/*

 * 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 */