/* Header file for the buffer manipulation primitives.
-Copyright (C) 1985-1986, 1993-1995, 1997-2011
+Copyright (C) 1985-1986, 1993-1995, 1997-2012
Free Software Foundation, Inc.
This file is part of GNU Emacs.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
-#include <time.h> /* for time_t */
+#include <sys/types.h> /* for off_t, time_t */
/* Accessing the parameters of the current buffer. */
#define BUF_TEMP_SET_PT(buffer, position) \
(temp_set_point ((buffer), (position)))
-extern void set_point (EMACS_INT);
-extern void temp_set_point (struct buffer *, EMACS_INT);
-extern void set_point_both (EMACS_INT, EMACS_INT);
+extern void set_point (ptrdiff_t);
+extern void temp_set_point (struct buffer *, ptrdiff_t);
+extern void set_point_both (ptrdiff_t, ptrdiff_t);
extern void temp_set_point_both (struct buffer *,
- EMACS_INT, EMACS_INT);
-extern void enlarge_buffer_text (struct buffer *, EMACS_INT);
+ ptrdiff_t, ptrdiff_t);
+extern void enlarge_buffer_text (struct buffer *, ptrdiff_t);
\f
/* Macros for setting the BEGV, ZV or PT of a given buffer.
- (ptr - (current_buffer)->text->beg <= GPT_BYTE - BEG_BYTE ? 0 : GAP_SIZE) \
+ BEG_BYTE)
-/* Return character at byte position POS. */
+/* Return character at byte position POS. See the caveat WARNING for
+ FETCH_MULTIBYTE_CHAR below. */
#define FETCH_CHAR(pos) \
(!NILP (BVAR (current_buffer, enable_multibyte_characters)) \
/* Return character code of multi-byte form at byte position POS. If POS
doesn't point the head of valid multi-byte form, only the byte at
- POS is returned. No range checking. */
+ POS is returned. No range checking.
+
+ WARNING: The character returned by this macro could be "unified"
+ inside STRING_CHAR, if the original character in the buffer belongs
+ to one of the Private Use Areas (PUAs) of codepoints that Emacs
+ uses to support non-unified CJK characters. If that happens,
+ CHAR_BYTES will return a value that is different from the length of
+ the original multibyte sequence stored in the buffer. Therefore,
+ do _not_ use FETCH_MULTIBYTE_CHAR if you need to advance through
+ the buffer to the next character after fetching this one. Instead,
+ use either FETCH_CHAR_ADVANCE or STRING_CHAR_AND_LENGTH. */
#define FETCH_MULTIBYTE_CHAR(pos) \
(_fetch_multibyte_char_p = (((pos) >= GPT_BYTE ? GAP_SIZE : 0) \
into a buffer's text to functions that malloc. */
unsigned char *beg;
- EMACS_INT gpt; /* Char pos of gap in buffer. */
- EMACS_INT z; /* Char pos of end of buffer. */
- EMACS_INT gpt_byte; /* Byte pos of gap in buffer. */
- EMACS_INT z_byte; /* Byte pos of end of buffer. */
- EMACS_INT gap_size; /* Size of buffer's gap. */
- int modiff; /* This counts buffer-modification events
+ ptrdiff_t gpt; /* Char pos of gap in buffer. */
+ ptrdiff_t z; /* Char pos of end of buffer. */
+ ptrdiff_t gpt_byte; /* Byte pos of gap in buffer. */
+ ptrdiff_t z_byte; /* Byte pos of end of buffer. */
+ ptrdiff_t gap_size; /* Size of buffer's gap. */
+ EMACS_INT modiff; /* This counts buffer-modification events
for this buffer. It is incremented for
each such event, and never otherwise
changed. */
- int chars_modiff; /* This is modified with character change
+ EMACS_INT chars_modiff; /* This is modified with character change
events for this buffer. It is set to
modiff for each such event, and never
otherwise changed. */
- int save_modiff; /* Previous value of modiff, as of last
+ EMACS_INT save_modiff; /* Previous value of modiff, as of last
time buffer visited or saved a file. */
- int overlay_modiff; /* Counts modifications to overlays. */
+ EMACS_INT overlay_modiff; /* Counts modifications to overlays. */
/* Minimum value of GPT - BEG since last redisplay that finished. */
- EMACS_INT beg_unchanged;
+ ptrdiff_t beg_unchanged;
/* Minimum value of Z - GPT since last redisplay that finished. */
- EMACS_INT end_unchanged;
+ ptrdiff_t end_unchanged;
/* MODIFF as of last redisplay that finished; if it matches MODIFF,
beg_unchanged and end_unchanged contain no useful information. */
- int unchanged_modified;
+ EMACS_INT unchanged_modified;
/* BUF_OVERLAY_MODIFF of current buffer, as of last redisplay that
finished; if it matches BUF_OVERLAY_MODIFF, beg_unchanged and
end_unchanged contain no useful information. */
- int overlay_unchanged_modified;
+ EMACS_INT overlay_unchanged_modified;
/* Properties of this buffer's text. */
INTERVAL intervals;
struct buffer_text *text;
/* Char position of point in buffer. */
- EMACS_INT pt;
+ ptrdiff_t pt;
/* Byte position of point in buffer. */
- EMACS_INT pt_byte;
+ ptrdiff_t pt_byte;
/* Char position of beginning of accessible range. */
- EMACS_INT begv;
+ ptrdiff_t begv;
/* Byte position of beginning of accessible range. */
- EMACS_INT begv_byte;
+ ptrdiff_t begv_byte;
/* Char position of end of accessible range. */
- EMACS_INT zv;
+ ptrdiff_t zv;
/* Byte position of end of accessible range. */
- EMACS_INT zv_byte;
+ ptrdiff_t zv_byte;
/* In an indirect buffer, this points to the base buffer.
In an ordinary buffer, it is 0. */
is still the same (since it's rounded up to seconds) but we're actually
not up-to-date. -1 means the size is unknown. Only meaningful if
modtime is actually set. */
- EMACS_INT modtime_size;
+ off_t modtime_size;
/* The value of text->modiff at the last auto-save. */
- int auto_save_modified;
+ EMACS_INT auto_save_modified;
/* The value of text->modiff at the last display error.
Redisplay of this buffer is inhibited until it changes again. */
- int display_error_modiff;
+ EMACS_INT display_error_modiff;
/* The time at which we detected a failure to auto-save,
- Or -1 if we didn't have a failure. */
- int auto_save_failure_time;
+ Or 0 if we didn't have a failure. */
+ time_t auto_save_failure_time;
/* Position in buffer at which display started
the last time this buffer was displayed. */
- EMACS_INT last_window_start;
+ ptrdiff_t last_window_start;
/* Set nonzero whenever the narrowing is changed in this buffer. */
int clip_changed;
struct Lisp_Overlay *overlays_after;
/* Position where the overlay lists are centered. */
- EMACS_INT overlay_center;
+ ptrdiff_t overlay_center;
/* Everything from here down must be a Lisp_Object. */
/* buffer-local Lisp variables start at `undo_list',
tho only the ones from `name' on are GC'd normally. */
+ #define FIRST_FIELD_PER_BUFFER undo_list
/* Changes in the buffer are recorded here for undo.
t means don't record anything.
t means to use hollow box cursor.
See `cursor-type' for other values. */
Lisp_Object BUFFER_INTERNAL_FIELD (cursor_in_non_selected_windows);
+
+ /* This must be the last field in the above list. */
+ #define LAST_FIELD_PER_BUFFER cursor_in_non_selected_windows
};
\f
\f
extern void delete_all_overlays (struct buffer *);
extern void reset_buffer (struct buffer *);
-extern void evaporate_overlays (EMACS_INT);
+extern void evaporate_overlays (ptrdiff_t);
extern ptrdiff_t overlays_at (EMACS_INT pos, int extend, Lisp_Object **vec_ptr,
- ptrdiff_t *len_ptr, EMACS_INT *next_ptr,
- EMACS_INT *prev_ptr, int change_req);
+ ptrdiff_t *len_ptr, ptrdiff_t *next_ptr,
+ ptrdiff_t *prev_ptr, int change_req);
extern ptrdiff_t sort_overlays (Lisp_Object *, ptrdiff_t, struct window *);
-extern void recenter_overlay_lists (struct buffer *, EMACS_INT);
-extern EMACS_INT overlay_strings (EMACS_INT, struct window *, unsigned char **);
+extern void recenter_overlay_lists (struct buffer *, ptrdiff_t);
+extern ptrdiff_t overlay_strings (ptrdiff_t, struct window *, unsigned char **);
extern void validate_region (Lisp_Object *, Lisp_Object *);
extern void set_buffer_internal (struct buffer *);
extern void set_buffer_internal_1 (struct buffer *);
extern void set_buffer_temp (struct buffer *);
+extern Lisp_Object buffer_local_value_1 (Lisp_Object, Lisp_Object);
extern void record_buffer (Lisp_Object);
extern void buffer_slot_type_mismatch (Lisp_Object, int) NO_RETURN;
-extern void fix_overlays_before (struct buffer *, EMACS_INT, EMACS_INT);
+extern void fix_overlays_before (struct buffer *, ptrdiff_t, ptrdiff_t);
extern void mmap_set_vars (int);
/* Get overlays at POSN into array OVERLAYS with NOVERLAYS elements.
variable has an index > 0 associated with it, except when it always
has buffer-local values, in which case the index is -1. If this is
0, this is a bug and means that the slot of VAR in
- buffer_local_flags wasn't intiialized. */
+ buffer_local_flags wasn't initialized. */
#define PER_BUFFER_VAR_IDX(VAR) \
PER_BUFFER_IDX (PER_BUFFER_VAR_OFFSET (VAR))
HCoop / bpt / emacs.git / blobdiff