[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Slow fontification in C mode buffers
From: |
Alan Mackenzie |
Subject: |
Re: Slow fontification in C mode buffers |
Date: |
Fri, 6 Jan 2012 22:08:06 +0000 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Hello, Kentaro.
On Fri, Dec 23, 2011 at 10:56:15AM +0900, Kentaro NAKAZAWA wrote:
> Hello. (sorry for my poor english ;)
> Other pattern attached.
> The file is very heavy at edit and undo.
> Geoff Gole <address@hidden> writes:
> > If another data point will help, I've also noticed *very* slow c-mode
> > fontification in a script generated header,
> > /usr/include/GL/gl_mangle.h. In case you don't have this header, a
> > copy is attached.
> > The file is basically several thousand #defines.
> // -*- mode: c++ -*-
> namespace NameSpace1 {
> namespace NameSpace2 {
> enum {
> kFooBarBazType_Attribute0000 = 0x0000, // Comment0000
> kFooBarBazType_Attribute0001 = 0x0001, // Comment0001
> kFooBarBazType_Attribute0002 = 0x0002, // Comment0002
> kFooBarBazType_Attribute0003 = 0x0003, // Comment0003
>
> [....]
>
> kFooBarBazType_Attribute0220 = 0x00dc, // Comment0220
> kFooBarBazType_Attribute0221 = 0x00dd, // Comment0221
> kFooBarBazType_Attribute0222 = 0x00de, // Comment0222
> };
> } // namespace Namespace2
> } // namespace Namespace1
Would you try this patch and let me know how it goes, please.
*** orig/cc-fonts.el 2012-01-06 12:27:14.000000000 +0000
--- cc-fonts.el 2012-01-06 21:48:54.000000000 +0000
***************
*** 1394,1399 ****
--- 1394,1414 ----
(c-fontify-recorded-types-and-refs)
nil)
+ ((and (not c-enums-contain-decls)
+ ;; An optimisation quickly to eliminate scans of long enum
+ ;; declarations in the next cond arm.
+ (let ((paren-state (c-parse-state)))
+ (and
+ (numberp (car paren-state))
+ (save-excursion
+ (goto-char (car paren-state))
+ (c-backward-token-2)
+ (or (looking-at c-brace-list-key))
+ (progn
+ (c-backward-token-2)
+ (looking-at c-brace-list-key))))))
+ t)
+
(t
;; Are we at a declarator? Try to go back to the declaration
;; to check this. If we get there, check whether a "typedef"
*** orig/cc-langs.el 2012-01-06 12:27:14.000000000 +0000
--- cc-langs.el 2012-01-06 12:54:00.000000000 +0000
***************
*** 2930,2935 ****
--- 2930,2941 ----
; generics is not yet coded in CC Mode.
(c-lang-defvar c-recognize-<>-arglists (c-lang-const c-recognize-<>-arglists))
+ (c-lang-defconst c-enums-contain-decls
+ "Non-nil means that an enum structure can contain declarations."
+ t nil
+ java t)
+ (c-lang-defvar c-enums-contain-decls (c-lang-const c-enums-contain-decls))
+
(c-lang-defconst c-recognize-paren-inits
"Non-nil means that parenthesis style initializers exist,
i.e. constructs like
> --
> Kentaro Nakazawa
--
Alan Mackenzie (Nuremberg, Germany).
- Re: Slow fontification in C mode buffers,
Alan Mackenzie <=