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      1 /*
      2  * Copyright  2015  Mozilla Foundation.
      3  * Copyright  2015  Google, Inc.
      4  *
      5  *  This is part of HarfBuzz, a text shaping library.
      6  *
      7  * Permission is hereby granted, without written agreement and without
      8  * license or royalty fees, to use, copy, modify, and distribute this
      9  * software and its documentation for any purpose, provided that the
     10  * above copyright notice and the following two paragraphs appear in
     11  * all copies of this software.
     12  *
     13  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
     14  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
     15  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
     16  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
     17  * DAMAGE.
     18  *
     19  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
     20  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
     21  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
     22  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
     23  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
     24  *
     25  * Mozilla Author(s): Jonathan Kew
     26  * Google Author(s): Behdad Esfahbod
     27  */
     28 
     29 #ifndef HB_OT_SHAPE_COMPLEX_USE_PRIVATE_HH
     30 #define HB_OT_SHAPE_COMPLEX_USE_PRIVATE_HH
     31 
     32 #include "hb-private.hh"
     33 
     34 
     35 #include "hb-ot-shape-complex-private.hh"
     36 
     37 
     38 #define USE_TABLE_ELEMENT_TYPE uint8_t
     39 
     40 /* Cateories used in the Universal Shaping Engine spec:
     41  * https://www.microsoft.com/typography/OpenTypeDev/USE/intro.htm
     42  */
     43 /* Note: This enum is duplicated in the -machine.rl source file.
     44  * Not sure how to avoid duplication. */
     45 enum use_category_t {
     46   USE_O		= 0,	/* OTHER */
     47 
     48   USE_B		= 1,	/* BASE */
     49   USE_IND	= 3,	/* BASE_IND */
     50   USE_N		= 4,	/* BASE_NUM */
     51   USE_GB	= 5,	/* BASE_OTHER */
     52   USE_CGJ	= 6,	/* CGJ */
     53 //  USE_F		= 7,	/* CONS_FINAL */
     54   USE_FM	= 8,	/* CONS_FINAL_MOD */
     55 //  USE_M		= 9,	/* CONS_MED */
     56 //  USE_CM	= 10,	/* CONS_MOD */
     57   USE_SUB	= 11,	/* CONS_SUB */
     58   USE_H		= 12,	/* HALANT */
     59 
     60   USE_HN	= 13,	/* HALANT_NUM */
     61   USE_ZWNJ	= 14,	/* Zero width non-joiner */
     62   USE_ZWJ	= 15,	/* Zero width joiner */
     63   USE_WJ	= 16,	/* Word joiner */
     64   USE_Rsv	= 17,	/* Reserved characters */
     65   USE_R		= 18,	/* REPHA */
     66   USE_S		= 19,	/* SYM */
     67 //  USE_SM	= 20,	/* SYM_MOD */
     68   USE_VS	= 21,	/* VARIATION_SELECTOR */
     69 //  USE_V	= 36,	/* VOWEL */
     70 //  USE_VM	= 40,	/* VOWEL_MOD */
     71 
     72   USE_FAbv	= 24,	/* CONS_FINAL_ABOVE */
     73   USE_FBlw	= 25,	/* CONS_FINAL_BELOW */
     74   USE_FPst	= 26,	/* CONS_FINAL_POST */
     75   USE_MAbv	= 27,	/* CONS_MED_ABOVE */
     76   USE_MBlw	= 28,	/* CONS_MED_BELOW */
     77   USE_MPst	= 29,	/* CONS_MED_POST */
     78   USE_MPre	= 30,	/* CONS_MED_PRE */
     79   USE_CMAbv	= 31,	/* CONS_MOD_ABOVE */
     80   USE_CMBlw	= 32,	/* CONS_MOD_BELOW */
     81   USE_VAbv	= 33,	/* VOWEL_ABOVE / VOWEL_ABOVE_BELOW / VOWEL_ABOVE_BELOW_POST / VOWEL_ABOVE_POST */
     82   USE_VBlw	= 34,	/* VOWEL_BELOW / VOWEL_BELOW_POST */
     83   USE_VPst	= 35,	/* VOWEL_POST	UIPC = Right */
     84   USE_VPre	= 22,	/* VOWEL_PRE / VOWEL_PRE_ABOVE / VOWEL_PRE_ABOVE_POST / VOWEL_PRE_POST */
     85   USE_VMAbv	= 37,	/* VOWEL_MOD_ABOVE */
     86   USE_VMBlw	= 38,	/* VOWEL_MOD_BELOW */
     87   USE_VMPst	= 39,	/* VOWEL_MOD_POST */
     88   USE_VMPre	= 23,	/* VOWEL_MOD_PRE */
     89   USE_SMAbv	= 41,	/* SYM_MOD_ABOVE */
     90   USE_SMBlw	= 42,	/* SYM_MOD_BELOW */
     91   USE_CS	= 43	/* CONS_WITH_STACKER */
     92 };
     93 
     94 HB_INTERNAL USE_TABLE_ELEMENT_TYPE
     95 hb_use_get_categories (hb_codepoint_t u);
     96 
     97 #endif /* HB_OT_SHAPE_COMPLEX_USE_PRIVATE_HH */
     98