")
-
- ;; Delete all the options that we processed, so that only
- ;; user-level options are left visible to user code.
- (setf (rest *posix-argv*) options)
-
- ;; Handle initialization files.
- (/show0 "handling initialization files in TOPLEVEL-INIT")
- (flet (;; shared idiom for searching for SYSINITish and
- ;; USERINITish files
- (probe-init-files (explicitly-specified-init-file-name
- &rest default-init-file-names)
- (declare (type list default-init-file-names))
- (if explicitly-specified-init-file-name
- (or (probe-file
- (parse-native-namestring
- explicitly-specified-init-file-name))
- (startup-error "The file ~S was not found."
- explicitly-specified-init-file-name))
- (find-if (lambda (x)
- (and (pathnamep x) (probe-file x)))
- default-init-file-names))))
- (let ((sysinit-truename
- (probe-init-files sysinit
- (let ((sbcl-homedir (sbcl-homedir-pathname)))
- (when sbcl-homedir
- (merge-pathnames sbcl-homedir "sbclrc")))
- #!-win32
- "/etc/sbclrc"
- #!+win32
- (merge-pathnames
- (sb!win32::get-folder-pathname
- sb!win32::csidl_common_appdata)
- "\\sbcl\\sbclrc")))
- (userinit-truename
- (probe-init-files userinit
- (merge-pathnames (user-homedir-pathname)
- ".sbclrc"))))
- ;; This CATCH is needed for the debugger command TOPLEVEL to
- ;; work.
- (catch 'toplevel-catcher
- ;; We wrap all the pre-REPL user/system customized startup
- ;; code in a restart.
- ;;
- ;; (Why not wrap everything, even the stuff above, in this
- ;; restart? Errors above here are basically command line
- ;; or Unix environment errors, e.g. a missing file or a
- ;; typo on the Unix command line, and you don't need to
- ;; get into Lisp to debug them, you should just start over
- ;; and do it right at the Unix level. Errors below here
- ;; are generally errors in user Lisp code, and it might be
- ;; helpful to let the user reach the REPL in order to help
- ;; figure out what's going on.)
- (restart-case
- (progn
- (unless no-sysinit (process-init-file sysinit-truename))
- (unless no-userinit (process-init-file userinit-truename))
- (process-eval-options (reverse reversed-evals)))
- (abort ()
- :report "Skip to toplevel READ/EVAL/PRINT loop."
- (/show0 "CONTINUEing from pre-REPL RESTART-CASE")
- (values)) ; (no-op, just fall through)
- (quit ()
- :report "Quit SBCL (calling #'QUIT, killing the process)."
- (/show0 "falling through to QUIT from pre-REPL RESTART-CASE")
- (quit)))))
-
- ;; one more time for good measure, in case we fell out of the
- ;; RESTART-CASE above before one of the flushes in the ordinary
- ;; flow of control had a chance to operate
- (flush-standard-output-streams)
-
- (/show0 "falling into TOPLEVEL-REPL from TOPLEVEL-INIT")
- (toplevel-repl noprint)
- ;; (classic CMU CL error message: "You're certainly a clever child.":-)
- (critically-unreachable "after TOPLEVEL-REPL")))))
+ (loop while options do
+ (/show0 "at head of LOOP WHILE OPTIONS DO in TOPLEVEL-INIT")
+ (let ((option (first options)))
+ (flet ((pop-option ()
+ (if options
+ (pop options)
+ (startup-error
+ "unexpected end of command line options"))))
+ (cond ((string= option "--sysinit")
+ (pop-option)
+ (if sysinit
+ (startup-error "multiple --sysinit options")
+ (setf sysinit (pop-option))))
+ ((string= option "--no-sysinit")
+ (pop-option)
+ (setf no-sysinit t))
+ ((string= option "--userinit")
+ (pop-option)
+ (if userinit
+ (startup-error "multiple --userinit options")
+ (setf userinit (pop-option))))
+ ((string= option "--no-userinit")
+ (pop-option)
+ (setf no-userinit t))
+ ((string= option "--eval")
+ (pop-option)
+ (push (pop-option) reversed-evals))
+ ((string= option "--load")
+ (pop-option)
+ (push
+ (list 'cl:load (native-pathname (pop-option)))
+ reversed-evals))
+ ((string= option "--noprint")
+ (pop-option)
+ (setf noprint t))
+ ((string= option "--disable-debugger")
+ (pop-option)
+ (push (list 'sb!ext:disable-debugger) reversed-evals))
+ ((string= option "--end-toplevel-options")
+ (pop-option)
+ (return))
+ (t
+ ;; Anything we don't recognize as a toplevel
+ ;; option must be the start of user-level
+ ;; options.. except that if we encounter
+ ;; "--end-toplevel-options" after we gave up
+ ;; because we didn't recognize an option as a
+ ;; toplevel option, then the option we gave up on
+ ;; must have been an error. (E.g. in
+ ;; "sbcl --eval '(a)' --eval'(b)' --end-toplevel-options"
+ ;; this test will let us detect that the string
+ ;; "--eval(b)" is an error.)
+ (if (find "--end-toplevel-options" options
+ :test #'string=)
+ (startup-error "bad toplevel option: ~S"
+ (first options))
+ (return)))))))
+ (/show0 "done with LOOP WHILE OPTIONS DO in TOPLEVEL-INIT")
+
+ ;; Delete all the options that we processed, so that only
+ ;; user-level options are left visible to user code.
+ (setf (rest *posix-argv*) options)
+
+ ;; Handle initialization files.
+ (/show0 "handling initialization files in TOPLEVEL-INIT")
+ ;; This CATCH is needed for the debugger command TOPLEVEL to
+ ;; work.
+ (catch 'toplevel-catcher
+ ;; We wrap all the pre-REPL user/system customized startup
+ ;; code in a restart.
+ ;;
+ ;; (Why not wrap everything, even the stuff above, in this
+ ;; restart? Errors above here are basically command line
+ ;; or Unix environment errors, e.g. a missing file or a
+ ;; typo on the Unix command line, and you don't need to
+ ;; get into Lisp to debug them, you should just start over
+ ;; and do it right at the Unix level. Errors below here
+ ;; are generally errors in user Lisp code, and it might be
+ ;; helpful to let the user reach the REPL in order to help
+ ;; figure out what's going on.)
+ (restart-case
+ (progn
+ (unless no-sysinit
+ (process-init-file sysinit *sysinit-pathname-function*))
+ (unless no-userinit
+ (process-init-file userinit *userinit-pathname-function*))
+ (process-eval-options (nreverse reversed-evals)))
+ (abort ()
+ :report "Skip to toplevel READ/EVAL/PRINT loop."
+ (/show0 "CONTINUEing from pre-REPL RESTART-CASE")
+ (values)) ; (no-op, just fall through)
+ (quit ()
+ :report "Quit SBCL (calling #'QUIT, killing the process)."
+ (/show0 "falling through to QUIT from pre-REPL RESTART-CASE")
+ (quit :unix-status 1))))
+
+ ;; one more time for good measure, in case we fell out of the
+ ;; RESTART-CASE above before one of the flushes in the ordinary
+ ;; flow of control had a chance to operate
+ (flush-standard-output-streams)
+
+ (/show0 "falling into TOPLEVEL-REPL from TOPLEVEL-INIT")
+ (toplevel-repl noprint)
+ ;; (classic CMU CL error message: "You're certainly a clever child.":-)
+ (critically-unreachable "after TOPLEVEL-REPL")))
;;; hooks to support customized toplevels like ACL-style toplevel from
;;; KMR on sbcl-devel 2002-12-21. Altered by CSR 2003-11-16 for
;;; threaded operation: altered *REPL-FUN* to *REPL-FUN-GENERATOR*.
(defvar *repl-read-form-fun* #'repl-read-form-fun
- "a function of two stream arguments IN and OUT for the toplevel REPL to
- call: Return the next Lisp form to evaluate (possibly handling other
- magic -- like ACL-style keyword commands -- which precede the next
- Lisp form). The OUT stream is there to support magic which requires
- issuing new prompts.")
+ #!+sb-doc
+ "A function of two stream arguments IN and OUT for the toplevel REPL to
+call: Return the next Lisp form to evaluate (possibly handling other magic --
+like ACL-style keyword commands -- which precede the next Lisp form). The OUT
+stream is there to support magic which requires issuing new prompts.")
(defvar *repl-prompt-fun* #'repl-prompt-fun
- "a function of one argument STREAM for the toplevel REPL to call: Prompt
- the user for input.")
+ #!+sb-doc
+ "A function of one argument STREAM for the toplevel REPL to call: Prompt
+the user for input.")
(defvar *repl-fun-generator* (constantly #'repl-fun)
- "a function of no arguments returning a function of one argument
- NOPRINT that provides the REPL for the system. Assumes that
- *STANDARD-INPUT* and *STANDARD-OUTPUT* are set up.")
+ #!+sb-doc
+ "A function of no arguments returning a function of one argument NOPRINT
+that provides the REPL for the system. Assumes that *STANDARD-INPUT* and
+*STANDARD-OUTPUT* are set up.")
;;; read-eval-print loop for the default system toplevel
(defun toplevel-repl (noprint)
projects / sbcl.git / commitdiff