Imported Upstream version 1.8.1

[platform/upstream/harfbuzz.git] / src / hb-ot-shape-complex-indic-machine.rl

diff --git a/src/hb-ot-shape-complex-indic-machine.rl b/src/hb-ot-shape-complex-indic-machine.rl
index b6a372e..35e7ce9 100644 (file)
--- a/src/hb-ot-shape-complex-indic-machine.rl
+++ b/src/hb-ot-shape-complex-indic-machine.rl
@@ -38,7 +38,6 @@
 %%{
 
 # Same order as enum indic_category_t.  Not sure how to avoid duplication.
-X    = 0;
 C    = 1;
 V    = 2;
 N    = 3;
@@ -47,61 +46,65 @@ ZWNJ = 5;
 ZWJ  = 6;
 M    = 7;
 SM   = 8;
-VD   = 9;
 A    = 10;
-NBSP = 11;
+PLACEHOLDER = 11;
 DOTTEDCIRCLE = 12;
-RS   = 13;
-Coeng = 14;
+RS    = 13;
 Repha = 15;
 Ra    = 16;
+CM    = 17;
+Symbol= 18;
+CS    = 19;
 
 c = (C | Ra);                  # is_consonant
 n = ((ZWNJ?.RS)? (N.N?)?);     # is_consonant_modifier
 z = ZWJ|ZWNJ;                  # is_joiner
-h = H | Coeng;                 # is_halant_or_coeng
 reph = (Ra H | Repha);         # possible reph
 
-cn = c.n?;
+cn = c.ZWJ?.n?;
 forced_rakar = ZWJ H ZWJ Ra;
+symbol = Symbol.N?;
 matra_group = z{0,3}.M.N?.(H | forced_rakar)?;
-syllable_tail = (SM.ZWNJ?)? (Coeng (cn|V))? (VD VD?)?;
-place_holder = NBSP | DOTTEDCIRCLE;
-halant_group = (z?.h.ZWJ?);
-final_halant_group = halant_group | h.ZWNJ;
-halant_or_matra_group = (final_halant_group | matra_group{0,4});
-
-
-consonant_syllable =   Repha? (cn.halant_group){0,4} cn A? halant_or_matra_group? syllable_tail;
-vowel_syllable =       reph? V.n? (ZWJ | (halant_group.cn){0,4} halant_or_matra_group? syllable_tail);
-standalone_cluster =   reph? place_holder.n? (halant_group.cn){0,4} halant_or_matra_group? syllable_tail;
+syllable_tail = (z?.SM.SM?.ZWNJ?)? A{0,3}?;
+halant_group = (z?.H.(ZWJ.N?)?);
+final_halant_group = halant_group | H.ZWNJ;
+medial_group = CM?;
+halant_or_matra_group = (final_halant_group | (H.ZWJ)? matra_group{0,4});
+
+
+consonant_syllable =   (Repha|CS)? (cn.halant_group){0,4} cn medial_group halant_or_matra_group syllable_tail;
+vowel_syllable =       reph? V.n? (ZWJ | (halant_group.cn){0,4} medial_group halant_or_matra_group syllable_tail);
+standalone_cluster =   ((Repha|CS)? PLACEHOLDER | reph? DOTTEDCIRCLE).n? (halant_group.cn){0,4} medial_group halant_or_matra_group syllable_tail;
+symbol_cluster =       symbol syllable_tail;
+broken_cluster =       reph? n? (halant_group.cn){0,4} medial_group halant_or_matra_group syllable_tail;
 other =                        any;
 
 main := |*
-       consonant_syllable      => { process_syllable (consonant_syllable); };
-       vowel_syllable          => { process_syllable (vowel_syllable); };
-       standalone_cluster      => { process_syllable (standalone_cluster); };
-       other                   => { process_syllable (non_indic); };
+       consonant_syllable      => { found_syllable (consonant_syllable); };
+       vowel_syllable          => { found_syllable (vowel_syllable); };
+       standalone_cluster      => { found_syllable (standalone_cluster); };
+       symbol_cluster          => { found_syllable (symbol_cluster); };
+       broken_cluster          => { found_syllable (broken_cluster); };
+       other                   => { found_syllable (non_indic_cluster); };
 *|;
 
 
 }%%
 
-#define process_syllable(func) \
+#define found_syllable(syllable_type) \
   HB_STMT_START { \
-    if (0) fprintf (stderr, "syllable %d..%d %s\n", last, p+1, #func); \
+    if (0) fprintf (stderr, "syllable %d..%d %s\n", last, p+1, #syllable_type); \
     for (unsigned int i = last; i < p+1; i++) \
-      info[i].syllable() = syllable_serial; \
-    PASTE (initial_reordering_, func) (plan, buffer, last, p+1); \
+      info[i].syllable() = (syllable_serial << 4) | syllable_type; \
     last = p+1; \
     syllable_serial++; \
-    if (unlikely (!syllable_serial)) syllable_serial++; \
+    if (unlikely (syllable_serial == 16)) syllable_serial = 1; \
   } HB_STMT_END
 
 static void
-find_syllables (const hb_ot_shape_plan_t *plan, hb_buffer_t *buffer)
+find_syllables (hb_buffer_t *buffer)
 {
-  unsigned int p, pe, eof, ts, te, act;
+  unsigned int p, pe, eof, ts HB_UNUSED, te, act;
   int cs;
   hb_glyph_info_t *info = buffer->info;
   %%{
@@ -113,7 +116,7 @@ find_syllables (const hb_ot_shape_plan_t *plan, hb_buffer_t *buffer)
   pe = eof = buffer->len;
 
   unsigned int last = 0;
-  uint8_t syllable_serial = 1;
+  unsigned int syllable_serial = 1;
   %%{
     write exec;
   }%%