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.hh" 31 32enum myanmar_syllable_type_t { 33 myanmar_consonant_syllable, 34 myanmar_punctuation_cluster, 35 myanmar_broken_cluster, 36 myanmar_non_myanmar_cluster, 37}; 38 39%%{ 40 machine myanmar_syllable_machine; 41 alphtype unsigned char; 42 write exports; 43 write data; 44}%% 45 46%%{ 47 48export A = 10; 49export As = 18; 50export C = 1; 51export D = 32; 52export D0 = 20; 53export DB = 3; 54export GB = 11; 55export H = 4; 56export IV = 2; 57export MH = 21; 58export MR = 22; 59export MW = 23; 60export MY = 24; 61export PT = 25; 62export V = 8; 63export VAbv = 26; 64export VBlw = 27; 65export VPre = 28; 66export VPst = 29; 67export VS = 30; 68export ZWJ = 6; 69export ZWNJ = 5; 70export Ra = 16; 71export P = 31; 72export CS = 19; 73 74j = ZWJ|ZWNJ; # Joiners 75k = (Ra As H); # Kinzi 76 77c = C|Ra; # is_consonant 78 79medial_group = MY? As? MR? ((MW MH? | MH) As?)?; 80main_vowel_group = (VPre.VS?)* VAbv* VBlw* A* (DB As?)?; 81post_vowel_group = VPst MH? As* VAbv* A* (DB As?)?; 82pwo_tone_group = PT A* DB? As?; 83 84complex_syllable_tail = As* medial_group main_vowel_group post_vowel_group* pwo_tone_group* V* j?; 85syllable_tail = (H (c|IV).VS?)* (H | complex_syllable_tail); 86 87consonant_syllable = (k|CS)? (c|IV|D|GB).VS? syllable_tail; 88punctuation_cluster = P V; 89broken_cluster = k? VS? syllable_tail; 90other = any; 91 92main := |* 93 consonant_syllable => { found_syllable (myanmar_consonant_syllable); }; 94 j => { found_syllable (myanmar_non_myanmar_cluster); }; 95 punctuation_cluster => { found_syllable (myanmar_punctuation_cluster); }; 96 broken_cluster => { found_syllable (myanmar_broken_cluster); }; 97 other => { found_syllable (myanmar_non_myanmar_cluster); }; 98*|; 99 100 101}%% 102 103#define found_syllable(syllable_type) \ 104 HB_STMT_START { \ 105 if (0) fprintf (stderr, "syllable %d..%d %s\n", ts, te, #syllable_type); \ 106 for (unsigned int i = ts; i < te; i++) \ 107 info[i].syllable() = (syllable_serial << 4) | syllable_type; \ 108 syllable_serial++; \ 109 if (unlikely (syllable_serial == 16)) syllable_serial = 1; \ 110 } HB_STMT_END 111 112static void 113find_syllables_myanmar (hb_buffer_t *buffer) 114{ 115 unsigned int p, pe, eof, ts, te, act HB_UNUSED; 116 int cs; 117 hb_glyph_info_t *info = buffer->info; 118 %%{ 119 write init; 120 getkey info[p].myanmar_category(); 121 }%% 122 123 p = 0; 124 pe = eof = buffer->len; 125 126 unsigned int syllable_serial = 1; 127 %%{ 128 write exec; 129 }%% 130} 131 132#undef found_syllable 133 134#endif /* HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH */ 135