/* Indentation functions.
- Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1998, 2000, 2001,
- 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ Copyright (C) 1985-1988, 1993-1995, 1998, 2000-2011
Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include "dispextern.h"
#include "region-cache.h"
-/* Indentation can insert tabs if this is non-zero;
- otherwise always uses spaces. */
-
-static int indent_tabs_mode;
-
#define CR 015
/* These three values memorize the current column to avoid recalculation. */
static int last_known_column_modified;
-static double current_column_1 P_ ((void));
-static double position_indentation P_ ((int));
+static double current_column_1 (void);
+static double position_indentation (int);
/* Cache of beginning of line found by the last call of
current_column. */
/* Get the display table to use for the current buffer. */
struct Lisp_Char_Table *
-buffer_display_table ()
+buffer_display_table (void)
{
Lisp_Object thisbuf;
- thisbuf = current_buffer->display_table;
+ thisbuf = BVAR (current_buffer, display_table);
if (DISP_TABLE_P (thisbuf))
return XCHAR_TABLE (thisbuf);
if (DISP_TABLE_P (Vstandard_display_table))
/* Return the width of character C under display table DP. */
static int
-character_width (c, dp)
- int c;
- struct Lisp_Char_Table *dp;
+character_width (int c, struct Lisp_Char_Table *dp)
{
Lisp_Object elt;
invalidate the buffer's width_run_cache. */
int
-disptab_matches_widthtab (disptab, widthtab)
- struct Lisp_Char_Table *disptab;
- struct Lisp_Vector *widthtab;
+disptab_matches_widthtab (struct Lisp_Char_Table *disptab, struct Lisp_Vector *widthtab)
{
int i;
/* Recompute BUF's width table, using the display table DISPTAB. */
void
-recompute_width_table (buf, disptab)
- struct buffer *buf;
- struct Lisp_Char_Table *disptab;
+recompute_width_table (struct buffer *buf, struct Lisp_Char_Table *disptab)
{
int i;
struct Lisp_Vector *widthtab;
- if (!VECTORP (buf->width_table))
- buf->width_table = Fmake_vector (make_number (256), make_number (0));
- widthtab = XVECTOR (buf->width_table);
+ if (!VECTORP (BVAR (buf, width_table)))
+ BVAR (buf, width_table) = Fmake_vector (make_number (256), make_number (0));
+ widthtab = XVECTOR (BVAR (buf, width_table));
if (widthtab->size != 256)
abort ();
state of current_buffer's cache_long_line_scans variable. */
static void
-width_run_cache_on_off ()
+width_run_cache_on_off (void)
{
- if (NILP (current_buffer->cache_long_line_scans)
+ if (NILP (BVAR (current_buffer, cache_long_line_scans))
/* And, for the moment, this feature doesn't work on multibyte
characters. */
- || !NILP (current_buffer->enable_multibyte_characters))
+ || !NILP (BVAR (current_buffer, enable_multibyte_characters)))
{
/* It should be off. */
if (current_buffer->width_run_cache)
{
free_region_cache (current_buffer->width_run_cache);
current_buffer->width_run_cache = 0;
- current_buffer->width_table = Qnil;
+ BVAR (current_buffer, width_table) = Qnil;
}
}
else
will equal the return value. */
EMACS_INT
-skip_invisible (pos, next_boundary_p, to, window)
- EMACS_INT pos;
- EMACS_INT *next_boundary_p;
- EMACS_INT to;
- Lisp_Object window;
+skip_invisible (EMACS_INT pos, EMACS_INT *next_boundary_p, EMACS_INT to, Lisp_Object window)
{
Lisp_Object prop, position, overlay_limit, proplimit;
Lisp_Object buffer, tmp;
however, ^M is treated as end of line when `selective-display' is t.
Text that has an invisible property is considered as having width 0, unless
`buffer-invisibility-spec' specifies that it is replaced by an ellipsis. */)
- ()
+ (void)
{
Lisp_Object temp;
XSETFASTINT (temp, (int) current_column ()); /* iftc */
/* Cancel any recorded value of the horizontal position. */
void
-invalidate_current_column ()
+invalidate_current_column (void)
{
last_known_column_point = 0;
}
double
-current_column ()
+current_column (void)
{
register int col;
register unsigned char *ptr, *stop;
register int tab_seen;
int post_tab;
register int c;
- register int tab_width = XINT (current_buffer->tab_width);
- int ctl_arrow = !NILP (current_buffer->ctl_arrow);
+ register int tab_width = XINT (BVAR (current_buffer, tab_width));
+ int ctl_arrow = !NILP (BVAR (current_buffer, ctl_arrow));
register struct Lisp_Char_Table *dp = buffer_display_table ();
if (PT == last_known_column_point
col++;
else if (c == '\n'
|| (c == '\r'
- && EQ (current_buffer->selective_display, Qt)))
+ && EQ (BVAR (current_buffer, selective_display), Qt)))
{
ptr++;
goto start_of_line_found;
return col;
}
\f
-extern Lisp_Object Qspace, QCwidth, QCalign_to;
/* Check the presence of a display property and compute its width.
If a property was found and its width was found as well, return
static void
scan_for_column (EMACS_INT *endpos, EMACS_INT *goalcol, EMACS_INT *prevcol)
{
- register EMACS_INT tab_width = XINT (current_buffer->tab_width);
- register int ctl_arrow = !NILP (current_buffer->ctl_arrow);
+ register EMACS_INT tab_width = XINT (BVAR (current_buffer, tab_width));
+ register int ctl_arrow = !NILP (BVAR (current_buffer, ctl_arrow));
register struct Lisp_Char_Table *dp = buffer_display_table ();
- int multibyte = !NILP (current_buffer->enable_multibyte_characters);
+ int multibyte = !NILP (BVAR (current_buffer, enable_multibyte_characters));
struct composition_it cmp_it;
Lisp_Object window;
struct window *w;
w = ! NILP (window) ? XWINDOW (window) : NULL;
if (tab_width <= 0 || tab_width > 1000) tab_width = 8;
- bzero (&cmp_it, sizeof cmp_it);
+ memset (&cmp_it, 0, sizeof cmp_it);
cmp_it.id = -1;
composition_compute_stop_pos (&cmp_it, scan, scan_byte, end, Qnil);
if (c == '\n')
goto endloop;
- if (c == '\r' && EQ (current_buffer->selective_display, Qt))
+ if (c == '\r' && EQ (BVAR (current_buffer, selective_display), Qt))
goto endloop;
if (c == '\t')
{
if (c == '\n')
goto endloop;
- if (c == '\r' && EQ (current_buffer->selective_display, Qt))
+ if (c == '\r' && EQ (BVAR (current_buffer, selective_display), Qt))
goto endloop;
if (c == '\t')
{
due to text properties or overlays. */
static double
-current_column_1 ()
+current_column_1 (void)
{
EMACS_INT col = MOST_POSITIVE_FIXNUM;
EMACS_INT opoint = PT;
even if that goes past COLUMN; by default, MINIMUM is zero.
The return value is COLUMN. */)
- (column, minimum)
- Lisp_Object column, minimum;
+ (Lisp_Object column, Lisp_Object minimum)
{
int mincol;
register int fromcol;
- register int tab_width = XINT (current_buffer->tab_width);
+ register int tab_width = XINT (BVAR (current_buffer, tab_width));
CHECK_NUMBER (column);
if (NILP (minimum))
}
\f
-static double position_indentation P_ ((int));
+static double position_indentation (int);
DEFUN ("current-indentation", Fcurrent_indentation, Scurrent_indentation,
0, 0, 0,
doc: /* Return the indentation of the current line.
This is the horizontal position of the character
following any initial whitespace. */)
- ()
+ (void)
{
Lisp_Object val;
- int opoint = PT, opoint_byte = PT_BYTE;
+ EMACS_INT opoint = PT, opoint_byte = PT_BYTE;
scan_newline (PT, PT_BYTE, BEGV, BEGV_BYTE, -1, 1);
}
static double
-position_indentation (pos_byte)
- register int pos_byte;
+position_indentation (register int pos_byte)
{
register EMACS_INT column = 0;
- register EMACS_INT tab_width = XINT (current_buffer->tab_width);
+ register EMACS_INT tab_width = XINT (BVAR (current_buffer, tab_width));
register unsigned char *p;
register unsigned char *stop;
unsigned char *start;
switch (*p++)
{
case 0240:
- if (! NILP (current_buffer->enable_multibyte_characters))
+ if (! NILP (BVAR (current_buffer, enable_multibyte_characters)))
return column;
case ' ':
column++;
break;
default:
if (ASCII_BYTE_P (p[-1])
- || NILP (current_buffer->enable_multibyte_characters))
+ || NILP (BVAR (current_buffer, enable_multibyte_characters)))
return column;
{
int c;
preceding line. */
int
-indented_beyond_p (pos, pos_byte, column)
- int pos, pos_byte;
- double column;
+indented_beyond_p (EMACS_INT pos, EMACS_INT pos_byte, double column)
{
double val;
- int opoint = PT, opoint_byte = PT_BYTE;
+ EMACS_INT opoint = PT, opoint_byte = PT_BYTE;
SET_PT_BOTH (pos, pos_byte);
while (PT > BEGV && FETCH_BYTE (PT_BYTE) == '\n')
COLUMN, add spaces/tabs to get there.
The return value is the current column. */)
- (column, force)
- Lisp_Object column, force;
+ (Lisp_Object column, Lisp_Object force)
{
EMACS_INT pos;
EMACS_INT col, prev_col;
the scroll bars if they are turned on. */
struct position *
-compute_motion (from, fromvpos, fromhpos, did_motion, to, tovpos, tohpos, width, hscroll, tab_offset, win)
- EMACS_INT from, fromvpos, fromhpos, to, tovpos, tohpos;
- int did_motion;
- EMACS_INT width;
- EMACS_INT hscroll, tab_offset;
- struct window *win;
+compute_motion (EMACS_INT from, EMACS_INT fromvpos, EMACS_INT fromhpos, int did_motion, EMACS_INT to, EMACS_INT tovpos, EMACS_INT tohpos, EMACS_INT width, EMACS_INT hscroll, EMACS_INT tab_offset, struct window *win)
{
register EMACS_INT hpos = fromhpos;
register EMACS_INT vpos = fromvpos;
register EMACS_INT pos;
EMACS_INT pos_byte;
register int c = 0;
- register EMACS_INT tab_width = XFASTINT (current_buffer->tab_width);
- register int ctl_arrow = !NILP (current_buffer->ctl_arrow);
+ register EMACS_INT tab_width = XFASTINT (BVAR (current_buffer, tab_width));
+ register int ctl_arrow = !NILP (BVAR (current_buffer, ctl_arrow));
register struct Lisp_Char_Table *dp = window_display_table (win);
int selective
- = (INTEGERP (current_buffer->selective_display)
- ? XINT (current_buffer->selective_display)
- : !NILP (current_buffer->selective_display) ? -1 : 0);
+ = (INTEGERP (BVAR (current_buffer, selective_display))
+ ? XINT (BVAR (current_buffer, selective_display))
+ : !NILP (BVAR (current_buffer, selective_display)) ? -1 : 0);
int selective_rlen
= (selective && dp && VECTORP (DISP_INVIS_VECTOR (dp))
? XVECTOR (DISP_INVIS_VECTOR (dp))->size : 0);
EMACS_INT next_width_run = from;
Lisp_Object window;
- int multibyte = !NILP (current_buffer->enable_multibyte_characters);
+ int multibyte = !NILP (BVAR (current_buffer, enable_multibyte_characters));
/* If previous char scanned was a wide character,
this is the column where it ended. Otherwise, this is 0. */
EMACS_INT wide_column_end_hpos = 0;
width_run_cache_on_off ();
if (dp == buffer_display_table ())
- width_table = (VECTORP (current_buffer->width_table)
- ? XVECTOR (current_buffer->width_table)->contents
+ width_table = (VECTORP (BVAR (current_buffer, width_table))
+ ? XVECTOR (BVAR (current_buffer, width_table))->contents
: 0);
else
/* If the window has its own display table, we can't use the width
pos_byte = prev_pos_byte = CHAR_TO_BYTE (from);
contin_hpos = 0;
prev_tab_offset = tab_offset;
- bzero (&cmp_it, sizeof cmp_it);
+ memset (&cmp_it, 0, sizeof cmp_it);
cmp_it.id = -1;
composition_compute_stop_pos (&cmp_it, pos, pos_byte, to, Qnil);
to be changed here. */
{
unsigned char *ovstr;
- int ovlen = overlay_strings (pos, win, &ovstr);
+ EMACS_INT ovlen = overlay_strings (pos, win, &ovstr);
hpos += ((multibyte && ovlen > 0)
- ? strwidth (ovstr, ovlen) : ovlen);
+ ? strwidth ((char *) ovstr, ovlen) : ovlen);
}
did_motion = 0;
}
if (hscroll || truncate
- || !NILP (current_buffer->truncate_lines))
+ || !NILP (BVAR (current_buffer, truncate_lines)))
{
/* Truncating: skip to newline, unless we are already past
TO (we need to go back below). */
the text character-by-character. */
if (current_buffer->width_run_cache && pos >= next_width_run)
{
- int run_end;
+ EMACS_INT run_end;
int common_width
= region_cache_forward (current_buffer,
current_buffer->width_run_cache,
want to skip over it for some other reason. */
if (common_width != 0)
{
- int run_end_hpos;
+ EMACS_INT run_end_hpos;
/* Don't go past the final buffer posn the user
requested. */
and the window's upper-left coordinates as FROMPOS.
Pass the buffer's (point-max) as TO, to limit the scan to the end of the
visible section of the buffer, and pass LINE and COL as TOPOS. */)
- (from, frompos, to, topos, width, offsets, window)
- Lisp_Object from, frompos, to, topos;
- Lisp_Object width, offsets, window;
+ (Lisp_Object from, Lisp_Object frompos, Lisp_Object to, Lisp_Object topos, Lisp_Object width, Lisp_Object offsets, Lisp_Object window)
{
struct window *w;
Lisp_Object bufpos, hpos, vpos, prevhpos;
struct position val_vmotion;
struct position *
-vmotion (from, vtarget, w)
- register EMACS_INT from, vtarget;
- struct window *w;
+vmotion (register EMACS_INT from, register EMACS_INT vtarget, struct window *w)
{
EMACS_INT hscroll = XINT (w->hscroll);
struct position pos;
EMACS_INT from_byte;
EMACS_INT lmargin = hscroll > 0 ? 1 - hscroll : 0;
int selective
- = (INTEGERP (current_buffer->selective_display)
- ? XINT (current_buffer->selective_display)
- : !NILP (current_buffer->selective_display) ? -1 : 0);
+ = (INTEGERP (BVAR (current_buffer, selective_display))
+ ? XINT (BVAR (current_buffer, selective_display))
+ : !NILP (BVAR (current_buffer, selective_display)) ? -1 : 0);
Lisp_Object window;
EMACS_INT start_hpos = 0;
int did_motion;
This is consistent with other cursor motion functions
and makes it possible to use `vertical-motion' in any buffer,
whether or not it is currently displayed in some window. */)
- (lines, window)
- Lisp_Object lines, window;
+ (Lisp_Object lines, Lisp_Object window)
{
struct it it;
struct text_pos pt;
it_overshoot_expected = 1;
else if (it.method == GET_FROM_STRING)
{
- const char *s = SDATA (it.string);
+ const char *s = SSDATA (it.string);
const char *e = s + SBYTES (it.string);
while (s < e && *s != '\n')
++s;
/* File's initialization. */
void
-syms_of_indent ()
+syms_of_indent (void)
{
- DEFVAR_BOOL ("indent-tabs-mode", &indent_tabs_mode,
+ DEFVAR_BOOL ("indent-tabs-mode", indent_tabs_mode,
doc: /* *Indentation can insert tabs if this is non-nil. */);
indent_tabs_mode = 1;
defsubr (&Svertical_motion);
defsubr (&Scompute_motion);
}
-
-/* arch-tag: 9adfea44-71f7-4988-8ee3-96da15c502cc
- (do not change this comment) */
HCoop / bpt / emacs.git / blobdiff