/* Code for doing intervals.
Copyright (C) 1993, 1994, 1995, 1997, 1998, 2001, 2002, 2003, 2004,
- 2005, 2006, 2007 Free Software Foundation, Inc.
+ 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
This file is part of GNU Emacs.
-GNU Emacs is free software; you can redistribute it and/or modify
+GNU Emacs 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 3, or (at your option)
-any later version.
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
/* NOTES:
#include <config.h>
+#include <setjmp.h>
#include "lisp.h"
#include "intervals.h"
#include "buffer.h"
/* Since the left child is longer, there must be one. */
new_diff = i->total_length - i->left->total_length
+ RIGHT_TOTAL_LENGTH (i->left) - LEFT_TOTAL_LENGTH (i->left);
- if (abs (new_diff) >= old_diff)
+ if (eabs (new_diff) >= old_diff)
break;
i = rotate_right (i);
balance_an_interval (i->right);
/* Since the right child is longer, there must be one. */
new_diff = i->total_length - i->right->total_length
+ LEFT_TOTAL_LENGTH (i->right) - RIGHT_TOTAL_LENGTH (i->right);
- if (abs (new_diff) >= -old_diff)
+ if (eabs (new_diff) >= -old_diff)
break;
i = rotate_left (i);
balance_an_interval (i->left);
/* Set point "temporarily", without checking any text properties. */
INLINE void
-temp_set_point (buffer, charpos)
- struct buffer *buffer;
- int charpos;
+temp_set_point (struct buffer *buffer, EMACS_INT charpos)
{
temp_set_point_both (buffer, charpos,
buf_charpos_to_bytepos (buffer, charpos));
byte position BYTEPOS. */
INLINE void
-temp_set_point_both (buffer, charpos, bytepos)
- int charpos, bytepos;
- struct buffer *buffer;
+temp_set_point_both (struct buffer *buffer,
+ EMACS_INT charpos, EMACS_INT bytepos)
{
/* In a single-byte buffer, the two positions must be equal. */
if (BUF_ZV (buffer) == BUF_ZV_BYTE (buffer)
if (charpos > BUF_ZV (buffer) || charpos < BUF_BEGV (buffer))
abort ();
- BUF_PT_BYTE (buffer) = bytepos;
- BUF_PT (buffer) = charpos;
+ SET_BUF_PT_BOTH (buffer, charpos, bytepos);
}
/* Set point in BUFFER to CHARPOS. If the target position is
before an intangible character, move to an ok place. */
void
-set_point (buffer, charpos)
- register struct buffer *buffer;
- register int charpos;
+set_point (EMACS_INT charpos)
{
- set_point_both (buffer, charpos, buf_charpos_to_bytepos (buffer, charpos));
+ set_point_both (charpos, buf_charpos_to_bytepos (current_buffer, charpos));
}
/* If there's an invisible character at position POS + TEST_OFFS in the
before an intangible character, move to an ok place. */
void
-set_point_both (buffer, charpos, bytepos)
- register struct buffer *buffer;
- register int charpos, bytepos;
+set_point_both (EMACS_INT charpos, EMACS_INT bytepos)
{
register INTERVAL to, from, toprev, fromprev;
- int buffer_point;
- int old_position = BUF_PT (buffer);
+ EMACS_INT buffer_point;
+ EMACS_INT old_position = PT;
/* This ensures that we move forward past intangible text when the
initial position is the same as the destination, in the rare
instances where this is important, e.g. in line-move-finish
(simple.el). */
int backwards = (charpos < old_position ? 1 : 0);
int have_overlays;
- int original_position;
+ EMACS_INT original_position;
- buffer->point_before_scroll = Qnil;
+ current_buffer->point_before_scroll = Qnil;
- if (charpos == BUF_PT (buffer))
+ if (charpos == PT)
return;
/* In a single-byte buffer, the two positions must be equal. */
- if (BUF_ZV (buffer) == BUF_ZV_BYTE (buffer)
- && charpos != bytepos)
- abort ();
+ eassert (ZV != ZV_BYTE || charpos == bytepos);
/* Check this now, before checking if the buffer has any intervals.
That way, we can catch conditions which break this sanity check
whether or not there are intervals in the buffer. */
- if (charpos > BUF_ZV (buffer) || charpos < BUF_BEGV (buffer))
- abort ();
+ eassert (charpos <= ZV && charpos >= BEGV);
- have_overlays = (buffer->overlays_before || buffer->overlays_after);
+ have_overlays = (current_buffer->overlays_before
+ || current_buffer->overlays_after);
/* If we have no text properties and overlays,
then we can do it quickly. */
- if (NULL_INTERVAL_P (BUF_INTERVALS (buffer)) && ! have_overlays)
+ if (NULL_INTERVAL_P (BUF_INTERVALS (current_buffer)) && ! have_overlays)
{
- temp_set_point_both (buffer, charpos, bytepos);
+ temp_set_point_both (current_buffer, charpos, bytepos);
return;
}
/* Set TO to the interval containing the char after CHARPOS,
and TOPREV to the interval containing the char before CHARPOS.
Either one may be null. They may be equal. */
- to = find_interval (BUF_INTERVALS (buffer), charpos);
- if (charpos == BUF_BEGV (buffer))
+ to = find_interval (BUF_INTERVALS (current_buffer), charpos);
+ if (charpos == BEGV)
toprev = 0;
else if (to && to->position == charpos)
toprev = previous_interval (to);
else
toprev = to;
- buffer_point = (BUF_PT (buffer) == BUF_ZV (buffer)
- ? BUF_ZV (buffer) - 1
- : BUF_PT (buffer));
+ buffer_point = (PT == ZV ? ZV - 1 : PT);
/* Set FROM to the interval containing the char after PT,
and FROMPREV to the interval containing the char before PT.
Either one may be null. They may be equal. */
/* We could cache this and save time. */
- from = find_interval (BUF_INTERVALS (buffer), buffer_point);
- if (buffer_point == BUF_BEGV (buffer))
+ from = find_interval (BUF_INTERVALS (current_buffer), buffer_point);
+ if (buffer_point == BEGV)
fromprev = 0;
- else if (from && from->position == BUF_PT (buffer))
+ else if (from && from->position == PT)
fromprev = previous_interval (from);
- else if (buffer_point != BUF_PT (buffer))
+ else if (buffer_point != PT)
fromprev = from, from = 0;
else
fromprev = from;
if (to == from && toprev == fromprev && INTERVAL_VISIBLE_P (to)
&& ! have_overlays)
{
- temp_set_point_both (buffer, charpos, bytepos);
+ temp_set_point_both (current_buffer, charpos, bytepos);
return;
}
if (! NILP (intangible_propval))
{
- while (XINT (pos) > BUF_BEGV (buffer)
+ while (XINT (pos) > BEGV
&& EQ (Fget_char_property (make_number (XINT (pos) - 1),
Qintangible, Qnil),
intangible_propval))
if (! NILP (intangible_propval))
{
- while (XINT (pos) < BUF_ZV (buffer)
+ while (XINT (pos) < ZV
&& EQ (Fget_char_property (pos, Qintangible, Qnil),
intangible_propval))
pos = Fnext_char_property_change (pos, Qnil);
}
}
- bytepos = buf_charpos_to_bytepos (buffer, charpos);
+ bytepos = buf_charpos_to_bytepos (current_buffer, charpos);
}
if (charpos != original_position)
/* Set TO to the interval containing the char after CHARPOS,
and TOPREV to the interval containing the char before CHARPOS.
Either one may be null. They may be equal. */
- to = find_interval (BUF_INTERVALS (buffer), charpos);
- if (charpos == BUF_BEGV (buffer))
+ to = find_interval (BUF_INTERVALS (current_buffer), charpos);
+ if (charpos == BEGV)
toprev = 0;
else if (to && to->position == charpos)
toprev = previous_interval (to);
and TOPREV is the interval before the stopping point.
One or the other may be null. */
- temp_set_point_both (buffer, charpos, bytepos);
+ temp_set_point_both (current_buffer, charpos, bytepos);
/* We run point-left and point-entered hooks here, if the
two intervals are not equivalent. These hooks take
old_zv = BUF_ZV (buffer);
old_begv_byte = BUF_BEGV_BYTE (buffer);
old_zv_byte = BUF_ZV_BYTE (buffer);
- BUF_BEGV (buffer) = BUF_BEG (buffer);
- BUF_ZV (buffer) = BUF_Z (buffer);
- BUF_BEGV_BYTE (buffer) = BUF_BEG_BYTE (buffer);
- BUF_ZV_BYTE (buffer) = BUF_Z_BYTE (buffer);
+
+ SET_BUF_BEGV_BOTH (buffer, BUF_BEG (buffer), BUF_BEG_BYTE (buffer));
+ SET_BUF_ZV_BOTH (buffer, BUF_Z (buffer), BUF_Z_BYTE (buffer));
XSETFASTINT (lispy_position, position);
XSETBUFFER (lispy_buffer, buffer);
if (NILP (prop))
prop = get_pos_property (lispy_position, type, lispy_buffer);
- BUF_BEGV (buffer) = old_begv;
- BUF_ZV (buffer) = old_zv;
- BUF_BEGV_BYTE (buffer) = old_begv_byte;
- BUF_ZV_BYTE (buffer) = old_zv_byte;
+ SET_BUF_BEGV_BOTH (buffer, old_begv, old_begv_byte);
+ SET_BUF_ZV_BOTH (buffer, old_zv, old_zv_byte);
/* Use the local map only if it is valid. */
prop = get_keymap (prop, 0, 0);
HCoop / bpt / emacs.git / blobdiff