[syllabic] Use a buffer scratch-flag for has-broken-syllable

src/hb-buffer.hh

@@ -70,6 +70,7 @@ enum hb_buffer_scratch_flags_t {
   HB_BUFFER_SCRATCH_FLAG_HAS_GPOS_ATTACHMENT		= 0x00000008u,
   HB_BUFFER_SCRATCH_FLAG_HAS_CGJ			= 0x00000010u,
   HB_BUFFER_SCRATCH_FLAG_HAS_GLYPH_FLAGS		= 0x00000020u,
+  HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE		= 0x00000040u,
 
   /* Reserved for shapers' internal use. */
   HB_BUFFER_SCRATCH_FLAG_SHAPER0			= 0x01000000u,

src/hb-ot-shaper-indic-machine.hh

@@ -498,7 +498,7 @@ _eof_trans:
 	break;
 	case 15:
 #line 98 "hb-ot-shaper-indic-machine.rl"
-	{te = p;p--;{ found_syllable (indic_broken_cluster); }}
+	{te = p;p--;{ found_syllable (indic_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }}
 	break;
 	case 16:
 #line 99 "hb-ot-shaper-indic-machine.rl"
@@ -522,7 +522,7 @@ _eof_trans:
 	break;
 	case 4:
 #line 98 "hb-ot-shaper-indic-machine.rl"
-	{{p = ((te))-1;}{ found_syllable (indic_broken_cluster); }}
+	{{p = ((te))-1;}{ found_syllable (indic_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }}
 	break;
 	case 6:
 #line 1 "NONE"
@@ -531,7 +531,7 @@ _eof_trans:
 	{{p = ((te))-1;} found_syllable (indic_consonant_syllable); }
 	break;
 	case 5:
-	{{p = ((te))-1;} found_syllable (indic_broken_cluster); }
+	{{p = ((te))-1;} found_syllable (indic_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }
 	break;
 	case 6:
 	{{p = ((te))-1;} found_syllable (indic_non_indic_cluster); }

src/hb-ot-shaper-indic-machine.rl

@@ -95,7 +95,7 @@ main := |*
 	vowel_syllable		=> { found_syllable (indic_vowel_syllable); };
 	standalone_cluster	=> { found_syllable (indic_standalone_cluster); };
 	symbol_cluster		=> { found_syllable (indic_symbol_cluster); };
-	broken_cluster		=> { found_syllable (indic_broken_cluster); };
+	broken_cluster		=> { found_syllable (indic_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; };
 	other			=> { found_syllable (indic_non_indic_cluster); };
 *|;
 

src/hb-ot-shaper-khmer-machine.hh

@@ -324,7 +324,7 @@ _eof_trans:
 	break;
 	case 12:
 #line 81 "hb-ot-shaper-khmer-machine.rl"
-	{te = p;p--;{ found_syllable (khmer_broken_cluster); }}
+	{te = p;p--;{ found_syllable (khmer_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }}
 	break;
 	case 11:
 #line 82 "hb-ot-shaper-khmer-machine.rl"
@@ -336,13 +336,13 @@ _eof_trans:
 	break;
 	case 5:
 #line 81 "hb-ot-shaper-khmer-machine.rl"
-	{{p = ((te))-1;}{ found_syllable (khmer_broken_cluster); }}
+	{{p = ((te))-1;}{ found_syllable (khmer_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }}
 	break;
 	case 3:
 #line 1 "NONE"
 	{	switch( act ) {
 	case 2:
-	{{p = ((te))-1;} found_syllable (khmer_broken_cluster); }
+	{{p = ((te))-1;} found_syllable (khmer_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }
 	break;
 	case 3:
 	{{p = ((te))-1;} found_syllable (khmer_non_khmer_cluster); }

src/hb-ot-shaper-khmer-machine.rl

@@ -78,7 +78,7 @@ other =			any;
 
 main := |*
 	consonant_syllable	=> { found_syllable (khmer_consonant_syllable); };
-	broken_cluster		=> { found_syllable (khmer_broken_cluster); };
+	broken_cluster		=> { found_syllable (khmer_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; };
 	other			=> { found_syllable (khmer_non_khmer_cluster); };
 *|;
 

src/hb-ot-shaper-myanmar-machine.hh

@@ -435,7 +435,7 @@ _eof_trans:
 	break;
 	case 8:
 #line 97 "hb-ot-shaper-myanmar-machine.rl"
-	{te = p+1;{ found_syllable (myanmar_broken_cluster); }}
+	{te = p+1;{ found_syllable (myanmar_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }}
 	break;
 	case 3:
 #line 98 "hb-ot-shaper-myanmar-machine.rl"
@@ -447,7 +447,7 @@ _eof_trans:
 	break;
 	case 7:
 #line 97 "hb-ot-shaper-myanmar-machine.rl"
-	{te = p;p--;{ found_syllable (myanmar_broken_cluster); }}
+	{te = p;p--;{ found_syllable (myanmar_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }}
 	break;
 	case 9:
 #line 98 "hb-ot-shaper-myanmar-machine.rl"

src/hb-ot-shaper-myanmar-machine.rl

@@ -94,7 +94,7 @@ main := |*
 	consonant_syllable	=> { found_syllable (myanmar_consonant_syllable); };
 	j			=> { found_syllable (myanmar_non_myanmar_cluster); };
 	punctuation_cluster	=> { found_syllable (myanmar_punctuation_cluster); };
-	broken_cluster		=> { found_syllable (myanmar_broken_cluster); };
+	broken_cluster		=> { found_syllable (myanmar_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; };
 	other			=> { found_syllable (myanmar_non_myanmar_cluster); };
 *|;
 

src/hb-ot-shaper-syllabic.cc

@@ -39,22 +39,9 @@ hb_syllabic_insert_dotted_circles (hb_font_t *font,
 {
   if (unlikely (buffer->flags & HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE))
     return;
-
-  /* Note: This loop is extra overhead, but should not be measurable.
-   * TODO Use a buffer scratch flag to remove the loop. */
-  bool has_broken_syllables = false;
-  unsigned int count = buffer->len;
-  hb_glyph_info_t *info = buffer->info;
-  for (unsigned int i = 0; i < count; i++)
-    if ((info[i].syllable() & 0x0F) == broken_syllable_type)
-    {
-      has_broken_syllables = true;
-      break;
-    }
-  if (likely (!has_broken_syllables))
+  if (likely (!(buffer->scratch_flags & HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE)))
     return;
 
-
   hb_codepoint_t dottedcircle_glyph;
   if (!font->get_nominal_glyph (0x25CCu, &dottedcircle_glyph))
     return;

src/hb-ot-shaper-use-machine.hh

@@ -753,7 +753,7 @@ _eof_trans:
 	break;
 	case 4:
 #line 176 "hb-ot-shaper-use-machine.rl"
-	{te = p+1;{ found_syllable (use_broken_cluster); }}
+	{te = p+1;{ found_syllable (use_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }}
 	break;
 	case 3:
 #line 177 "hb-ot-shaper-use-machine.rl"
@@ -785,7 +785,7 @@ _eof_trans:
 	break;
 	case 15:
 #line 176 "hb-ot-shaper-use-machine.rl"
-	{te = p;p--;{ found_syllable (use_broken_cluster); }}
+	{te = p;p--;{ found_syllable (use_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }}
 	break;
 	case 16:
 #line 177 "hb-ot-shaper-use-machine.rl"

src/hb-ot-shaper-use-machine.rl

@@ -173,7 +173,7 @@ main := |*
 	numeral_cluster				=> { found_syllable (use_numeral_cluster); };
 	symbol_cluster				=> { found_syllable (use_symbol_cluster); };
 	hieroglyph_cluster			=> { found_syllable (use_hieroglyph_cluster); };
-	broken_cluster				=> { found_syllable (use_broken_cluster); };
+	broken_cluster				=> { found_syllable (use_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; };
 	other					=> { found_syllable (use_non_cluster); };
 *|;