scriptset.h (3098B)
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 static constexpr int32_t SCRIPT_LIMIT = 224; // multiple of 32! 39 40 ScriptSet(); 41 ScriptSet(const ScriptSet &other); 42 ~ScriptSet(); 43 44 bool operator == (const ScriptSet &other) const; 45 bool operator != (const ScriptSet &other) const {return !(*this == other);} 46 ScriptSet & operator = (const ScriptSet &other); 47 48 UBool test(UScriptCode script, UErrorCode &status) const; 49 ScriptSet &Union(const ScriptSet &other); 50 ScriptSet &set(UScriptCode script, UErrorCode &status); 51 ScriptSet &reset(UScriptCode script, UErrorCode &status); 52 ScriptSet &intersect(const ScriptSet &other); 53 ScriptSet &intersect(UScriptCode script, UErrorCode &status); 54 UBool intersects(const ScriptSet &other) const; // Sets contain at least one script in common. 55 UBool contains(const ScriptSet &other) const; // All set bits in other are also set in this. 56 57 ScriptSet &setAll(); 58 ScriptSet &resetAll(); 59 int32_t countMembers() const; 60 int32_t hashCode() const; 61 int32_t nextSetBit(int32_t script) const; 62 63 UBool isEmpty() const; 64 65 UnicodeString &displayScripts(UnicodeString &dest) const; // append script names to dest string. 66 ScriptSet & parseScripts(const UnicodeString &scriptsString, UErrorCode &status); // Replaces ScriptSet contents. 67 68 // Wraps around UScript::getScriptExtensions() and adds the corresponding scripts to this instance. 69 void setScriptExtensions(UChar32 codePoint, UErrorCode& status); 70 71 private: 72 uint32_t bits[SCRIPT_LIMIT / 32]; 73 }; 74 75 U_NAMESPACE_END 76 77 U_CAPI int32_t U_EXPORT2 78 uhash_compareScriptSet(const UElement key1, const UElement key2); 79 80 U_CAPI int32_t U_EXPORT2 81 uhash_hashScriptSet(const UElement key); 82 83 U_CAPI void U_EXPORT2 84 uhash_deleteScriptSet(void *obj); 85 86 U_CAPI UBool U_EXPORT2 87 uhash_equalsScriptSet(const UElement key1, const UElement key2); 88 89 #endif // __SCRIPTSET_H_