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comparison: gfx/harfbuzz/src/hb-ot-shape-complex-myanmar-machine.rl
gfx/harfbuzz/src/hb-ot-shape-complex-myanmar-machine.rl
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- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
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| -1:000000000000 | 0:51d3082f2fe0 |
|---|---|
| 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 | |
| 30 #include "hb-private.hh" | |
| 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; | |
| 44 D = 19; | |
| 45 D0 = 20; | |
| 46 DB = 3; | |
| 47 GB = 12; | |
| 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; | |
| 64 P = 31; | |
| 65 | |
| 66 j = ZWJ|ZWNJ; # Joiners | |
| 67 k = (Ra As H); # Kinzi | |
| 68 | |
| 69 c = C|Ra; # is_consonant | |
| 70 | |
| 71 medial_group = MY? MR? ((MW MH? | MH) As?)?; | |
| 72 main_vowel_group = VPre* VAbv* VBlw* A* (DB As?)?; | |
| 73 post_vowel_group = VPst MH? As* VAbv* A* (DB As?)?; | |
| 74 pwo_tone_group = PT A* DB? As?; | |
| 75 | |
| 76 complex_syllable_tail = As* medial_group main_vowel_group post_vowel_group* pwo_tone_group* V* j?; | |
| 77 syllable_tail = (H | complex_syllable_tail); | |
| 78 | |
| 79 consonant_syllable = k? (c|IV|D|GB).VS? (H (c|IV).VS?)* syllable_tail; | |
| 80 punctuation_cluster = P V; | |
| 81 broken_cluster = k? VS? syllable_tail; | |
| 82 other = any; | |
| 83 | |
| 84 main := |* | |
| 85 consonant_syllable => { found_syllable (consonant_syllable); }; | |
| 86 j => { found_syllable (non_myanmar_cluster); }; | |
| 87 punctuation_cluster => { found_syllable (punctuation_cluster); }; | |
| 88 broken_cluster => { found_syllable (broken_cluster); }; | |
| 89 other => { found_syllable (non_myanmar_cluster); }; | |
| 90 *|; | |
| 91 | |
| 92 | |
| 93 }%% | |
| 94 | |
| 95 #define found_syllable(syllable_type) \ | |
| 96 HB_STMT_START { \ | |
| 97 if (0) fprintf (stderr, "syllable %d..%d %s\n", last, p+1, #syllable_type); \ | |
| 98 for (unsigned int i = last; i < p+1; i++) \ | |
| 99 info[i].syllable() = (syllable_serial << 4) | syllable_type; \ | |
| 100 last = p+1; \ | |
| 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 { | |
| 108 unsigned int p, pe, eof, ts HB_UNUSED, te HB_UNUSED, act HB_UNUSED; | |
| 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 | |
| 119 unsigned int last = 0; | |
| 120 unsigned int syllable_serial = 1; | |
| 121 %%{ | |
| 122 write exec; | |
| 123 }%% | |
| 124 } | |
| 125 | |
| 126 #undef found_syllable | |
| 127 | |
| 128 #endif /* HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH */ |
