/* Header file for the buffer manipulation primitives.
-Copyright (C) 1985-1986, 1993-1995, 1997-2012
- Free Software Foundation, Inc.
+Copyright (C) 1985-1986, 1993-1995, 1997-2013 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 <sys/types.h> /* for off_t, time_t */
-#include "systime.h" /* for EMACS_TIME */
+#include <sys/types.h>
+#include <time.h>
INLINE_HEADER_BEGIN
#ifndef BUFFER_INLINE
/* Size of gap. */
#define GAP_SIZE (current_buffer->text->gap_size)
-/* Is the current buffer narrowed? */
-#define NARROWED ((BEGV != BEG) || (ZV != Z))
-
/* Modification count. */
#define MODIFF (current_buffer->text->modiff)
/* Size of gap. */
#define BUF_GAP_SIZE(buf) ((buf)->text->gap_size)
-/* Is this buffer narrowed? */
-#define BUF_NARROWED(buf) ((BUF_BEGV (buf) != BUF_BEG (buf)) \
- || (BUF_ZV (buf) != BUF_Z (buf)))
-
/* Modification count. */
#define BUF_MODIFF(buf) ((buf)->text->modiff)
/* FIXME: should we move this into ->text->auto_save_modiff? */
#define BUF_AUTOSAVE_MODIFF(buf) ((buf)->auto_save_modified)
+/* Compaction count. */
+#define BUF_COMPACT(buf) ((buf)->text->compact)
+
/* Marker chain of buffer. */
#define BUF_MARKERS(buf) ((buf)->text->markers)
/* Access a Lisp position value in POS,
and store the charpos in CHARPOS and the bytepos in BYTEPOS. */
-#define DECODE_POSITION(charpos, bytepos, pos) \
-do \
- { \
- Lisp_Object __pos = (pos); \
- if (NUMBERP (__pos)) \
- { \
- charpos = __pos; \
- bytepos = buf_charpos_to_bytepos (current_buffer, __pos); \
- } \
- else if (MARKERP (__pos)) \
- { \
- charpos = marker_position (__pos); \
- bytepos = marker_byte_position (__pos); \
- } \
- else \
- wrong_type_argument (Qinteger_or_marker_p, __pos); \
- } \
-while (0)
+#define DECODE_POSITION(charpos, bytepos, pos) \
+ do \
+ { \
+ Lisp_Object __pos = (pos); \
+ if (NUMBERP (__pos)) \
+ { \
+ charpos = __pos; \
+ bytepos = buf_charpos_to_bytepos (current_buffer, __pos); \
+ } \
+ else if (MARKERP (__pos)) \
+ { \
+ charpos = marker_position (__pos); \
+ bytepos = marker_byte_position (__pos); \
+ } \
+ else \
+ wrong_type_argument (Qinteger_or_marker_p, __pos); \
+ } \
+ while (0)
/* Maximum number of bytes in a buffer.
A buffer cannot contain more bytes than a 1-origin fixnum can represent,
#define BUF_BYTES_MAX \
(ptrdiff_t) min (MOST_POSITIVE_FIXNUM - 1, min (SIZE_MAX, PTRDIFF_MAX))
+/* Maximum gap size after compact_buffer, in bytes. Also
+ used in make_gap_larger to get some extra reserved space. */
+
+#define GAP_BYTES_DFL 2000
+
+/* Minimum gap size after compact_buffer, in bytes. Also
+ used in make_gap_smaller to avoid too small gap size. */
+
+#define GAP_BYTES_MIN 20
+
/* Return the address of byte position N in current buffer. */
#define BYTE_POS_ADDR(n) \
/* List of symbols naming the file format used for auto-save file. */
Lisp_Object INTERNAL_FIELD (auto_save_file_format);
- /* True if the newline position cache and width run cache are
- enabled. See search.c and indent.c. */
- Lisp_Object INTERNAL_FIELD (cache_long_line_scans);
+ /* True if the newline position cache, width run cache and BIDI paragraph
+ cache are enabled. See search.c, indent.c and bidi.c for details. */
+ Lisp_Object INTERNAL_FIELD (cache_long_scans);
/* If the width run cache is enabled, this table contains the
character widths width_run_cache (see above) assumes. When we
In an ordinary buffer, it is 0. */
struct buffer *base_buffer;
- /* In an indirect buffer, this is -1. In an ordinary buffer,
+ /* In an indirect buffer, this is -1. In an ordinary buffer,
it's the number of indirect buffers that share our text;
zero means that we're the only owner of this text. */
int indirections;
+ /* Number of windows showing this buffer. Always -1 for
+ an indirect buffer since it counts as its base buffer. */
+ int window_count;
+
/* A non-zero value in slot IDX means that per-buffer variable
with index IDX has a local value in this buffer. The index IDX
for a buffer-local variable is stored in that variable's slot
char local_flags[MAX_PER_BUFFER_VARS];
/* Set to the modtime of the visited file when read or written.
- EMACS_NSECS (modtime) == NONEXISTENT_MODTIME_NSECS means
- visited file was nonexistent. EMACS_NSECS (modtime) ==
+ modtime.tv_nsec == NONEXISTENT_MODTIME_NSECS means
+ visited file was nonexistent. modtime.tv_nsec ==
UNKNOWN_MODTIME_NSECS means visited file modtime unknown;
in no case complain about any mismatch on next save attempt. */
#define NONEXISTENT_MODTIME_NSECS (-1)
#define UNKNOWN_MODTIME_NSECS (-2)
- EMACS_TIME modtime;
+ struct timespec modtime;
/* Size of the file when modtime was set. This is used to detect the
case where the file grew while we were reading it, so the modtime
the character's width; if it maps a character to zero, we don't
know what its width is. This allows compute_motion to process
such regions very quickly, using algebra instead of inspecting
- each character. See also width_table, below. */
+ each character. See also width_table, below.
+
+ The latter cache is used to speedup bidi_find_paragraph_start. */
struct region_cache *newline_cache;
struct region_cache *width_run_cache;
+ struct region_cache *bidi_paragraph_cache;
/* Non-zero means don't use redisplay optimizations for
displaying this buffer. */
#define BUFFER_CHECK_INDIRECTION(b) \
do { \
if (BUFFER_LIVE_P (b)) \
- { \
- if (b->base_buffer) \
- { \
- eassert (b->indirections == -1); \
- eassert (b->base_buffer->indirections > 0); \
- } \
- else \
- eassert (b->indirections >= 0); \
- } \
+ { \
+ if (b->base_buffer) \
+ { \
+ eassert (b->indirections == -1); \
+ eassert (b->base_buffer->indirections > 0); \
+ } \
+ else \
+ eassert (b->indirections >= 0); \
+ } \
} while (0)
/* Chain of all buffers, including killed ones. */
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 _Noreturn void buffer_slot_type_mismatch (Lisp_Object, int);
extern void fix_overlays_before (struct buffer *, ptrdiff_t, ptrdiff_t);
extern void mmap_set_vars (bool);
+extern void restore_buffer (Lisp_Object);
+extern void set_buffer_if_live (Lisp_Object);
/* Set the current buffer to B.
} \
} while (0)
+extern Lisp_Object Vbuffer_alist;
extern Lisp_Object Qbefore_change_functions;
extern Lisp_Object Qafter_change_functions;
extern Lisp_Object Qfirst_change_hook;
+extern Lisp_Object Qpriority, Qbefore_string, Qafter_string;
+
+/* FOR_EACH_LIVE_BUFFER (LIST_VAR, BUF_VAR) followed by a statement is
+ a `for' loop which iterates over the buffers from Vbuffer_alist. */
+
+#define FOR_EACH_LIVE_BUFFER(list_var, buf_var) \
+ FOR_EACH_ALIST_VALUE (Vbuffer_alist, list_var, buf_var)
/* Get text properties of B. */
+ pos + BUF_BEG_ADDR (buf) - BEG_BYTE);
return STRING_CHAR (p);
}
-\f
+
+/* Return number of windows showing B. */
+
+BUFFER_INLINE int
+buffer_window_count (struct buffer *b)
+{
+ if (b->base_buffer)
+ b = b->base_buffer;
+ eassert (b->window_count >= 0);
+ return b->window_count;
+}
+
/* Overlays */
/* Return the marker that stands for where OV starts in the buffer. */
HCoop / bpt / emacs.git / blobdiff