1 /* 2 ******************************************************************************* 3 * Copyright (C) 2013-2014, 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 UBool loadGroups(const CollationData &data, UErrorCode &errorCode); 43 UBool inSameGroup(uint32_t p, uint32_t q) const; 44 45 void resetCEs(); 46 void getCEs(const CollationData &data, UErrorCode &errorCode); 47 UBool getCEsFromCE32(const CollationData &data, UChar32 c, uint32_t ce32, 48 UErrorCode &errorCode); 49 UBool getCEsFromContractionCE32(const CollationData &data, uint32_t ce32, 50 UErrorCode &errorCode); 51 void addContractionEntry(int32_t x, int64_t cce0, int64_t cce1, UErrorCode &errorCode); 52 void addUniqueCE(int64_t ce, UErrorCode &errorCode); 53 uint32_t getMiniCE(int64_t ce) const; 54 UBool encodeUniqueCEs(UErrorCode &errorCode); 55 UBool encodeCharCEs(UErrorCode &errorCode); 56 UBool encodeContractions(UErrorCode &errorCode); 57 uint32_t encodeTwoCEs(int64_t first, int64_t second) const; 58 59 static UBool isContractionCharCE(int64_t ce) { 60 return (uint32_t)(ce >> 32) == Collation::NO_CE_PRIMARY && ce != Collation::NO_CE; 61 } 62 63 static const uint32_t CONTRACTION_FLAG = 0x80000000; 64 65 // temporary "buffer" 66 int64_t ce0, ce1; 67 68 int64_t charCEs[CollationFastLatin::NUM_FAST_CHARS][2]; 69 70 UVector64 contractionCEs; 71 UVector64 uniqueCEs; 72 73 /** One 16-bit mini CE per unique CE. */ 74 uint16_t *miniCEs; 75 76 // These are constant for a given list of CollationData.scripts. 77 uint32_t firstDigitPrimary; 78 uint32_t firstLatinPrimary; 79 uint32_t lastLatinPrimary; 80 // This determines the first normal primary weight which is mapped to 81 // a short mini primary. It must be >=firstDigitPrimary. 82 uint32_t firstShortPrimary; 83 84 UBool shortPrimaryOverflow; 85 86 UnicodeString result; 87 int32_t headerLength; 88 }; 89 90 U_NAMESPACE_END 91 92 #endif // !UCONFIG_NO_COLLATION 93 #endif // __COLLATIONFASTLATINBUILDER_H__ 94
