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
32 enum myanmar_syllable_type_t {
33 myanmar_consonant_syllable,
34 myanmar_punctuation_cluster,
35 myanmar_broken_cluster,
36 myanmar_non_myanmar_cluster,
40 machine myanmar_syllable_machine;
41 alphtype unsigned char;
75 j = ZWJ|ZWNJ; # Joiners
76 k = (Ra As H); # Kinzi
78 c = C|Ra; # is_consonant
80 medial_group = MY? As? MR? ((MW MH? ML? | MH ML? | ML) As?)?;
81 main_vowel_group = (VPre.VS?)* VAbv* VBlw* A* (DB As?)?;
82 post_vowel_group = VPst MH? ML? As* VAbv* A* (DB As?)?;
83 pwo_tone_group = PT A* DB? As?;
85 complex_syllable_tail = As* medial_group main_vowel_group post_vowel_group* pwo_tone_group* V* j?;
86 syllable_tail = (H (c|IV).VS?)* (H | complex_syllable_tail);
88 consonant_syllable = (k|CS)? (c|IV|D|GB).VS? syllable_tail;
89 punctuation_cluster = P V;
90 broken_cluster = k? VS? syllable_tail;
94 consonant_syllable => { found_syllable (myanmar_consonant_syllable); };
95 j => { found_syllable (myanmar_non_myanmar_cluster); };
96 punctuation_cluster => { found_syllable (myanmar_punctuation_cluster); };
97 broken_cluster => { found_syllable (myanmar_broken_cluster); };
98 other => { found_syllable (myanmar_non_myanmar_cluster); };
104 #define found_syllable(syllable_type) \
106 if (0) fprintf (stderr, "syllable %d..%d %s\n", ts, te, #syllable_type); \
107 for (unsigned int i = ts; i < te; i++) \
108 info[i].syllable() = (syllable_serial << 4) | syllable_type; \
110 if (unlikely (syllable_serial == 16)) syllable_serial = 1; \
114 find_syllables_myanmar (hb_buffer_t *buffer)
116 unsigned int p, pe, eof, ts, te, act HB_UNUSED;
118 hb_glyph_info_t *info = buffer->info;
121 getkey info[p].myanmar_category();
125 pe = eof = buffer->len;
127 unsigned int syllable_serial = 1;
133 #undef found_syllable
135 #endif /* HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH */