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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 *   Copyright (C) 2013, International Business Machines
      6 *   Corporation and others.  All Rights Reserved.
      7 **********************************************************************
      8 *
      9 * scriptset.h
     10 *
     11 * created on: 2013 Jan 7
     12 * created by: Andy Heninger
     13 */
     14 
     15 #ifndef __SCRIPTSET_H__
     16 #define __SCRIPTSET_H__
     17 
     18 #include "unicode/utypes.h"
     19 #include "unicode/uobject.h"
     20 #include "unicode/uscript.h"
     21 
     22 #include "uelement.h"
     23 
     24 U_NAMESPACE_BEGIN
     25 
     26 //-------------------------------------------------------------------------------
     27 //
     28 //  ScriptSet - A bit set representing a set of scripts.
     29 //
     30 //              This class was originally used exclusively with script sets appearing
     31 //              as part of the spoof check whole script confusable binary data. Its
     32 //              use has since become more general, but the continued use to wrap
     33 //              prebuilt binary data does constrain the design.
     34 //
     35 //-------------------------------------------------------------------------------
     36 class U_I18N_API ScriptSet: public UMemory {
     37   public:
     38     ScriptSet();
     39     ScriptSet(const ScriptSet &other);
     40     ~ScriptSet();
     41 
     42     UBool operator == (const ScriptSet &other) const;
     43     UBool operator != (const ScriptSet &other) const {return !(*this == other);};
     44     ScriptSet & operator = (const ScriptSet &other);
     45 
     46     UBool      test(UScriptCode script, UErrorCode &status) const;
     47     ScriptSet &Union(const ScriptSet &other);
     48     ScriptSet &set(UScriptCode script, UErrorCode &status);
     49     ScriptSet &reset(UScriptCode script, UErrorCode &status);
     50     ScriptSet &intersect(const ScriptSet &other);
     51     ScriptSet &intersect(UScriptCode script, UErrorCode &status);
     52     UBool      intersects(const ScriptSet &other) const;  // Sets contain at least one script in commmon.
     53     UBool      contains(const ScriptSet &other) const;    // All set bits in other are also set in this.
     54 
     55     ScriptSet &setAll();
     56     ScriptSet &resetAll();
     57     int32_t countMembers() const;
     58     int32_t hashCode() const;
     59     int32_t nextSetBit(int32_t script) const;
     60 
     61     UBool isEmpty() const;
     62 
     63     UnicodeString &displayScripts(UnicodeString &dest) const; // append script names to dest string.
     64     ScriptSet & parseScripts(const UnicodeString &scriptsString, UErrorCode &status);  // Replaces ScriptSet contents.
     65 
     66     // Wraps around UScript::getScriptExtensions() and adds the corresponding scripts to this instance.
     67     void setScriptExtensions(UChar32 codePoint, UErrorCode& status);
     68 
     69   private:
     70     uint32_t  bits[6];
     71 };
     72 
     73 U_NAMESPACE_END
     74 
     75 U_CAPI UBool U_EXPORT2
     76 uhash_compareScriptSet(const UElement key1, const UElement key2);
     77 
     78 U_CAPI int32_t U_EXPORT2
     79 uhash_hashScriptSet(const UElement key);
     80 
     81 U_CAPI void U_EXPORT2
     82 uhash_deleteScriptSet(void *obj);
     83 
     84 #endif // __SCRIPTSET_H__
     85