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/*
* Copyright © 2011,2012 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Behdad Esfahbod
*/
#ifndef HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH
#define HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH
#include "hb-private.hh"
%%{
machine myanmar_syllable_machine;
alphtype unsigned char;
write data;
}%%
%%{
# Same order as enum myanmar_category_t. Not sure how to avoid duplication.
A = 10;
As = 18;
C = 1;
D = 19;
D0 = 20;
DB = 3;
GB = 11;
H = 4;
IV = 2;
MH = 21;
MR = 22;
MW = 23;
MY = 24;
PT = 25;
V = 8;
VAbv = 26;
VBlw = 27;
VPre = 28;
VPst = 29;
VS = 30;
ZWJ = 6;
ZWNJ = 5;
Ra = 16;
P = 31;
j = ZWJ|ZWNJ; # Joiners
k = (Ra As H); # Kinzi
c = C|Ra; # is_consonant
medial_group = MY? MR? MW? MH? As?;
main_vowel_group = VPre* VAbv* VBlw* A* (DB As?)?;
post_vowel_group = VPst MH? As* VAbv* A* (DB As?)?;
pwo_tone_group = PT A* DB? As?;
complex_syllable_tail = As* medial_group main_vowel_group post_vowel_group* pwo_tone_group* V* j?;
syllable_tail = (H | complex_syllable_tail);
consonant_syllable = k? (c|IV|D|GB).VS? (H (c|IV).VS?)* syllable_tail;
punctuation_cluster = P V;
broken_cluster = k? VS? syllable_tail;
other = any;
main := |*
consonant_syllable => { found_syllable (consonant_syllable); };
j => { found_syllable (non_myanmar_cluster); };
punctuation_cluster => { found_syllable (punctuation_cluster); };
broken_cluster => { found_syllable (broken_cluster); };
other => { found_syllable (non_myanmar_cluster); };
*|;
}%%
#define found_syllable(syllable_type) \
HB_STMT_START { \
if (0) fprintf (stderr, "syllable %d..%d %s\n", last, p+1, #syllable_type); \
for (unsigned int i = last; i < p+1; i++) \
info[i].syllable() = (syllable_serial << 4) | syllable_type; \
last = p+1; \
syllable_serial++; \
if (unlikely (syllable_serial == 16)) syllable_serial = 1; \
} HB_STMT_END
static void
find_syllables (hb_buffer_t *buffer)
{
unsigned int p, pe, eof, ts HB_UNUSED, te HB_UNUSED, act HB_UNUSED;
int cs;
hb_glyph_info_t *info = buffer->info;
%%{
write init;
getkey info[p].myanmar_category();
}%%
p = 0;
pe = eof = buffer->len;
unsigned int last = 0;
unsigned int syllable_serial = 1;
%%{
write exec;
}%%
}
#undef found_syllable
#endif /* HB_OT_SHAPE_COMPLEX_MYANMAR_MACHINE_HH */
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