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
24U_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//-------------------------------------------------------------------------------
36class 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
75U_NAMESPACE_END
76
77U_CAPI UBool U_EXPORT2
78uhash_compareScriptSet(const UElement key1, const UElement key2);
79
80U_CAPI int32_t U_EXPORT2
81uhash_hashScriptSet(const UElement key);
82
83U_CAPI void U_EXPORT2
84uhash_deleteScriptSet(void *obj);
85
86U_CAPI UBool U_EXPORT2
87uhash_equalsScriptSet(const UElement key1, const UElement key2);
88
89#endif // __SCRIPTSET_H_
90