/* Composite sequence support.
- Copyright (C) 2001-2013 Free Software Foundation, Inc.
+ Copyright (C) 2001-2014 Free Software Foundation, Inc.
Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
National Institute of Advanced Industrial Science and Technology (AIST)
Registration Number H14PRO021
#include <config.h>
-#define COMPOSITE_INLINE EXTERN_INLINE
-
#include "lisp.h"
#include "character.h"
#include "buffer.h"
auto-compositions. */
#define MAX_AUTO_COMPOSITION_LOOKBACK 3
-/* Temporary variable used in macros COMPOSITION_XXX. */
-Lisp_Object composition_temp;
-
-\f
/* Return COMPOSITION-ID of a composition at buffer position
CHARPOS/BYTEPOS and length NCHARS. The `composition' property of
the sequence is PROP. STRING, if non-nil, is a string that
valid too. */
if (from > BEGV
&& find_composition (from - 1, -1, &start, &end, &prop, Qnil)
- && !COMPOSITION_VALID_P (start, end, prop))
+ && !composition_valid_p (start, end, prop))
from = start;
if (to < ZV
&& find_composition (to, -1, &start, &end, &prop, Qnil)
- && !COMPOSITION_VALID_P (start, end, prop))
+ && !composition_valid_p (start, end, prop))
to = end;
if (!NILP (Ffboundp (func)))
call2 (func, make_number (from), make_number (to));
latter to the copy of it. */
if (from > BEGV
&& find_composition (from - 1, -1, &start, &end, &prop, Qnil)
- && COMPOSITION_VALID_P (start, end, prop))
+ && composition_valid_p (start, end, prop))
{
min_pos = start;
if (end > to)
}
else if (from < ZV
&& find_composition (from, -1, &start, &from, &prop, Qnil)
- && COMPOSITION_VALID_P (start, from, prop))
+ && composition_valid_p (start, from, prop))
{
if (from > to)
max_pos = from;
(to - 1). */
while (from < to - 1
&& find_composition (from, to, &start, &from, &prop, Qnil)
- && COMPOSITION_VALID_P (start, from, prop)
+ && composition_valid_p (start, from, prop)
&& from < to - 1)
run_composition_function (start, from, prop);
}
{
if (from < to
&& find_composition (to - 1, -1, &start, &end, &prop, Qnil)
- && COMPOSITION_VALID_P (start, end, prop))
+ && composition_valid_p (start, end, prop))
{
/* TO should be also at composition boundary. But,
insertion or deletion will make two compositions adjacent
}
else if (to < ZV
&& find_composition (to, -1, &start, &end, &prop, Qnil)
- && COMPOSITION_VALID_P (start, end, prop))
+ && composition_valid_p (start, end, prop))
{
run_composition_function (start, end, prop);
max_pos = end;
specbind (Qinhibit_point_motion_hooks, Qt);
Fremove_list_of_text_properties (make_number (min_pos),
make_number (max_pos),
- Fcons (Qauto_composed, Qnil), Qnil);
+ list1 (Qauto_composed), Qnil);
unbind_to (count, Qnil);
}
}
len = j;
}
- lint_assume (len <= TYPE_MAXIMUM (ptrdiff_t) - 2);
copy = Fmake_vector (make_number (len + 2), Qnil);
LGSTRING_SET_HEADER (copy, Fcopy_sequence (header));
for (i = 0; i < len; i++)
static Lisp_Object gstring_work_headers;
static Lisp_Object
-fill_gstring_header (Lisp_Object header, Lisp_Object start, Lisp_Object end,
- Lisp_Object font_object, Lisp_Object string)
+fill_gstring_header (Lisp_Object header, ptrdiff_t from, ptrdiff_t from_byte,
+ ptrdiff_t to, Lisp_Object font_object, Lisp_Object string)
{
- ptrdiff_t from, to, from_byte;
- ptrdiff_t len, i;
+ ptrdiff_t len = to - from, i;
- if (NILP (string))
- {
- if (NILP (BVAR (current_buffer, enable_multibyte_characters)))
- error ("Attempt to shape unibyte text");
- validate_region (&start, &end);
- from = XFASTINT (start);
- to = XFASTINT (end);
- from_byte = CHAR_TO_BYTE (from);
- }
- else
- {
- CHECK_STRING (string);
- if (! STRING_MULTIBYTE (string))
- error ("Attempt to shape unibyte text");
- /* The caller checks that START and END are nonnegative integers. */
- if (! (XINT (start) <= XINT (end) && XINT (end) <= SCHARS (string)))
- args_out_of_range_3 (string, start, end);
- from = XINT (start);
- to = XINT (end);
- from_byte = string_char_to_byte (string, from);
- }
-
- len = to - from;
if (len == 0)
error ("Attempt to shape zero-length text");
if (VECTORP (header))
Lisp_Object string)
{
ptrdiff_t count = SPECPDL_INDEX ();
- FRAME_PTR f = XFRAME (win->frame);
+ struct frame *f = XFRAME (win->frame);
Lisp_Object pos = make_number (charpos);
ptrdiff_t to;
ptrdiff_t pt = PT, pt_byte = PT_BYTE;
if (charpos < endpos
&& find_composition (charpos, endpos, &start, &end, &prop, string)
&& start >= charpos
- && COMPOSITION_VALID_P (start, end, prop))
+ && composition_valid_p (start, end, prop))
{
cmp_it->stop_pos = endpos = start;
cmp_it->ch = -1;
/* Check if the character at CHARPOS (and BYTEPOS) is composed
(possibly with the following characters) on window W. ENDPOS limits
- characters to be composed. FACE, in non-NULL, is a base face of
+ characters to be composed. FACE, if non-NULL, is a base face of
the character. If STRING is not nil, it is a string containing the
character to check, and CHARPOS and BYTEPOS are indices in the
string. In that case, FACE must not be NULL.
cmp_it->width = 0;
for (i = cmp_it->nchars - 1; i >= 0; i--)
{
- c = XINT (LGSTRING_CHAR (gstring, i));
+ c = XINT (LGSTRING_CHAR (gstring, from + i));
cmp_it->nbytes += CHAR_BYTES (c);
cmp_it->width += CHAR_WIDTH (c);
}
/* At first check the static composition. */
if (get_property_and_range (new_pt, Qcomposition, &val, &beg, &end, Qnil)
- && COMPOSITION_VALID_P (beg, end, val))
+ && composition_valid_p (beg, end, val))
{
if (beg < new_pt /* && end > new_pt <- It's always the case. */
&& (last_pt <= beg || last_pt >= end))
If the optional 4th argument STRING is not nil, it is a string
containing the target characters between indices FROM and TO.
+Otherwise FROM and TO are character positions in current buffer;
+they can be in either order, and can be integers or markers.
A glyph-string is a vector containing information about how to display
a specific character sequence. The format is:
(Lisp_Object from, Lisp_Object to, Lisp_Object font_object, Lisp_Object string)
{
Lisp_Object gstring, header;
- ptrdiff_t frompos, topos;
+ ptrdiff_t frompos, frombyte, topos;
- CHECK_NATNUM (from);
- CHECK_NATNUM (to);
if (! FONT_OBJECT_P (font_object))
{
struct coding_system *coding;
font_object = CODING_ID_NAME (coding->id);
}
- header = fill_gstring_header (Qnil, from, to, font_object, string);
+ if (NILP (string))
+ {
+ if (NILP (BVAR (current_buffer, enable_multibyte_characters)))
+ error ("Attempt to shape unibyte text");
+ validate_region (&from, &to);
+ frompos = XFASTINT (from);
+ topos = XFASTINT (to);
+ frombyte = CHAR_TO_BYTE (frompos);
+ }
+ else
+ {
+ CHECK_NATNUM (from);
+ CHECK_NATNUM (to);
+ CHECK_STRING (string);
+ if (! STRING_MULTIBYTE (string))
+ error ("Attempt to shape unibyte text");
+ if (! (XINT (from) <= XINT (to) && XINT (to) <= SCHARS (string)))
+ args_out_of_range_3 (string, from, to);
+ frompos = XFASTINT (from);
+ topos = XFASTINT (to);
+ frombyte = string_char_to_byte (string, frompos);
+ }
+
+ header = fill_gstring_header (Qnil, frompos, frombyte,
+ topos, font_object, string);
gstring = gstring_lookup_cache (header);
if (! NILP (gstring))
return gstring;
- frompos = XINT (from);
- topos = XINT (to);
if (LGSTRING_GLYPH_LEN (gstring_work) < topos - frompos)
gstring_work = Fmake_vector (make_number (topos - frompos + 2), Qnil);
LGSTRING_SET_HEADER (gstring_work, header);
&& (e <= XINT (pos) ? e > end : s < start))
return list3 (make_number (s), make_number (e), gstring);
}
- if (!COMPOSITION_VALID_P (start, end, prop))
- return Fcons (make_number (start), Fcons (make_number (end),
- Fcons (Qnil, Qnil)));
+ if (!composition_valid_p (start, end, prop))
+ return list3 (make_number (start), make_number (end), Qnil);
if (NILP (detail_p))
- return Fcons (make_number (start), Fcons (make_number (end),
- Fcons (Qt, Qnil)));
+ return list3 (make_number (start), make_number (end), Qt);
- if (COMPOSITION_REGISTERD_P (prop))
+ if (composition_registered_p (prop))
id = COMPOSITION_ID (prop);
else
{
if (id >= 0)
{
Lisp_Object components, relative_p, mod_func;
- enum composition_method method = COMPOSITION_METHOD (prop);
+ enum composition_method method = composition_method (prop);
int width = composition_table[id]->width;
components = Fcopy_sequence (COMPOSITION_COMPONENTS (prop));
relative_p = (method == COMPOSITION_WITH_RULE_ALTCHARS
? Qnil : Qt);
mod_func = COMPOSITION_MODIFICATION_FUNC (prop);
- tail = Fcons (components,
- Fcons (relative_p,
- Fcons (mod_func,
- Fcons (make_number (width), Qnil))));
+ tail = list4 (components, relative_p, mod_func, make_number (width));
}
else
tail = Qnil;