2 * Copyright © 2011,2012 Google, Inc.
4 * This is part of HarfBuzz, a text shaping library.
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.
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
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.
24 * Google Author(s): Behdad Esfahbod
27 #ifndef HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH
28 #define HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH
30 #include "hb-private.hh"
33 machine myanmar_syllable_machine;
34 alphtype unsigned char;
40 # Same order as enum myanmar_category_t. Not sure how to avoid duplication.
67 j = ZWJ|ZWNJ; # Joiners
68 k = (Ra As H); # Kinzi
70 c = C|Ra; # is_consonant
72 medial_group = MY? MR? MW? MH? As?;
73 main_vowel_group = (VPre.VS?)* VAbv* VBlw* A* (DB As?)?;
74 post_vowel_group = VPst MH? As* VAbv* A* (DB As?)?;
75 pwo_tone_group = PT A* DB? As?;
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);
80 consonant_syllable = (k|CS)? (c|IV|D|GB).VS? (H (c|IV).VS?)* syllable_tail;
81 punctuation_cluster = P V;
82 broken_cluster = k? VS? syllable_tail;
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); };
96 #define found_syllable(syllable_type) \
98 if (0) fprintf (stderr, "syllable %d..%d %s\n", last, p+1, #syllable_type); \
99 for (unsigned int i = last; i < p+1; i++) \
100 info[i].syllable() = (syllable_serial << 4) | syllable_type; \
103 if (unlikely (syllable_serial == 16)) syllable_serial = 1; \
107 find_syllables (hb_buffer_t *buffer)
109 unsigned int p, pe, eof, ts HB_UNUSED, te HB_UNUSED, act HB_UNUSED;
111 hb_glyph_info_t *info = buffer->info;
114 getkey info[p].myanmar_category();
118 pe = eof = buffer->len;
120 unsigned int last = 0;
121 unsigned int syllable_serial = 1;
127 #undef found_syllable
129 #endif /* HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH */