+2012-03-16 Alan Mackenzie <acm@muc.de>
+
+ Further optimise the handling of large macros.
+
+ * progmodes/cc-engine.el (c-crosses-statement-barrier-p): Use a
+ limit to a call of `c-literal-limits'.
+ (c-determine-+ve-limit): New function.
+ (c-at-macro-vsemi-p): Move `c-in-literal' to the bottom of an
+ `and'.
+ (c-guess-basic-syntax): In macros, restrict a search limit to
+ 2000.
+ In CASE 5B, restrict a search limit to 500.
+ (c-just-after-func-arglist-p): Obviouly wrong `or' -> `and'.
+
+ * progmodes/cc-mode.el (c-neutralize-syntax-in-and-mark-CPP):
+ Restrict macro bounds to +-500 from after-change's BEG END.
+
2012-03-16 Leo Liu <sdl.web@gmail.com>
* font-lock.el (lisp-font-lock-keywords-2): Add letrec.
(c-at-vsemi-p))))
(throw 'done vsemi-pos))
;; In a string/comment?
- ((setq lit-range (c-literal-limits))
+ ((setq lit-range (c-literal-limits from))
(goto-char (cdr lit-range)))
((eq (char-after) ?:)
(forward-char)
(if scan-forward-p
(progn (narrow-to-region (point-min) here)
(c-append-to-state-cache good-pos))
-
- (c-get-cache-scan-pos good-pos))))
+ good-pos)))
(t ; (eq strategy 'IN-LIT)
(setq c-state-cache nil
(point-min))
(t
(c-determine-limit (- how-far-back count) base try-size))))))
+
+(defun c-determine-+ve-limit (how-far &optional start-pos)
+ ;; Return a buffer position about HOW-FAR non-literal characters forward
+ ;; from START-POS (default point), which must not be inside a literal.
+ (save-excursion
+ (let ((pos (or start-pos (point)))
+ (count how-far)
+ (s (parse-partial-sexp (point) (point)))) ; null state
+ (while (and (not (eobp))
+ (> count 0))
+ ;; Scan over counted characters.
+ (setq s (parse-partial-sexp
+ pos
+ (min (+ pos count) (point-max))
+ nil ; target-depth
+ nil ; stop-before
+ s ; state
+ 'syntax-table)) ; stop-comment
+ (setq count (- count (- (point) pos) 1)
+ pos (point))
+ ;; Scan over literal characters.
+ (if (nth 8 s)
+ (setq s (parse-partial-sexp
+ pos
+ (point-max)
+ nil ; target-depth
+ nil ; stop-before
+ s ; state
+ 'syntax-table) ; stop-comment
+ pos (point))))
+ (point))))
+
\f
;; `c-find-decl-spots' and accompanying stuff.
(and
(eq (c-beginning-of-statement-1 lim) 'same)
- (not (or (c-major-mode-is 'objc-mode)
- (c-forward-objc-directive)))
+ (not (and (c-major-mode-is 'objc-mode)
+ (c-forward-objc-directive)))
(setq id-start
(car-safe (c-forward-decl-or-cast-1 (c-point 'bosws) nil nil)))
(setq pos (point)))
(and
c-macro-with-semi-re
- (not (c-in-literal))
(eq (skip-chars-backward " \t") 0)
;; Check we've got nothing after this except comments and empty lines
(c-backward-syntactic-ws)
t))
(c-simple-skip-symbol-backward)
- (looking-at c-macro-with-semi-re)))))
+ (looking-at c-macro-with-semi-re)
+ (goto-char pos)
+ (not (c-in-literal)))))) ; The most expensive check last.
(defun c-macro-vsemi-status-unknown-p () t) ; See cc-defs.el.
containing-sexp nil)))
(setq lim (1+ containing-sexp))))
(setq lim (point-min)))
+ (when (c-beginning-of-macro)
+ (goto-char indent-point)
+ (let ((lim1 (c-determine-limit 2000)))
+ (setq lim (max lim lim1))))
;; If we're in a parenthesis list then ',' delimits the
;; "statements" rather than being an operator (with the
;; CASE 5B: After a function header but before the body (or
;; the ending semicolon if there's no body).
((save-excursion
- (when (setq placeholder (c-just-after-func-arglist-p lim))
+ (when (setq placeholder (c-just-after-func-arglist-p
+ (max lim (c-determine-limit 500))))
(setq tmp-pos (point))))
(cond
;; top level construct. Or, perhaps, an unrecognized construct.
(t
(while (and (setq placeholder (point))
- (eq (car (c-beginning-of-decl-1 containing-sexp))
+ (eq (car (c-beginning-of-decl-1 containing-sexp)) ; Can't use `lim' here.
'same)
(save-excursion
(c-backward-syntactic-ws)
(eq (cdar c-state-cache) (point)))
;; Speed up the backward search a bit.
(goto-char (caar c-state-cache)))
- (c-beginning-of-decl-1 containing-sexp)
+ (c-beginning-of-decl-1 containing-sexp) ; Can't use `lim' here.
(setq placeholder (point))
(if (= start (point))
;; The '}' is unbalanced.