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 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. 41A = 10; 42As = 18; 43C = 1; 44D = 32; 45D0 = 20; 46DB = 3; 47GB = 11; 48H = 4; 49IV = 2; 50MH = 21; 51MR = 22; 52MW = 23; 53MY = 24; 54PT = 25; 55V = 8; 56VAbv = 26; 57VBlw = 27; 58VPre = 28; 59VPst = 29; 60VS = 30; 61ZWJ = 6; 62ZWNJ = 5; 63Ra = 16; 64P = 31; 65CS = 19; 66 67j = ZWJ|ZWNJ; # Joiners 68k = (Ra As H); # Kinzi 69 70c = C|Ra; # is_consonant 71 72medial_group = MY? MR? MW? MH? As?; 73main_vowel_group = (VPre.VS?)* VAbv* VBlw* A* (DB As?)?; 74post_vowel_group = VPst MH? As* VAbv* A* (DB As?)?; 75pwo_tone_group = PT A* DB? As?; 76 77complex_syllable_tail = As* medial_group main_vowel_group post_vowel_group* pwo_tone_group* V* j?; 78syllable_tail = (H | complex_syllable_tail); 79 80consonant_syllable = (k|CS)? (c|IV|D|GB).VS? (H (c|IV).VS?)* syllable_tail; 81punctuation_cluster = P V; 82broken_cluster = k? VS? syllable_tail; 83other = any; 84 85main := |* 86 consonant_syllable => { found_syllable (consonant_syllable); }; 87 j => { found_syllable (non_myanmar_cluster); }; 88 punctuation_cluster => { found_syllable (punctuation_cluster); }; 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 { \ 98 if (0) fprintf (stderr, "syllable %d..%d %s\n", ts, te, #syllable_type); \ 99 for (unsigned int i = ts; i < te; i++) \ 100 info[i].syllable() = (syllable_serial << 4) | syllable_type; \ 101 syllable_serial++; \ 102 if (unlikely (syllable_serial == 16)) syllable_serial = 1; \ 103 } HB_STMT_END 104 105static void 106find_syllables (hb_buffer_t *buffer) 107{ 108 unsigned int p, pe, eof, ts, te, 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 syllable_serial = 1; 120 %%{ 121 write exec; 122 }%% 123} 124 125#undef found_syllable 126 127#endif /* HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH */ 128