/* 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.
#include <sys/types.h> /* for off_t, time_t */
#include "systime.h" /* for EMACS_TIME */
+INLINE_HEADER_BEGIN
+#ifndef BUFFER_INLINE
+# define BUFFER_INLINE INLINE
+#endif
+
/* Accessing the parameters of the current buffer. */
/* These macros come in pairs, one for the char position
/* FIXME: should we move this into ->text->auto_save_modiff? */
#define BUF_AUTOSAVE_MODIFF(buf) ((buf)->auto_save_modified)
-/* Interval tree of buffer. */
-#define BUF_INTERVALS(buf) ((buf)->text->intervals)
-
/* Marker chain of buffer. */
#define BUF_MARKERS(buf) ((buf)->text->markers)
EMACS_INT overlay_modiff; /* Counts modifications to overlays. */
+ EMACS_INT compact; /* Set to modiff each time when compact_buffer
+ is called for this buffer. */
+
/* Minimum value of GPT - BEG since last redisplay that finished. */
ptrdiff_t beg_unchanged;
/* Usually 0. Temporarily set to 1 in decode_coding_gap to
prevent Fgarbage_collect from shrinking the gap and losing
not-yet-decoded bytes. */
- int inhibit_shrinking;
+ bool inhibit_shrinking;
};
-/* Lisp fields in struct buffer are hidden from most code and accessed
- via the BVAR macro, below. Only select pieces of code, like the GC,
- are allowed to use BUFFER_INTERNAL_FIELD. */
-#define BUFFER_INTERNAL_FIELD(field) field ## _
+/* Most code should use this macro to access Lisp fields in struct buffer. */
-/* Most code should use this macro to access Lisp fields in struct
- buffer. */
-#define BVAR(buf, field) ((buf)->BUFFER_INTERNAL_FIELD (field))
+#define BVAR(buf, field) ((buf)->INTERNAL_FIELD (field))
/* This is the structure that the buffer Lisp object points to. */
struct vectorlike_header header;
/* The name of this buffer. */
- Lisp_Object BUFFER_INTERNAL_FIELD (name);
+ Lisp_Object INTERNAL_FIELD (name);
/* The name of the file visited in this buffer, or nil. */
- Lisp_Object BUFFER_INTERNAL_FIELD (filename);
+ Lisp_Object INTERNAL_FIELD (filename);
/* Directory for expanding relative file names. */
- Lisp_Object BUFFER_INTERNAL_FIELD (directory);
+ Lisp_Object INTERNAL_FIELD (directory);
/* True if this buffer has been backed up (if you write to the visited
file and it hasn't been backed up, then a backup will be made). */
- Lisp_Object BUFFER_INTERNAL_FIELD (backed_up);
+ Lisp_Object INTERNAL_FIELD (backed_up);
/* Length of file when last read or saved.
-1 means auto saving turned off because buffer shrank a lot.
(That value is used with buffer-swap-text.)
This is not in the struct buffer_text
because it's not used in indirect buffers at all. */
- Lisp_Object BUFFER_INTERNAL_FIELD (save_length);
+ Lisp_Object INTERNAL_FIELD (save_length);
/* File name used for auto-saving this buffer.
This is not in the struct buffer_text
because it's not used in indirect buffers at all. */
- Lisp_Object BUFFER_INTERNAL_FIELD (auto_save_file_name);
+ Lisp_Object INTERNAL_FIELD (auto_save_file_name);
/* Non-nil if buffer read-only. */
- Lisp_Object BUFFER_INTERNAL_FIELD (read_only);
+ Lisp_Object INTERNAL_FIELD (read_only);
/* "The mark". This is a marker which may
point into this buffer or may point nowhere. */
- Lisp_Object BUFFER_INTERNAL_FIELD (mark);
+ Lisp_Object INTERNAL_FIELD (mark);
/* Alist of elements (SYMBOL . VALUE-IN-THIS-BUFFER) for all
per-buffer variables of this buffer. For locally unbound
symbols, just the symbol appears as the element. */
- Lisp_Object BUFFER_INTERNAL_FIELD (local_var_alist);
+ Lisp_Object INTERNAL_FIELD (local_var_alist);
/* Symbol naming major mode (e.g., lisp-mode). */
- Lisp_Object BUFFER_INTERNAL_FIELD (major_mode);
+ Lisp_Object INTERNAL_FIELD (major_mode);
/* Pretty name of major mode (e.g., "Lisp"). */
- Lisp_Object BUFFER_INTERNAL_FIELD (mode_name);
+ Lisp_Object INTERNAL_FIELD (mode_name);
/* Mode line element that controls format of mode line. */
- Lisp_Object BUFFER_INTERNAL_FIELD (mode_line_format);
+ Lisp_Object INTERNAL_FIELD (mode_line_format);
/* Analogous to mode_line_format for the line displayed at the top
of windows. Nil means don't display that line. */
- Lisp_Object BUFFER_INTERNAL_FIELD (header_line_format);
+ Lisp_Object INTERNAL_FIELD (header_line_format);
/* Keys that are bound local to this buffer. */
- Lisp_Object BUFFER_INTERNAL_FIELD (keymap);
+ Lisp_Object INTERNAL_FIELD (keymap);
/* This buffer's local abbrev table. */
- Lisp_Object BUFFER_INTERNAL_FIELD (abbrev_table);
+ Lisp_Object INTERNAL_FIELD (abbrev_table);
/* This buffer's syntax table. */
- Lisp_Object BUFFER_INTERNAL_FIELD (syntax_table);
+ Lisp_Object INTERNAL_FIELD (syntax_table);
/* This buffer's category table. */
- Lisp_Object BUFFER_INTERNAL_FIELD (category_table);
+ Lisp_Object INTERNAL_FIELD (category_table);
/* Values of several buffer-local variables. */
/* tab-width is buffer-local so that redisplay can find it
in buffers that are not current. */
- Lisp_Object BUFFER_INTERNAL_FIELD (case_fold_search);
- Lisp_Object BUFFER_INTERNAL_FIELD (tab_width);
- Lisp_Object BUFFER_INTERNAL_FIELD (fill_column);
- Lisp_Object BUFFER_INTERNAL_FIELD (left_margin);
+ Lisp_Object INTERNAL_FIELD (case_fold_search);
+ Lisp_Object INTERNAL_FIELD (tab_width);
+ Lisp_Object INTERNAL_FIELD (fill_column);
+ Lisp_Object INTERNAL_FIELD (left_margin);
/* Function to call when insert space past fill column. */
- Lisp_Object BUFFER_INTERNAL_FIELD (auto_fill_function);
+ Lisp_Object INTERNAL_FIELD (auto_fill_function);
/* Case table for case-conversion in this buffer.
This char-table maps each char into its lower-case version. */
- Lisp_Object BUFFER_INTERNAL_FIELD (downcase_table);
+ Lisp_Object INTERNAL_FIELD (downcase_table);
/* Char-table mapping each char to its upper-case version. */
- Lisp_Object BUFFER_INTERNAL_FIELD (upcase_table);
+ Lisp_Object INTERNAL_FIELD (upcase_table);
/* Char-table for conversion for case-folding search. */
- Lisp_Object BUFFER_INTERNAL_FIELD (case_canon_table);
+ Lisp_Object INTERNAL_FIELD (case_canon_table);
/* Char-table of equivalences for case-folding search. */
- Lisp_Object BUFFER_INTERNAL_FIELD (case_eqv_table);
+ Lisp_Object INTERNAL_FIELD (case_eqv_table);
/* Non-nil means do not display continuation lines. */
- Lisp_Object BUFFER_INTERNAL_FIELD (truncate_lines);
+ Lisp_Object INTERNAL_FIELD (truncate_lines);
/* Non-nil means to use word wrapping when displaying continuation lines. */
- Lisp_Object BUFFER_INTERNAL_FIELD (word_wrap);
+ Lisp_Object INTERNAL_FIELD (word_wrap);
/* Non-nil means display ctl chars with uparrow. */
- Lisp_Object BUFFER_INTERNAL_FIELD (ctl_arrow);
+ Lisp_Object INTERNAL_FIELD (ctl_arrow);
/* Non-nil means reorder bidirectional text for display in the
visual order. */
- Lisp_Object BUFFER_INTERNAL_FIELD (bidi_display_reordering);
+ Lisp_Object INTERNAL_FIELD (bidi_display_reordering);
/* If non-nil, specifies which direction of text to force in all the
paragraphs of the buffer. Nil means determine paragraph
direction dynamically for each paragraph. */
- Lisp_Object BUFFER_INTERNAL_FIELD (bidi_paragraph_direction);
+ Lisp_Object INTERNAL_FIELD (bidi_paragraph_direction);
/* Non-nil means do selective display;
see doc string in syms_of_buffer (buffer.c) for details. */
- Lisp_Object BUFFER_INTERNAL_FIELD (selective_display);
+ Lisp_Object INTERNAL_FIELD (selective_display);
/* Non-nil means show ... at end of line followed by invisible lines. */
- Lisp_Object BUFFER_INTERNAL_FIELD (selective_display_ellipses);
+ Lisp_Object INTERNAL_FIELD (selective_display_ellipses);
/* Alist of (FUNCTION . STRING) for each minor mode enabled in buffer. */
- Lisp_Object BUFFER_INTERNAL_FIELD (minor_modes);
+ Lisp_Object INTERNAL_FIELD (minor_modes);
/* t if "self-insertion" should overwrite; `binary' if it should also
overwrite newlines and tabs - for editing executables and the like. */
- Lisp_Object BUFFER_INTERNAL_FIELD (overwrite_mode);
+ Lisp_Object INTERNAL_FIELD (overwrite_mode);
/* Non-nil means abbrev mode is on. Expand abbrevs automatically. */
- Lisp_Object BUFFER_INTERNAL_FIELD (abbrev_mode);
+ Lisp_Object INTERNAL_FIELD (abbrev_mode);
/* Display table to use for text in this buffer. */
- Lisp_Object BUFFER_INTERNAL_FIELD (display_table);
+ Lisp_Object INTERNAL_FIELD (display_table);
/* t means the mark and region are currently active. */
- Lisp_Object BUFFER_INTERNAL_FIELD (mark_active);
+ Lisp_Object INTERNAL_FIELD (mark_active);
/* Non-nil means the buffer contents are regarded as multi-byte
form of characters, not a binary code. */
- Lisp_Object BUFFER_INTERNAL_FIELD (enable_multibyte_characters);
+ Lisp_Object INTERNAL_FIELD (enable_multibyte_characters);
/* Coding system to be used for encoding the buffer contents on
saving. */
- Lisp_Object BUFFER_INTERNAL_FIELD (buffer_file_coding_system);
+ Lisp_Object INTERNAL_FIELD (buffer_file_coding_system);
/* List of symbols naming the file format used for visited file. */
- Lisp_Object BUFFER_INTERNAL_FIELD (file_format);
+ Lisp_Object INTERNAL_FIELD (file_format);
/* List of symbols naming the file format used for auto-save file. */
- Lisp_Object BUFFER_INTERNAL_FIELD (auto_save_file_format);
+ 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 BUFFER_INTERNAL_FIELD (cache_long_line_scans);
+ Lisp_Object INTERNAL_FIELD (cache_long_line_scans);
/* If the width run cache is enabled, this table contains the
character widths width_run_cache (see above) assumes. When we
current display table to see whether the display table has
affected the widths of any characters. If it has, we
invalidate the width run cache, and re-initialize width_table. */
- Lisp_Object BUFFER_INTERNAL_FIELD (width_table);
+ Lisp_Object INTERNAL_FIELD (width_table);
/* In an indirect buffer, or a buffer that is the base of an
indirect buffer, this holds a marker that records
PT for this buffer when the buffer is not current. */
- Lisp_Object BUFFER_INTERNAL_FIELD (pt_marker);
+ Lisp_Object INTERNAL_FIELD (pt_marker);
/* In an indirect buffer, or a buffer that is the base of an
indirect buffer, this holds a marker that records
BEGV for this buffer when the buffer is not current. */
- Lisp_Object BUFFER_INTERNAL_FIELD (begv_marker);
+ Lisp_Object INTERNAL_FIELD (begv_marker);
/* In an indirect buffer, or a buffer that is the base of an
indirect buffer, this holds a marker that records
ZV for this buffer when the buffer is not current. */
- Lisp_Object BUFFER_INTERNAL_FIELD (zv_marker);
+ Lisp_Object INTERNAL_FIELD (zv_marker);
/* This holds the point value before the last scroll operation.
Explicitly setting point sets this to nil. */
- Lisp_Object BUFFER_INTERNAL_FIELD (point_before_scroll);
+ Lisp_Object INTERNAL_FIELD (point_before_scroll);
/* Truename of the visited file, or nil. */
- Lisp_Object BUFFER_INTERNAL_FIELD (file_truename);
+ Lisp_Object INTERNAL_FIELD (file_truename);
/* Invisibility spec of this buffer.
t => any non-nil `invisible' property means invisible.
A list => `invisible' property means invisible
if it is memq in that list. */
- Lisp_Object BUFFER_INTERNAL_FIELD (invisibility_spec);
+ Lisp_Object INTERNAL_FIELD (invisibility_spec);
/* This is the last window that was selected with this buffer in it,
or nil if that window no longer displays this buffer. */
- Lisp_Object BUFFER_INTERNAL_FIELD (last_selected_window);
+ Lisp_Object INTERNAL_FIELD (last_selected_window);
/* Incremented each time the buffer is displayed in a window. */
- Lisp_Object BUFFER_INTERNAL_FIELD (display_count);
+ Lisp_Object INTERNAL_FIELD (display_count);
/* Widths of left and right marginal areas for windows displaying
this buffer. */
- Lisp_Object BUFFER_INTERNAL_FIELD (left_margin_cols);
- Lisp_Object BUFFER_INTERNAL_FIELD (right_margin_cols);
+ Lisp_Object INTERNAL_FIELD (left_margin_cols);
+ Lisp_Object INTERNAL_FIELD (right_margin_cols);
/* Widths of left and right fringe areas for windows displaying
this buffer. */
- Lisp_Object BUFFER_INTERNAL_FIELD (left_fringe_width);
- Lisp_Object BUFFER_INTERNAL_FIELD (right_fringe_width);
+ Lisp_Object INTERNAL_FIELD (left_fringe_width);
+ Lisp_Object INTERNAL_FIELD (right_fringe_width);
/* Non-nil means fringes are drawn outside display margins;
othersize draw them between margin areas and text. */
- Lisp_Object BUFFER_INTERNAL_FIELD (fringes_outside_margins);
+ Lisp_Object INTERNAL_FIELD (fringes_outside_margins);
/* Width and type of scroll bar areas for windows displaying
this buffer. */
- Lisp_Object BUFFER_INTERNAL_FIELD (scroll_bar_width);
- Lisp_Object BUFFER_INTERNAL_FIELD (vertical_scroll_bar_type);
+ Lisp_Object INTERNAL_FIELD (scroll_bar_width);
+ Lisp_Object INTERNAL_FIELD (vertical_scroll_bar_type);
/* Non-nil means indicate lines not displaying text (in a style
like vi). */
- Lisp_Object BUFFER_INTERNAL_FIELD (indicate_empty_lines);
+ Lisp_Object INTERNAL_FIELD (indicate_empty_lines);
/* Non-nil means indicate buffer boundaries and scrolling. */
- Lisp_Object BUFFER_INTERNAL_FIELD (indicate_buffer_boundaries);
+ Lisp_Object INTERNAL_FIELD (indicate_buffer_boundaries);
/* Logical to physical fringe bitmap mappings. */
- Lisp_Object BUFFER_INTERNAL_FIELD (fringe_indicator_alist);
+ Lisp_Object INTERNAL_FIELD (fringe_indicator_alist);
/* Logical to physical cursor bitmap mappings. */
- Lisp_Object BUFFER_INTERNAL_FIELD (fringe_cursor_alist);
+ Lisp_Object INTERNAL_FIELD (fringe_cursor_alist);
/* Time stamp updated each time this buffer is displayed in a window. */
- Lisp_Object BUFFER_INTERNAL_FIELD (display_time);
+ Lisp_Object INTERNAL_FIELD (display_time);
/* If scrolling the display because point is below the bottom of a
window showing this buffer, try to choose a window start so
that point ends up this number of lines from the top of the
window. Nil means that scrolling method isn't used. */
- Lisp_Object BUFFER_INTERNAL_FIELD (scroll_up_aggressively);
+ Lisp_Object INTERNAL_FIELD (scroll_up_aggressively);
/* If scrolling the display because point is above the top of a
window showing this buffer, try to choose a window start so
that point ends up this number of lines from the bottom of the
window. Nil means that scrolling method isn't used. */
- Lisp_Object BUFFER_INTERNAL_FIELD (scroll_down_aggressively);
+ Lisp_Object INTERNAL_FIELD (scroll_down_aggressively);
/* Desired cursor type in this buffer. See the doc string of
per-buffer variable `cursor-type'. */
- Lisp_Object BUFFER_INTERNAL_FIELD (cursor_type);
+ Lisp_Object INTERNAL_FIELD (cursor_type);
/* An integer > 0 means put that number of pixels below text lines
in the display of this buffer. */
- Lisp_Object BUFFER_INTERNAL_FIELD (extra_line_spacing);
+ Lisp_Object INTERNAL_FIELD (extra_line_spacing);
/* Cursor type to display in non-selected windows.
t means to use hollow box cursor.
See `cursor-type' for other values. */
- Lisp_Object BUFFER_INTERNAL_FIELD (cursor_in_non_selected_windows);
+ Lisp_Object INTERNAL_FIELD (cursor_in_non_selected_windows);
/* No more Lisp_Object beyond this point. Except undo_list,
which is handled specially in Fgarbage_collect . */
In an ordinary buffer, it is 0. */
struct buffer *base_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;
+
/* 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
buffer of an indirect buffer. But we can't store it in the
struct buffer_text because local variables have to be right in
the struct buffer. So we copy it around in set_buffer_internal. */
- Lisp_Object BUFFER_INTERNAL_FIELD (undo_list);
+ Lisp_Object INTERNAL_FIELD (undo_list);
};
-\f
+/* Most code should use these functions to set Lisp fields in struct
+ buffer. */
+BUFFER_INLINE void
+bset_bidi_paragraph_direction (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (bidi_paragraph_direction) = val;
+}
+BUFFER_INLINE void
+bset_case_canon_table (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (case_canon_table) = val;
+}
+BUFFER_INLINE void
+bset_case_eqv_table (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (case_eqv_table) = val;
+}
+BUFFER_INLINE void
+bset_directory (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (directory) = val;
+}
+BUFFER_INLINE void
+bset_display_count (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (display_count) = val;
+}
+BUFFER_INLINE void
+bset_display_time (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (display_time) = val;
+}
+BUFFER_INLINE void
+bset_downcase_table (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (downcase_table) = val;
+}
+BUFFER_INLINE void
+bset_enable_multibyte_characters (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (enable_multibyte_characters) = val;
+}
+BUFFER_INLINE void
+bset_filename (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (filename) = val;
+}
+BUFFER_INLINE void
+bset_keymap (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (keymap) = val;
+}
+BUFFER_INLINE void
+bset_last_selected_window (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (last_selected_window) = val;
+}
+BUFFER_INLINE void
+bset_local_var_alist (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (local_var_alist) = val;
+}
+BUFFER_INLINE void
+bset_mark_active (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (mark_active) = val;
+}
+BUFFER_INLINE void
+bset_point_before_scroll (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (point_before_scroll) = val;
+}
+BUFFER_INLINE void
+bset_read_only (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (read_only) = val;
+}
+BUFFER_INLINE void
+bset_truncate_lines (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (truncate_lines) = val;
+}
+BUFFER_INLINE void
+bset_undo_list (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (undo_list) = val;
+}
+BUFFER_INLINE void
+bset_upcase_table (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (upcase_table) = val;
+}
+BUFFER_INLINE void
+bset_width_table (struct buffer *b, Lisp_Object val)
+{
+ b->INTERNAL_FIELD (width_table) = val;
+}
+
+/* Convenient check whether buffer B is live. */
+
+#define BUFFER_LIVE_P(b) (!NILP (BVAR (b, name)))
+
+/* Verify indirection counters. */
+
+#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); \
+ } \
+ } while (0)
+
+/* Chain of all buffers, including killed ones. */
+
+extern struct buffer *all_buffers;
+
+/* Used to iterate over the chain above. */
+
+#define FOR_EACH_BUFFER(b) \
+ for ((b) = all_buffers; (b); (b) = (b)->header.next.buffer)
+
/* This points to the current buffer. */
extern struct buffer *current_buffer;
\f
extern void delete_all_overlays (struct buffer *);
extern void reset_buffer (struct buffer *);
+extern void compact_buffer (struct buffer *);
extern void evaporate_overlays (ptrdiff_t);
-extern ptrdiff_t overlays_at (EMACS_INT pos, int extend, Lisp_Object **vec_ptr,
- ptrdiff_t *len_ptr, ptrdiff_t *next_ptr,
- ptrdiff_t *prev_ptr, int change_req);
+extern ptrdiff_t overlays_at (EMACS_INT, bool, Lisp_Object **,
+ ptrdiff_t *, ptrdiff_t *, ptrdiff_t *, bool);
extern ptrdiff_t sort_overlays (Lisp_Object *, ptrdiff_t, struct window *);
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 _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 (int);
+extern void mmap_set_vars (bool);
+
+/* Set the current buffer to B.
+
+ We previously set windows_or_buffers_changed here to invalidate
+ global unchanged information in beg_unchanged and end_unchanged.
+ This is no longer necessary because we now compute unchanged
+ information on a buffer-basis. Every action affecting other
+ windows than the selected one requires a select_window at some
+ time, and that increments windows_or_buffers_changed. */
+
+BUFFER_INLINE void
+set_buffer_internal (struct buffer *b)
+{
+ if (current_buffer != b)
+ set_buffer_internal_1 (b);
+}
+
+/* Arrange to go back to the original buffer after the next
+ call to unbind_to if the original buffer is still alive. */
+
+BUFFER_INLINE void
+record_unwind_current_buffer (void)
+{
+ record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ());
+}
/* Get overlays at POSN into array OVERLAYS with NOVERLAYS elements.
If NEXTP is non-NULL, return next overlay there.
extern Lisp_Object Qbefore_change_functions;
extern Lisp_Object Qafter_change_functions;
extern Lisp_Object Qfirst_change_hook;
-\f
+
+/* Get text properties of B. */
+
+BUFFER_INLINE INTERVAL
+buffer_intervals (struct buffer *b)
+{
+ eassert (b->text != NULL);
+ return b->text->intervals;
+}
+
+/* Set text properties of B to I. */
+
+BUFFER_INLINE void
+set_buffer_intervals (struct buffer *b, INTERVAL i)
+{
+ eassert (b->text != NULL);
+ b->text->intervals = i;
+}
+
+/* Non-zero if current buffer has overlays. */
+
+BUFFER_INLINE bool
+buffer_has_overlays (void)
+{
+ return current_buffer->overlays_before || current_buffer->overlays_after;
+}
+
/* 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.
the buffer to the next character after fetching this one. Instead,
use either FETCH_CHAR_ADVANCE or STRING_CHAR_AND_LENGTH. */
-static inline int
+BUFFER_INLINE int
FETCH_MULTIBYTE_CHAR (ptrdiff_t pos)
{
unsigned char *p = ((pos >= GPT_BYTE ? GAP_SIZE : 0)
If POS doesn't point the head of valid multi-byte form, only the byte at
POS is returned. No range checking. */
-static inline int
+BUFFER_INLINE int
BUF_FETCH_MULTIBYTE_CHAR (struct buffer *buf, ptrdiff_t pos)
{
unsigned char *p
\f
/* Overlays */
-/* 1 if the OV is an overlay object. */
-
-#define OVERLAY_VALID(OV) (OVERLAYP (OV))
-
/* Return the marker that stands for where OV starts in the buffer. */
-#define OVERLAY_START(OV) (XOVERLAY (OV)->start)
+#define OVERLAY_START(OV) XOVERLAY (OV)->start
/* Return the marker that stands for where OV ends in the buffer. */
-#define OVERLAY_END(OV) (XOVERLAY (OV)->end)
+#define OVERLAY_END(OV) XOVERLAY (OV)->end
/* Return the plist of overlay OV. */
-#define OVERLAY_PLIST(OV) XOVERLAY ((OV))->plist
+#define OVERLAY_PLIST(OV) XOVERLAY (OV)->plist
/* Return the actual buffer position for the marker P.
We assume you know which buffer it's pointing into. */
#define OVERLAY_POSITION(P) \
- (MARKERP (P) ? marker_position (P) : (abort (), 0))
+ (MARKERP (P) ? marker_position (P) : (emacs_abort (), 0))
\f
/***********************************************************************
from the start of a buffer structure. */
#define PER_BUFFER_VAR_OFFSET(VAR) \
- offsetof (struct buffer, BUFFER_INTERNAL_FIELD (VAR))
+ offsetof (struct buffer, INTERNAL_FIELD (VAR))
/* Used to iterate over normal Lisp_Object fields of struct buffer (all
Lisp_Objects except undo_list). If you add, remove, or reorder
Lisp_Objects in a struct buffer, make sure that this is still correct. */
-#define for_each_per_buffer_object_at(offset) \
+#define FOR_EACH_PER_BUFFER_OBJECT_AT(offset) \
for (offset = PER_BUFFER_VAR_OFFSET (name); \
offset <= PER_BUFFER_VAR_OFFSET (cursor_in_non_selected_windows); \
- offset += sizeof (Lisp_Object))
+ offset += word_size)
/* Return the index of buffer-local variable VAR. Each per-buffer
variable has an index > 0 associated with it, except when it always
#define PER_BUFFER_VALUE_P(B, IDX) \
(((IDX) < 0 || IDX >= last_per_buffer_idx) \
- ? (abort (), 0) \
+ ? (emacs_abort (), 0) \
: ((B)->local_flags[IDX] != 0))
/* Set whether per-buffer variable with index IDX has a buffer-local
#define SET_PER_BUFFER_VALUE_P(B, IDX, VAL) \
do { \
if ((IDX) < 0 || (IDX) >= last_per_buffer_idx) \
- abort (); \
+ emacs_abort (); \
(B)->local_flags[IDX] = (VAL); \
} while (0)
#define PER_BUFFER_IDX(OFFSET) \
XINT (*(Lisp_Object *)((OFFSET) + (char *) &buffer_local_flags))
-/* Return the default value of the per-buffer variable at offset
- OFFSET in the buffer structure. */
+/* Functions to get and set default value of the per-buffer
+ variable at offset OFFSET in the buffer structure. */
-#define PER_BUFFER_DEFAULT(OFFSET) \
- (*(Lisp_Object *)((OFFSET) + (char *) &buffer_defaults))
+BUFFER_INLINE Lisp_Object
+per_buffer_default (int offset)
+{
+ return *(Lisp_Object *)(offset + (char *) &buffer_defaults);
+}
-/* Return the buffer-local value of the per-buffer variable at offset
- OFFSET in the buffer structure. */
+BUFFER_INLINE void
+set_per_buffer_default (int offset, Lisp_Object value)
+{
+ *(Lisp_Object *)(offset + (char *) &buffer_defaults) = value;
+}
+
+/* Functions to get and set buffer-local value of the per-buffer
+ variable at offset OFFSET in the buffer structure. */
+
+BUFFER_INLINE Lisp_Object
+per_buffer_value (struct buffer *b, int offset)
+{
+ return *(Lisp_Object *)(offset + (char *) b);
+}
+
+BUFFER_INLINE void
+set_per_buffer_value (struct buffer *b, int offset, Lisp_Object value)
+{
+ *(Lisp_Object *)(offset + (char *) b) = value;
+}
-#define PER_BUFFER_VALUE(BUFFER, OFFSET) \
- (*(Lisp_Object *)((OFFSET) + (char *) (BUFFER)))
-\f
/* Downcase a character C, or make no change if that cannot be done. */
-static inline int
+BUFFER_INLINE int
downcase (int c)
{
Lisp_Object downcase_table = BVAR (current_buffer, downcase_table);
}
/* 1 if C is upper case. */
-static inline int uppercasep (int c) { return downcase (c) != c; }
+BUFFER_INLINE bool uppercasep (int c) { return downcase (c) != c; }
/* Upcase a character C known to be not upper case. */
-static inline int
+BUFFER_INLINE int
upcase1 (int c)
{
Lisp_Object upcase_table = BVAR (current_buffer, upcase_table);
}
/* 1 if C is lower case. */
-static inline int lowercasep (int c)
-{ return !uppercasep (c) && upcase1 (c) != c; }
+BUFFER_INLINE bool
+lowercasep (int c)
+{
+ return !uppercasep (c) && upcase1 (c) != c;
+}
/* Upcase a character C, or make no change if that cannot be done. */
-static inline int upcase (int c) { return uppercasep (c) ? c : upcase1 (c); }
+BUFFER_INLINE int upcase (int c) { return uppercasep (c) ? c : upcase1 (c); }
+
+INLINE_HEADER_END