The Tor Browser: intl/icu/source/common/ubidi

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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 */

    19 #ifndef __UBIDI_PROPS_H__

    20 #define __UBIDI_PROPS_H__

    22 #include "unicode/utypes.h"

    23 #include "unicode/uset.h"

    24 #include "putilimp.h"

    25 #include "uset_imp.h"

    26 #include "udataswp.h"

    28 U_CDECL_BEGIN

    30 /* library API -------------------------------------------------------------- */

    32 struct UBiDiProps;

    33 typedef struct UBiDiProps UBiDiProps;

    35 U_CFUNC const UBiDiProps *

    36 ubidi_getSingleton(void);

    38 U_CFUNC void

    39 ubidi_addPropertyStarts(const UBiDiProps *bdp, const USetAdder *sa, UErrorCode *pErrorCode);

    41 /* property access functions */

    43 U_CFUNC int32_t

    44 ubidi_getMaxValue(const UBiDiProps *bdp, UProperty which);

    46 U_CAPI UCharDirection

    47 ubidi_getClass(const UBiDiProps *bdp, UChar32 c);

    49 U_CFUNC UBool

    50 ubidi_isMirrored(const UBiDiProps *bdp, UChar32 c);

    52 U_CFUNC UChar32

    53 ubidi_getMirror(const UBiDiProps *bdp, UChar32 c);

    55 U_CFUNC UBool

    56 ubidi_isBidiControl(const UBiDiProps *bdp, UChar32 c);

    58 U_CFUNC UBool

    59 ubidi_isJoinControl(const UBiDiProps *bdp, UChar32 c);

    61 U_CFUNC UJoiningType

    62 ubidi_getJoiningType(const UBiDiProps *bdp, UChar32 c);

    64 U_CFUNC UJoiningGroup

    65 ubidi_getJoiningGroup(const UBiDiProps *bdp, UChar32 c);

    67 U_CFUNC UBidiPairedBracketType

    68 ubidi_getPairedBracketType(const UBiDiProps *bdp, UChar32 c);

    70 U_CFUNC UChar32

    71 ubidi_getPairedBracket(const UBiDiProps *bdp, UChar32 c);

    73 /* file definitions --------------------------------------------------------- */

    75 #define UBIDI_DATA_NAME "ubidi"

    76 #define UBIDI_DATA_TYPE "icu"

    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

    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,

    91     UBIDI_IX_JG_START,

    92     UBIDI_IX_JG_LIMIT,

    94     UBIDI_MAX_VALUES_INDEX=15,

    95     UBIDI_IX_TOP=16

    96 };

    98 /* definitions for 16-bit bidi/shaping properties word ---------------------- */

   100 enum {

   101  /* UBIDI_CLASS_SHIFT=0, */     /* bidi class: 5 bits (4..0) */

   102     UBIDI_JT_SHIFT=5,           /* joining type: 3 bits (7..5) */

   104     UBIDI_BPT_SHIFT=8,          /* Bidi_Paired_Bracket_Type(bpt): 2 bits (9..8) */

   106     UBIDI_JOIN_CONTROL_SHIFT=10,

   107     UBIDI_BIDI_CONTROL_SHIFT=11,

   109     UBIDI_IS_MIRRORED_SHIFT=12,         /* 'is mirrored' */

   110     UBIDI_MIRROR_DELTA_SHIFT=13,        /* bidi mirroring delta: 3 bits (15..13) */

   112     UBIDI_MAX_JG_SHIFT=16               /* max JG value in indexes[UBIDI_MAX_VALUES_INDEX] bits 23..16 */

   113 };

   115 #define UBIDI_CLASS_MASK        0x0000001f

   116 #define UBIDI_JT_MASK           0x000000e0

   117 #define UBIDI_BPT_MASK          0x00000300

   119 #define UBIDI_MAX_JG_MASK       0x00ff0000

   121 #define UBIDI_GET_CLASS(props) ((props)&UBIDI_CLASS_MASK)

   122 #define UBIDI_GET_FLAG(props, shift) (((props)>>(shift))&1)

   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

   130 enum {

   131     UBIDI_ESC_MIRROR_DELTA=-4,

   132     UBIDI_MIN_MIRROR_DELTA=-3,

   133     UBIDI_MAX_MIRROR_DELTA=3

   134 };

   136 /* definitions for 32-bit mirror table entry -------------------------------- */

   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 };

   144 #define UBIDI_GET_MIRROR_CODE_POINT(m) (UChar32)((m)&0x1fffff)

   146 #define UBIDI_GET_MIRROR_INDEX(m) ((m)>>UBIDI_MIRROR_INDEX_SHIFT)

   148 U_CDECL_END

   150 #endif

The Tor Browser / file revision

intl/icu/source/common/ubidi_props.h@6474c204b198

intl/icu/source/common/ubidi_props.h