diff options
Diffstat (limited to 'pango2/emoji_presentation_scanner.c')
| -rw-r--r-- | pango2/emoji_presentation_scanner.c | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/pango2/emoji_presentation_scanner.c b/pango2/emoji_presentation_scanner.c new file mode 100644 index 00000000..e40b9d45 --- /dev/null +++ b/pango2/emoji_presentation_scanner.c @@ -0,0 +1,280 @@ + +#line 1 "emoji_presentation_scanner.rl" +// Copyright 2018 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + + +#line 9 "emoji_presentation_scanner.c" +static const char _emoji_presentation_actions[] = { + 0, 1, 0, 1, 1, 1, 5, 1, + 6, 1, 7, 1, 8, 1, 9, 1, + 10, 1, 11, 2, 2, 3, 2, 2, + 4 +}; + +static const char _emoji_presentation_key_offsets[] = { + 0, 5, 7, 14, 18, 20, 21, 24, + 29, 30, 34, 36 +}; + +static const unsigned char _emoji_presentation_trans_keys[] = { + 3u, 7u, 13u, 0u, 2u, 14u, 15u, 2u, + 3u, 6u, 7u, 13u, 0u, 1u, 9u, 10u, + 11u, 12u, 10u, 12u, 10u, 4u, 10u, 12u, + 4u, 9u, 10u, 11u, 12u, 6u, 9u, 10u, + 11u, 12u, 8u, 10u, 9u, 10u, 11u, 12u, + 14u, 0 +}; + +static const char _emoji_presentation_single_lengths[] = { + 3, 2, 5, 4, 2, 1, 3, 5, + 1, 4, 2, 5 +}; + +static const char _emoji_presentation_range_lengths[] = { + 1, 0, 1, 0, 0, 0, 0, 0, + 0, 0, 0, 0 +}; + +static const char _emoji_presentation_index_offsets[] = { + 0, 5, 8, 15, 20, 23, 25, 29, + 35, 37, 42, 45 +}; + +static const char _emoji_presentation_indicies[] = { + 2, 1, 1, 1, 0, 4, 5, 3, + 7, 8, 10, 11, 12, 6, 9, 5, + 13, 14, 15, 0, 13, 15, 16, 13, + 16, 15, 13, 15, 16, 15, 5, 13, + 14, 15, 16, 5, 17, 5, 13, 14, + 18, 17, 5, 13, 16, 5, 13, 14, + 15, 4, 16, 0 +}; + +static const char _emoji_presentation_trans_targs[] = { + 2, 4, 6, 2, 1, 2, 3, 3, + 7, 2, 8, 9, 11, 0, 2, 5, + 2, 2, 10 +}; + +static const char _emoji_presentation_trans_actions[] = { + 17, 19, 19, 15, 0, 7, 22, 19, + 19, 9, 0, 22, 19, 0, 5, 19, + 11, 13, 19 +}; + +static const char _emoji_presentation_to_state_actions[] = { + 0, 0, 1, 0, 0, 0, 0, 0, + 0, 0, 0, 0 +}; + +static const char _emoji_presentation_from_state_actions[] = { + 0, 0, 3, 0, 0, 0, 0, 0, + 0, 0, 0, 0 +}; + +static const char _emoji_presentation_eof_trans[] = { + 1, 4, 0, 1, 17, 17, 17, 17, + 18, 18, 17, 17 +}; + +static const int emoji_presentation_start = 2; + +static const int emoji_presentation_en_text_and_emoji_run = 2; + + +#line 9 "emoji_presentation_scanner.rl" + + + +#line 78 "emoji_presentation_scanner.rl" + + +static emoji_text_iter_t +scan_emoji_presentation (emoji_text_iter_t p, + const emoji_text_iter_t pe, + bool* is_emoji) +{ + emoji_text_iter_t te; + const emoji_text_iter_t eof = pe; + + unsigned act; + int cs; + + +#line 107 "emoji_presentation_scanner.c" + { + cs = emoji_presentation_start; + te = 0; + act = 0; + } + +#line 115 "emoji_presentation_scanner.c" + { + int _klen; + unsigned int _trans; + const char *_acts; + unsigned int _nacts; + const unsigned char *_keys; + + if ( p == pe ) + goto _test_eof; +_resume: + _acts = _emoji_presentation_actions + _emoji_presentation_from_state_actions[cs]; + _nacts = (unsigned int) *_acts++; + while ( _nacts-- > 0 ) { + switch ( *_acts++ ) { + case 1: +#line 1 "NONE" + break; +#line 134 "emoji_presentation_scanner.c" + } + } + + _keys = _emoji_presentation_trans_keys + _emoji_presentation_key_offsets[cs]; + _trans = _emoji_presentation_index_offsets[cs]; + + _klen = _emoji_presentation_single_lengths[cs]; + if ( _klen > 0 ) { + const unsigned char *_lower = _keys; + const unsigned char *_mid; + const unsigned char *_upper = _keys + _klen - 1; + while (1) { + if ( _upper < _lower ) + break; + + _mid = _lower + ((_upper-_lower) >> 1); + if ( (*p) < *_mid ) + _upper = _mid - 1; + else if ( (*p) > *_mid ) + _lower = _mid + 1; + else { + _trans += (unsigned int)(_mid - _keys); + goto _match; + } + } + _keys += _klen; + _trans += _klen; + } + + _klen = _emoji_presentation_range_lengths[cs]; + if ( _klen > 0 ) { + const unsigned char *_lower = _keys; + const unsigned char *_mid; + const unsigned char *_upper = _keys + (_klen<<1) - 2; + while (1) { + if ( _upper < _lower ) + break; + + _mid = _lower + (((_upper-_lower) >> 1) & ~1); + if ( (*p) < _mid[0] ) + _upper = _mid - 2; + else if ( (*p) > _mid[1] ) + _lower = _mid + 2; + else { + _trans += (unsigned int)((_mid - _keys)>>1); + goto _match; + } + } + _trans += _klen; + } + +_match: + _trans = _emoji_presentation_indicies[_trans]; +_eof_trans: + cs = _emoji_presentation_trans_targs[_trans]; + + if ( _emoji_presentation_trans_actions[_trans] == 0 ) + goto _again; + + _acts = _emoji_presentation_actions + _emoji_presentation_trans_actions[_trans]; + _nacts = (unsigned int) *_acts++; + while ( _nacts-- > 0 ) + { + switch ( *_acts++ ) + { + case 2: +#line 1 "NONE" + {te = p+1;} + break; + case 3: +#line 74 "emoji_presentation_scanner.rl" + {act = 2;} + break; + case 4: +#line 75 "emoji_presentation_scanner.rl" + {act = 3;} + break; + case 5: +#line 73 "emoji_presentation_scanner.rl" + {te = p+1;{ *is_emoji = false; return te; }} + break; + case 6: +#line 74 "emoji_presentation_scanner.rl" + {te = p+1;{ *is_emoji = true; return te; }} + break; + case 7: +#line 75 "emoji_presentation_scanner.rl" + {te = p+1;{ *is_emoji = false; return te; }} + break; + case 8: +#line 74 "emoji_presentation_scanner.rl" + {te = p;p--;{ *is_emoji = true; return te; }} + break; + case 9: +#line 75 "emoji_presentation_scanner.rl" + {te = p;p--;{ *is_emoji = false; return te; }} + break; + case 10: +#line 74 "emoji_presentation_scanner.rl" + {{p = ((te))-1;}{ *is_emoji = true; return te; }} + break; + case 11: +#line 1 "NONE" + { switch( act ) { + case 2: + {{p = ((te))-1;} *is_emoji = true; return te; } + break; + case 3: + {{p = ((te))-1;} *is_emoji = false; return te; } + break; + } + } + break; +#line 248 "emoji_presentation_scanner.c" + } + } + +_again: + _acts = _emoji_presentation_actions + _emoji_presentation_to_state_actions[cs]; + _nacts = (unsigned int) *_acts++; + while ( _nacts-- > 0 ) { + switch ( *_acts++ ) { + case 0: +#line 1 "NONE" + break; +#line 261 "emoji_presentation_scanner.c" + } + } + + if ( ++p != pe ) + goto _resume; + _test_eof: {} + if ( p == eof ) + { + if ( _emoji_presentation_eof_trans[cs] > 0 ) { + _trans = _emoji_presentation_eof_trans[cs] - 1; + goto _eof_trans; + } + } + + } + +#line 94 "emoji_presentation_scanner.rl" + + + /* Should not be reached. */ + *is_emoji = false; + return pe; +} |