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      1 //  2016 and later: Unicode, Inc. and others.
      2 // License & terms of use: http://www.unicode.org/copyright.html
      3 /*
      4 *******************************************************************************
      5 *
      6 *   Copyright (C) 2009-2014, International Business Machines
      7 *   Corporation and others.  All Rights Reserved.
      8 *
      9 *******************************************************************************
     10 *   file name:  n2builder.h
     11 *   encoding:   UTF-8
     12 *   tab size:   8 (not used)
     13 *   indentation:4
     14 *
     15 *   created on: 2009nov25
     16 *   created by: Markus W. Scherer
     17 */
     18 
     19 #ifndef __N2BUILDER_H__
     20 #define __N2BUILDER_H__
     21 
     22 #include "unicode/utypes.h"
     23 
     24 #if !UCONFIG_NO_NORMALIZATION
     25 
     26 #include "unicode/errorcode.h"
     27 #include "unicode/umutablecptrie.h"
     28 #include "unicode/unistr.h"
     29 #include "normalizer2impl.h"  // for IX_COUNT
     30 #include "toolutil.h"
     31 #include "norms.h"
     32 
     33 U_NAMESPACE_BEGIN
     34 
     35 extern UBool beVerbose, haveCopyright;
     36 
     37 class Normalizer2DataBuilder {
     38 public:
     39     Normalizer2DataBuilder(UErrorCode &errorCode);
     40     ~Normalizer2DataBuilder();
     41 
     42     enum OverrideHandling {
     43         OVERRIDE_NONE,
     44         OVERRIDE_ANY,
     45         OVERRIDE_PREVIOUS
     46     };
     47 
     48     void setOverrideHandling(OverrideHandling oh);
     49 
     50     enum Optimization {
     51         OPTIMIZE_NORMAL,
     52         OPTIMIZE_FAST
     53     };
     54 
     55     void setOptimization(Optimization opt) { optimization=opt; }
     56 
     57     void setCC(UChar32 c, uint8_t cc);
     58     void setOneWayMapping(UChar32 c, const UnicodeString &m);
     59     void setRoundTripMapping(UChar32 c, const UnicodeString &m);
     60     void removeMapping(UChar32 c);
     61 
     62     void setUnicodeVersion(const char *v);
     63 
     64     void writeBinaryFile(const char *filename);
     65     void writeCSourceFile(const char *filename);
     66     void writeDataFile(const char *filename, bool writeRemoved) const;
     67 
     68     static void computeDiff(const Normalizer2DataBuilder &b1,
     69                             const Normalizer2DataBuilder &b2,
     70                             Normalizer2DataBuilder &diff);
     71 
     72 private:
     73     friend class Norm16Writer;
     74 
     75     Normalizer2DataBuilder(const Normalizer2DataBuilder &other) = delete;
     76     Normalizer2DataBuilder &operator=(const Normalizer2DataBuilder &other) = delete;
     77 
     78     Norm *checkNormForMapping(Norm *p, UChar32 c);  // check for permitted overrides
     79 
     80     /**
     81      * A starter character with a mapping does not have a composition boundary after it
     82      * if the character itself combines-forward (which is tested by the caller of this function),
     83      * or it is deleted (mapped to the empty string),
     84      * or its mapping contains no starter,
     85      * or the last starter combines-forward.
     86      */
     87     UBool mappingHasCompBoundaryAfter(const BuilderReorderingBuffer &buffer,
     88                                       Norm::MappingType mappingType) const;
     89     /** Returns TRUE if the mapping by itself recomposes, that is, it is not comp-normalized. */
     90     UBool mappingRecomposes(const BuilderReorderingBuffer &buffer) const;
     91     void postProcess(Norm &norm);
     92 
     93     void setSmallFCD(UChar32 c);
     94     int32_t getMinNoNoDelta() const {
     95         return indexes[Normalizer2Impl::IX_MIN_MAYBE_YES]-
     96             ((2*Normalizer2Impl::MAX_DELTA+1)<<Normalizer2Impl::DELTA_SHIFT);
     97     }
     98     void writeNorm16(UMutableCPTrie *norm16Trie, UChar32 start, UChar32 end, Norm &norm);
     99     void setHangulData(UMutableCPTrie *norm16Trie);
    100     LocalUCPTriePointer processData();
    101 
    102     Norms norms;
    103 
    104     int32_t phase;
    105     OverrideHandling overrideHandling;
    106 
    107     Optimization optimization;
    108 
    109     int32_t indexes[Normalizer2Impl::IX_COUNT];
    110     uint8_t *norm16TrieBytes;
    111     int32_t norm16TrieLength;
    112     UnicodeString extraData;
    113     uint8_t smallFCD[0x100];
    114 
    115     UVersionInfo unicodeVersion;
    116 };
    117 
    118 U_NAMESPACE_END
    119 
    120 #endif // #if !UCONFIG_NO_NORMALIZATION
    121 
    122 #endif  // __N2BUILDER_H__
    123