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

   1
   2 #line 1 "hb-ot-shaper-khmer-machine.rl"
   3 /*
   4  * Copyright © 2011,2012  Google, Inc.
   5  *
   6  *  This is part of HarfBuzz, a text shaping library.
   7  *
   8  * Permission is hereby granted, without written agreement and without
   9  * license or royalty fees, to use, copy, modify, and distribute this
  10  * software and its documentation for any purpose, provided that the
  11  * above copyright notice and the following two paragraphs appear in
  12  * all copies of this software.
  13  *
  14  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  15  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  16  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  17  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  18  * DAMAGE.
  19  *
  20  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  21  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  22  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  23  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  24  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  25  *
  26  * Google Author(s): Behdad Esfahbod
  27  */
  28
  29 #ifndef HB_OT_SHAPER_KHMER_MACHINE_HH
  30 #define HB_OT_SHAPER_KHMER_MACHINE_HH
  31
  32 #include "hb.hh"
  33
  34 #include "hb-ot-layout.hh"
  35 #include "hb-ot-shaper-indic.hh"
  36
  37 /* buffer var allocations */
  38 #define khmer_category() ot_shaper_var_u8_category() /* khmer_category_t */
  39
  40 using khmer_category_t = unsigned;
  41
  42 #define K_Cat(Cat) khmer_syllable_machine_ex_##Cat
  43
  44 enum khmer_syllable_type_t {
  45   khmer_consonant_syllable,
  46   khmer_broken_cluster,
  47   khmer_non_khmer_cluster,
  48 };
  49
  50
  51 #line 49 "hb-ot-shaper-khmer-machine.hh"
  52 #define khmer_syllable_machine_ex_C 1u
  53 #define khmer_syllable_machine_ex_DOTTEDCIRCLE 11u
  54 #define khmer_syllable_machine_ex_H 4u
  55 #define khmer_syllable_machine_ex_PLACEHOLDER 10u
  56 #define khmer_syllable_machine_ex_Ra 15u
  57 #define khmer_syllable_machine_ex_Robatic 25u
  58 #define khmer_syllable_machine_ex_V 2u
  59 #define khmer_syllable_machine_ex_VAbv 20u
  60 #define khmer_syllable_machine_ex_VBlw 21u
  61 #define khmer_syllable_machine_ex_VPre 22u
  62 #define khmer_syllable_machine_ex_VPst 23u
  63 #define khmer_syllable_machine_ex_Xgroup 26u
  64 #define khmer_syllable_machine_ex_Ygroup 27u
  65 #define khmer_syllable_machine_ex_ZWJ 6u
  66 #define khmer_syllable_machine_ex_ZWNJ 5u
  67
  68
  69 #line 65 "hb-ot-shaper-khmer-machine.hh"
  70 static const unsigned char _khmer_syllable_machine_trans_keys[] = {
  71         5u, 26u, 5u, 26u, 1u, 15u, 5u, 26u, 5u, 26u, 5u, 26u, 5u, 26u, 5u, 26u,
  72         5u, 26u, 5u, 26u, 5u, 26u, 5u, 26u, 5u, 26u, 1u, 15u, 5u, 26u, 5u, 26u,
  73         5u, 26u, 5u, 26u, 5u, 26u, 5u, 26u, 5u, 26u, 1u, 27u, 4u, 27u, 1u, 15u,
  74         4u, 27u, 4u, 27u, 27u, 27u, 4u, 27u, 4u, 27u, 4u, 27u, 4u, 27u, 4u, 27u,
  75         4u, 27u, 1u, 15u, 4u, 27u, 4u, 27u, 27u, 27u, 4u, 27u, 4u, 27u, 4u, 27u,
  76         4u, 27u, 4u, 27u, 5u, 26u, 0
  77 };
  78
  79 static const char _khmer_syllable_machine_key_spans[] = {
  80         22, 22, 15, 22, 22, 22, 22, 22,
  81         22, 22, 22, 22, 22, 15, 22, 22,
  82         22, 22, 22, 22, 22, 27, 24, 15,
  83         24, 24, 1, 24, 24, 24, 24, 24,
  84         24, 15, 24, 24, 1, 24, 24, 24,
  85         24, 24, 22
  86 };
  87
  88 static const short _khmer_syllable_machine_index_offsets[] = {
  89         0, 23, 46, 62, 85, 108, 131, 154,
  90         177, 200, 223, 246, 269, 292, 308, 331,
  91         354, 377, 400, 423, 446, 469, 497, 522,
  92         538, 563, 588, 590, 615, 640, 665, 690,
  93         715, 740, 756, 781, 806, 808, 833, 858,
  94         883, 908, 933
  95 };
  96
  97 static const char _khmer_syllable_machine_indicies[] = {
  98         1, 1, 0, 0, 0, 0, 0, 0,
  99         0, 0, 0, 0, 0, 0, 0, 2,
 100         0, 0, 0, 0, 3, 4, 0, 1,
 101         1, 0, 0, 0, 0, 0, 0, 0,
 102         0, 0, 0, 0, 0, 0, 0, 0,
 103         0, 0, 0, 0, 4, 0, 5, 5,
 104         0, 0, 0, 0, 0, 0, 0, 0,
 105         0, 0, 0, 0, 5, 0, 1, 1,
 106         0, 0, 0, 0, 0, 0, 0, 0,
 107         0, 0, 0, 0, 0, 2, 0, 0,
 108         0, 0, 0, 4, 0, 6, 6, 0,
 109         0, 0, 0, 0, 0, 0, 0, 0,
 110         0, 0, 0, 0, 0, 0, 0, 0,
 111         0, 0, 2, 0, 7, 7, 0, 0,
 112         0, 0, 0, 0, 0, 0, 0, 0,
 113         0, 0, 0, 0, 0, 0, 0, 0,
 114         0, 8, 0, 9, 9, 0, 0, 0,
 115         0, 0, 0, 0, 0, 0, 0, 0,
 116         0, 0, 2, 0, 0, 0, 0, 0,
 117         10, 0, 9, 9, 0, 0, 0, 0,
 118         0, 0, 0, 0, 0, 0, 0, 0,
 119         0, 0, 0, 0, 0, 0, 0, 10,
 120         0, 11, 11, 0, 0, 0, 0, 0,
 121         0, 0, 0, 0, 0, 0, 0, 0,
 122         2, 0, 0, 0, 0, 0, 12, 0,
 123         11, 11, 0, 0, 0, 0, 0, 0,
 124         0, 0, 0, 0, 0, 0, 0, 0,
 125         0, 0, 0, 0, 0, 12, 0, 1,
 126         1, 0, 0, 0, 0, 0, 0, 0,
 127         0, 0, 0, 0, 0, 0, 2, 0,
 128         0, 0, 0, 13, 4, 0, 15, 15,
 129         14, 14, 14, 14, 14, 14, 14, 14,
 130         14, 14, 14, 14, 14, 16, 14, 14,
 131         14, 14, 17, 18, 14, 15, 15, 19,
 132         19, 19, 19, 19, 19, 19, 19, 19,
 133         19, 19, 19, 19, 19, 19, 19, 19,
 134         19, 19, 18, 19, 20, 20, 14, 14,
 135         14, 14, 14, 14, 14, 14, 14, 14,
 136         14, 14, 20, 14, 15, 15, 14, 14,
 137         14, 14, 14, 14, 14, 14, 14, 14,
 138         14, 14, 14, 16, 14, 14, 14, 14,
 139         14, 18, 14, 21, 21, 14, 14, 14,
 140         14, 14, 14, 14, 14, 14, 14, 14,
 141         14, 14, 14, 14, 14, 14, 14, 14,
 142         16, 14, 22, 22, 14, 14, 14, 14,
 143         14, 14, 14, 14, 14, 14, 14, 14,
 144         14, 14, 14, 14, 14, 14, 14, 23,
 145         14, 24, 24, 14, 14, 14, 14, 14,
 146         14, 14, 14, 14, 14, 14, 14, 14,
 147         16, 14, 14, 14, 14, 14, 25, 14,
 148         24, 24, 14, 14, 14, 14, 14, 14,
 149         14, 14, 14, 14, 14, 14, 14, 14,
 150         14, 14, 14, 14, 14, 25, 14, 26,
 151         26, 14, 14, 14, 14, 14, 14, 14,
 152         14, 14, 14, 14, 14, 14, 16, 14,
 153         14, 14, 14, 14, 27, 14, 26, 26,
 154         14, 14, 14, 14, 14, 14, 14, 14,
 155         14, 14, 14, 14, 14, 14, 14, 14,
 156         14, 14, 14, 27, 14, 29, 29, 28,
 157         30, 31, 31, 28, 28, 28, 13, 13,
 158         28, 28, 28, 29, 28, 28, 28, 28,
 159         16, 25, 27, 23, 28, 17, 18, 20,
 160         28, 33, 34, 34, 32, 32, 32, 32,
 161         32, 32, 32, 32, 32, 32, 32, 32,
 162         32, 2, 10, 12, 8, 32, 13, 4,
 163         5, 32, 35, 35, 32, 32, 32, 32,
 164         32, 32, 32, 32, 32, 32, 32, 32,
 165         35, 32, 33, 36, 36, 32, 32, 32,
 166         32, 32, 32, 32, 32, 32, 32, 32,
 167         32, 32, 2, 10, 12, 8, 32, 3,
 168         4, 5, 32, 37, 38, 38, 32, 32,
 169         32, 32, 32, 32, 32, 32, 32, 32,
 170         32, 32, 32, 2, 10, 12, 8, 32,
 171         32, 4, 5, 32, 5, 32, 37, 6,
 172         6, 32, 32, 32, 32, 32, 32, 32,
 173         32, 32, 32, 32, 32, 32, 32, 32,
 174         32, 8, 32, 32, 2, 5, 32, 37,
 175         7, 7, 32, 32, 32, 32, 32, 32,
 176         32, 32, 32, 32, 32, 32, 32, 32,
 177         32, 32, 32, 32, 32, 8, 5, 32,
 178         37, 39, 39, 32, 32, 32, 32, 32,
 179         32, 32, 32, 32, 32, 32, 32, 32,
 180         2, 32, 32, 8, 32, 32, 10, 5,
 181         32, 37, 40, 40, 32, 32, 32, 32,
 182         32, 32, 32, 32, 32, 32, 32, 32,
 183         32, 2, 10, 32, 8, 32, 32, 12,
 184         5, 32, 33, 38, 38, 32, 32, 32,
 185         32, 32, 32, 32, 32, 32, 32, 32,
 186         32, 32, 2, 10, 12, 8, 32, 32,
 187         4, 5, 32, 33, 38, 38, 32, 32,
 188         32, 32, 32, 32, 32, 32, 32, 32,
 189         32, 32, 32, 2, 10, 12, 8, 32,
 190         3, 4, 5, 32, 42, 42, 41, 41,
 191         41, 41, 41, 41, 41, 41, 41, 41,
 192         41, 41, 42, 41, 30, 43, 43, 41,
 193         41, 41, 41, 41, 41, 41, 41, 41,
 194         41, 41, 41, 41, 16, 25, 27, 23,
 195         41, 17, 18, 20, 41, 44, 45, 45,
 196         41, 41, 41, 41, 41, 41, 41, 41,
 197         41, 41, 41, 41, 41, 16, 25, 27,
 198         23, 41, 41, 18, 20, 41, 20, 41,
 199         44, 21, 21, 41, 41, 41, 41, 41,
 200         41, 41, 41, 41, 41, 41, 41, 41,
 201         41, 41, 41, 23, 41, 41, 16, 20,
 202         41, 44, 22, 22, 41, 41, 41, 41,
 203         41, 41, 41, 41, 41, 41, 41, 41,
 204         41, 41, 41, 41, 41, 41, 41, 23,
 205         20, 41, 44, 46, 46, 41, 41, 41,
 206         41, 41, 41, 41, 41, 41, 41, 41,
 207         41, 41, 16, 41, 41, 23, 41, 41,
 208         25, 20, 41, 44, 47, 47, 41, 41,
 209         41, 41, 41, 41, 41, 41, 41, 41,
 210         41, 41, 41, 16, 25, 41, 23, 41,
 211         41, 27, 20, 41, 30, 45, 45, 41,
 212         41, 41, 41, 41, 41, 41, 41, 41,
 213         41, 41, 41, 41, 16, 25, 27, 23,
 214         41, 41, 18, 20, 41, 15, 15, 48,
 215         48, 48, 48, 48, 48, 48, 48, 48,
 216         48, 48, 48, 48, 16, 48, 48, 48,
 217         48, 48, 18, 48, 0
 218 };
 219
 220 static const char _khmer_syllable_machine_trans_targs[] = {
 221         21, 1, 27, 31, 25, 26, 4, 5,
 222         28, 7, 29, 9, 30, 32, 21, 12,
 223         37, 41, 35, 21, 36, 15, 16, 38,
 224         18, 39, 20, 40, 21, 22, 33, 42,
 225         21, 23, 10, 24, 0, 2, 3, 6,
 226         8, 21, 34, 11, 13, 14, 17, 19,
 227         21
 228 };
 229
 230 static const char _khmer_syllable_machine_trans_actions[] = {
 231         1, 0, 2, 2, 2, 0, 0, 0,
 232         2, 0, 2, 0, 2, 2, 3, 0,
 233         2, 4, 4, 5, 0, 0, 0, 2,
 234         0, 2, 0, 2, 8, 2, 0, 9,
 235         10, 0, 0, 2, 0, 0, 0, 0,
 236         0, 11, 4, 0, 0, 0, 0, 0,
 237         12
 238 };
 239
 240 static const char _khmer_syllable_machine_to_state_actions[] = {
 241         0, 0, 0, 0, 0, 0, 0, 0,
 242         0, 0, 0, 0, 0, 0, 0, 0,
 243         0, 0, 0, 0, 0, 6, 0, 0,
 244         0, 0, 0, 0, 0, 0, 0, 0,
 245         0, 0, 0, 0, 0, 0, 0, 0,
 246         0, 0, 0
 247 };
 248
 249 static const char _khmer_syllable_machine_from_state_actions[] = {
 250         0, 0, 0, 0, 0, 0, 0, 0,
 251         0, 0, 0, 0, 0, 0, 0, 0,
 252         0, 0, 0, 0, 0, 7, 0, 0,
 253         0, 0, 0, 0, 0, 0, 0, 0,
 254         0, 0, 0, 0, 0, 0, 0, 0,
 255         0, 0, 0
 256 };
 257
 258 static const short _khmer_syllable_machine_eof_trans[] = {
 259         1, 1, 1, 1, 1, 1, 1, 1,
 260         1, 1, 1, 15, 20, 15, 15, 15,
 261         15, 15, 15, 15, 15, 0, 33, 33,
 262         33, 33, 33, 33, 33, 33, 33, 33,
 263         33, 42, 42, 42, 42, 42, 42, 42,
 264         42, 42, 49
 265 };
 266
 267 static const int khmer_syllable_machine_start = 21;
 268 static const int khmer_syllable_machine_first_final = 21;
 269 static const int khmer_syllable_machine_error = -1;
 270
 271 static const int khmer_syllable_machine_en_main = 21;
 272
 273
 274 #line 53 "hb-ot-shaper-khmer-machine.rl"
 275
 276
 277
 278 #line 102 "hb-ot-shaper-khmer-machine.rl"
 279
 280
 281 #define found_syllable(syllable_type) \
 282   HB_STMT_START { \
 283     if (0) fprintf (stderr, "syllable %u..%u %s\n", ts, te, #syllable_type); \
 284     for (unsigned int i = ts; i < te; i++) \
 285       info[i].syllable() = (syllable_serial << 4) | syllable_type; \
 286     syllable_serial++; \
 287     if (syllable_serial == 16) syllable_serial = 1; \
 288   } HB_STMT_END
 289
 290 inline void
 291 find_syllables_khmer (hb_buffer_t *buffer)
 292 {
 293   unsigned int p, pe, eof, ts, te, act HB_UNUSED;
 294   int cs;
 295   hb_glyph_info_t *info = buffer->info;
 296
 297 #line 287 "hb-ot-shaper-khmer-machine.hh"
 298         {
 299         cs = khmer_syllable_machine_start;
 300         ts = 0;
 301         te = 0;
 302         act = 0;
 303         }
 304
 305 #line 122 "hb-ot-shaper-khmer-machine.rl"
 306
 307
 308   p = 0;
 309   pe = eof = buffer->len;
 310
 311   unsigned int syllable_serial = 1;
 312
 313 #line 299 "hb-ot-shaper-khmer-machine.hh"
 314         {
 315         int _slen;
 316         int _trans;
 317         const unsigned char *_keys;
 318         const char *_inds;
 319         if ( p == pe )
 320                 goto _test_eof;
 321 _resume:
 322         switch ( _khmer_syllable_machine_from_state_actions[cs] ) {
 323         case 7:
 324 #line 1 "NONE"
 325         {ts = p;}
 326         break;
 327 #line 311 "hb-ot-shaper-khmer-machine.hh"
 328         }
 329
 330         _keys = _khmer_syllable_machine_trans_keys + (cs<<1);
 331         _inds = _khmer_syllable_machine_indicies + _khmer_syllable_machine_index_offsets[cs];
 332
 333         _slen = _khmer_syllable_machine_key_spans[cs];
 334         _trans = _inds[ _slen > 0 && _keys[0] <=( info[p].khmer_category()) &&
 335                 ( info[p].khmer_category()) <= _keys[1] ?
 336                 ( info[p].khmer_category()) - _keys[0] : _slen ];
 337
 338 _eof_trans:
 339         cs = _khmer_syllable_machine_trans_targs[_trans];
 340
 341         if ( _khmer_syllable_machine_trans_actions[_trans] == 0 )
 342                 goto _again;
 343
 344         switch ( _khmer_syllable_machine_trans_actions[_trans] ) {
 345         case 2:
 346 #line 1 "NONE"
 347         {te = p+1;}
 348         break;
 349         case 8:
 350 #line 98 "hb-ot-shaper-khmer-machine.rl"
 351         {te = p+1;{ found_syllable (khmer_non_khmer_cluster); }}
 352         break;
 353         case 10:
 354 #line 96 "hb-ot-shaper-khmer-machine.rl"
 355         {te = p;p--;{ found_syllable (khmer_consonant_syllable); }}
 356         break;
 357         case 11:
 358 #line 97 "hb-ot-shaper-khmer-machine.rl"
 359         {te = p;p--;{ found_syllable (khmer_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }}
 360         break;
 361         case 12:
 362 #line 98 "hb-ot-shaper-khmer-machine.rl"
 363         {te = p;p--;{ found_syllable (khmer_non_khmer_cluster); }}
 364         break;
 365         case 1:
 366 #line 96 "hb-ot-shaper-khmer-machine.rl"
 367         {{p = ((te))-1;}{ found_syllable (khmer_consonant_syllable); }}
 368         break;
 369         case 3:
 370 #line 97 "hb-ot-shaper-khmer-machine.rl"
 371         {{p = ((te))-1;}{ found_syllable (khmer_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }}
 372         break;
 373         case 5:
 374 #line 1 "NONE"
 375         {       switch( act ) {
 376         case 2:
 377         {{p = ((te))-1;} found_syllable (khmer_broken_cluster); buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_BROKEN_SYLLABLE; }
 378         break;
 379         case 3:
 380         {{p = ((te))-1;} found_syllable (khmer_non_khmer_cluster); }
 381         break;
 382         }
 383         }
 384         break;
 385         case 4:
 386 #line 1 "NONE"
 387         {te = p+1;}
 388 #line 97 "hb-ot-shaper-khmer-machine.rl"
 389         {act = 2;}
 390         break;
 391         case 9:
 392 #line 1 "NONE"
 393         {te = p+1;}
 394 #line 98 "hb-ot-shaper-khmer-machine.rl"
 395         {act = 3;}
 396         break;
 397 #line 368 "hb-ot-shaper-khmer-machine.hh"
 398         }
 399
 400 _again:
 401         switch ( _khmer_syllable_machine_to_state_actions[cs] ) {
 402         case 6:
 403 #line 1 "NONE"
 404         {ts = 0;}
 405         break;
 406 #line 375 "hb-ot-shaper-khmer-machine.hh"
 407         }
 408
 409         if ( ++p != pe )
 410                 goto _resume;
 411         _test_eof: {}
 412         if ( p == eof )
 413         {
 414         if ( _khmer_syllable_machine_eof_trans[cs] > 0 ) {
 415                 _trans = _khmer_syllable_machine_eof_trans[cs] - 1;
 416                 goto _eof_trans;
 417         }
 418         }
 419
 420         }
 421
 422 #line 130 "hb-ot-shaper-khmer-machine.rl"
 423
 424 }
 425
 426 #undef found_syllable
 427
 428 #endif /* HB_OT_SHAPER_KHMER_MACHINE_HH */