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Diffstat (limited to 'thirdparty/icu4c/common/ubidi_props.h')
-rw-r--r-- | thirdparty/icu4c/common/ubidi_props.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/thirdparty/icu4c/common/ubidi_props.h b/thirdparty/icu4c/common/ubidi_props.h new file mode 100644 index 0000000000..698ee9c52b --- /dev/null +++ b/thirdparty/icu4c/common/ubidi_props.h @@ -0,0 +1,148 @@ +// © 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +******************************************************************************* +* +* Copyright (C) 2004-2014, International Business Machines +* Corporation and others. All Rights Reserved. +* +******************************************************************************* +* file name: ubidi_props.h +* encoding: UTF-8 +* tab size: 8 (not used) +* indentation:4 +* +* created on: 2004dec30 +* created by: Markus W. Scherer +* +* Low-level Unicode bidi/shaping properties access. +*/ + +#ifndef __UBIDI_PROPS_H__ +#define __UBIDI_PROPS_H__ + +#include "unicode/utypes.h" +#include "unicode/uset.h" +#include "putilimp.h" +#include "uset_imp.h" +#include "udataswp.h" + +U_CDECL_BEGIN + +/* library API -------------------------------------------------------------- */ + +U_CFUNC void +ubidi_addPropertyStarts(const USetAdder *sa, UErrorCode *pErrorCode); + +/* property access functions */ + +U_CFUNC int32_t +ubidi_getMaxValue(UProperty which); + +U_CAPI UCharDirection +ubidi_getClass(UChar32 c); + +U_CFUNC UBool +ubidi_isMirrored(UChar32 c); + +U_CFUNC UChar32 +ubidi_getMirror(UChar32 c); + +U_CFUNC UBool +ubidi_isBidiControl(UChar32 c); + +U_CFUNC UBool +ubidi_isJoinControl(UChar32 c); + +U_CFUNC UJoiningType +ubidi_getJoiningType(UChar32 c); + +U_CFUNC UJoiningGroup +ubidi_getJoiningGroup(UChar32 c); + +U_CFUNC UBidiPairedBracketType +ubidi_getPairedBracketType(UChar32 c); + +U_CFUNC UChar32 +ubidi_getPairedBracket(UChar32 c); + +/* file definitions --------------------------------------------------------- */ + +#define UBIDI_DATA_NAME "ubidi" +#define UBIDI_DATA_TYPE "icu" + +/* format "BiDi" */ +#define UBIDI_FMT_0 0x42 +#define UBIDI_FMT_1 0x69 +#define UBIDI_FMT_2 0x44 +#define UBIDI_FMT_3 0x69 + +/* indexes into indexes[] */ +enum { + UBIDI_IX_INDEX_TOP, + UBIDI_IX_LENGTH, + UBIDI_IX_TRIE_SIZE, + UBIDI_IX_MIRROR_LENGTH, + + UBIDI_IX_JG_START, + UBIDI_IX_JG_LIMIT, + UBIDI_IX_JG_START2, /* new in format version 2.2, ICU 54 */ + UBIDI_IX_JG_LIMIT2, + + UBIDI_MAX_VALUES_INDEX=15, + UBIDI_IX_TOP=16 +}; + +/* definitions for 16-bit bidi/shaping properties word ---------------------- */ + +enum { + /* UBIDI_CLASS_SHIFT=0, */ /* bidi class: 5 bits (4..0) */ + UBIDI_JT_SHIFT=5, /* joining type: 3 bits (7..5) */ + + UBIDI_BPT_SHIFT=8, /* Bidi_Paired_Bracket_Type(bpt): 2 bits (9..8) */ + + UBIDI_JOIN_CONTROL_SHIFT=10, + UBIDI_BIDI_CONTROL_SHIFT=11, + + UBIDI_IS_MIRRORED_SHIFT=12, /* 'is mirrored' */ + UBIDI_MIRROR_DELTA_SHIFT=13, /* bidi mirroring delta: 3 bits (15..13) */ + + UBIDI_MAX_JG_SHIFT=16 /* max JG value in indexes[UBIDI_MAX_VALUES_INDEX] bits 23..16 */ +}; + +#define UBIDI_CLASS_MASK 0x0000001f +#define UBIDI_JT_MASK 0x000000e0 +#define UBIDI_BPT_MASK 0x00000300 + +#define UBIDI_MAX_JG_MASK 0x00ff0000 + +#define UBIDI_GET_CLASS(props) ((props)&UBIDI_CLASS_MASK) +#define UBIDI_GET_FLAG(props, shift) (((props)>>(shift))&1) + +#if U_SIGNED_RIGHT_SHIFT_IS_ARITHMETIC +# define UBIDI_GET_MIRROR_DELTA(props) ((int16_t)(props)>>UBIDI_MIRROR_DELTA_SHIFT) +#else +# define UBIDI_GET_MIRROR_DELTA(props) (int16_t)(((props)&0x8000) ? (((props)>>UBIDI_MIRROR_DELTA_SHIFT)|0xe000) : ((props)>>UBIDI_MIRROR_DELTA_SHIFT)) +#endif + +enum { + UBIDI_ESC_MIRROR_DELTA=-4, + UBIDI_MIN_MIRROR_DELTA=-3, + UBIDI_MAX_MIRROR_DELTA=3 +}; + +/* definitions for 32-bit mirror table entry -------------------------------- */ + +enum { + /* the source Unicode code point takes 21 bits (20..0) */ + UBIDI_MIRROR_INDEX_SHIFT=21, + UBIDI_MAX_MIRROR_INDEX=0x7ff +}; + +#define UBIDI_GET_MIRROR_CODE_POINT(m) (UChar32)((m)&0x1fffff) + +#define UBIDI_GET_MIRROR_INDEX(m) ((m)>>UBIDI_MIRROR_INDEX_SHIFT) + +U_CDECL_END + +#endif |