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1 ;;; edebug.el --- a source-level debugger for Emacs Lisp
3 ;; Copyright (C) 1988-1995, 1997, 1999-2012 Free Software Foundation, Inc.
5 ;; Author: Daniel LaLiberte <liberte@holonexus.org>
6 ;; Maintainer: FSF
7 ;; Keywords: lisp, tools, maint
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
24 ;;; Commentary:
26 ;; This minor mode allows programmers to step through Emacs Lisp
27 ;; source code while executing functions. You can also set
28 ;; breakpoints, trace (stopping at each expression), evaluate
29 ;; expressions as if outside Edebug, reevaluate and display a list of
30 ;; expressions, trap errors normally caught by debug, and display a
31 ;; debug style backtrace.
33 ;;; Minimal Instructions
34 ;; =====================
36 ;; First evaluate a defun with C-M-x, then run the function. Step
37 ;; through the code with SPC, mark breakpoints with b, go until a
38 ;; breakpoint is reached with g, and quit execution with q. Use the
39 ;; "?" command in edebug to describe other commands.
40 ;; See the Emacs Lisp Reference Manual for more details.
42 ;; If you wish to change the default edebug global command prefix, change:
43 ;; (setq edebug-global-prefix "\C-xX")
45 ;; Edebug was written by
46 ;; Daniel LaLiberte
47 ;; GTE Labs
48 ;; 40 Sylvan Rd
49 ;; Waltham, MA 02254
50 ;; liberte@holonexus.org
52 ;;; Code:
54 ;;; Bug reporting
58 ;;; Options
61 "A source-level debugger for Emacs Lisp."
66 "Functions to call before edebug is used.
67 Each time it is set to a new value, Edebug will call those functions
68 once and then reset `edebug-setup-hook' to nil. You could use this
69 to load up Edebug specifications associated with a package you are
70 using, but only when you also use Edebug."
74 ;; edebug-all-defs and edebug-all-forms need to be autoloaded
75 ;; because the byte compiler binds them; as a result, if edebug
76 ;; is first loaded for a require in a compilation, they will be left unbound.
78 ;;;###autoload
80 "If non-nil, evaluating defining forms instruments for Edebug.
81 This applies to `eval-defun', `eval-region', `eval-buffer', and
82 `eval-current-buffer'. `eval-region' is also called by
83 `eval-last-sexp', and `eval-print-last-sexp'.
85 You can use the command `edebug-all-defs' to toggle the value of this
86 variable. You may wish to make it local to each buffer with
87 \(make-local-variable 'edebug-all-defs) in your
88 `emacs-lisp-mode-hook'."
92 ;; edebug-all-defs and edebug-all-forms need to be autoloaded
93 ;; because the byte compiler binds them; as a result, if edebug
94 ;; is first loaded for a require in a compilation, they will be left unbound.
96 ;;;###autoload
98 "Non-nil means evaluation of all forms will instrument for Edebug.
99 This doesn't apply to loading or evaluations in the minibuffer.
100 Use the command `edebug-all-forms' to toggle the value of this option."
105 "Non-nil means all macro call arguments may be evaluated.
106 If this variable is nil, the default, Edebug will *not* wrap
107 macro call arguments as if they will be evaluated.
108 For each macro, an `edebug-form-spec' overrides this option.
109 So to specify exceptions for macros that have some arguments evaluated
110 and some not, use `def-edebug-spec' to specify an `edebug-form-spec'."
115 "If non-nil, Edebug saves and restores the window configuration.
116 That takes some time, so if your program does not care what happens to
117 the window configurations, it is better to set this variable to nil.
119 If the value is a list, only the listed windows are saved and
120 restored.
122 `edebug-toggle-save-windows' may be used to change this variable."
127 "If non-nil, save and restore point in all displayed buffers.
129 Saving and restoring point in other buffers is necessary if you are
130 debugging code that changes the point of a buffer that is displayed
131 in a non-selected window. If Edebug or the user then selects the
132 window, the buffer's point will be changed to the window's point.
134 Saving and restoring point in all buffers is expensive, since it
135 requires selecting each window twice, so enable this only if you
136 need it."
141 "Initial execution mode for Edebug, if non-nil.
142 If this variable is non-nil, it specifies the initial execution mode
143 for Edebug when it is first activated. Possible values are step, next,
144 go, Go-nonstop, trace, Trace-fast, continue, and Continue-fast."
152 "Non-nil means display a trace of function entry and exit.
153 Tracing output is displayed in a buffer named `*edebug-trace*', one
154 function entry or exit per line, indented by the recursion level.
156 You can customize by replacing functions `edebug-print-trace-before'
157 and `edebug-print-trace-after'."
162 "If non-nil, Edebug tests coverage of all expressions debugged.
163 This is done by comparing the result of each expression with the
164 previous result. Coverage is considered OK if two different
165 results are found.
167 Use `edebug-display-freq-count' to display the frequency count and
168 coverage information for a definition."
173 "If non-nil, continue defining or executing any keyboard macro.
174 Use this with caution since it is not debugged."
180 "If non-nil, default value of `print-length' for printing results in Edebug."
184 "If non-nil, default value of `print-level' for printing results in Edebug."
188 "If non-nil, default value of `print-circle' for printing results in Edebug."
193 "Non-nil if Edebug should unwrap results of expressions.
194 That is, Edebug will try to remove its own instrumentation from the result.
195 This is useful when debugging macros where the results of expressions
196 are instrumented expressions. But don't do this when results might be
197 circular or an infinite loop will result."
202 "Value bound to `debug-on-error' while Edebug is active.
204 If `debug-on-error' is non-nil, that value is still used.
206 If the value is a list of signal names, Edebug will stop when any of
207 these errors are signaled from Lisp code whether or not the signal is
208 handled by a `condition-case'. This option is useful for debugging
209 signals that *are* handled since they would otherwise be missed.
210 After execution is resumed, the error is signaled again."
219 "Value bound to `debug-on-quit' while Edebug is active."
224 "If non-nil, an expression to test for at every stop point.
225 If the result is non-nil, then break. Errors are ignored."
230 "Number of seconds to pause when execution mode is `trace' or `continue'."
234 ;;; Form spec utilities.
237 "For compatibility with old version."
242 ;; Get the spec of symbol resolving all indirection.
244 indirect)
247 ;; (edebug-trace "indirection: %s" edebug-form-spec)
249 edebug-form-spec
250 ))
252 ;;;###autoload
254 "Return t if SPEC uses only extant spec symbols.
255 An extant spec symbol is a symbol that is not a function and has a
256 `edebug-form-spec' property."
262 t))
266 ;;; Utilities
268 ;; Define edebug-gensym - from old cl.el
273 "Generate a fresh uninterned symbol.
274 There is an optional argument, PREFIX. PREFIX is the string
275 that begins the new name. Most people take just the default,
276 except when debugging needs suggest otherwise."
286 newsymbol))
289 "Return t if OBJECT is a lambda list keyword.
290 A lambda list keyword is a symbol that starts with `&'."
296 ;; Return the last sexp before point in current buffer.
297 ;; Assumes Emacs Lisp syntax is active.
307 "Return a list of windows, in order of `next-window'."
308 ;; This doesn't work for epoch.
313 ;; Not used.
315 "Return t if there are two windows."
323 object)
326 "Return the macro named by OBJECT, or nil if it is not a macro."
331 object))
334 ;; Return the ALIST sorted with comparison function FUNCTION.
335 ;; This uses 'sort so the sorting is destructive.
340 ;;(def-edebug-spec edebug-save-restriction t)
342 ;; Not used. If it is used, def-edebug-spec must be defined before use.
344 "Evaluate BODY while saving the current buffers restriction.
345 BODY may change buffer outside of current restriction, unlike
346 save-restriction. BODY may change the current buffer,
347 and the restriction will be restored to the original buffer,
348 and the current buffer remains current.
349 Return the result of the last expression in BODY."
357 ;;; Display
363 ;; Like pop-to-buffer, but select window where BUFFER was last shown.
364 ;; Select WINDOW if it is provided and still exists. Otherwise,
365 ;; if buffer is currently shown in several windows, choose one.
366 ;; Otherwise, find a new window, possibly splitting one.
371 window)
373 ;; Selected window already displays BUFFER.
377 ;; When there's one window only, split it.
384 ;; Found a non-dedicated window not showing
385 ;; `edebug-trace-buffer', use it.
387 ;; All windows are dedicated or show `edebug-trace-buffer', split
388 ;; selected one.
393 ;; Selecting the window does not set the buffer until command loop.
394 ;;(set-buffer buffer)
395 )
398 ;; Return a list of buffer point pairs, for all displayed buffers.
404 list))))
405 list))
409 ;; Restore the buffer-points created by edebug-get-displayed-buffer-points.
415 buffer-points)))
418 ;; Get either a full window configuration or some window information.
427 which-windows)
431 ;; Set either a full window configuration or some window information.
444 one-window-info))))
445 window-info)
453 ;;; Redefine read and eval functions
454 ;; read is redefined to maybe instrument forms.
455 ;; eval-defun is redefined to check edebug-all-forms and edebug-all-defs.
457 ;; Save the original read function
462 "Read one Lisp expression as text from STREAM, return as Lisp object.
463 If STREAM is nil, use the value of `standard-input' (which see).
464 STREAM or the value of `standard-input' may be:
465 a buffer (read from point and advance it)
466 a marker (read from where it points and advance it)
467 a function (call it with no arguments for each character,
468 call it with a char as argument to push a char back)
469 a string (takes text from string, starting at the beginning)
470 t (read text line using minibuffer and use it).
472 This version, from Edebug, maybe instruments the expression. But the
473 STREAM must be the current buffer to do so. Whether it instruments is
474 also dependent on the values of `edebug-all-defs' and
475 `edebug-all-forms'."
484 ;; We should somehow arrange to be able to do this
485 ;; without actually replacing the eval-defun command.
487 "Evaluate the top-level form containing point, or after point.
489 If the current defun is actually a call to `defvar', then reset the
490 variable using its initial value expression even if the variable
491 already has some other value. (Normally `defvar' does not change the
492 variable's value if it already has a value.) Treat `defcustom'
493 similarly. Reinitialize the face according to `defface' specification.
495 With a prefix argument, instrument the code for Edebug.
497 Setting `edebug-all-defs' to a non-nil value reverses the meaning of
498 the prefix argument. Code is then instrumented when this function is
499 invoked without a prefix argument
501 If acting on a `defun' for FUNCTION, and the function was instrumented,
502 `Edebug: FUNCTION' is printed in the minibuffer. If not instrumented,
503 just FUNCTION is printed.
505 If not acting on a `defun', the result of evaluation is displayed in
506 the minibuffer."
514 ;; This should be consistent with `eval-defun-1', but not the
515 ;; same, since that gets a macroexpanded form.
518 ;; Force variable to be bound.
522 ;; Force variable to be bound.
523 ;; FIXME: Shouldn't this use the :setter or :initializer?
526 ;; Reset the face.
531 ;; See comments in `eval-defun-1' for purpose of code below
541 edebug-result)))
544 ;;;###autoload
547 ;;;###autoload
549 "Evaluate the top level form point is in, stepping through with Edebug.
550 This is like `eval-defun' except that it steps the code for Edebug
551 before evaluating it. It displays the value in the echo area
552 using `eval-expression' (which see).
554 If you do this on a function definition such as a defun or defmacro,
555 it defines the function and instruments its definition for Edebug,
556 so it will do Edebug stepping when called later. It displays
557 `Edebug: FUNCTION' in the echo area to indicate that FUNCTION is now
558 instrumented for Edebug.
560 If the current defun is actually a call to `defvar' or `defcustom',
561 evaluating it this way resets the variable using its initial value
562 expression even if the variable already has some other value.
563 \(Normally `defvar' and `defcustom' do not alter the value if there
564 already is one.)"
567 ;; Bind edebug-all-forms only while reading, not while evalling
568 ;; but this causes problems while edebugging edebug.
581 ;; Recover point, but only if no error occurred.
585 ;; Compatibility with old versions.
588 ;;;###autoload
590 "Toggle edebugging of all definitions."
597 ;;;###autoload
599 "Toggle edebugging of all forms."
608 ;; Don't install if already installed.
619 ;;; Edebug internal data
621 ;; The internal data that is needed for edebugging is kept in the
622 ;; buffer-local variable `edebug-form-data'.
627 ;; A list of entries associating symbols with buffer regions.
628 ;; This is an automatic buffer local variable. Each entry looks like:
629 ;; @code{(@var{symbol} @var{begin-marker} @var{end-marker}). The markers
630 ;; are at the beginning and end of an entry level form and @var{symbol} is
631 ;; a symbol that holds all edebug related information for the form on its
632 ;; property list.
634 ;; In the future, the symbol will be irrelevant and edebug data will
635 ;; be stored in the definitions themselves rather than in the property
636 ;; list of a symbol.
656 ;; Find the edebug form data entry which is closest to PNT.
657 ;; If END-POINT is supplied, match must be exact.
658 ;; Return `nil' if none found.
660 closest-entry
673 closest-entry entry))))
674 closest-entry))
676 ;; Also need to find all contained entries,
677 ;; and find an entry given a symbol, which should be just assq.
680 ;; Return the edebug data symbol of the form where point is in.
681 ;; If point is not inside a edebuggable form, cause error.
686 ;; Make NEW-ENTRY the first element in the `edebug-form-data' list.
691 ;; If non-nil, clear ENTRY out of the form data.
692 ;; Maybe clear the markers and delete the symbol's edebug property?
695 ;; Instead of this, we could just find all contained forms.
696 ;; (put (car entry) 'edebug nil) ;
697 ;; (mapcar 'edebug-clear-form-data-entry ; dangerous
698 ;; (get (car entry) 'edebug-dependents))
699 ;; (set-marker (nth 1 entry) nil)
700 ;; (set-marker (nth 2 entry) nil)
703 ;;; Parser utilities
706 ;; Signal an invalid-read-syntax with ARGS.
711 ;; Lookup table for significant characters indicating the class of the
712 ;; token that follows. This is not a \"real\" syntax table.
729 ;; We treat numbers as symbols, because of confusion with -, -1, and 1-.
730 ;; We don't care about any other chars since they won't be seen.
731 table))
734 ;; Move to the next token and return its class. We only care about
735 ;; lparen, rparen, dot, quote, backquote, comma, string, char, vector,
736 ;; or symbol.
745 'symbol
750 ;; Leave point before the next token, skipping white space and comments.
757 ;; Mostly obsolete reader; still used in one case.
760 ;; Read one sexp from the current buffer starting at point.
761 ;; Leave point immediately after it. A sexp can be a list or atom.
762 ;; An atom is a symbol (or number), character, string, or vector.
763 ;; This works for reading anything legitimate, but it
764 ;; is gummed up by parser inconsistencies (bugs?)
767 ;; read goes one too far if a (possibly quoted) string or symbol
768 ;; is immediately followed by non-whitespace.
780 ;;; Offsets for reader
782 ;; Define a structure to represent offset positions of expressions.
783 ;; Each offset structure looks like: (before . after) for constituents,
784 ;; or for structures that have elements: (before <subexpressions> . after)
785 ;; where the <subexpressions> are the offset structures for subexpressions
786 ;; including the head of a list.
789 ;; Stack of offset structures in reverse order of the nesting.
790 ;; This is used to get back to previous levels.
794 ;; We must store whether we just read a list with a dotted form that
795 ;; is itself a list. This structure will be condensed, so the offsets
796 ;; must also be condensed.
800 ;; Reinitialize offset recording.
804 ;; Add a new offset pair with POINT as the before offset.
809 ;; Otherwise, we are at the top level, so initialize.
811 edebug-offsets-stack nil
812 edebug-read-dotted-list nil))
813 ;; Cons the new offset to the front of the stack.
815 edebug-current-offset new-offset)
816 ))
819 ;; Finalize the current offset struct by reversing it and
820 ;; store POINT as the after offset.
822 ;; Just reverse the offsets of all subexpressions.
825 ;; We just read a list after a dot, which will be abbreviated out.
827 ;; Drop the corresponding offset pair.
828 ;; That is, nconc the reverse of the rest of the offsets
829 ;; with the cdr of last offset.
834 ;; Now append the point using nconc.
836 ;; Pop the stack.
841 ;; Ignore the last created offset pair.
853 ;;; Reader for Emacs Lisp.
855 ;; Uses edebug-next-token-class (and edebug-skip-whitespace) above.
866 ))
873 ;; anything else, just read it.
875 stream))))
884 ;; Turn 'thing into (quote thing)
891 ;; Turn `thing into (\` thing)
898 ;; Turn ,thing into (\, thing). Handle ,@ and ,. also.
908 ;; Generate the same structure of offsets we would have
909 ;; if the resulting list appeared verbatim in the input text.
915 ;; Turn #'thing into (function thing)
944 ))
945 elements)
947 ))
957 ))
959 ;;; Cursors for traversal of list and vector elements with offsets.
964 ;; Return a new cursor for EXPRESSIONS with OFFSETS.
970 ;; Set the CURSOR's EXPRESSIONS and OFFSETS to the given.
971 ;; Return the cursor.
974 cursor)
977 ;; Copy the cursor using the same object and offsets.
986 ;; Return non-nil if CURSOR is empty - meaning no more elements.
990 ;; Return the top element at the cursor.
991 ;; Assumes not empty.
995 ;; Check if a dotted form is required.
997 ;; Check if there is at least one more argument.
999 ;; Return that top element.
1003 ;; Return the top offset pair corresponding to the top element.
1007 ;; Advance and return the cursor to the next element and offset.
1008 ;; throw no-match if empty before moving.
1009 ;; This is a violation of the cursor encapsulation, but
1010 ;; there is plenty of that going on while matching.
1011 ;; The following test should always fail.
1016 cursor)
1020 ;; Return the before offset of the cursor.
1021 ;; If there is nothing left in the offsets,
1022 ;; return one less than the offset itself,
1023 ;; which is the after offset for a list.
1030 ;; Return the after offset of the cursor object.
1034 offset))
1036 ;;; The Parser
1038 ;; The top level function for parsing forms is
1039 ;; edebug-read-and-maybe-wrap-form; it calls all the rest. It checks the
1040 ;; syntax a bit and leaves point at any error it finds, but otherwise
1041 ;; should appear to work like eval-defun.
1043 ;; The basic plan is to surround each expression with a call to
1044 ;; the edebug debugger together with indexes into a table of positions of
1045 ;; all expressions. Thus an expression "exp" becomes:
1047 ;; (edebug-after (edebug-before 1) 2 exp)
1049 ;; When this is evaluated, first point is moved to the beginning of
1050 ;; exp at offset 1 of the current function. The expression is
1051 ;; evaluated, which may cause more edebug calls, and then point is
1052 ;; moved to offset 2 after the end of exp.
1054 ;; The highest level expressions of the function are wrapped in a call to
1055 ;; edebug-enter, which supplies the function name and the actual
1056 ;; arguments to the function. See functions edebug-enter, edebug-before,
1057 ;; and edebug-after for more details.
1059 ;; Dynamically bound vars, left unbound, but globally declared.
1060 ;; This is to quiet the byte compiler.
1062 ;; Window data of the highest definition being wrapped.
1063 ;; This data is shared by all embedded definitions.
1078 ;; Read a form and wrap it with edebug calls, if the conditions are right.
1079 ;; Here we just catch any no-match not caught below and signal an error.
1081 ;; Run the setup hook.
1082 ;; If it gets an error, make it nil.
1088 edebug-top-window-data
1089 edebug-def-name;; make sure it is locally nil
1090 ;; I don't like these here!!
1091 edebug-&optional
1092 edebug-&rest
1093 edebug-gate
1094 edebug-best-error
1095 edebug-error-point
1096 no-match
1097 ;; Do this once here instead of several times.
1103 nil))
1106 result))
1111 def-kind
1112 defining-form-p
1113 def-name
1114 ;; These offset things don't belong here, but to support recursive
1115 ;; calls to edebug-read, they need to be here.
1116 edebug-offsets
1117 edebug-offsets-stack
1118 edebug-current-offset ; reset to nil
1119 )
1123 ;; Find out if this is a defining form from first symbol
1128 ;; This is incorrect in general!! But OK most of the time.
1133 ;;;(message "all defs: %s all forms: %s" edebug-all-defs edebug-all-forms)
1137 ;; If it is a defining form and we are edebugging defs,
1138 ;; then let edebug-list-form start it.
1144 cursor
1149 ;; Not edebugging this form, so reset the symbol's edebug
1150 ;; property to be just a marker at the definition's source code.
1151 ;; This only works for defs with simple names.
1153 ;; Also nil out dependent defs.
1160 ;; If all forms are being edebugged, explicitly wrap it.
1166 cursor
1169 nil)))
1171 ;; Not a defining form, and not edebugging.
1173 ))
1179 ;; Currently def-form sets this to nil; def-body sets it to t.
1182 ;; Return a unique symbol for the variable used to store the
1183 ;; status of interactive-p for this function.
1188 "Wrap the FORMS of a definition body."
1197 ;; Generate the enter wrapper for some forms of a definition.
1198 ;; This is not to be used for the body of other forms, e.g. `while',
1199 ;; since it wraps the list of forms with a call to `edebug-enter'.
1200 ;; Uses the dynamically bound vars edebug-def-name and edebug-def-args.
1201 ;; Do this after parsing since that may find a name.
1208 ;; Doesn't work with more than one def-body!!
1209 ;; But the list will just be reversed.
1213 ))
1222 ;; modifies edebug-offset-index and edebug-offset-list
1223 ;; accesses edebug-func-marc and buffer point
1225 edebug-offset-index
1227 edebug-offset-list)
1232 ;; Return the edebug form for the current function at offset BEFORE-INDEX
1233 ;; given FORM. Looks like:
1234 ;; (edebug-after (edebug-before BEFORE-INDEX) AFTER-INDEX FORM)
1235 ;; Also increment the offset index for subsequent use.
1238 after-index form))
1241 ;; Like edebug-make-before-and-after-form, but only after.
1246 "Return the unwrapped SEXP or return it as is if it is not wrapped.
1247 The SEXP might be the result of wrapping a body, which is a list of
1248 expressions; a `progn' form will be returned enclosing these forms."
1259 )
1260 sexp))
1263 "Return the SEXP recursively unwrapped."
1270 new-sexp)))
1274 ;; Process the defining form, starting outside the form.
1275 ;; The speclist is a generated list spec that looks like:
1276 ;; (("def-symbol" defining-form-spec-sans-&define))
1277 ;; Skip the first offset.
1281 cursor
1283 speclist))
1287 ;; Wrap a form, usually a defining form, but any evaluated one.
1288 ;; If speclist is non-nil, this is being called by edebug-defining-form.
1289 ;; Otherwise it is being called from edebug-read-and-maybe-wrap-form1.
1290 ;; This is a hack, but I haven't figured out a simpler way yet.
1292 ;; Set this marker before parsing.
1296 ;; Buffer must be current-buffer for this to work:
1301 result
1302 ;; For definitions.
1303 ;; (edebug-containing-def-name edebug-def-name)
1304 ;; Get name from form-data, if any.
1306 edebug-def-name
1307 edebug-def-args
1308 edebug-def-interactive
1309 edebug-inside-func;; whether wrapped code executes inside a function.
1310 )
1316 ;; else wrap as an enter-form.
1319 ;; Set the name here if it was not set by edebug-make-enter-wrapper.
1323 ;; Add this def as a dependent of containing def. Buggy.
1331 ;; Create a form-data-entry or modify existing entry's markers.
1332 ;; In the latter case, pointers to the entry remain eq.
1336 edebug-def-name
1337 edebug-form-begin-marker
1338 ;; Buffer must be current-buffer.
1340 ))
1342 form-data-entry edebug-def-name ;; in case name is changed
1343 form-begin form-end))
1345 ;; (message "defining: %s" edebug-def-name) (sit-for 2)
1348 ;;(debug edebug-def-name)
1350 ;; Destructively reverse edebug-offset-list and make vector from it.
1353 ;; Side effects on the property list of edebug-def-name.
1357 ;; Set up the initial window data.
1365 ;; Store the edebug data in symbol's property list.
1367 ;; A struct or vector would be better here!!
1369 nil ; clear breakpoints
1370 edebug-offset-list
1371 edebug-top-window-data
1372 ))
1373 result
1374 )))
1378 ;; Create initial frequency count vector.
1379 ;; For each stop point, the counter is incremented each time it is visited.
1385 ;; Create initial coverage vector.
1386 ;; Only need one per expression, but it is simpler to use stop points.
1392 ;; Return the instrumented form for the following form.
1393 ;; Add the point offsets to the edebug-offset-list for the form.
1399 ;; The first offset for a list form is for the list form itself.
1401 form
1405 ;; Find out if this is a defining form from first symbol.
1406 ;; An indirect spec would not work here, yet.
1409 new-cursor
1413 ;; Wrap a regular form.
1417 ;; After processing the list form, the new-cursor is left
1418 ;; with the offset after the form.
1420 )))
1424 ;; Check for constant symbols that don't get wrapped.
1427 form)
1432 ;; Anything else is self-evaluating.
1441 ;; Process the arguments of a list form given that head of form is a symbol.
1442 ;; Helper for edebug-list-form
1448 ;; It is a speclist.
1455 ; but leave it in for compatibility.
1456 ))
1457 ;; No edebug-form-spec provided.
1467 ;; Return an instrumented form built from the list form.
1468 ;; The after offset will be left in the cursor after processing the form.
1470 ;; Prevent backtracking whenever instrumenting.
1472 ;; A list form is never optional because it matches anything.
1475 ;; Skip the first offset.
1483 ;; Special case: replace (interactive-p) with variable
1493 ;; The head of a form should normally be a symbol or a lambda
1494 ;; expression but it can also be an unquote form to be filled
1495 ;; before evaluation. We evaluate the arguments anyway, on the
1496 ;; assumption that the unquote form will place a proper function
1497 ;; name (rather than a macro name).
1499 ;; Process anonymous function and args.
1500 ;; This assumes no anonymous macros.
1505 ))
1507 ;;; Matching of specs.
1515 ;;; Failure to match
1517 ;; This throws to no-match, if there are higher alternatives.
1518 ;; Otherwise it signals an error. The place of the error is found
1519 ;; with the two before- and after-offset functions.
1522 ;; Throw a no-match, or signal an error immediately if gate is active.
1523 ;; Remember this point in case we need to report this error.
1536 ;; Top level spec matching function.
1537 ;; Used also at each lower level of specs.
1539 edebug-&rest
1540 edebug-best-error
1541 edebug-error-point
1543 )
1548 ;; Match one spec, which is not a keyword &-spec.
1554 ))
1558 ;; Append results of matching the list of specs.
1559 ;; The first spec is handled and the remainder-handler handles the rest.
1567 ;; Is the spec dotted?
1572 ;; Is the form dotted?
1576 ;; Cancel dotted spec and dotted form.
1580 ;; Wrap the form in a list, (by changing the cursor??)...
1582 ;; and process normally, then unwrap the result.
1589 ;;(message "spec = %s first char = %s" spec first-char) (sit-for 1)
1603 ;; Define specs for all the symbol specs with functions used to process them.
1604 ;; Perhaps we shouldn't be doing this with edebug-form-specs since the
1605 ;; user may want to define macros or functions with the same names.
1606 ;; We could use an internal obarray for these primitive specs.
1620 ;; Less frequently used:
1621 ;; (function . edebug-match-function)
1627 ;; (nil . edebug-match-nil) not this one - special case it.
1628 ))
1632 ;; Match a symbol spec.
1637 ;; It is an indirect spec.
1639 ;; Otherwise it should be the symbol name of a function.
1640 ;; There could be a bug here - maybe need to do edebug-match bindings.
1648 ;; Special case for edebug-`.
1656 )))
1667 ;; Currently identical to edebug-match-form.
1668 ;; This is for common lisp setf-style place arguments.
1673 ;; Keep matching until one spec fails.
1685 ;; Returning nil means no no-match was thrown.
1686 nil))
1687 result
1688 ;; no-match, but don't fail; just reset cursor and return nil.
1690 nil)))
1695 ;; Reuse the &optional handler with this as the remainder handler.
1699 ;; Repeatedly use specs until failure.
1701 edebug-best-error
1702 edebug-error-point)
1707 ;; Keep matching until one spec succeeds, and return its results.
1708 ;; If none match, fail.
1709 ;; This needs to be optimized since most specs spend time here.
1718 edebug-best-error
1719 edebug-error-point)
1720 ;; Doesn't support e.g. &or symbolp &rest form
1722 ;; Match failed, so reset and try again.
1724 ;; Reset the cursor for the next match.
1726 ;; All failed.
1728 ))
1732 ;; If any specs match, then fail
1737 nil))
1738 ;; This means something matched, so it is a no match.
1740 ;; This means nothing matched, so it is OK.
1747 ;; Following specs must look like (<name> <spec>) ...
1748 ;; where <name> is the name of a keyword, and spec is its spec.
1749 ;; This really doesn't save much over the expanded form and takes time.
1751 cursor
1756 specs))))
1760 ;; Simply set the gate to prevent backtracking at this level.
1762 nil)
1766 ;; The spec is a list, but what kind of list, and what context?
1768 ;; After dotted spec but form did not contain dot,
1769 ;; so match list spec elements as if spliced in.
1773 ;; If it matched, really clear the dotted-spec flag.
1782 ;; Special case: spec quotes a symbol to match.
1783 ;; Change in future. Use "..." instead.
1788 form)
1795 ;; First offset is for the list form itself.
1796 ;; Treat nil as empty list.
1798 specs))
1802 ;; Special case: match a vector with the specs.
1811 )))
1815 ;; Match a sublist of specs.
1817 ;;edebug-best-error
1818 ;;edebug-error-point
1819 )
1821 ;; match with edebug-match-specs so edebug-best-error is not bound.
1826 ;; A failed &rest or &optional spec may leave some args.
1828 )))))
1835 ;; Since it matched, failure means immediate error, unless &optional.
1839 )))
1842 ;; There must be nothing left to match a nil.
1845 nil))
1852 ;; Match a defining form.
1853 ;; Normally, &define is interpreted specially other places.
1854 ;; This should only be called inside of a spec list to match the remainder
1855 ;; of the current list. e.g. ("lambda" &define args def-body)
1857 cursor
1859 ;; Find the last offset in the list.
1862 offsets)
1863 specs))
1866 ;; The expression must be a function.
1867 ;; This will match any list form that begins with a symbol
1868 ;; that has an edebug-form-spec beginning with &define. In
1869 ;; practice, only lambda expressions should be used.
1870 ;; I could add a &lambda specification to avoid confusion.
1877 ;; Find out if this is a defining form from first symbol.
1888 )))
1892 ;; Set the edebug-def-name bound in edebug-defining-form.
1894 ;; Maybe strings and numbers could be used.
1899 ;; Construct a new name by appending to previous name.
1901 name))
1906 ;; Set the edebug-def-name to the spec.
1909 ;; Construct a new name by appending to previous name.
1911 spec))
1912 nil)
1915 ;; set the def-args bound in edebug-defining-form
1925 ;; Like form but the form is wrapped in edebug-enter form.
1926 ;; The form is assumed to be executing outside of the function context.
1927 ;; This is a hack for now, since a def-form might execute inside as well.
1928 ;; Not to be used otherwise.
1933 ;; Like body but body is wrapped in edebug-enter form.
1934 ;; The body is assumed to be executing inside of the function context.
1935 ;; Not to be used otherwise.
1940 ;;;; Edebug Form Specs
1941 ;;; ==========================================================
1943 ;;;;* Spec for def-edebug-spec
1944 ;;; Out of date.
1947 "Return non-nil if OBJECT is a symbol with an edebug-form-spec property."
1952 ;; Top level is different from lower levels.
1957 ;; A list must have something in it, or it is nil, a symbolp
1961 (&or
1965 edebug-spec-list
1966 stringp
1969 edebug-spec-p ;; Including all the special ones e.g. form.
1970 symbolp;; a predicate
1971 ))
1974 ;;;* Emacs special forms and some functions.
1976 ;; quote expects only one argument, although it allows any number.
1979 ;; The standard defining forms.
1984 (&define name lambda-list
1987 def-body))
1988 ;; FIXME? Isn't this missing the doc-string? Cf defun.
1998 )))
2003 ;; A function-form is for an argument that may be a function or a form.
2004 ;; This specially recognizes anonymous functions quoted with quote.
2006 ;; form at the end could also handle "function",
2007 ;; but recognize it specially to avoid wrapping function forms.
2010 ;; function expects a symbol or a lambda or macro expression
2011 ;; A macro is allowed by Emacs.
2014 ;; A macro expression is a lambda expression with "macro" prepended.
2017 ;; (def-edebug-spec anonymous-form ((&or ["lambda" lambda] ["macro" macro])))
2019 ;; Standard functions that take function-forms arguments.
2026 ;; FIXME? The manual uses this form (maybe that's just for illustration?):
2027 ;; (def-edebug-spec let
2028 ;; ((&rest &or symbolp (gate symbolp &optional form))
2029 ;; body))
2032 body))
2043 form
2049 ;; Supports quotes inside backquotes,
2050 ;; but only at the top level inside unquotes.
2052 (&or
2054 ;; The simple version:
2055 ;; (backquote-form &rest backquote-form)
2056 ;; doesn't handle (a . ,b). The straightforward fix:
2057 ;; (backquote-form . [&or nil backquote-form])
2058 ;; uses up too much stack space.
2059 ;; Note that `(foo . ,@bar) is not valid, so we don't need to handle it.
2062 ;; If you use dotted forms in backquotes, replace the previous line
2063 ;; with the following. This takes quite a bit more stack space, however.
2064 ;; (backquote-form . [&or nil backquote-form])
2066 sexp))
2068 ;; Special version of backquote that instruments backquoted forms
2069 ;; destined to be evaluated, usually as the result of a
2070 ;; macroexpansion. Backquoted code can only have unquotes (, and ,@)
2071 ;; in places where list forms are allowed, and predicates. If the
2072 ;; backquote is used in a macro, unquoted code that come from
2073 ;; arguments must be instrumented, if at all, with def-form not def-body.
2075 ;; We could assume that all forms (not nested in other forms)
2076 ;; in arguments of macros should be def-forms, whether or not the macros
2077 ;; are defined with edebug-` but this would be expensive.
2079 ;; ,@ might have some problems.
2084 ;; Assume immediate quote in unquotes mean backquote at next higher level.
2089 ;; New byte compiler.
2108 ;; Anything else?
2111 ;; Some miscellaneous specs for macros in public packages.
2112 ;; Send me yours.
2114 ;; advice.el by Hans Chalupsky (hans@cs.buffalo.edu)
2120 ;; "activation" "deactivation"]
2121 name ;; name of advice
2123 )
2126 def-body))
2133 ;;; The debugger itself
2137 ;;; add minor-mode-alist entry
2140 minor-mode-alist)))
2143 ;; Stack of active functions evaluated via edebug.
2144 ;; Should be nil at the top level.
2147 ;; Index of last edebug-stack item.
2150 ;; Stack of offset indices of visited edebug sexps.
2151 ;; Should be nil at the top level.
2152 ;; Each function adds one cons. Top is modified with setcar.
2156 ;; Non-nil if edebug has already been entered at this recursive edit level.
2157 ;; This should stay nil at the top level.
2158 )
2160 ;; Should these be options?
2162 ;; Name of function to use for debugging when error or quit occurs.
2163 ;; Set this to 'debug if you want to debug edebug.
2164 )
2167 ;; Dynamically bound variables, declared globally but left unbound.
2196 ;;; Handling signals
2199 "Signal an error. Args are SIGNAL-NAME, and associated DATA.
2200 A signal name is a symbol with an `error-conditions' property
2201 that is a list of condition names.
2202 A handler for any of those names will get to handle this signal.
2203 The symbol `error' should always be one of them.
2205 DATA should be a list. Its elements are printed as part of the error message.
2206 If the signal is handled, DATA is made available to the handler.
2207 See `condition-case'.
2209 This is the Edebug replacement for the standard `signal'. It should
2210 only be active while Edebug is. It checks `debug-on-error' to see
2211 whether it should call the debugger. When execution is resumed, the
2212 error is signaled again.
2216 ;; If we reach here without another non-local exit, then send signal again.
2217 ;; i.e. the signal is not continuable, yet.
2218 ;; Avoid infinite recursion.
2222 ;;; Entering Edebug
2225 ;; Entering FUNC. The arguments are ARGS, and the body is BODY.
2226 ;; Setup edebug variables and evaluate BODY. This function is called
2227 ;; when a function evaluated with edebug-eval-top-level-form is entered.
2228 ;; Return the result of BODY.
2230 ;; Is this the first time we are entering edebug since
2231 ;; lower-level recursive-edit command?
2232 ;; More precisely, this tests whether Edebug is currently active.
2235 ;; Binding max-lisp-eval-depth here is OK,
2236 ;; but not inside an unwind-protect.
2237 ;; Doing it here also keeps it from growing too large.
2244 ;; Binding these may not be the right thing to do.
2245 ;; We want to allow the global values to be changed.
2249 ;; Lexical bindings must be uncompiled for this to work.
2254 overriding-terminal-local-map)
2256 ;; Save the outside value of executing macro. (here??)
2264 ;; within edebug unless edebug-continue-kbd-macro is
2265 ;; non-nil. Again, local binding may not be best.
2269 ;; Don't get confused by the user's keymap changes.
2275 ;; Disable command hooks. This is essential when
2276 ;; a hook function is instrumented - to avoid infinite loop.
2277 ;; This may be more than we need, however.
2281 edebug-initial-mode
2282 edebug-execution-mode)
2283 edebug-next-execution-mode nil)
2285 ;; Reset global variables in case outside value was changed.
2300 )
2309 )))
2312 "Return a cons cell describing the status of VAR's current binding.
2313 The purpose of this function is so you can properly undo
2314 subsequent changes to the same binding, by passing the status
2315 cons cell to `edebug-restore-status'. The status cons cell
2316 has the form (LOCUS . VALUE), where LOCUS can be a buffer
2317 \(for a buffer-local binding), a frame (for a frame-local binding),
2318 or nil (if the default binding is current)."
2323 "Reset VAR based on STATUS.
2324 STATUS should be a list returned by `edebug-var-status'."
2338 edebug-result)
2348 "Print MSG in *edebug-trace* before and after evaluating BODY.
2349 The result of BODY is also printed."
2351 edebug-result)
2358 "Function called to print trace info before expression evaluation.
2359 MSG is printed after `::::{ '."
2364 "Function called to print trace info after expression evaluation.
2365 MSG is printed after `::::} '."
2373 ;; Debug current function given BEFORE position.
2374 ;; Called from functions compiled with edebug-eval-top-level-form.
2375 ;; Return the before index.
2378 ;; Increment frequency count
2385 edebug-before-index)
2388 ;; Do nothing.
2389 )
2393 edebug-value
2394 ;; Debug current function given AFTER position and VALUE.
2395 ;; Called from functions compiled with edebug-eval-top-level-form.
2396 ;; Return VALUE.
2399 ;; Increment frequency count
2406 ;; Just return result.
2407 edebug-value
2409 )))
2412 ;; Do nothing but return the value.
2413 edebug-value)
2419 ;; This is not used, yet.
2433 ;; Test if a different result.
2438 ;; Dynamically declared unbound variables.
2452 ;; Don't really try to enter edebug within an eval from redisplay.
2453 edebug-value
2454 ;; Check breakpoints and pending input.
2455 ;; If edebug display should be updated, call edebug-display.
2456 ;; Return edebug-value.
2465 ;; FIXME: lexbind.
2470 ;;; (edebug-trace "exp: %s" edebug-value)
2471 ;; Test whether we should break.
2477 ;; FIXME: lexbind.
2481 ;; Delete the breakpoint.
2486 ;; Display if mode is not go, continue, or Continue-fast
2487 ;; or break, or input is pending,
2489 edebug-break
2493 edebug-value
2494 )))
2497 ;; window-start now stored with each function.
2498 ;;(defvar edebug-window-start nil)
2499 ;; Remember where each buffers' window starts between edebug calls.
2500 ;; This is to avoid spurious recentering.
2501 ;; Does this still need to be buffer-local??
2502 ;;(setq-default edebug-window-start nil)
2503 ;;(make-variable-buffer-local 'edebug-window-start)
2506 ;; Dynamically declared unbound vars
2523 ;; Emacs 19 adds an arg to mark and mark-marker.
2529 ;; The buffer holding the source has been killed.
2530 ;; Let's at least show a backtrace so the user can figure out
2531 ;; which function we're talking about.
2533 ;; Setup windows for edebug, determine mode, maybe enter recursive-edit.
2534 ;; Uses local variables of edebug-enter, edebug-before, edebug-after
2535 ;; and edebug-debugger.
2538 edebug-stop ; should we enter recursive-edit
2541 edebug-buffer-outside-point ; current point in edebug-buffer
2542 ;; window displaying edebug-buffer
2549 edebug-outside-windows ; window or screen configuration
2550 edebug-buffer-points
2552 edebug-eval-buffer ; declared here so we can kill it below
2555 edebug-trace-window
2556 edebug-trace-window-start
2568 ;; any others??
2569 )
2576 ;; Compute result string now before windows are modified.
2580 ;; Save windows now before we modify them.
2587 ;; First move the edebug buffer point to edebug-point
2588 ;; so that window start doesn't get changed when we display it.
2589 ;; I don't know if this is going to help.
2590 ;;(set-buffer edebug-buffer)
2591 ;;(goto-char edebug-point)
2593 ;; If edebug-buffer is not currently displayed,
2594 ;; first find a window for it.
2598 ;; Now display eval list, if any.
2599 ;; This is done after the pop to edebug-buffer
2600 ;; so that buffer-window correspondence is correct after quitting.
2602 ;; The evaluation list better not have deleted edebug-window-data.
2610 ;; Check whether positions are up-to-date.
2611 ;; This assumes point is never before symbol.
2615 edebug-function)
2616 )))
2621 ;; Test if there is input, not including keyboard macros.
2625 edebug-stop t)
2627 ;; (discard-input) ; is this unfriendly??
2628 ))
2629 ;; Now display arrow based on mode.
2634 ;; Display error message
2645 edebug-global-break-condition
2646 edebug-global-break-result))
2649 edebug-break-condition
2650 edebug-break-result))
2660 ;; Display result of previous evaluation.
2673 ;; not edebug-break
2684 ;; (setq edebug-execution-mode 'step)
2685 ;; (edebug-overlay-arrow) ; This doesn't always show up.
2688 ;; Reset the edebug-window-data to whatever it is now.
2692 ;; Remember window-start for edebug-buffer, if still displayed.
2698 ;; Save trace window point before restoring outside windows.
2699 ;; Could generalize this for other buffers.
2706 ;; Restore windows before continuing.
2711 ;; Restore displayed buffer points.
2712 ;; Needed even if restoring windows because
2713 ;; window-points are not restored. (should they be??)
2717 ;; Unrestore trace window's window-point.
2720 edebug-trace-window-start))
2722 ;; Unrestore edebug-buffer's window-start, if displayed.
2729 ;; Unrestore edebug-buffer's window-point.
2730 ;; Needed in addition to setting the buffer point
2731 ;; - otherwise quitting doesn't leave point as is.
2732 ;; But this causes point to not be restored at times.
2733 ;; Also, it may not be a visible window.
2734 ;; (set-window-point window edebug-point)
2735 )))
2737 ;; Unrestore edebug-buffer's point. Rerestored below.
2738 ;; (goto-char edebug-point) ;; in edebug-buffer
2739 )
2740 ;; Since we may be in a save-excursion, in case of quit,
2741 ;; reselect the outside window only.
2742 ;; Only needed if we are not recovering windows??
2747 ;; Restore current buffer always, in case application needs it.
2750 ;; Restore point, and mark.
2751 ;; Needed even if restoring windows because
2752 ;; that doesn't restore point and mark in the current buffer.
2753 ;; But don't restore point if edebug-buffer is current buffer.
2757 ;; Does zmacs-regions need to be nil while doing set-marker?
2760 ;; None of the following is done if quit or signal occurs.
2762 ;; Restore edebug-buffer's outside point.
2763 ;; (edebug-trace "restore edebug-buffer point: %s"
2764 ;; edebug-buffer-outside-point)
2767 ;; ... nothing more.
2768 )
2770 ;; Reset global variables to outside values in case they were changed.
2772 unread-command-events edebug-outside-unread-command-events
2773 overlay-arrow-position edebug-outside-o-a-p
2774 overlay-arrow-string edebug-outside-o-a-s
2775 cursor-in-echo-area edebug-outside-c-i-e-a)
2777 )))
2781 ;; Number of recursive edits started by edebug.
2782 ;; Should be 0 at the top level.
2785 ;; Value of recursion-depth when edebug was called.
2787 ;; Dynamically declared unbound vars
2800 ;; Note: here we have defvars for variables that are
2801 ;; built-in in certain versions.
2802 ;; Each defvar makes a difference
2803 ;; in versions where the variable is *not* built-in.
2805 ;; Emacs 18 FIXME
2808 ;; Emacs 19.
2816 ;; Disable byte compiler warnings about unread-command-char and -event
2817 ;; (maybe works with byte-compile-version 2.22 at least)
2826 ;; Start up a recursive edit inside of edebug.
2827 ;; The current buffer is the edebug-buffer, which is put into edebug-mode.
2828 ;; Assume that none of the variables below are buffer-local.
2830 ;; match-data must be done in the outside buffer
2835 ;;(edebug-number-of-recursions (1+ edebug-number-of-recursions))
2837 edebug-entered ; bind locally to nil
2839 edebug-backtrace-buffer ; each recursive edit gets its own
2840 ;; The window configuration may be saved and restored
2841 ;; during a recursive-edit
2842 edebug-inside-windows
2861 )
2865 ;; Declare global values local but using the same global value.
2866 ;; We could set these to the values for previous edebug call.
2870 ;; Assume no edebug command sets unread-command-char.
2874 ;; More for Emacs 19
2881 ;; Bind again to outside values.
2885 ;; Don't keep defining a kbd macro.
2889 ;; others??
2890 )
2903 ;; Do the following, even if quit occurs.
2907 ;; Could be an option to keep eval display up.
2910 ;; Remember selected-window after recursive-edit.
2911 ;; (setq edebug-inside-window (selected-window))
2915 ;; Recursive edit may have changed buffers,
2916 ;; so set it back before exiting let.
2925 )
2926 ;; gotta have a buffer to let its buffer local variables be set
2930 ;; Reset global vars to outside values, in case they have been changed.
2932 last-command-event edebug-outside-last-command-event
2933 last-command edebug-outside-last-command
2934 this-command edebug-outside-this-command
2935 unread-command-char edebug-outside-unread-command-char
2936 current-prefix-arg edebug-outside-current-prefix-arg
2937 last-input-event edebug-outside-last-input-event
2938 last-event-frame edebug-outside-last-event-frame
2939 last-nonmenu-event edebug-outside-last-nonmenu-event
2940 track-mouse edebug-outside-track-mouse
2942 standard-output edebug-outside-standard-output
2943 standard-input edebug-outside-standard-input
2944 defining-kbd-macro edebug-outside-defining-kbd-macro
2945 ))
2946 ))
2949 ;;; Display related functions
2952 ;; If pos is not visible, adjust current window to fit following context.
2953 ;;; (message "window: %s old-start: %s window-start: %s pos: %s"
2954 ;;; (selected-window) old-start (window-start) (point)) (sit-for 5)
2957 ;; First try old-start
2962 ;; (message "resetting window start") (sit-for 2)
2969 ))
2985 )
2989 ;; Set up the overlay arrow at beginning-of-line in current buffer.
2990 ;; The arrow string is derived from edebug-arrow-alist and
2991 ;; edebug-execution-mode.
3000 "Toggle the saving and restoring of all windows.
3001 Also, each time you toggle it on, the inside and outside window
3002 configurations become the same as the current configuration."
3009 edebug-save-windows))))
3019 edebug-save-windows))
3020 ;; Problem: what about outside windows that are deleted inside?
3024 "Toggle the saving and restoring of the selected window.
3025 Also, each time you toggle it on, the inside and outside window
3026 configurations become the same as the current configuration."
3030 ;; Save all outside windows except the selected one.
3031 ;; Remove (selected-window) from outside-windows.
3038 edebug-outside-windows))
3051 "Toggle the saving and restoring of windows.
3052 With prefix, toggle for just the selected window.
3053 Otherwise, toggle for all windows."
3061 "Show the debug windows and where we stopped in the program."
3065 ;; Restore the window configuration to what it last was inside.
3066 ;; But it is not always set. - experiment
3067 ;;(if edebug-inside-windows
3068 ;; (edebug-set-windows edebug-inside-windows))
3073 "Change to the outside window configuration.
3074 Use `edebug-where' to return."
3087 "Bounce the point in the outside current buffer.
3088 If prefix argument ARG is supplied, sit for that many seconds
3089 before returning. The default is one second."
3094 ;; If the buffer's currently displayed, avoid set-window-configuration.
3106 ;; Joe Wells, here is a start at your idea of adding a buffer to the internal
3107 ;; display list. Still need to use this list in edebug-display.
3113 "Toggle display of a buffer inside of edebug."
3123 ;;; Breakpoint related functions
3126 ;; Return (function . index) of the nearest edebug stop point.
3133 ;; pull out parts of edebug-data.
3135 ;; (edebug-breakpoints (car (cdr edebug-data)))
3140 ;; skip backwards until non-whitespace, or bol
3143 edebug-def-mark))
3144 len i)
3145 ;; the offsets are in order so we can do a linear search
3152 ;; return the relevant info
3155 edebug-def-name)
3156 )))
3160 "Move point to the next breakpoint, or first if none past point."
3168 ;; pull out parts of edebug-data
3172 breakpoint)
3182 ;; goto the first breakpoint
3195 ))))))
3199 "Modify the breakpoint for the form at point or after it.
3200 Set it if FLAG is non-nil, clear it otherwise. Then move to that point.
3201 If CONDITION or TEMPORARY are non-nil, add those attributes to
3202 the breakpoint."
3209 ;; pull out parts of edebug-data
3213 present)
3214 ;; delete it either way
3219 ;; add it to the list and resort
3224 edebug-breakpoints) '<))
3227 edebug-def-name condition)
3235 ))))
3238 "Set the breakpoint of nearest sexp.
3239 With prefix argument, make it a temporary breakpoint."
3244 "Clear the breakpoint of nearest sexp."
3250 "Set `edebug-global-break-condition' to EXPRESSION."
3256 "Global Condition: " initial read-expression-map t
3263 ;;; Mode switching functions
3266 ;; Set the edebug mode to MODE.
3267 ;; Display SHORTMSG, or MSG if not within edebug.
3272 ;; Continue execution
3274 ;; This is not terribly useful!!
3282 "Proceed to next stop point."
3287 "Proceed to next `after' stop point."
3292 "Go, evaluating until break.
3293 With prefix ARG, set temporary break at current point and go."
3300 "Go, evaluating without debugging.
3301 You can use `edebug-stop', or any editing command, to stop."
3308 "Begin trace mode.
3309 Pauses for `edebug-sit-for-seconds' at each stop point."
3314 "Trace with no wait at each step.
3315 Updates the display at each stop point, but does not pause."
3321 "Begin continue mode.
3322 Pauses for `edebug-sit-for-seconds' at each break point."
3328 "Trace with no wait at each step.
3329 Updates the display at each break point, but does not pause."
3334 ;; ------------------------------------------------------------
3335 ;; The following use the mode changing commands and breakpoints.
3339 "Proceed to first stop-point at or after current position of point."
3345 "Stop execution and do not continue.
3346 Useful for exiting from trace or continue loop."
3352 "Proceed to the exit of the next expression to be evaluated."
3360 "Proceed from the current point to the end of the ARGth sexp ahead.
3361 If there are not ARG sexps ahead, then do `edebug-step-out'."
3365 ;; Call forward-sexp repeatedly until done or failure.
3370 )))
3373 "Proceed from the current point to the end of the containing sexp.
3374 If there is no containing sexp that is not the top level defun,
3375 go to the end of the last sexp, or if that is the same point, then step."
3381 ;; Is there still a containing expression?
3385 ;; At top level - 1, so first check if there are more sexps at this level.
3387 ;; (up-list 1)
3392 )))))
3395 ;; Func should be a function symbol.
3396 ;; Return the function symbol, or nil if not instrumented.
3400 ;; It is uninstrumented, so instrument it.
3404 func))
3407 func)
3415 func))))))
3418 "Instrument the definition of the function or macro about to be called.
3419 Do this when stopped before the form or it will be too late.
3420 One side effect of using this command is that the next time the
3421 function or macro is called, Edebug will be called there as well."
3436 "Step into the definition of the function or macro about to be called.
3437 This first does `edebug-instrument-callee' to ensure that it is
3438 instrumented. Then it does `edebug-on-entry' and switches to `go' mode."
3447 "Cause Edebug to stop when FUNCTION is called.
3448 With prefix argument, make this temporary so it is automatically
3449 canceled the first time the function is entered."
3451 ;; Could store this in the edebug data instead.
3462 ;; Also need edebug-cancel-debug-on-entry
3465 "Request FUNCTION to invoke debugger each time it is called.
3466 If the user continues, FUNCTION's execution proceeds.
3467 Works by modifying the definition of FUNCTION,
3468 which must be written in Lisp, not predefined.
3469 Use `cancel-debug-on-entry' to cancel the effect of this command.
3470 Redefining FUNCTION also does that.
3472 This version is from Edebug. If the function is instrumented for
3473 Edebug, it calls `edebug-on-entry'."
3482 "Set mode to Go-nonstop, and exit to top-level.
3483 This is useful for exiting even if `unwind-protect' code may be executed."
3489 ;;(defun edebug-exit-out ()
3490 ;; "Go until the current function exits."
3491 ;; (interactive)
3492 ;; (edebug-set-mode 'exiting "Exit..."))
3495 ;;; The following initial mode setting definitions are not used yet.
3505 )
3510 "Ask for the initial mode of the enclosing function.
3511 The mode is requested via the key that would be used to set the mode in
3512 edebug-mode."
3516 edebug-mode-map))
3518 edebug-initial-mode))
3521 "Change initial edebug mode for %s from %s (%s) to (enter key): "
3522 this-function
3523 old-mode
3526 keymap 'firstonly
3527 ))))
3529 )
3536 this-function mode))
3538 )))
3540 ;;; Evaluation of expressions
3545 "Evaluate an expression list in the outside context.
3546 Return the result of the last expression."
3550 ;; After excursion, we will
3551 ;; restore to current window configuration.
3554 ;; Restore outside windows.
3558 ;; (use-local-map edebug-outside-map)
3560 ;; Restore outside context.
3577 ;; Get the values out of the saved statuses.
3581 ;; See edebug-display
3585 )
3594 ;; Back to edebug-buffer. Restore rest of inside context.
3595 ;; (use-local-map edebug-inside-map)
3597 ;; Restore inside windows.
3600 ;; Save values that may have been changed.
3602 edebug-outside-last-command-event last-command-event
3603 edebug-outside-last-command last-command
3604 edebug-outside-this-command this-command
3605 edebug-outside-unread-command-char unread-command-char
3606 edebug-outside-unread-command-events unread-command-events
3607 edebug-outside-current-prefix-arg current-prefix-arg
3608 edebug-outside-last-input-event last-input-event
3609 edebug-outside-last-event-frame last-event-frame
3610 edebug-outside-last-nonmenu-event last-nonmenu-event
3611 edebug-outside-track-mouse track-mouse
3612 edebug-outside-standard-output standard-output
3613 edebug-outside-standard-input standard-input
3615 edebug-outside-executing-macro executing-kbd-macro
3616 edebug-outside-defining-kbd-macro defining-kbd-macro
3618 edebug-outside-o-a-p overlay-arrow-position
3619 edebug-outside-o-a-s overlay-arrow-string
3620 edebug-outside-c-i-e-a cursor-in-echo-area
3623 )
3625 ;; Restore the outside saved values; don't alter
3626 ;; the outside binding loci.
3632 ))
3637 ;; Are there cl lexical variables active?
3640 edebug-expr)
3641 lexical-binding))
3644 ;; Evaluate EXPR safely.
3645 ;; If there is an error, a string is returned describing the error.
3652 ;;; Printing
3656 ;; Print an error message like command level does.
3657 ;; This also prints the error name if it has no error-message.
3662 ;; continuing after an error may
3663 ;; complain about edebug-arg. why??
3668 ;; Alternatively, we could change the definition of
3669 ;; edebug-safe-prin1-to-string to only use these if defined.
3691 "Print the previous result."
3695 ;;; Read, Eval and Print
3704 "Evaluate an expression in the outside environment.
3705 If interactive, prompt for the expression.
3706 Print result in minibuffer."
3708 "Eval: " nil read-expression-map t
3717 "Evaluate sexp before point in the outside environment.
3718 Print value in minibuffer."
3723 "Evaluate sexp before point in outside environment; insert value.
3724 This prints the value into current buffer."
3732 ;; princ the string to get rid of quotes.
3735 ))
3737 ;;; Edebug Minor Mode
3739 ;; FIXME eh?
3743 ;; Global GUD bindings for all emacs-lisp-mode buffers.
3752 ;; control
3762 ;;(define-key map "f" 'edebug-forward) not implemented
3770 ;; quitting and stopping
3776 ;; breakpoints
3783 ;; evaluation
3789 ;; views
3796 ;; misc
3802 ;; statistics
3805 ;; GUD bindings
3815 map))
3817 ;; Autoloading these global bindings doesn't make sense because
3818 ;; they cannot be used anyway unless Edebug is already loaded and active.
3834 ;; breakpoints
3840 ;; views
3844 ;; quitting
3849 ;; statistics
3851 map)
3859 "Describe `edebug-mode'."
3864 "Mode for Emacs Lisp buffers while in Edebug.
3866 In addition to all Emacs Lisp commands (except those that modify the
3867 buffer) there are local and global key bindings to several Edebug
3871 Also see bindings for the eval list buffer *edebug* in `edebug-eval-mode'.
3873 The edebug buffer commands:
3876 Global commands prefixed by `global-edebug-prefix':
3879 Options:
3880 `edebug-setup-hook'
3881 `edebug-all-defs'
3882 `edebug-all-forms'
3883 `edebug-save-windows'
3884 `edebug-save-displayed-buffer-points'
3885 `edebug-initial-mode'
3886 `edebug-trace'
3887 `edebug-test-coverage'
3888 `edebug-continue-kbd-macro'
3889 `edebug-print-length'
3890 `edebug-print-level'
3891 `edebug-print-circle'
3892 `edebug-on-error'
3893 `edebug-on-quit'
3894 `edebug-on-signal'
3895 `edebug-unwrap-results'
3896 `edebug-global-break-condition'"
3897 ;; If the user kills the buffer in which edebug is currently active,
3898 ;; exit to top level, because the edebug command loop can't usefully
3899 ;; continue running in such a case.
3904 "Used on `kill-buffer-hook' when Edebug is operating in a buffer of Lisp code."
3909 ;;; edebug eval list mode
3911 ;; A list of expressions and their evaluations is displayed in *edebug*.
3914 "Return a list of evaluations of `edebug-eval-list'."
3915 ;; Assumes in outside environment.
3916 ;; Don't do any edebug things now.
3922 ;; Assumes edebug-eval-buffer exists.
3936 ))
3944 ;; Should generalize this to be callable outside of edebug
3945 ;; with calls in user functions, e.g. (edebug-eval-display)
3948 "Display expressions and evaluations in EDEBUG-EVAL-RESULT-LIST.
3949 It modifies the context by popping up the eval display."
3954 )))
3957 "Redisplay eval list in outside environment.
3958 May only be called from within `edebug-recursive-edit'."
3962 ))
3972 "Replace the evaluation list with the sexps now in the eval buffer."
3975 new-list)
3977 ;; get the first expression
3999 "Delete the item under point and redisplay."
4000 ;; could add arg to do repeatedly
4020 map)
4026 "Mode for evaluation list buffer while in Edebug.
4028 In addition to all Interactive Emacs Lisp commands there are local and
4029 global key bindings to several Edebug specific commands. E.g.
4033 Eval list buffer commands:
4036 Global commands prefixed by `global-edebug-prefix':
4039 ;;; Interface with standard debugger.
4041 ;; (setq debugger 'edebug) ; to use the edebug debugger
4042 ;; (setq debugger 'debug) ; use the standard debugger
4044 ;; Note that debug and its utilities must be byte-compiled to work,
4045 ;; since they depend on the backtrace looking a certain way. But
4046 ;; edebug is not dependent on this, yet.
4049 "Replacement for `debug'.
4050 If we are running an edebugged function, show where we last were.
4051 Otherwise call `debug' normally."
4052 ;; (message "entered: %s depth: %s edebug-recursion-depth: %s"
4053 ;; edebug-entered (recursion-depth) edebug-recursion-depth) (sit-for 1)
4058 ;; Bind variables required by edebug-display
4060 edebug-breakpoints
4061 edebug-break-data
4062 edebug-break-condition
4063 edebug-global-break
4065 )
4068 nil
4069 edebug-value))
4071 ;; Otherwise call debug normally.
4072 ;; Still need to remove extraneous edebug calls from stack.
4074 ))
4078 "Display a non-working backtrace. Better than nothing..."
4084 ;; else, could just display edebug-backtrace-buffer
4085 )
4090 last-ok-point)
4093 ;; Clean up the backtrace.
4094 ;; Not quite right for current edebug scheme.
4101 ;; Delete interspersed edebug internals.
4106 ;; Previous lines may contain code, so just delete this line
4114 )))
4115 )))))
4117 \f
4118 ;;; Trace display
4121 "In buffer BUF-NAME, display FMT and ARGS at the end and make it visible.
4122 The buffer is created if it does not exist.
4123 You must include newlines in FMT to break lines, but one newline is appended."
4124 ;; e.g.
4125 ;; (edebug-trace-display "*trace-point*"
4126 ;; "saving: point = %s window-start = %s"
4127 ;; (point) (window-start))
4131 buf-window)
4132 ;; (message "before pop-to-buffer") (sit-for 1)
4138 ;; Make it visible.
4142 ;; (set-window-point buf-window (point))
4143 ;; (edebug-sit-for 0)
4147 buf-name)
4151 "Convenience call to `edebug-trace-display' using `edebug-trace-buffer'."
4154 \f
4155 ;;; Frequency count and coverage
4157 ;; FIXME should this use overlays instead?
4158 ;; Definitely, IMO. The current business with undo in
4159 ;; edebug-temp-display-freq-count is horrid.
4161 "Display the frequency count data for each line of the current definition.
4162 The frequency counts are inserted as comment lines after each line,
4163 and you can undo all insertions with one `undo' command.
4165 The counts are inserted starting under the `(' before an expression
4166 or the `)' after an expression, or on the last char of a symbol.
4167 The counts are only displayed when they differ from previous counts on
4168 the same line.
4170 If coverage is being tested, whenever all known results of an expression
4171 are `eq', the char `=' will be appended after the count
4172 for that expression. Note that this is always the case for an
4173 expression only evaluated once.
4175 To clear the frequency count and coverage data for a definition,
4176 reinstrument it."
4190 )
4192 ;; Traverse in reverse order so offsets are correct.
4194 ;; Start at last expression in line.
4198 last-index i)
4200 ;; Find all indexes on same line.
4203 ;; Insert all the indices for this line.
4206 first-index i ; really last index for line above this one.
4209 ;; i == first-index still
4229 ;; FIXME this does not work very well. Eg if you press an arrow key,
4230 ;; or make a mouse-click, it fails with "Non-character input-event".
4232 "Temporarily display the frequency count data for the current definition.
4233 It is removed when you hit any char."
4234 ;; This seems not to work with Emacs 18.59. It undoes too far.
4240 ;; Yuck! This doesn't seem to work at all for me.
4243 \f
4244 ;;; Menus
4250 ;; We have to require easymenu (even for Emacs 18) just so
4251 ;; the easy-menu-define macro call is compiled correctly.
4265 "----"
4270 "----"
4302 "----"
4312 ))
4315 \f
4316 ;;; Emacs version specific code
4324 "Set a conditional breakpoint at nearest sexp.
4325 The condition is evaluated in the outside context.
4326 With prefix argument, make it a temporary breakpoint."
4327 ;; (interactive "P\nxCondition: ")
4330 current-prefix-arg
4331 ;; Read condition as follows; getting previous condition is cumbersome:
4343 "Condition: " initial read-expression-map t
4350 \f
4351 ;;; Byte-compiler
4353 ;; Extension for bytecomp to resolve undefined function references.
4354 ;; Requires new byte compiler.
4356 ;; Reenable byte compiler warnings about unread-command-char and -event.
4357 ;; Disabled before edebug-recursive-edit.
4361 edebug-unread-command-char-warning)))
4364 ;; The body of eval-when-compile seems to get evaluated with eval-defun.
4365 ;; We only want to evaluate when actually byte compiling.
4366 ;; But it is OK to evaluate as long as byte-compiler has been loaded.
4370 "Say it is OK for the named functions to be unresolved."
4376 byte-compile-unresolved-functions))))
4377 funcs)
4378 nil)
4381 "Say it is OK for the named variables to be referenced."
4387 vars)
4388 nil)
4391 "Say it is OK for the named variables to be assigned."
4397 vars)
4398 nil)
4402 edebug-gensym ;; also in cl.el
4403 ;; Interfaces to standard functions.
4404 edebug-original-eval-defun
4405 edebug-original-read
4406 edebug-get-buffer-window
4407 edebug-mark
4408 edebug-mark-marker
4409 edebug-input-pending-p
4410 edebug-sit-for
4411 edebug-prin1-to-string
4412 edebug-format
4413 ;; lemacs
4414 zmacs-deactivate-region
4415 popup-menu
4416 ;; CL
4417 cl-macroexpand-all
4418 ;; And believe it or not, the byte compiler doesn't know about:
4419 byte-compile-resolve-functions
4420 ))
4424 read-expression-map))
4429 )))
4431 \f
4432 ;;; Autoloading of Edebug accessories
4434 ;; edebug-cl-read and cl-read are available from liberte@cs.uiuc.edu
4438 ;; The following causes edebug-cl-read to be loaded when you load cl-read.el.
4442 \f
4443 ;;; Finalize Loading
4445 ;; Finally, hook edebug into the rest of Emacs.
4446 ;; There are probably some other things that could go here.
4448 ;; Install edebug read and eval functions.
4453 ;;; edebug.el ends here