Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2011,2012 Google, Inc. |
| 3 | * |
| 4 | * This is part of HarfBuzz, a text shaping library. |
| 5 | * |
| 6 | * Permission is hereby granted, without written agreement and without |
| 7 | * license or royalty fees, to use, copy, modify, and distribute this |
| 8 | * software and its documentation for any purpose, provided that the |
| 9 | * above copyright notice and the following two paragraphs appear in |
| 10 | * all copies of this software. |
| 11 | * |
| 12 | * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR |
| 13 | * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES |
| 14 | * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN |
| 15 | * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH |
| 16 | * DAMAGE. |
| 17 | * |
| 18 | * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, |
| 19 | * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 20 | * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS |
| 21 | * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO |
| 22 | * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. |
| 23 | * |
| 24 | * Google Author(s): Behdad Esfahbod |
| 25 | */ |
| 26 | |
| 27 | #ifndef HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH |
| 28 | #define HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH |
| 29 | |
Behdad Esfahbod | c77ae40 | 2018-08-25 22:36:36 -0700 | [diff] [blame] | 30 | #include "hb.hh" |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 31 | |
| 32 | %%{ |
| 33 | machine myanmar_syllable_machine; |
| 34 | alphtype unsigned char; |
| 35 | write data; |
| 36 | }%% |
| 37 | |
| 38 | %%{ |
| 39 | |
| 40 | # Same order as enum myanmar_category_t. Not sure how to avoid duplication. |
| 41 | A = 10; |
| 42 | As = 18; |
| 43 | C = 1; |
Behdad Esfahbod | f559c63 | 2017-10-03 15:20:07 +0200 | [diff] [blame] | 44 | D = 32; |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 45 | D0 = 20; |
| 46 | DB = 3; |
Behdad Esfahbod | 186ece9 | 2014-05-27 17:49:45 -0400 | [diff] [blame] | 47 | GB = 11; |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 48 | H = 4; |
| 49 | IV = 2; |
| 50 | MH = 21; |
| 51 | MR = 22; |
| 52 | MW = 23; |
| 53 | MY = 24; |
| 54 | PT = 25; |
| 55 | V = 8; |
| 56 | VAbv = 26; |
| 57 | VBlw = 27; |
| 58 | VPre = 28; |
| 59 | VPst = 29; |
| 60 | VS = 30; |
| 61 | ZWJ = 6; |
| 62 | ZWNJ = 5; |
| 63 | Ra = 16; |
Behdad Esfahbod | 9174a9d | 2013-11-25 18:10:38 -0500 | [diff] [blame] | 64 | P = 31; |
Behdad Esfahbod | f559c63 | 2017-10-03 15:20:07 +0200 | [diff] [blame] | 65 | CS = 19; |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 66 | |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 67 | j = ZWJ|ZWNJ; # Joiners |
| 68 | k = (Ra As H); # Kinzi |
| 69 | |
| 70 | c = C|Ra; # is_consonant |
| 71 | |
Behdad Esfahbod | 439b058 | 2014-05-14 16:44:39 -0600 | [diff] [blame] | 72 | medial_group = MY? MR? MW? MH? As?; |
David Corbett | ccb0367 | 2018-02-02 12:04:04 -0500 | [diff] [blame] | 73 | main_vowel_group = (VPre.VS?)* VAbv* VBlw* A* (DB As?)?; |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 74 | post_vowel_group = VPst MH? As* VAbv* A* (DB As?)?; |
Behdad Esfahbod | d2da5e0 | 2013-11-25 17:50:07 -0500 | [diff] [blame] | 75 | pwo_tone_group = PT A* DB? As?; |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 76 | |
| 77 | complex_syllable_tail = As* medial_group main_vowel_group post_vowel_group* pwo_tone_group* V* j?; |
| 78 | syllable_tail = (H | complex_syllable_tail); |
| 79 | |
Behdad Esfahbod | f559c63 | 2017-10-03 15:20:07 +0200 | [diff] [blame] | 80 | consonant_syllable = (k|CS)? (c|IV|D|GB).VS? (H (c|IV).VS?)* syllable_tail; |
Behdad Esfahbod | 9174a9d | 2013-11-25 18:10:38 -0500 | [diff] [blame] | 81 | punctuation_cluster = P V; |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 82 | broken_cluster = k? VS? syllable_tail; |
| 83 | other = any; |
| 84 | |
| 85 | main := |* |
| 86 | consonant_syllable => { found_syllable (consonant_syllable); }; |
| 87 | j => { found_syllable (non_myanmar_cluster); }; |
Behdad Esfahbod | 9174a9d | 2013-11-25 18:10:38 -0500 | [diff] [blame] | 88 | punctuation_cluster => { found_syllable (punctuation_cluster); }; |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 89 | broken_cluster => { found_syllable (broken_cluster); }; |
| 90 | other => { found_syllable (non_myanmar_cluster); }; |
| 91 | *|; |
| 92 | |
| 93 | |
| 94 | }%% |
| 95 | |
| 96 | #define found_syllable(syllable_type) \ |
| 97 | HB_STMT_START { \ |
Behdad Esfahbod | 40d5d19 | 2018-10-02 17:04:05 +0200 | [diff] [blame] | 98 | if (0) fprintf (stderr, "syllable %d..%d %s\n", ts, te, #syllable_type); \ |
| 99 | for (unsigned int i = ts; i < te; i++) \ |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 100 | info[i].syllable() = (syllable_serial << 4) | syllable_type; \ |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 101 | syllable_serial++; \ |
| 102 | if (unlikely (syllable_serial == 16)) syllable_serial = 1; \ |
| 103 | } HB_STMT_END |
| 104 | |
| 105 | static void |
| 106 | find_syllables (hb_buffer_t *buffer) |
| 107 | { |
Behdad Esfahbod | 40d5d19 | 2018-10-02 17:04:05 +0200 | [diff] [blame] | 108 | unsigned int p, pe, eof, ts, te, act HB_UNUSED; |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 109 | int cs; |
| 110 | hb_glyph_info_t *info = buffer->info; |
| 111 | %%{ |
| 112 | write init; |
| 113 | getkey info[p].myanmar_category(); |
| 114 | }%% |
| 115 | |
| 116 | p = 0; |
| 117 | pe = eof = buffer->len; |
| 118 | |
Behdad Esfahbod | 98628ca | 2013-02-11 13:36:23 -0500 | [diff] [blame] | 119 | unsigned int syllable_serial = 1; |
| 120 | %%{ |
| 121 | write exec; |
| 122 | }%% |
| 123 | } |
| 124 | |
| 125 | #undef found_syllable |
| 126 | |
| 127 | #endif /* HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH */ |