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comparison: intl/icu/source/common/ubidi_props.h
intl/icu/source/common/ubidi_props.h
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- TOR_BUG_9701
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| -1:000000000000 | 0:a2061a316bbd |
|---|---|
| 1 /* | |
| 2 ******************************************************************************* | |
| 3 * | |
| 4 * Copyright (C) 2004-2013, International Business Machines | |
| 5 * Corporation and others. All Rights Reserved. | |
| 6 * | |
| 7 ******************************************************************************* | |
| 8 * file name: ubidi_props.h | |
| 9 * encoding: US-ASCII | |
| 10 * tab size: 8 (not used) | |
| 11 * indentation:4 | |
| 12 * | |
| 13 * created on: 2004dec30 | |
| 14 * created by: Markus W. Scherer | |
| 15 * | |
| 16 * Low-level Unicode bidi/shaping properties access. | |
| 17 */ | |
| 18 | |
| 19 #ifndef __UBIDI_PROPS_H__ | |
| 20 #define __UBIDI_PROPS_H__ | |
| 21 | |
| 22 #include "unicode/utypes.h" | |
| 23 #include "unicode/uset.h" | |
| 24 #include "putilimp.h" | |
| 25 #include "uset_imp.h" | |
| 26 #include "udataswp.h" | |
| 27 | |
| 28 U_CDECL_BEGIN | |
| 29 | |
| 30 /* library API -------------------------------------------------------------- */ | |
| 31 | |
| 32 struct UBiDiProps; | |
| 33 typedef struct UBiDiProps UBiDiProps; | |
| 34 | |
| 35 U_CFUNC const UBiDiProps * | |
| 36 ubidi_getSingleton(void); | |
| 37 | |
| 38 U_CFUNC void | |
| 39 ubidi_addPropertyStarts(const UBiDiProps *bdp, const USetAdder *sa, UErrorCode *pErrorCode); | |
| 40 | |
| 41 /* property access functions */ | |
| 42 | |
| 43 U_CFUNC int32_t | |
| 44 ubidi_getMaxValue(const UBiDiProps *bdp, UProperty which); | |
| 45 | |
| 46 U_CAPI UCharDirection | |
| 47 ubidi_getClass(const UBiDiProps *bdp, UChar32 c); | |
| 48 | |
| 49 U_CFUNC UBool | |
| 50 ubidi_isMirrored(const UBiDiProps *bdp, UChar32 c); | |
| 51 | |
| 52 U_CFUNC UChar32 | |
| 53 ubidi_getMirror(const UBiDiProps *bdp, UChar32 c); | |
| 54 | |
| 55 U_CFUNC UBool | |
| 56 ubidi_isBidiControl(const UBiDiProps *bdp, UChar32 c); | |
| 57 | |
| 58 U_CFUNC UBool | |
| 59 ubidi_isJoinControl(const UBiDiProps *bdp, UChar32 c); | |
| 60 | |
| 61 U_CFUNC UJoiningType | |
| 62 ubidi_getJoiningType(const UBiDiProps *bdp, UChar32 c); | |
| 63 | |
| 64 U_CFUNC UJoiningGroup | |
| 65 ubidi_getJoiningGroup(const UBiDiProps *bdp, UChar32 c); | |
| 66 | |
| 67 U_CFUNC UBidiPairedBracketType | |
| 68 ubidi_getPairedBracketType(const UBiDiProps *bdp, UChar32 c); | |
| 69 | |
| 70 U_CFUNC UChar32 | |
| 71 ubidi_getPairedBracket(const UBiDiProps *bdp, UChar32 c); | |
| 72 | |
| 73 /* file definitions --------------------------------------------------------- */ | |
| 74 | |
| 75 #define UBIDI_DATA_NAME "ubidi" | |
| 76 #define UBIDI_DATA_TYPE "icu" | |
| 77 | |
| 78 /* format "BiDi" */ | |
| 79 #define UBIDI_FMT_0 0x42 | |
| 80 #define UBIDI_FMT_1 0x69 | |
| 81 #define UBIDI_FMT_2 0x44 | |
| 82 #define UBIDI_FMT_3 0x69 | |
| 83 | |
| 84 /* indexes into indexes[] */ | |
| 85 enum { | |
| 86 UBIDI_IX_INDEX_TOP, | |
| 87 UBIDI_IX_LENGTH, | |
| 88 UBIDI_IX_TRIE_SIZE, | |
| 89 UBIDI_IX_MIRROR_LENGTH, | |
| 90 | |
| 91 UBIDI_IX_JG_START, | |
| 92 UBIDI_IX_JG_LIMIT, | |
| 93 | |
| 94 UBIDI_MAX_VALUES_INDEX=15, | |
| 95 UBIDI_IX_TOP=16 | |
| 96 }; | |
| 97 | |
| 98 /* definitions for 16-bit bidi/shaping properties word ---------------------- */ | |
| 99 | |
| 100 enum { | |
| 101 /* UBIDI_CLASS_SHIFT=0, */ /* bidi class: 5 bits (4..0) */ | |
| 102 UBIDI_JT_SHIFT=5, /* joining type: 3 bits (7..5) */ | |
| 103 | |
| 104 UBIDI_BPT_SHIFT=8, /* Bidi_Paired_Bracket_Type(bpt): 2 bits (9..8) */ | |
| 105 | |
| 106 UBIDI_JOIN_CONTROL_SHIFT=10, | |
| 107 UBIDI_BIDI_CONTROL_SHIFT=11, | |
| 108 | |
| 109 UBIDI_IS_MIRRORED_SHIFT=12, /* 'is mirrored' */ | |
| 110 UBIDI_MIRROR_DELTA_SHIFT=13, /* bidi mirroring delta: 3 bits (15..13) */ | |
| 111 | |
| 112 UBIDI_MAX_JG_SHIFT=16 /* max JG value in indexes[UBIDI_MAX_VALUES_INDEX] bits 23..16 */ | |
| 113 }; | |
| 114 | |
| 115 #define UBIDI_CLASS_MASK 0x0000001f | |
| 116 #define UBIDI_JT_MASK 0x000000e0 | |
| 117 #define UBIDI_BPT_MASK 0x00000300 | |
| 118 | |
| 119 #define UBIDI_MAX_JG_MASK 0x00ff0000 | |
| 120 | |
| 121 #define UBIDI_GET_CLASS(props) ((props)&UBIDI_CLASS_MASK) | |
| 122 #define UBIDI_GET_FLAG(props, shift) (((props)>>(shift))&1) | |
| 123 | |
| 124 #if U_SIGNED_RIGHT_SHIFT_IS_ARITHMETIC | |
| 125 # define UBIDI_GET_MIRROR_DELTA(props) ((int16_t)(props)>>UBIDI_MIRROR_DELTA_SHIFT) | |
| 126 #else | |
| 127 # define UBIDI_GET_MIRROR_DELTA(props) (int16_t)(((props)&0x8000) ? (((props)>>UBIDI_MIRROR_DELTA_SHIFT)|0xe000) : ((props)>>UBIDI_MIRROR_DELTA_SHIFT)) | |
| 128 #endif | |
| 129 | |
| 130 enum { | |
| 131 UBIDI_ESC_MIRROR_DELTA=-4, | |
| 132 UBIDI_MIN_MIRROR_DELTA=-3, | |
| 133 UBIDI_MAX_MIRROR_DELTA=3 | |
| 134 }; | |
| 135 | |
| 136 /* definitions for 32-bit mirror table entry -------------------------------- */ | |
| 137 | |
| 138 enum { | |
| 139 /* the source Unicode code point takes 21 bits (20..0) */ | |
| 140 UBIDI_MIRROR_INDEX_SHIFT=21, | |
| 141 UBIDI_MAX_MIRROR_INDEX=0x7ff | |
| 142 }; | |
| 143 | |
| 144 #define UBIDI_GET_MIRROR_CODE_POINT(m) (UChar32)((m)&0x1fffff) | |
| 145 | |
| 146 #define UBIDI_GET_MIRROR_INDEX(m) ((m)>>UBIDI_MIRROR_INDEX_SHIFT) | |
| 147 | |
| 148 U_CDECL_END | |
| 149 | |
| 150 #endif |
