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intl/icu/source/common/ubidi_props.h@fc2d59ddac77 (annotated)

intl/icu/source/common/ubidi_props.h

Wed, 31 Dec 2014 07:22:50 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 07:22:50 +0100

branch

TOR_BUG_3246

changeset 4

fc2d59ddac77

permissions

-rw-r--r--

Correct previous dual key logic pending first delivery installment.

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