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 = 11; 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? 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 */ 129