Roll harfbuzz-ng 3b8fd9c48f4bde368bf2d465c148b9743a9216ee

third_party/harfbuzz-ng/src/hb-ot-shape-complex-private.hh

 /*
- * Copyright © 2010,2011  Google, Inc.
+ * Copyright © 2010,2011,2012  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
  * above copyright notice and the following two paragraphs appear in
  * all copies of this software.
  *
  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
@@ skipping 10 matching lines @@
  *
  * Google Author(s): Behdad Esfahbod
  */
 
 #ifndef HB_OT_SHAPE_COMPLEX_PRIVATE_HH
 #define HB_OT_SHAPE_COMPLEX_PRIVATE_HH
 
 #include "hb-private.hh"
 
 #include "hb-ot-map-private.hh"
+#include "hb-ot-shape-normalize-private.hh"
 
 
 
 /* buffer var allocations, used during the entire shaping process */
-#define general_category() var1.u8[0] /* unicode general_category (hb_unicode_general_category_t) */
-#define combining_class() var1.u8[1] /* unicode combining_class (uint8_t) */
+#define unicode_props0()        var1.u8[0]
+#define unicode_props1()        var1.u8[1]
+
+/* buffer var allocations, used during the GSUB/GPOS processing */
+#define props_cache()           var1.u16[1] /* GSUB/GPOS glyph_props cache */
+#define syllable()              var2.u8[0] /* GSUB/GPOS shaping boundaries */
+#define lig_props()             var2.u8[1] /* GSUB/GPOS ligature tracking */
 
 /* buffer var allocations, used by complex shapers */
-#define complex_var_persistent_u8_0()   var2.u8[0]
-#define complex_var_persistent_u8_1()   var2.u8[1]
-#define complex_var_persistent_u16()    var2.u16[0]
-#define complex_var_temporary_u8_0()    var2.u8[2]
-#define complex_var_temporary_u8_1()    var2.u8[3]
-#define complex_var_temporary_u16()     var2.u16[1]
+#define complex_var_persistent_u8_0()   var2.u8[2]
+#define complex_var_persistent_u8_1()   var2.u8[3]
+#define complex_var_temporary_u8()      var2.u8[0]
 
 
 #define HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS \
   HB_COMPLEX_SHAPER_IMPLEMENT (default) /* should be first */ \
   HB_COMPLEX_SHAPER_IMPLEMENT (arabic) \
+  HB_COMPLEX_SHAPER_IMPLEMENT (hangul) \
   HB_COMPLEX_SHAPER_IMPLEMENT (indic) \
+  HB_COMPLEX_SHAPER_IMPLEMENT (thai) \
   /* ^--- Add new shapers here */
 
 enum hb_ot_complex_shaper_t {
 #define HB_COMPLEX_SHAPER_IMPLEMENT(name) hb_ot_complex_shaper_##name,
   HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
   /* Just here to avoid enum trailing comma: */
   hb_ot_complex_shaper_generic = hb_ot_complex_shaper_default
 #undef HB_COMPLEX_SHAPER_IMPLEMENT
 };
 
 static inline hb_ot_complex_shaper_t
 hb_ot_shape_complex_categorize (const hb_segment_properties_t *props)
 {
-  switch ((int) props->script)
+  switch ((hb_tag_t) props->script)
   {
     default:
       return hb_ot_complex_shaper_default;
 
+
+    /* Unicode-1.1 additions */
     case HB_SCRIPT_ARABIC:
+    case HB_SCRIPT_MONGOLIAN:
+    case HB_SCRIPT_SYRIAC:
+
+    /* Unicode-5.0 additions */
+    case HB_SCRIPT_NKO:
+
+    /* Unicode-6.0 additions */
     case HB_SCRIPT_MANDAIC:
-    case HB_SCRIPT_MONGOLIAN:
-    case HB_SCRIPT_NKO:
-    case HB_SCRIPT_SYRIAC:
+
       return hb_ot_complex_shaper_arabic;
 
+
+    /* Unicode-1.1 additions */
+    case HB_SCRIPT_HANGUL:
+
+      return hb_ot_complex_shaper_hangul;
+
+
+    /* Unicode-1.1 additions */
+    case HB_SCRIPT_THAI:
+    case HB_SCRIPT_LAO:
+
+      return hb_ot_complex_shaper_thai;
+
+
+
+    /* ^--- Add new shapers here */
+
+
 #if 0
     /* Note:
      *
      * These disabled scripts are listed in ucd/IndicSyllabicCategory.txt, but according
-     * to Martin Hosken do not require complex shaping.
+     * to Martin Hosken and Jonathan Kew do not require complex shaping.
+     *
+     * TODO We should automate figuring out which scripts do not need complex shaping
      *
      * TODO We currently keep data for these scripts in our indic table.  Need to fix the
      * generator to not do that.
      */
 
+
     /* Simple? */
+
+    /* Unicode-3.2 additions */
+    case HB_SCRIPT_BUHID:
+    case HB_SCRIPT_HANUNOO:
+
+    /* Unicode-5.1 additions */
+    case HB_SCRIPT_SAURASHTRA:
+
+    /* Unicode-5.2 additions */
+    case HB_SCRIPT_MEETEI_MAYEK:
+
+    /* Unicode-6.0 additions */
     case HB_SCRIPT_BATAK:
     case HB_SCRIPT_BRAHMI:
-    case HB_SCRIPT_HANUNOO:
-    case HB_SCRIPT_MEETEI_MAYEK:
-    case HB_SCRIPT_SAURASHTRA:
+
 
     /* Simple */
-    case HB_SCRIPT_KAYAH_LI:
+
+    /* Unicode-1.1 additions */
+    /* These have their own shaper now. */
     case HB_SCRIPT_LAO:
-    case HB_SCRIPT_LIMBU:
-    case HB_SCRIPT_PHAGS_PA:
-    case HB_SCRIPT_SYLOTI_NAGRI:
+    case HB_SCRIPT_THAI:
+
+    /* Unicode-2.0 additions */
+    case HB_SCRIPT_TIBETAN:
+
+    /* Unicode-3.2 additions */
     case HB_SCRIPT_TAGALOG:
     case HB_SCRIPT_TAGBANWA:
+
+    /* Unicode-4.0 additions */
+    case HB_SCRIPT_LIMBU:
     case HB_SCRIPT_TAI_LE:
+
+    /* Unicode-4.1 additions */
+    case HB_SCRIPT_SYLOTI_NAGRI:
+
+    /* Unicode-5.0 additions */
+    case HB_SCRIPT_PHAGS_PA:
+
+    /* Unicode-5.1 additions */
+    case HB_SCRIPT_KAYAH_LI:
+
+    /* Unicode-5.2 additions */
     case HB_SCRIPT_TAI_VIET:
-    case HB_SCRIPT_THAI:
-    case HB_SCRIPT_TIBETAN:
+
 
     /* May need Indic treatment in the future? */
+
+    /* Unicode-3.0 additions */
     case HB_SCRIPT_MYANMAR:
+
+
 #endif
 
-    case HB_SCRIPT_BALINESE:
+    /* Unicode-1.1 additions */
     case HB_SCRIPT_BENGALI:
-    case HB_SCRIPT_BUGINESE:
-    case HB_SCRIPT_BUHID:
-    case HB_SCRIPT_CHAM:
     case HB_SCRIPT_DEVANAGARI:
     case HB_SCRIPT_GUJARATI:
     case HB_SCRIPT_GURMUKHI:
+    case HB_SCRIPT_KANNADA:
+    case HB_SCRIPT_MALAYALAM:
+    case HB_SCRIPT_ORIYA:
+    case HB_SCRIPT_TAMIL:
+    case HB_SCRIPT_TELUGU:
+
+    /* Unicode-3.0 additions */
+    case HB_SCRIPT_KHMER:
+    case HB_SCRIPT_SINHALA:
+
+    /* Unicode-4.1 additions */
+    case HB_SCRIPT_BUGINESE:
+    case HB_SCRIPT_KHAROSHTHI:
+    case HB_SCRIPT_NEW_TAI_LUE:
+
+    /* Unicode-5.0 additions */
+    case HB_SCRIPT_BALINESE:
+
+    /* Unicode-5.1 additions */
+    case HB_SCRIPT_CHAM:
+    case HB_SCRIPT_LEPCHA:
+    case HB_SCRIPT_REJANG:
+    case HB_SCRIPT_SUNDANESE:
+
+    /* Unicode-5.2 additions */
     case HB_SCRIPT_JAVANESE:
     case HB_SCRIPT_KAITHI:
-    case HB_SCRIPT_KANNADA:
-    case HB_SCRIPT_KHAROSHTHI:
-    case HB_SCRIPT_KHMER:
-    case HB_SCRIPT_LEPCHA:
-    case HB_SCRIPT_MALAYALAM:
-    case HB_SCRIPT_NEW_TAI_LUE:
-    case HB_SCRIPT_ORIYA:
-    case HB_SCRIPT_REJANG:
-    case HB_SCRIPT_SINHALA:
-    case HB_SCRIPT_SUNDANESE:
     case HB_SCRIPT_TAI_THAM:
-    case HB_SCRIPT_TAMIL:
-    case HB_SCRIPT_TELUGU:
+
+    /* Unicode-6.1 additions */
+    case HB_SCRIPT_CHAKMA:
+    case HB_SCRIPT_SHARADA:
+    case HB_SCRIPT_TAKRI:
+
       return hb_ot_complex_shaper_indic;
-
-    /* ^--- Add new shapers here */
   }
 }
 
 
 
 /*
  * collect_features()
  *
  * Called during shape_plan().
  *
@@ skipping 15 matching lines @@
     default:
 #define HB_COMPLEX_SHAPER_IMPLEMENT(name) \
     case hb_ot_complex_shaper_##name:   _hb_ot_shape_complex_collect_features_##name (map, props); return;
     HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
 #undef HB_COMPLEX_SHAPER_IMPLEMENT
   }
 }
 
 
 /*
- * prefer_decomposed()
+ * normalization_preference()
  *
  * Called during shape_execute().
  *
  * Shapers should return TRUE if it prefers decomposed (NFD) input rather than precomposed (NFC).
  */
 
-typedef bool hb_ot_shape_complex_prefer_decomposed_func_t (void);
+typedef hb_ot_shape_normalization_mode_t hb_ot_shape_complex_normalization_preference_func_t (void);
 #define HB_COMPLEX_SHAPER_IMPLEMENT(name) \
-  HB_INTERNAL hb_ot_shape_complex_prefer_decomposed_func_t _hb_ot_shape_complex_prefer_decomposed_##name;
+  HB_INTERNAL hb_ot_shape_complex_normalization_preference_func_t _hb_ot_shape_complex_normalization_preference_##name;
   HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
 #undef HB_COMPLEX_SHAPER_IMPLEMENT
 
-static inline bool
-hb_ot_shape_complex_prefer_decomposed (hb_ot_complex_shaper_t shaper)
+static inline hb_ot_shape_normalization_mode_t
+hb_ot_shape_complex_normalization_preference (hb_ot_complex_shaper_t shaper)
 {
   switch (shaper) {
     default:
 #define HB_COMPLEX_SHAPER_IMPLEMENT(name) \
-    case hb_ot_complex_shaper_##name:   return _hb_ot_shape_complex_prefer_decomposed_##name ();
+    case hb_ot_complex_shaper_##name:   return _hb_ot_shape_complex_normalization_preference_##name ();
     HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
 #undef HB_COMPLEX_SHAPER_IMPLEMENT
   }
 }
 
 
 /* setup_masks()
  *
  * Called during shape_execute().
  *
  * Shapers should use map to get feature masks and set on buffer.
  */
 
-typedef void hb_ot_shape_complex_setup_masks_func_t (hb_ot_map_t *map, hb_buffer_t *buffer);
+typedef void hb_ot_shape_complex_setup_masks_func_t (hb_ot_map_t *map, hb_buffer_t *buffer, hb_font_t *font);
 #define HB_COMPLEX_SHAPER_IMPLEMENT(name) \
   HB_INTERNAL hb_ot_shape_complex_setup_masks_func_t _hb_ot_shape_complex_setup_masks_##name;
   HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
 #undef HB_COMPLEX_SHAPER_IMPLEMENT
 
 static inline void
 hb_ot_shape_complex_setup_masks (hb_ot_complex_shaper_t shaper,
                                  hb_ot_map_t *map,
-                                 hb_buffer_t *buffer)
+                                 hb_buffer_t *buffer,
+                                 hb_font_t *font)
 {
   switch (shaper) {
     default:
 #define HB_COMPLEX_SHAPER_IMPLEMENT(name) \
-    case hb_ot_complex_shaper_##name:   _hb_ot_shape_complex_setup_masks_##name (map, buffer); return;
+    case hb_ot_complex_shaper_##name:   _hb_ot_shape_complex_setup_masks_##name (map, buffer, font); return;
     HB_COMPLEX_SHAPERS_IMPLEMENT_SHAPERS
 #undef HB_COMPLEX_SHAPER_IMPLEMENT
   }
 }
 
 
 
 #endif /* HB_OT_SHAPE_COMPLEX_PRIVATE_HH */