icuSources/i18n/collationfastlatinbuilder.h

   1 /*
   2 *******************************************************************************
   3 * Copyright (C) 2013-2015, International Business Machines
   4 * Corporation and others.  All Rights Reserved.
   5 *******************************************************************************
   6 * collationfastlatinbuilder.h
   7 *
   8 * created on: 2013aug09
   9 * created by: Markus W. Scherer
  10 */
  11
  12 #ifndef __COLLATIONFASTLATINBUILDER_H__
  13 #define __COLLATIONFASTLATINBUILDER_H__
  14
  15 #include "unicode/utypes.h"
  16
  17 #if !UCONFIG_NO_COLLATION
  18
  19 #include "unicode/unistr.h"
  20 #include "unicode/uobject.h"
  21 #include "collation.h"
  22 #include "collationfastlatin.h"
  23 #include "uvectr64.h"
  24
  25 U_NAMESPACE_BEGIN
  26
  27 struct CollationData;
  28
  29 class U_I18N_API CollationFastLatinBuilder : public UObject {
  30 public:
  31     CollationFastLatinBuilder(UErrorCode &errorCode);
  32     ~CollationFastLatinBuilder();
  33
  34     UBool forData(const CollationData &data, UErrorCode &errorCode);
  35
  36     const uint16_t *getTable() const {
  37         return reinterpret_cast<const uint16_t *>(result.getBuffer());
  38     }
  39     int32_t lengthOfTable() const { return result.length(); }
  40
  41 private:
  42     // space, punct, symbol, currency (not digit)
  43     enum { NUM_SPECIAL_GROUPS = UCOL_REORDER_CODE_CURRENCY - UCOL_REORDER_CODE_FIRST + 1 };
  44
  45     UBool loadGroups(const CollationData &data, UErrorCode &errorCode);
  46     UBool inSameGroup(uint32_t p, uint32_t q) const;
  47
  48     void resetCEs();
  49     void getCEs(const CollationData &data, UErrorCode &errorCode);
  50     UBool getCEsFromCE32(const CollationData &data, UChar32 c, uint32_t ce32,
  51                          UErrorCode &errorCode);
  52     UBool getCEsFromContractionCE32(const CollationData &data, uint32_t ce32,
  53                                     UErrorCode &errorCode);
  54     void addContractionEntry(int32_t x, int64_t cce0, int64_t cce1, UErrorCode &errorCode);
  55     void addUniqueCE(int64_t ce, UErrorCode &errorCode);
  56     uint32_t getMiniCE(int64_t ce) const;
  57     UBool encodeUniqueCEs(UErrorCode &errorCode);
  58     UBool encodeCharCEs(UErrorCode &errorCode);
  59     UBool encodeContractions(UErrorCode &errorCode);
  60     uint32_t encodeTwoCEs(int64_t first, int64_t second) const;
  61
  62     static UBool isContractionCharCE(int64_t ce) {
  63         return (uint32_t)(ce >> 32) == Collation::NO_CE_PRIMARY && ce != Collation::NO_CE;
  64     }
  65
  66     static const uint32_t CONTRACTION_FLAG = 0x80000000;
  67
  68     // temporary "buffer"
  69     int64_t ce0, ce1;
  70
  71     int64_t charCEs[CollationFastLatin::NUM_FAST_CHARS][2];
  72
  73     UVector64 contractionCEs;
  74     UVector64 uniqueCEs;
  75
  76     /** One 16-bit mini CE per unique CE. */
  77     uint16_t *miniCEs;
  78
  79     // These are constant for a given root collator.
  80     uint32_t lastSpecialPrimaries[NUM_SPECIAL_GROUPS];
  81     uint32_t firstDigitPrimary;
  82     uint32_t firstLatinPrimary;
  83     uint32_t lastLatinPrimary;
  84     // This determines the first normal primary weight which is mapped to
  85     // a short mini primary. It must be >=firstDigitPrimary.
  86     uint32_t firstShortPrimary;
  87
  88     UBool shortPrimaryOverflow;
  89
  90     UnicodeString result;
  91     int32_t headerLength;
  92 };
  93
  94 U_NAMESPACE_END
  95
  96 #endif  // !UCONFIG_NO_COLLATION
  97 #endif  // __COLLATIONFASTLATINBUILDER_H__