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This commit is contained in:
Joakim Verona 2012-09-10 16:03:53 +02:00
commit b035a30e5c
185 changed files with 5965 additions and 6281 deletions

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@ -53,6 +53,7 @@ FORMS once.
Return a list of the total elapsed time for execution, the number of
garbage collections that ran, and the time taken by garbage collection.
See also `benchmark-run-compiled'."
(declare (indent 1) (debug t))
(unless (natnump repetitions)
(setq forms (cons repetitions forms)
repetitions 1))
@ -69,8 +70,6 @@ See also `benchmark-run-compiled'."
`(benchmark-elapse ,@forms))
(- gcs-done ,gcs)
(- gc-elapsed ,gc)))))
(put 'benchmark-run 'edebug-form-spec t)
(put 'benchmark-run 'lisp-indent-function 2)
;;;###autoload
(defmacro benchmark-run-compiled (&optional repetitions &rest forms)
@ -78,6 +77,7 @@ See also `benchmark-run-compiled'."
This is like `benchmark-run', but what is timed is a funcall of the
byte code obtained by wrapping FORMS in a `lambda' and compiling the
result. The overhead of the `lambda's is accounted for."
(declare (indent 1) (debug t))
(unless (natnump repetitions)
(setq forms (cons repetitions forms)
repetitions 1))
@ -96,8 +96,6 @@ result. The overhead of the `lambda's is accounted for."
(funcall ,lambda-code))))
`(benchmark-elapse (funcall ,code)))
(- gcs-done ,gcs) (- gc-elapsed ,gc)))))
(put 'benchmark-run-compiled 'edebug-form-spec t)
(put 'benchmark-run-compiled 'lisp-indent-function 2)
;;;###autoload
(defun benchmark (repetitions form)

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@ -185,11 +185,10 @@ The return value is undefined.
((and (featurep 'cl)
(memq (car x) ;C.f. cl-do-proclaim.
'(special inline notinline optimize warn)))
(if (null (stringp docstring))
(push (list 'declare x) body)
(setcdr body (cons (list 'declare x) (cdr body))))
(push (list 'declare x)
(if (stringp docstring) (cdr body) body))
nil)
(t (message "Warning: Unknown defun property %S in %S"
(t (message "Warning: Unknown defun property `%S' in %S"
(car x) name)))))
decls))
(def (list 'defalias

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@ -249,8 +249,7 @@ Remove from SYMBOL's plist the property PROPNAME and its value.
;;;***
;;;### (autoloads (cl--compiler-macro-cXXr cl--compiler-macro-list*
;;;;;; cl--compiler-macro-adjoin cl-defsubst cl-compiler-macroexpand
;;;### (autoloads (cl--compiler-macro-adjoin cl-defsubst cl-compiler-macroexpand
;;;;;; cl-define-compiler-macro cl-assert cl-check-type cl-typep
;;;;;; cl-deftype cl-defstruct cl-callf2 cl-callf cl-letf* cl-letf
;;;;;; cl-rotatef cl-shiftf cl-remf cl-psetf cl-declare cl-the cl-locally
@ -260,9 +259,20 @@ Remove from SYMBOL's plist the property PROPNAME and its value.
;;;;;; cl-do cl-loop cl-return-from cl-return cl-block cl-etypecase
;;;;;; cl-typecase cl-ecase cl-case cl-load-time-value cl-eval-when
;;;;;; cl-destructuring-bind cl-function cl-defmacro cl-defun cl-gentemp
;;;;;; cl-gensym) "cl-macs" "cl-macs.el" "a1ca04b3f2acc7c9b06f45ef5486d443")
;;;;;; cl-gensym cl--compiler-macro-cXXr cl--compiler-macro-list*)
;;;;;; "cl-macs" "cl-macs.el" "00526d56a1062b9c308cf37b59374f2b")
;;; Generated autoloads from cl-macs.el
(autoload 'cl--compiler-macro-list* "cl-macs" "\
\(fn FORM ARG &rest OTHERS)" nil nil)
(autoload 'cl--compiler-macro-cXXr "cl-macs" "\
\(fn FORM X)" nil nil)
(autoload 'cl-gensym "cl-macs" "\
Generate a new uninterned symbol.
The name is made by appending a number to PREFIX, default \"G\".
@ -659,6 +669,8 @@ value, that slot cannot be set via `setf'.
(put 'cl-defstruct 'doc-string-elt '2)
(put 'cl-defstruct 'lisp-indent-function '1)
(autoload 'cl-deftype "cl-macs" "\
Define NAME as a new data type.
The type name can then be used in `cl-typecase', `cl-check-type', etc.
@ -722,16 +734,6 @@ surrounded by (cl-block NAME ...).
\(fn FORM A LIST &rest KEYS)" nil nil)
(autoload 'cl--compiler-macro-list* "cl-macs" "\
\(fn FORM ARG &rest OTHERS)" nil nil)
(autoload 'cl--compiler-macro-cXXr "cl-macs" "\
\(fn FORM X)" nil nil)
;;;***
;;;### (autoloads (cl-tree-equal cl-nsublis cl-sublis cl-nsubst-if-not

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@ -58,6 +58,33 @@
;;; Initialization.
;; Place compiler macros at the beginning, otherwise uses of the corresponding
;; functions can lead to recursive-loads that prevent the calls from
;; being optimized.
;;;###autoload
(defun cl--compiler-macro-list* (_form arg &rest others)
(let* ((args (reverse (cons arg others)))
(form (car args)))
(while (setq args (cdr args))
(setq form `(cons ,(car args) ,form)))
form))
;;;###autoload
(defun cl--compiler-macro-cXXr (form x)
(let* ((head (car form))
(n (symbol-name (car form)))
(i (- (length n) 2)))
(if (not (string-match "c[ad]+r\\'" n))
(if (and (fboundp head) (symbolp (symbol-function head)))
(cl--compiler-macro-cXXr (cons (symbol-function head) (cdr form))
x)
(error "Compiler macro for cXXr applied to non-cXXr form"))
(while (> i (match-beginning 0))
(setq x (list (if (eq (aref n i) ?a) 'car 'cdr) x))
(setq i (1- i)))
x)))
;;; Some predicates for analyzing Lisp forms.
;; These are used by various
;; macro expanders to optimize the results in certain common cases.
@ -366,9 +393,14 @@ its argument list allows full Common Lisp conventions."
(mapcar (lambda (x)
(cond
((symbolp x)
(if (eq ?\& (aref (symbol-name x) 0))
(setq state x)
(make-symbol (upcase (symbol-name x)))))
(let ((first (aref (symbol-name x) 0)))
(if (eq ?\& first)
(setq state x)
;; Strip a leading underscore, since it only
;; means that this argument is unused.
(make-symbol (upcase (if (eq ?_ first)
(substring (symbol-name x) 1)
(symbol-name x)))))))
((not (consp x)) x)
((memq state '(nil &rest)) (cl--make-usage-args x))
(t ;(VAR INITFORM SVAR) or ((KEYWORD VAR) INITFORM SVAR).
@ -452,7 +484,13 @@ its argument list allows full Common Lisp conventions."
(let ((arg (pop args)))
(or (consp arg) (setq arg (list arg)))
(let* ((karg (if (consp (car arg)) (caar arg)
(intern (format ":%s" (car arg)))))
(let ((name (symbol-name (car arg))))
;; Strip a leading underscore, since it only
;; means that this argument is unused, but
;; shouldn't affect the key's name (bug#12367).
(if (eq ?_ (aref name 0))
(setq name (substring name 1)))
(intern (format ":%s" name)))))
(varg (if (consp (car arg)) (cl-cadar arg) (car arg)))
(def (if (cdr arg) (cadr arg)
(or (car cl--bind-defs) (cadr (assq varg cl--bind-defs)))))
@ -1425,8 +1463,15 @@ Valid clauses are:
cl--loop-accum-var))))
(defun cl--loop-build-ands (clauses)
"Return various representations of (and . CLAUSES).
CLAUSES is a list of Elisp expressions, where clauses of the form
\(progn E1 E2 E3 .. t) are the focus of particular optimizations.
The return value has shape (COND BODY COMBO)
such that COMBO is equivalent to (and . CLAUSES)."
(let ((ands nil)
(body nil))
;; Look through `clauses', trying to optimize (progn ,@A t) (progn ,@B) ,@C
;; into (progn ,@A ,@B) ,@C.
(while clauses
(if (and (eq (car-safe (car clauses)) 'progn)
(eq (car (last (car clauses))) t))
@ -1437,6 +1482,7 @@ Valid clauses are:
(cl-cdadr clauses)
(list (cadr clauses))))
(cddr clauses)))
;; A final (progn ,@A t) is moved outside of the `and'.
(setq body (cdr (butlast (pop clauses)))))
(push (pop clauses) ands)))
(setq ands (or (nreverse ands) (list t)))
@ -1905,8 +1951,6 @@ See Info node `(cl)Declarations' for details."
(cl-do-proclaim (pop specs) nil)))
nil)
;;; The standard modify macros.
;; `setf' is now part of core Elisp, defined in gv.el.
@ -1929,7 +1973,7 @@ before assigning any PLACEs to the corresponding values.
(or p (error "Odd number of arguments to cl-psetf"))
(pop p))
(if simple
`(progn (setf ,@args) nil)
`(progn (setq ,@args) nil)
(setq args (reverse args))
(let ((expr `(setf ,(cadr args) ,(car args))))
(while (setq args (cddr args))
@ -2119,7 +2163,7 @@ one keyword is supported, `:read-only'. If this has a non-nil
value, that slot cannot be set via `setf'.
\(fn NAME SLOTS...)"
(declare (doc-string 2)
(declare (doc-string 2) (indent 1)
(debug
(&define ;Makes top-level form not be wrapped.
[&or symbolp
@ -2597,14 +2641,6 @@ surrounded by (cl-block NAME ...).
`(if (cl-member ,a ,list ,@keys) ,list (cons ,a ,list))
form))
;;;###autoload
(defun cl--compiler-macro-list* (_form arg &rest others)
(let* ((args (reverse (cons arg others)))
(form (car args)))
(while (setq args (cdr args))
(setq form `(cons ,(car args) ,form)))
form))
(defun cl--compiler-macro-get (_form sym prop &optional def)
(if def
`(cl-getf (symbol-plist ,sym) ,prop ,def)
@ -2616,21 +2652,6 @@ surrounded by (cl-block NAME ...).
(cl--make-type-test temp (cl--const-expr-val type)))
form))
;;;###autoload
(defun cl--compiler-macro-cXXr (form x)
(let* ((head (car form))
(n (symbol-name (car form)))
(i (- (length n) 2)))
(if (not (string-match "c[ad]+r\\'" n))
(if (and (fboundp head) (symbolp (symbol-function head)))
(cl--compiler-macro-cXXr (cons (symbol-function head) (cdr form))
x)
(error "Compiler macro for cXXr applied to non-cXXr form"))
(while (> i (match-beginning 0))
(setq x (list (if (eq (aref n i) ?a) 'car 'cdr) x))
(setq i (1- i)))
x)))
(dolist (y '(cl-first cl-second cl-third cl-fourth
cl-fifth cl-sixth cl-seventh
cl-eighth cl-ninth cl-tenth

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@ -48,6 +48,39 @@ the middle is discarded, and just the beginning and end are displayed."
:group 'debugger
:version "21.1")
(defcustom debugger-bury-or-kill 'bury
"How to proceed with the debugger buffer when exiting `debug'.
The value used here affects the behavior of operations on any
window previously showing the debugger buffer.
`nil' means that if its window is not deleted when exiting the
debugger, invoking `switch-to-prev-buffer' will usually show
the debugger buffer again.
`append' means that if the window is not deleted, the debugger
buffer moves to the end of the window's previous buffers so
it's less likely that a future invocation of
`switch-to-prev-buffer' will switch to it. Also, it moves the
buffer to the end of the frame's buffer list.
`bury' means that if the window is not deleted, its buffer is
removed from the window's list of previous buffers. Also, it
moves the buffer to the end of the frame's buffer list. This
value provides the most reliable remedy to not have
`switch-to-prev-buffer' switch to the debugger buffer again
without killing the buffer.
`kill' means to kill the debugger buffer.
The value used here is passed to `quit-restore-window'."
:type '(choice
(const :tag "Keep alive" nil)
(const :tag "Append" 'append)
(const :tag "Bury" 'bury)
(const :tag "Kill" 'kill))
:group 'debugger
:version "24.2")
(defvar debug-function-list nil
"List of functions currently set for debug on entry.")
@ -60,6 +93,9 @@ the middle is discarded, and just the beginning and end are displayed."
(defvar debugger-old-buffer nil
"This is the buffer that was current when the debugger was entered.")
(defvar debugger-previous-window nil
"This is the window last showing the debugger buffer.")
(defvar debugger-previous-backtrace nil
"The contents of the previous backtrace (including text properties).
This is to optimize `debugger-make-xrefs'.")
@ -133,7 +169,7 @@ first will be printed into the backtrace buffer."
(with-current-buffer (get-buffer "*Backtrace*")
(list major-mode (buffer-string)))))
(debugger-buffer (get-buffer-create "*Backtrace*"))
(debugger-old-buffer (current-buffer))
(debugger-window nil)
(debugger-step-after-exit nil)
(debugger-will-be-back nil)
;; Don't keep reading from an executing kbd macro!
@ -184,78 +220,63 @@ first will be printed into the backtrace buffer."
(cursor-in-echo-area nil))
(unwind-protect
(save-excursion
(save-window-excursion
(with-no-warnings
(setq unread-command-char -1))
(when (eq (car debugger-args) 'debug)
;; Skip the frames for backtrace-debug, byte-code,
;; and implement-debug-on-entry.
(backtrace-debug 4 t)
;; Place an extra debug-on-exit for macro's.
(when (eq 'lambda (car-safe (cadr (backtrace-frame 4))))
(backtrace-debug 5 t)))
(pop-to-buffer debugger-buffer)
(debugger-mode)
(debugger-setup-buffer debugger-args)
(when noninteractive
;; If the backtrace is long, save the beginning
;; and the end, but discard the middle.
(when (> (count-lines (point-min) (point-max))
debugger-batch-max-lines)
(goto-char (point-min))
(forward-line (/ 2 debugger-batch-max-lines))
(let ((middlestart (point)))
(goto-char (point-max))
(forward-line (- (/ 2 debugger-batch-max-lines)
debugger-batch-max-lines))
(delete-region middlestart (point)))
(insert "...\n"))
(with-no-warnings
(setq unread-command-char -1))
(when (eq (car debugger-args) 'debug)
;; Skip the frames for backtrace-debug, byte-code,
;; and implement-debug-on-entry.
(backtrace-debug 4 t)
;; Place an extra debug-on-exit for macro's.
(when (eq 'lambda (car-safe (cadr (backtrace-frame 4))))
(backtrace-debug 5 t)))
(pop-to-buffer
debugger-buffer
`((display-buffer-reuse-window
display-buffer-in-previous-window)
. (,(when debugger-previous-window
`(previous-window . ,debugger-previous-window)))))
(setq debugger-window (selected-window))
(setq debugger-previous-window debugger-window)
(debugger-mode)
(debugger-setup-buffer debugger-args)
(when noninteractive
;; If the backtrace is long, save the beginning
;; and the end, but discard the middle.
(when (> (count-lines (point-min) (point-max))
debugger-batch-max-lines)
(goto-char (point-min))
(message "%s" (buffer-string))
(kill-emacs -1))
(forward-line (/ 2 debugger-batch-max-lines))
(let ((middlestart (point)))
(goto-char (point-max))
(forward-line (- (/ 2 debugger-batch-max-lines)
debugger-batch-max-lines))
(delete-region middlestart (point)))
(insert "...\n"))
(goto-char (point-min))
(message "%s" (buffer-string))
(kill-emacs -1))
(message "")
(let ((standard-output nil)
(buffer-read-only t))
(message "")
(let ((standard-output nil)
(buffer-read-only t))
(message "")
;; Make sure we unbind buffer-read-only in the right buffer.
(save-excursion
(recursive-edit)))))
;; Kill or at least neuter the backtrace buffer, so that users
;; don't try to execute debugger commands in an invalid context.
(if (get-buffer-window debugger-buffer 0)
;; Still visible despite the save-window-excursion? Maybe it
;; it's in a pop-up frame. It would be annoying to delete and
;; recreate it every time the debugger stops, so instead we'll
;; erase it (and maybe hide it) but keep it alive.
(with-current-buffer debugger-buffer
(with-selected-window (get-buffer-window debugger-buffer 0)
(when (and (window-dedicated-p (selected-window))
(not debugger-will-be-back))
;; If the window is not dedicated, burying the buffer
;; will mean that the frame created for it is left
;; around showing some random buffer, and next time we
;; pop to the debugger buffer we'll create yet
;; another frame.
;; If debugger-will-be-back is non-nil, the frame
;; would need to be de-iconified anyway immediately
;; after when we re-enter the debugger, so iconifying it
;; here would cause flashing.
;; Drew Adams is not happy with this: he wants to frame
;; to be left at the top-level, still working on how
;; best to do that.
(bury-buffer))))
(unless debugger-previous-state
(kill-buffer debugger-buffer)))
;; Restore the previous state of the debugger-buffer, in case we were
;; in a recursive invocation of the debugger.
(when (buffer-live-p debugger-buffer)
(with-current-buffer debugger-buffer
(let ((inhibit-read-only t))
(erase-buffer)
(if (null debugger-previous-state)
(fundamental-mode)
(insert (nth 1 debugger-previous-state))
(funcall (nth 0 debugger-previous-state))))))
;; Make sure we unbind buffer-read-only in the right buffer.
(save-excursion
(recursive-edit))))
(when (and (window-live-p debugger-window)
(eq (window-buffer debugger-window) debugger-buffer))
;; Unshow debugger-buffer.
(quit-restore-window debugger-window debugger-bury-or-kill))
;; Restore previous state of debugger-buffer in case we were
;; in a recursive invocation of the debugger, otherwise just
;; erase the buffer and put it into fundamental mode.
(when (buffer-live-p debugger-buffer)
(with-current-buffer debugger-buffer
(let ((inhibit-read-only t))
(erase-buffer)
(if (null debugger-previous-state)
(fundamental-mode)
(insert (nth 1 debugger-previous-state))
(funcall (nth 0 debugger-previous-state))))))
(with-timeout-unsuspend debugger-with-timeout-suspend)
(set-match-data debugger-outer-match-data)))
;; Put into effect the modified values of these variables

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@ -431,6 +431,61 @@ if that value is non-nil."
(add-hook 'completion-at-point-functions
'lisp-completion-at-point nil 'local))
;;; Emacs Lisp Byte-Code mode
(eval-and-compile
(defconst emacs-list-byte-code-comment-re
(concat "\\(#\\)@\\([0-9]+\\) "
;; Make sure it's a docstring and not a lazy-loaded byte-code.
"\\(?:[^(]\\|([^\"]\\)")))
(defun emacs-lisp-byte-code-comment (end &optional _point)
"Try to syntactically mark the #@NNN ....^_ docstrings in byte-code files."
(let ((ppss (syntax-ppss)))
(when (and (nth 4 ppss)
(eq (char-after (nth 8 ppss)) ?#))
(let* ((n (save-excursion
(goto-char (nth 8 ppss))
(when (looking-at emacs-list-byte-code-comment-re)
(string-to-number (match-string 2)))))
;; `maxdiff' tries to make sure the loop below terminates.
(maxdiff n))
(when n
(let* ((bchar (match-end 2))
(b (position-bytes bchar)))
(goto-char (+ b n))
(while (let ((diff (- (position-bytes (point)) b n)))
(unless (zerop diff)
(when (> diff maxdiff) (setq diff maxdiff))
(forward-char (- diff))
(setq maxdiff (if (> diff 0) diff
(max (1- maxdiff) 1)))
t))))
(if (<= (point) end)
(put-text-property (1- (point)) (point)
'syntax-table
(string-to-syntax "> b"))
(goto-char end)))))))
(defun emacs-lisp-byte-code-syntax-propertize (start end)
(emacs-lisp-byte-code-comment end (point))
(funcall
(syntax-propertize-rules
(emacs-list-byte-code-comment-re
(1 (prog1 "< b" (emacs-lisp-byte-code-comment end (point))))))
start end))
(add-to-list 'auto-mode-alist '("\\.elc\\'" . emacs-lisp-byte-code-mode))
(define-derived-mode emacs-lisp-byte-code-mode emacs-lisp-mode
"Elisp-Byte-Code"
"Major mode for *.elc files."
;; TODO: Add way to disassemble byte-code under point.
(setq-local open-paren-in-column-0-is-defun-start nil)
(setq-local syntax-propertize-function
#'emacs-lisp-byte-code-syntax-propertize))
;;; Generic Lisp mode.
(defvar lisp-mode-map
(let ((map (make-sparse-keymap))
(menu-map (make-sparse-keymap "Lisp")))
@ -730,10 +785,12 @@ POS specifies the starting position where EXP was found and defaults to point."
(let ((vars ()))
(goto-char (point-min))
(while (re-search-forward
"^(def\\(?:var\\|const\\|custom\\)[ \t\n]+\\([^; '()\n\t]+\\)"
"(def\\(?:var\\|const\\|custom\\)[ \t\n]+\\([^; '()\n\t]+\\)"
pos t)
(let ((var (intern (match-string 1))))
(unless (special-variable-p var)
(and (not (special-variable-p var))
(save-excursion
(zerop (car (syntax-ppss (match-beginning 0)))))
(push var vars))))
`(progn ,@(mapcar (lambda (v) `(defvar ,v)) vars) ,exp)))))
@ -820,7 +877,6 @@ if it already has a value.\)
With argument, insert value in current buffer after the defun.
Return the result of evaluation."
(interactive "P")
;; FIXME: the print-length/level bindings should only be applied while
;; printing, not while evaluating.
(let ((debug-on-error eval-expression-debug-on-error)
@ -925,6 +981,7 @@ rigidly along with this one."
(if (or (null indent) (looking-at "\\s<\\s<\\s<"))
;; Don't alter indentation of a ;;; comment line
;; or a line that starts in a string.
;; FIXME: inconsistency: comment-indent moves ;;; to column 0.
(goto-char (- (point-max) pos))
(if (and (looking-at "\\s<") (not (looking-at "\\s<\\s<")))
;; Single-semicolon comment lines should be indented
@ -939,18 +996,7 @@ rigidly along with this one."
;; If initial point was within line's indentation,
;; position after the indentation. Else stay at same point in text.
(if (> (- (point-max) pos) (point))
(goto-char (- (point-max) pos)))
;; If desired, shift remaining lines of expression the same amount.
(and whole-exp (not (zerop shift-amt))
(save-excursion
(goto-char beg)
(forward-sexp 1)
(setq end (point))
(goto-char beg)
(forward-line 1)
(setq beg (point))
(> end beg))
(indent-code-rigidly beg end shift-amt)))))
(goto-char (- (point-max) pos))))))
(defvar calculate-lisp-indent-last-sexp)
@ -1230,7 +1276,6 @@ Lisp function does not specify a special indentation."
(put 'prog2 'lisp-indent-function 2)
(put 'save-excursion 'lisp-indent-function 0)
(put 'save-restriction 'lisp-indent-function 0)
(put 'save-match-data 'lisp-indent-function 0)
(put 'save-current-buffer 'lisp-indent-function 0)
(put 'let 'lisp-indent-function 1)
(put 'let* 'lisp-indent-function 1)

View file

@ -100,6 +100,17 @@ each clause."
(error (message "Compiler-macro error for %S: %S" (car form) err)
form)))
(defun macroexp--eval-if-compile (&rest _forms)
"Pseudo function used internally by macroexp to delay warnings.
The purpose is to delay warnings to bytecomp.el, so they can use things
like `byte-compile-log-warning' to get better file-and-line-number data
and also to avoid outputting the warning during normal execution."
nil)
(put 'macroexp--eval-if-compile 'byte-compile
(lambda (form)
(mapc (lambda (x) (funcall (eval x))) (cdr form))
(byte-compile-constant nil)))
(defun macroexp--expand-all (form)
"Expand all macros in FORM.
This is an internal version of `macroexpand-all'.
@ -112,14 +123,17 @@ Assumes the caller has bound `macroexpand-all-environment'."
(macroexpand (macroexp--all-forms form 1)
macroexpand-all-environment)
;; Normal form; get its expansion, and then expand arguments.
(let ((new-form (macroexpand form macroexpand-all-environment)))
(when (and (not (eq form new-form)) ;It was a macro call.
(car-safe form)
(symbolp (car form))
(get (car form) 'byte-obsolete-info)
(fboundp 'byte-compile-warn-obsolete))
(byte-compile-warn-obsolete (car form)))
(setq form new-form))
(let ((new-form
(macroexpand form macroexpand-all-environment)))
(setq form
(if (and (not (eq form new-form)) ;It was a macro call.
(car-safe form)
(symbolp (car form))
(get (car form) 'byte-obsolete-info))
`(progn (macroexp--eval-if-compile
(lambda () (byte-compile-warn-obsolete ',(car form))))
,new-form)
new-form)))
(pcase form
(`(cond . ,clauses)
(macroexp--cons 'cond (macroexp--all-clauses clauses) form))
@ -323,6 +337,86 @@ symbol itself."
"Return non-nil if EXP can be copied without extra cost."
(or (symbolp exp) (macroexp-const-p exp)))
;;; Load-time macro-expansion.
;; Because macro-expansion used to be more lazy, eager macro-expansion
;; tends to bump into previously harmless/unnoticeable cyclic-dependencies.
;; So, we have to delay macro-expansion like we used to when we detect
;; such a cycle, and we also want to help coders resolve those cycles (since
;; they can be non-obvious) by providing a usefully trimmed backtrace
;; (hopefully) highlighting the problem.
(defun macroexp--backtrace ()
"Return the Elisp backtrace, more recent frames first."
(let ((bt ())
(i 0))
(while
(let ((frame (backtrace-frame i)))
(when frame
(push frame bt)
(setq i (1+ i)))))
(nreverse bt)))
(defun macroexp--trim-backtrace-frame (frame)
(pcase frame
(`(,_ macroexpand (,head . ,_) . ,_) `(macroexpand (,head )))
(`(,_ internal-macroexpand-for-load (,head ,second . ,_) . ,_)
(if (or (symbolp second)
(and (eq 'quote (car-safe second))
(symbolp (cadr second))))
`(macroexpand-all (,head ,second ))
'(macroexpand-all )))
(`(,_ load-with-code-conversion ,name . ,_)
`(load ,(file-name-nondirectory name)))))
(defvar macroexp--pending-eager-loads nil
"Stack of files currently undergoing eager macro-expansion.")
(defun internal-macroexpand-for-load (form)
;; Called from the eager-macroexpansion in readevalloop.
(cond
;; Don't repeat the same warning for every top-level element.
((eq 'skip (car macroexp--pending-eager-loads)) form)
;; If we detect a cycle, skip macro-expansion for now, and output a warning
;; with a trimmed backtrace.
((and load-file-name (member load-file-name macroexp--pending-eager-loads))
(let* ((bt (delq nil
(mapcar #'macroexp--trim-backtrace-frame
(macroexp--backtrace))))
(elem `(load ,(file-name-nondirectory load-file-name)))
(tail (member elem (cdr (member elem bt)))))
(if tail (setcdr tail (list ')))
(if (eq (car-safe (car bt)) 'macroexpand-all) (setq bt (cdr bt)))
(message "Warning: Eager macro-expansion skipped due to cycle:\n %s"
(mapconcat #'prin1-to-string (nreverse bt) " => "))
(push 'skip macroexp--pending-eager-loads)
form))
(t
(condition-case err
(let ((macroexp--pending-eager-loads
(cons load-file-name macroexp--pending-eager-loads)))
(macroexpand-all form))
(error
;; Hopefully this shouldn't happen thanks to the cycle detection,
;; but in case it does happen, let's catch the error and give the
;; code a chance to macro-expand later.
(message "Eager macro-expansion failure: %S" err)
form)))))
;; ¡¡¡ Big Ugly Hack !!!
;; src/bootstrap-emacs is mostly used to compile .el files, so it needs
;; macroexp, bytecomp, cconv, and byte-opt to be fast. Generally this is done
;; by compiling those files first, but this only makes a difference if those
;; files are not preloaded. But macroexp.el is preloaded so we reload it if
;; the current version is interpreted and there's a compiled version available.
(eval-when-compile
(add-hook 'emacs-startup-hook
(lambda ()
(and (not (byte-code-function-p
(symbol-function 'macroexpand-all)))
(locate-library "macroexp.elc")
(load "macroexp.elc")))))
(provide 'macroexp)
;;; macroexp.el ends here

View file

@ -123,16 +123,6 @@ Returns the number of actions taken."
map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map query-replace-map)
(define-key map [?\C-\M-v] 'scroll-other-window)
(define-key map [M-next] 'scroll-other-window)
(define-key map [?\C-\M-\S-v] 'scroll-other-window-down)
(define-key map [M-prior] 'scroll-other-window-down)
;; The above are rather inconvenient, so maybe we should
;; provide the non-other keys for the other-scroll as well.
;; (define-key map [?\C-v] 'scroll-other-window)
;; (define-key map [next] 'scroll-other-window)
;; (define-key map [?\M-v] 'scroll-other-window-down)
;; (define-key map [prior] 'scroll-other-window-down)
(dolist (elt action-alist)
(define-key map (vector (car elt)) (vector (nth 1 elt))))
map)))

View file

@ -60,6 +60,8 @@
;; is in a loop, the repeated macro-expansion becomes terribly costly, so we
;; memoize previous macro expansions to try and avoid recomputing them
;; over and over again.
;; FIXME: Now that macroexpansion is also performed when loading an interpreted
;; file, this is not a real problem any more.
(defconst pcase--memoize (make-hash-table :weakness 'key :test 'eq))
;; (defconst pcase--memoize-1 (make-hash-table :test 'eq))
;; (defconst pcase--memoize-2 (make-hash-table :weakness 'key :test 'equal))