;;; to satisfy lambda list
;;; #:
;;; exactly 2 expected, but 5 found
-;;;
-;;; FIXME: These variables were deprecated in late February 2004, and
-;;; can probably be removed in about a year.
-(defvar *debug-print-level* 5
+(defvar *debug-print-variable-alist* nil
#!+sb-doc
- "(This is deprecated in favor of *DEBUG-PRINT-VARIABLE-ALIST*.)
+ "an association list describing new bindings for special variables
+to be used within the debugger. Eg.
-*PRINT-LEVEL* for the debugger")
-(defvar *debug-print-length* 7
- #!+sb-doc
- "(This is deprecated in favor of *DEBUG-PRINT-VARIABLE-ALIST*.)
+ ((*PRINT-LENGTH* . 10) (*PRINT-LEVEL* . 6) (*PRINT-PRETTY* . NIL))
-*PRINT-LENGTH* for the debugger")
+The variables in the CAR positions are bound to the values in the CDR
+during the execution of some debug commands. When evaluating arbitrary
+expressions in the debugger, the normal values of the printer control
+variables are in effect.
-(defvar *debug-print-variable-alist* nil
- #!+sb-doc
- "an association list describing new bindings for special variables
-(typically *PRINT-FOO* variables) to be used within the debugger, e.g.
-((*PRINT-LENGTH* . 10) (*PRINT-LEVEL* . 6) (*PRINT-PRETTY* . NIL))")
+Initially empty, *DEBUG-PRINT-VARIABLE-ALIST* is typically used to
+provide bindings for printer control variables.")
(defvar *debug-readtable*
;; KLUDGE: This can't be initialized in a cold toplevel form,
Any command -- including the name of a restart -- may be uniquely abbreviated.
The debugger rebinds various special variables for controlling i/o, sometimes
to defaults (much like WITH-STANDARD-IO-SYNTAX does) and sometimes to
- its own special values, e.g. SB-DEBUG:*DEBUG-PRINT-LEVEL*.
+ its own special values, based on SB-EXT:*DEBUG-PRINT-VARIBALE-ALIST*.
Debug commands do not affect *, //, and similar variables, but evaluation in
the debug loop does affect these variables.
SB-DEBUG:*FLUSH-DEBUG-ERRORS* controls whether errors at the debug prompt
(original-package *package*)
(original-print-pretty *print-pretty*))
(with-standard-io-syntax
- (let (;; We want the printer and reader to be in a useful state,
- ;; regardless of where the debugger was invoked in the
- ;; program. WITH-STANDARD-IO-SYNTAX did much of what we
- ;; want, but
- ;; * It doesn't affect our internal special variables
- ;; like *CURRENT-LEVEL-IN-PRINT*.
- ;; * It isn't customizable.
- ;; * It doesn't set *PRINT-READABLY* to the same value
- ;; as the toplevel default.
- ;; * It sets *PACKAGE* to COMMON-LISP-USER, which is not
- ;; helpful behavior for a debugger.
- ;; * There's no particularly good debugger default for
- ;; *PRINT-PRETTY*, since T is usually what you want
- ;; -- except absolutely not what you want when you're
- ;; debugging failures in PRINT-OBJECT logic.
- ;; We try to address all these issues with explicit
- ;; rebindings here.
- (sb!kernel:*current-level-in-print* 0)
- (*package* original-package)
- (*print-pretty* original-print-pretty)
- (*print-readably* nil)
- ;; Clear the circularity machinery to try to to reduce the
- ;; pain from sharing the circularity table across all
- ;; streams; if these are not rebound here, then setting
- ;; *PRINT-CIRCLE* within the debugger when debugging in a
- ;; state where something circular was being printed (e.g.,
- ;; because the debugger was entered on an error in a
- ;; PRINT-OBJECT method) makes a hopeless mess. Binding them
- ;; here does seem somewhat ugly because it makes it more
- ;; difficult to debug the printing-of-circularities code
- ;; itself; however, as far as I (WHN, 2004-05-29) can see,
- ;; that's almost entirely academic as long as there's one
- ;; shared *C-H-T* for all streams (i.e., it's already
- ;; unreasonably difficult to debug print-circle machinery
- ;; given the buggy crosstalk between the debugger streams
- ;; and the stream you're trying to watch), and any fix for
- ;; that buggy arrangement will likely let this hack go away
- ;; naturally.
- (sb!impl::*circularity-hash-table* . nil)
- (sb!impl::*circularity-counter* . nil)
- ;; These rebindings are now (as of early 2004) deprecated,
- ;; with the new *PRINT-VAR-ALIST* mechanism preferred.
- (*print-length* *debug-print-length*)
- (*print-level* *debug-print-level*)
- (*readtable* *debug-readtable*))
- (progv
- ;; (Why NREVERSE? PROGV makes the later entries have
- ;; precedence over the earlier entries.
- ;; *DEBUG-PRINT-VARIABLE-ALIST* is called an alist, so it's
- ;; expected that its earlier entries have precedence. And
- ;; the earlier-has-precedence behavior is mostly more
- ;; convenient, so that programmers can use PUSH or LIST* to
- ;; customize *DEBUG-PRINT-VARIABLE-ALIST*.)
- (nreverse (mapcar #'car *debug-print-variable-alist*))
- (nreverse (mapcar #'cdr *debug-print-variable-alist*))
- (apply fun rest))))))
+ (with-sane-io-syntax
+ (let (;; We want the printer and reader to be in a useful
+ ;; state, regardless of where the debugger was invoked
+ ;; in the program. WITH-STANDARD-IO-SYNTAX and
+ ;; WITH-SANE-IO-SYNTAX do much of what we want, but
+ ;; * It doesn't affect our internal special variables
+ ;; like *CURRENT-LEVEL-IN-PRINT*.
+ ;; * It isn't customizable.
+ ;; * It sets *PACKAGE* to COMMON-LISP-USER, which is not
+ ;; helpful behavior for a debugger.
+ ;; * There's no particularly good debugger default for
+ ;; *PRINT-PRETTY*, since T is usually what you want
+ ;; -- except absolutely not what you want when you're
+ ;; debugging failures in PRINT-OBJECT logic.
+ ;; We try to address all these issues with explicit
+ ;; rebindings here.
+ (sb!kernel:*current-level-in-print* 0)
+ (*package* original-package)
+ (*print-pretty* original-print-pretty)
+ ;; Clear the circularity machinery to try to to reduce the
+ ;; pain from sharing the circularity table across all
+ ;; streams; if these are not rebound here, then setting
+ ;; *PRINT-CIRCLE* within the debugger when debugging in a
+ ;; state where something circular was being printed (e.g.,
+ ;; because the debugger was entered on an error in a
+ ;; PRINT-OBJECT method) makes a hopeless mess. Binding them
+ ;; here does seem somewhat ugly because it makes it more
+ ;; difficult to debug the printing-of-circularities code
+ ;; itself; however, as far as I (WHN, 2004-05-29) can see,
+ ;; that's almost entirely academic as long as there's one
+ ;; shared *C-H-T* for all streams (i.e., it's already
+ ;; unreasonably difficult to debug print-circle machinery
+ ;; given the buggy crosstalk between the debugger streams
+ ;; and the stream you're trying to watch), and any fix for
+ ;; that buggy arrangement will likely let this hack go away
+ ;; naturally.
+ (sb!impl::*circularity-hash-table* . nil)
+ (sb!impl::*circularity-counter* . nil)
+ (*readtable* *debug-readtable*))
+ (progv
+ ;; (Why NREVERSE? PROGV makes the later entries have
+ ;; precedence over the earlier entries.
+ ;; *DEBUG-PRINT-VARIABLE-ALIST* is called an alist, so it's
+ ;; expected that its earlier entries have precedence. And
+ ;; the earlier-has-precedence behavior is mostly more
+ ;; convenient, so that programmers can use PUSH or LIST* to
+ ;; customize *DEBUG-PRINT-VARIABLE-ALIST*.)
+ (nreverse (mapcar #'car *debug-print-variable-alist*))
+ (nreverse (mapcar #'cdr *debug-print-variable-alist*))
+ (apply fun rest)))))))
;;; the ordinary ANSI case of INVOKE-DEBUGGER, when not suppressed by
;;; command-line --disable-debugger option
;; and output on T seems broken.
(format t
"~&error flushed (because ~
- ~S is set)"
+ ~S is set)"
'*flush-debug-errors*)
(/show0 "throwing DEBUG-LOOP-CATCHER")
(throw 'debug-loop-catcher nil)))))
(cond
((not any-p)
(format t "There are no local variables ~@[starting with ~A ~]~
- in the function."
+ in the function."
prefix))
((not any-valid-p)
(format t "All variables ~@[starting with ~A ~]currently ~
- have invalid values."
+ have invalid values."
prefix))))
(write-line "There is no variable information available."))))
(file-position *cached-source-stream* char-offset))
(t
(format t "~%; File has been modified since compilation:~%; ~A~@
- ; Using form offset instead of character position.~%"
+ ; Using form offset instead of character position.~%"
(namestring name))
(file-position *cached-source-stream* 0)
(let ((*read-suppress* t))
projects / sbcl.git / blobdiff