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Always use boyer_moore in ASCII or Latin-1 buffers with ASCII search strings. 2007-12-26 Aidan Kehoe <kehoea@parhasard.net> * casetab.c: Extend and correct some case table documentation. * search.c (search_buffer): Correct a bug where only the first entry for a character in the case equivalence table was examined in determining if the Boyer-Moore search algorithm is appropriate. If there are case mappings outside of the charset and row of the characters specified in the search string, those case mappings can be safely ignored (and Boyer-Moore search can be used) if we know from the buffer statistics that the corresponding characters cannot occur. * search.c (boyer_moore): Assert that we haven't been passed a string with varying characters sets or rows within character sets. That's what simple_search is for. In the very rare event that a character in the search string has a canonical case mapping that is not in the same character set and row, don't try to search for the canonical character, search for some other character that is in the the desired character set and row. Assert that the case table isn't corrupt. Do not search for any character case mappings that cannot possibly occur in the buffer, given the buffer metadata about its contents.
author Aidan Kehoe <kehoea@parhasard.net>
date Wed, 26 Dec 2007 17:30:16 +0100
parents 6728e641994e
children d372b17f63ce
line wrap: on
line source

/* Define general gutter support.
   Copyright (C) 1999 Andy Piper.

This file is part of XEmacs.

XEmacs is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.

XEmacs is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: Not in FSF. */

#ifndef INCLUDED_gutter_h_
#define INCLUDED_gutter_h_

#include "specifier.h"

#define DEVICE_SUPPORTS_GUTTERS_P(d) HAS_DEVMETH_P (d, output_frame_gutters)

DECLARE_SPECIFIER_TYPE (gutter);
#define XGUTTER_SPECIFIER(x) XSPECIFIER_TYPE (x, gutter)
#define GUTTER_SPECIFIERP(x) SPECIFIER_TYPEP (x, gutter)
#define CHECK_GUTTER_SPECIFIER(x) CHECK_SPECIFIER_TYPE (x, gutter)
#define CONCHECK_GUTTER_SPECIFIER(x) CONCHECK_SPECIFIER_TYPE (x, gutter)

#define DEFAULT_GUTTER_WIDTH		40
#define DEFAULT_GUTTER_BORDER_WIDTH	2

enum gutter_pos
{
  TOP_GUTTER     = 0,
  BOTTOM_GUTTER  = 1,
  LEFT_GUTTER    = 2,
  RIGHT_GUTTER   = 3
};

/* Iterate over all possible gutter positions */
#define GUTTER_POS_LOOP(var) \
  for (var = (enum gutter_pos) 0; var < 4; var = (enum gutter_pos) (var + 1))

extern Lisp_Object Qgutter;

extern Lisp_Object Vgutter_size[4];
extern Lisp_Object Vgutter_border_width[4];
void update_frame_gutters (struct frame *f);
void update_frame_gutter_geometry (struct frame *f);
void mark_gutters (struct frame* f);
void init_frame_gutters (struct frame *f);
void init_device_gutters (struct device *d);
void init_global_gutters (struct device *d);
void free_frame_gutters (struct frame *f);
void redraw_exposed_gutters (struct frame *f, int x, int y, int width,
			     int height);
void reset_gutter_display_lines (struct frame* f);
void gutter_extent_signal_changed_region_maybe (Lisp_Object obj,
						Charbpos start, Charbpos end);
int display_boxes_in_gutter_p (struct frame *f, struct display_box* db,
			       struct display_glyph_area* dga);

#define WINDOW_GUTTER_BORDER_WIDTH(w, pos) \
  (INTP ((w)->gutter_border_width[pos]) ? XINT ((w)->gutter_border_width[pos]) : 0)
#define WINDOW_GUTTER_SIZE(w, pos) \
  (INTP ((w)->gutter_size[pos]) ? XINT ((w)->gutter_size[pos]) : 0)
#define WINDOW_GUTTER_SIZE_INTERNAL(w, pos) \
  (INTP ((w)->real_gutter_size[pos]) ? XINT ((w)->real_gutter_size[pos]) : 0)
#define WINDOW_GUTTER_VISIBLE(w, pos) \
  ((w)->gutter_visible_p[pos])
#define WINDOW_GUTTER(w, pos) \
  ((w)->real_gutter[pos])
#define RAW_WINDOW_GUTTER(w, pos) \
  ((w)->gutter[pos])

#define WINDOW_REAL_GUTTER_SIZE(w, pos)	\
  (!NILP (WINDOW_GUTTER_VISIBLE (w, pos))		\
   ? WINDOW_GUTTER_SIZE_INTERNAL (w, pos)	\
   : 0)
#define WINDOW_REAL_GUTTER_VISIBLE(f, pos)	\
   (WINDOW_REAL_GUTTER_SIZE (f, pos) > 0)
#define WINDOW_REAL_GUTTER_BORDER_WIDTH(f, pos)	\
  ((!NILP (WINDOW_GUTTER_VISIBLE (f, pos))		\
   && WINDOW_GUTTER_SIZE_INTERNAL (f,pos) > 0)	\
   ? WINDOW_GUTTER_BORDER_WIDTH (f, pos)	\
   : 0)
#define WINDOW_REAL_GUTTER_BOUNDS(f, pos)	\
   (WINDOW_REAL_GUTTER_SIZE (f,pos) + 		\
    2 * WINDOW_REAL_GUTTER_BORDER_WIDTH (f,pos))

/* these macros predicate size on position and type of window */
#define WINDOW_REAL_TOP_GUTTER_BOUNDS(w)	\
   WINDOW_REAL_GUTTER_BOUNDS (w,TOP_GUTTER)
#define WINDOW_REAL_BOTTOM_GUTTER_BOUNDS(w)	\
   WINDOW_REAL_GUTTER_BOUNDS (w,BOTTOM_GUTTER)
#define WINDOW_REAL_LEFT_GUTTER_BOUNDS(w)	\
   WINDOW_REAL_GUTTER_BOUNDS (w,LEFT_GUTTER)
#define WINDOW_REAL_RIGHT_GUTTER_BOUNDS(w)	\
   WINDOW_REAL_GUTTER_BOUNDS (w,RIGHT_GUTTER)

#define FRAME_GUTTER_VISIBLE(f, pos) \
   WINDOW_REAL_GUTTER_VISIBLE (XWINDOW (FRAME_LAST_NONMINIBUF_WINDOW (f)), pos)
#define FRAME_GUTTER_SIZE(f, pos) \
   WINDOW_REAL_GUTTER_SIZE (XWINDOW (FRAME_LAST_NONMINIBUF_WINDOW (f)), pos)
#define FRAME_GUTTER_BOUNDS(f, pos) \
   WINDOW_REAL_GUTTER_BOUNDS (XWINDOW (FRAME_LAST_NONMINIBUF_WINDOW (f)), pos)
#define FRAME_GUTTER_BORDER_WIDTH(f, pos) \
   WINDOW_REAL_GUTTER_BORDER_WIDTH (XWINDOW (FRAME_LAST_NONMINIBUF_WINDOW (f)), pos)

#define FRAME_GUTTER(f, pos) \
WINDOW_GUTTER (XWINDOW (FRAME_LAST_NONMINIBUF_WINDOW (f)), pos)

/* these macros predicate size on position and type of window */
#define FRAME_TOP_GUTTER_BOUNDS(f) \
   WINDOW_REAL_GUTTER_BOUNDS (XWINDOW (FRAME_LAST_NONMINIBUF_WINDOW (f)), TOP_GUTTER)
#define FRAME_BOTTOM_GUTTER_BOUNDS(f) \
   WINDOW_REAL_GUTTER_BOUNDS (XWINDOW (FRAME_LAST_NONMINIBUF_WINDOW (f)), BOTTOM_GUTTER)
#define FRAME_LEFT_GUTTER_BOUNDS(f) \
   WINDOW_REAL_GUTTER_BOUNDS (XWINDOW (FRAME_LAST_NONMINIBUF_WINDOW (f)), LEFT_GUTTER)
#define FRAME_RIGHT_GUTTER_BOUNDS(f) \
   WINDOW_REAL_GUTTER_BOUNDS (XWINDOW (FRAME_LAST_NONMINIBUF_WINDOW (f)), RIGHT_GUTTER)

#endif /* INCLUDED_gutter_h_ */