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[layout] Only update buffer digest if buffer changed by a pause

This commit is contained in:
Behdad Esfahbod 2022-11-16 17:49:44 -07:00
parent 8b2a211123
commit 27a8fe7d58
10 changed files with 93 additions and 62 deletions
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7
src/hb-ot-layout.cc
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@ -1986,13 +1986,14 @@ inline void hb_ot_map_t::apply (const Proxy &proxy,
if (stage->pause_func)
{
stage->pause_func (plan, font, buffer);
/* Refresh working buffer digest since buffer content
* might have changed. */
if (stage->pause_func (plan, font, buffer))
{
/* Refresh working buffer digest since buffer changed. */
c.digest = buffer->digest ();
}
}
}
}
void hb_ot_map_t::substitute (const hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer) const
{

3
src/hb-ot-layout.hh
View File

@ -552,7 +552,7 @@ _hb_glyph_info_clear_substituted (hb_glyph_info_t *info)
info->glyph_props() &= ~(HB_OT_LAYOUT_GLYPH_PROPS_SUBSTITUTED);
}
static inline void
static inline bool
_hb_clear_substitution_flags (const hb_ot_shape_plan_t *plan HB_UNUSED,
hb_font_t *font HB_UNUSED,
hb_buffer_t *buffer)
@ -561,6 +561,7 @@ _hb_clear_substitution_flags (const hb_ot_shape_plan_t *plan HB_UNUSED,
unsigned int count = buffer->len;
for (unsigned int i = 0; i < count; i++)
_hb_glyph_info_clear_substituted (&info[i]);
return false;
}

2
src/hb-ot-map.hh
View File

@ -78,7 +78,7 @@ struct hb_ot_map_t
}
};
typedef void (*pause_func_t) (const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer);
typedef bool (*pause_func_t) (const struct hb_ot_shape_plan_t *plan, hb_font_t *font, hb_buffer_t *buffer);
struct stage_map_t {
unsigned int last_lookup; /* Cumulative */

19
src/hb-ot-shaper-arabic.cc
View File

@ -161,22 +161,23 @@ static const struct arabic_state_table_entry {
};
static void
static bool
arabic_fallback_shape (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
static void
static bool
record_stch (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
static void
static bool
deallocate_buffer_var (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer)
{
HB_BUFFER_DEALLOCATE_VAR (buffer, arabic_shaping_action);
return false;
}
static void
@ -412,19 +413,19 @@ setup_masks_arabic (const hb_ot_shape_plan_t *plan,
setup_masks_arabic_plan (arabic_plan, buffer, plan->props.script);
}
static void
static bool
arabic_fallback_shape (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer)
{
#ifdef HB_NO_OT_SHAPER_ARABIC_FALLBACK
return;
return false;
#endif
const arabic_shape_plan_t *arabic_plan = (const arabic_shape_plan_t *) plan->data;
if (!arabic_plan->do_fallback)
return;
return false;
retry:
arabic_fallback_plan_t *fallback_plan = arabic_plan->fallback_plan;
@ -440,6 +441,7 @@ retry:
}
arabic_fallback_plan_shape (fallback_plan, font, buffer);
return true;
}
/*
@ -450,14 +452,14 @@ retry:
* marks can use it as well.
*/
static void
static bool
record_stch (const hb_ot_shape_plan_t *plan,
hb_font_t *font HB_UNUSED,
hb_buffer_t *buffer)
{
const arabic_shape_plan_t *arabic_plan = (const arabic_shape_plan_t *) plan->data;
if (!arabic_plan->has_stch)
return;
return false;
/* 'stch' feature was just applied. Look for anything that multiplied,
* and record it for stch treatment later. Note that rtlm, frac, etc
@ -473,6 +475,7 @@ record_stch (const hb_ot_shape_plan_t *plan,
info[i].arabic_shaping_action() = comp % 2 ? STCH_REPEATING : STCH_FIXED;
buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_ARABIC_HAS_STCH;
}
return false;
}
static void

27
src/hb-ot-shaper-indic.cc
View File

@ -223,15 +223,15 @@ enum {
INDIC_BASIC_FEATURES = INDIC_INIT, /* Don't forget to update this! */
};
static void
static bool
setup_syllables_indic (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
static void
static bool
initial_reordering_indic (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
static void
static bool
final_reordering_indic (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
@ -413,7 +413,7 @@ setup_masks_indic (const hb_ot_shape_plan_t *plan HB_UNUSED,
set_indic_properties (info[i]);
}
static void
static bool
setup_syllables_indic (const hb_ot_shape_plan_t *plan HB_UNUSED,
hb_font_t *font HB_UNUSED,
hb_buffer_t *buffer)
@ -422,6 +422,7 @@ setup_syllables_indic (const hb_ot_shape_plan_t *plan HB_UNUSED,
find_syllables_indic (buffer);
foreach_syllable (buffer, start, end)
buffer->unsafe_to_break (start, end);
return false;
}
static int
@ -981,25 +982,29 @@ initial_reordering_syllable_indic (const hb_ot_shape_plan_t *plan,
}
}
static void
static bool
initial_reordering_indic (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer)
{
bool ret = false;
if (!buffer->message (font, "start reordering indic initial"))
return;
return ret;
update_consonant_positions_indic (plan, font, buffer);
hb_syllabic_insert_dotted_circles (font, buffer,
if (hb_syllabic_insert_dotted_circles (font, buffer,
indic_broken_cluster,
I_Cat(DOTTEDCIRCLE),
I_Cat(Repha),
POS_END);
POS_END))
ret = true;
foreach_syllable (buffer, start, end)
initial_reordering_syllable_indic (plan, font->face, buffer, start, end);
(void) buffer->message (font, "end reordering indic initial");
return ret;
}
static void
@ -1465,13 +1470,13 @@ final_reordering_syllable_indic (const hb_ot_shape_plan_t *plan,
}
static void
static bool
final_reordering_indic (const hb_ot_shape_plan_t *plan,
hb_font_t *font HB_UNUSED,
hb_buffer_t *buffer)
{
unsigned int count = buffer->len;
if (unlikely (!count)) return;
if (unlikely (!count)) return false;
if (buffer->message (font, "start reordering indic final")) {
foreach_syllable (buffer, start, end)
@ -1481,6 +1486,8 @@ final_reordering_indic (const hb_ot_shape_plan_t *plan,
HB_BUFFER_DEALLOCATE_VAR (buffer, indic_category);
HB_BUFFER_DEALLOCATE_VAR (buffer, indic_position);
return false;
}

17
src/hb-ot-shaper-khmer.cc
View File

@ -89,11 +89,11 @@ set_khmer_properties (hb_glyph_info_t &info)
info.khmer_category() = (khmer_category_t) (type & 0xFFu);
}
static void
static bool
setup_syllables_khmer (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
static void
static bool
reorder_khmer (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
@ -192,7 +192,7 @@ setup_masks_khmer (const hb_ot_shape_plan_t *plan HB_UNUSED,
set_khmer_properties (info[i]);
}
static void
static bool
setup_syllables_khmer (const hb_ot_shape_plan_t *plan HB_UNUSED,
hb_font_t *font HB_UNUSED,
hb_buffer_t *buffer)
@ -201,6 +201,7 @@ setup_syllables_khmer (const hb_ot_shape_plan_t *plan HB_UNUSED,
find_syllables_khmer (buffer);
foreach_syllable (buffer, start, end)
buffer->unsafe_to_break (start, end);
return false;
}
@ -303,23 +304,27 @@ reorder_syllable_khmer (const hb_ot_shape_plan_t *plan,
}
}
static void
static bool
reorder_khmer (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer)
{
bool ret = false;
if (buffer->message (font, "start reordering khmer"))
{
hb_syllabic_insert_dotted_circles (font, buffer,
if (hb_syllabic_insert_dotted_circles (font, buffer,
khmer_broken_cluster,
K_Cat(DOTTEDCIRCLE),
(unsigned) -1);
(unsigned) -1))
ret = true;
foreach_syllable (buffer, start, end)
reorder_syllable_khmer (plan, font->face, buffer, start, end);
(void) buffer->message (font, "end reordering khmer");
}
HB_BUFFER_DEALLOCATE_VAR (buffer, khmer_category);
return ret;
}

17
src/hb-ot-shaper-myanmar.cc
View File

@ -98,11 +98,11 @@ is_consonant_myanmar (const hb_glyph_info_t &info)
}
static void
static bool
setup_syllables_myanmar (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
static void
static bool
reorder_myanmar (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
@ -150,7 +150,7 @@ setup_masks_myanmar (const hb_ot_shape_plan_t *plan HB_UNUSED,
set_myanmar_properties (info[i]);
}
static void
static bool
setup_syllables_myanmar (const hb_ot_shape_plan_t *plan HB_UNUSED,
hb_font_t *font HB_UNUSED,
hb_buffer_t *buffer)
@ -159,6 +159,7 @@ setup_syllables_myanmar (const hb_ot_shape_plan_t *plan HB_UNUSED,
find_syllables_myanmar (buffer);
foreach_syllable (buffer, start, end)
buffer->unsafe_to_break (start, end);
return false;
}
static int
@ -318,16 +319,18 @@ reorder_syllable_myanmar (const hb_ot_shape_plan_t *plan HB_UNUSED,
}
}
static void
static bool
reorder_myanmar (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer)
{
bool ret = false;
if (buffer->message (font, "start reordering myanmar"))
{
hb_syllabic_insert_dotted_circles (font, buffer,
if (hb_syllabic_insert_dotted_circles (font, buffer,
myanmar_broken_cluster,
M_Cat(DOTTEDCIRCLE));
M_Cat(DOTTEDCIRCLE)))
ret = true;
foreach_syllable (buffer, start, end)
reorder_syllable_myanmar (plan, font->face, buffer, start, end);
@ -336,6 +339,8 @@ reorder_myanmar (const hb_ot_shape_plan_t *plan,
HB_BUFFER_DEALLOCATE_VAR (buffer, myanmar_category);
HB_BUFFER_DEALLOCATE_VAR (buffer, myanmar_position);
return ret;
}

12
src/hb-ot-shaper-syllabic.cc
View File

@ -29,7 +29,7 @@
#include "hb-ot-shaper-syllabic.hh"
void
bool
hb_syllabic_insert_dotted_circles (hb_font_t *font,
hb_buffer_t *buffer,
unsigned int broken_syllable_type,
@ -38,13 +38,13 @@ hb_syllabic_insert_dotted_circles (hb_font_t *font,
int dottedcircle_position)
{
if (unlikely (buffer->flags & HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE))
return;
return false;
if (likely (!(buffer->scratch_flags & HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE)))
return;
return false;
hb_codepoint_t dottedcircle_glyph;
if (!font->get_nominal_glyph (0x25CCu, &dottedcircle_glyph))
return;
return false;
hb_glyph_info_t dottedcircle = {0};
dottedcircle.codepoint = 0x25CCu;
@ -84,14 +84,16 @@ hb_syllabic_insert_dotted_circles (hb_font_t *font,
(void) buffer->next_glyph ();
}
buffer->sync ();
return true;
}
HB_INTERNAL void
HB_INTERNAL bool
hb_syllabic_clear_var (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer)
{
HB_BUFFER_DEALLOCATE_VAR (buffer, syllable);
return false;
}

4
src/hb-ot-shaper-syllabic.hh
View File

@ -30,7 +30,7 @@
#include "hb-ot-shaper.hh"
HB_INTERNAL void
HB_INTERNAL bool
hb_syllabic_insert_dotted_circles (hb_font_t *font,
hb_buffer_t *buffer,
unsigned int broken_syllable_type,
@ -38,7 +38,7 @@ hb_syllabic_insert_dotted_circles (hb_font_t *font,
int repha_category = -1,
int dottedcircle_position = -1);
HB_INTERNAL void
HB_INTERNAL bool
hb_syllabic_clear_var (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);

29
src/hb-ot-shaper-use.cc
View File

@ -89,19 +89,19 @@ use_other_features[] =
HB_TAG('p','s','t','s'),
};
static void
static bool
setup_syllables_use (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
static void
static bool
record_rphf_use (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
static void
static bool
record_pref_use (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
static void
static bool
reorder_use (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer);
@ -293,7 +293,7 @@ setup_topographical_masks (const hb_ot_shape_plan_t *plan,
}
}
static void
static bool
setup_syllables_use (const hb_ot_shape_plan_t *plan,
hb_font_t *font HB_UNUSED,
hb_buffer_t *buffer)
@ -304,9 +304,10 @@ setup_syllables_use (const hb_ot_shape_plan_t *plan,
buffer->unsafe_to_break (start, end);
setup_rphf_mask (plan, buffer);
setup_topographical_masks (plan, buffer);
return false;
}
static void
static bool
record_rphf_use (const hb_ot_shape_plan_t *plan,
hb_font_t *font HB_UNUSED,
hb_buffer_t *buffer)
@ -314,7 +315,7 @@ record_rphf_use (const hb_ot_shape_plan_t *plan,
const use_shape_plan_t *use_plan = (const use_shape_plan_t *) plan->data;
hb_mask_t mask = use_plan->rphf_mask;
if (!mask) return;
if (!mask) return false;
hb_glyph_info_t *info = buffer->info;
foreach_syllable (buffer, start, end)
@ -327,9 +328,10 @@ record_rphf_use (const hb_ot_shape_plan_t *plan,
break;
}
}
return false;
}
static void
static bool
record_pref_use (const hb_ot_shape_plan_t *plan HB_UNUSED,
hb_font_t *font HB_UNUSED,
hb_buffer_t *buffer)
@ -346,6 +348,7 @@ record_pref_use (const hb_ot_shape_plan_t *plan HB_UNUSED,
break;
}
}
return false;
}
static inline bool
@ -438,17 +441,19 @@ reorder_syllable_use (hb_buffer_t *buffer, unsigned int start, unsigned int end)
}
}
static void
static bool
reorder_use (const hb_ot_shape_plan_t *plan,
hb_font_t *font,
hb_buffer_t *buffer)
{
bool ret = false;
if (buffer->message (font, "start reordering USE"))
{
hb_syllabic_insert_dotted_circles (font, buffer,
if (hb_syllabic_insert_dotted_circles (font, buffer,
use_broken_cluster,
USE(B),
USE(R));
USE(R)))
ret = true;
foreach_syllable (buffer, start, end)
reorder_syllable_use (buffer, start, end);
@ -457,6 +462,8 @@ reorder_use (const hb_ot_shape_plan_t *plan,
}
HB_BUFFER_DEALLOCATE_VAR (buffer, use_category);
return ret;
}