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05/14/2024 03:54:45 PM
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alphaindex.h
26.52 KB
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appendable.h
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basictz.h
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brkiter.h
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bytestream.h
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bytestrie.h
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bytestriebuilder.h
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calendar.h
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caniter.h
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casemap.h
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char16ptr.h
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chariter.h
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choicfmt.h
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coleitr.h
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coll.h
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compactdecimalformat.h
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curramt.h
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currpinf.h
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currunit.h
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datefmt.h
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dbbi.h
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dcfmtsym.h
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decimfmt.h
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docmain.h
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dtfmtsym.h
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dtintrv.h
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dtitvfmt.h
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dtitvinf.h
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dtptngen.h
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dtrule.h
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edits.h
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enumset.h
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errorcode.h
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fieldpos.h
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filteredbrk.h
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fmtable.h
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format.h
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formattedvalue.h
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fpositer.h
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gender.h
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gregocal.h
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icudataver.h
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icuplug.h
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idna.h
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listformatter.h
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localebuilder.h
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localematcher.h
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localpointer.h
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locdspnm.h
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locid.h
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measfmt.h
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measunit.h
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measure.h
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messagepattern.h
33.71 KB
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msgfmt.h
44.22 KB
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normalizer2.h
33.66 KB
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normlzr.h
30.95 KB
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nounit.h
2.25 KB
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numberformatter.h
94.15 KB
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numberrangeformatter.h
25.19 KB
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numfmt.h
49.84 KB
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numsys.h
7.33 KB
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parseerr.h
3.08 KB
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parsepos.h
5.57 KB
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platform.h
28.09 KB
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plurfmt.h
25.24 KB
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plurrule.h
20.82 KB
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ptypes.h
3.49 KB
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putil.h
6.32 KB
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rbbi.h
28.64 KB
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rbnf.h
48.85 KB
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rbtz.h
15.77 KB
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regex.h
84.36 KB
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region.h
9.18 KB
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reldatefmt.h
22.22 KB
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rep.h
9.37 KB
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resbund.h
18.08 KB
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schriter.h
6.36 KB
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scientificnumberformatter.h
6.43 KB
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search.h
22.22 KB
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selfmt.h
14.34 KB
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simpleformatter.h
12.59 KB
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simpletz.h
45.64 KB
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smpdtfmt.h
71.07 KB
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sortkey.h
11.18 KB
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std_string.h
1.05 KB
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strenum.h
9.92 KB
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stringoptions.h
5.79 KB
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stringpiece.h
10.05 KB
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stringtriebuilder.h
15.47 KB
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stsearch.h
21.41 KB
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symtable.h
4.27 KB
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tblcoll.h
36.92 KB
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timezone.h
43.81 KB
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tmunit.h
3.4 KB
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tmutamt.h
4.91 KB
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tmutfmt.h
7.42 KB
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translit.h
65.82 KB
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tzfmt.h
42.93 KB
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tznames.h
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tzrule.h
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tztrans.h
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ubidi.h
89.61 KB
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ubiditransform.h
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ubrk.h
24.43 KB
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ucal.h
60.68 KB
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ucasemap.h
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ucat.h
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uchar.h
144.64 KB
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ucharstrie.h
22.53 KB
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ucharstriebuilder.h
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uchriter.h
13.42 KB
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uclean.h
11.2 KB
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ucnv.h
83.46 KB
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ucnv_cb.h
6.58 KB
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ucnv_err.h
20.98 KB
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ucnvsel.h
6.19 KB
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ucol.h
61.95 KB
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ucoleitr.h
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uconfig.h
12.07 KB
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ucpmap.h
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ucptrie.h
22.5 KB
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ucsdet.h
14.69 KB
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ucurr.h
16.72 KB
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udat.h
62.4 KB
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udata.h
15.63 KB
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udateintervalformat.h
11.93 KB
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udatpg.h
30.18 KB
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udisplaycontext.h
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uenum.h
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ufieldpositer.h
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uformattable.h
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uformattedvalue.h
12.3 KB
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ugender.h
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uidna.h
33.43 KB
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uiter.h
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uldnames.h
10.48 KB
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ulistformatter.h
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uloc.h
54.63 KB
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ulocdata.h
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umachine.h
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umisc.h
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umsg.h
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umutablecptrie.h
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unifilt.h
4 KB
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unifunct.h
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unimatch.h
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unirepl.h
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uniset.h
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unistr.h
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unorm.h
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unorm2.h
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unounclass.h
735 bytes
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unum.h
55.31 KB
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unumberformatter.h
30.28 KB
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unumberrangeformatter.h
15.37 KB
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unumsys.h
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uobject.h
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upluralrules.h
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uregex.h
71.99 KB
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uregion.h
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ureldatefmt.h
17.04 KB
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urename.h
135 KB
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urep.h
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ures.h
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uscript.h
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usearch.h
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uset.h
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usetiter.h
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ushape.h
18 KB
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uspoof.h
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usprep.h
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ustdio.h
38.56 KB
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ustream.h
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ustring.h
72.36 KB
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ustringtrie.h
3.15 KB
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utext.h
58.08 KB
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utf.h
7.87 KB
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utf16.h
23.35 KB
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utf32.h
763 bytes
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utf8.h
30.83 KB
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utf_old.h
45.83 KB
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utmscale.h
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utrace.h
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utrans.h
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utypes.h
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uvernum.h
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uversion.h
5.99 KB
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vtzone.h
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Editing: usetiter.h
Close
// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ********************************************************************** * Copyright (c) 2002-2014, International Business Machines * Corporation and others. All Rights Reserved. ********************************************************************** */ #ifndef USETITER_H #define USETITER_H #include "unicode/utypes.h" #if U_SHOW_CPLUSPLUS_API #include "unicode/uobject.h" #include "unicode/unistr.h" /** * \file * \brief C++ API: UnicodeSetIterator iterates over the contents of a UnicodeSet. */ U_NAMESPACE_BEGIN class UnicodeSet; class UnicodeString; /** * * UnicodeSetIterator iterates over the contents of a UnicodeSet. It * iterates over either code points or code point ranges. After all * code points or ranges have been returned, it returns the * multicharacter strings of the UnicodeSet, if any. * * This class is not intended for public subclassing. * * <p>To iterate over code points and strings, use a loop like this: * <pre> * UnicodeSetIterator it(set); * while (it.next()) { * processItem(it.getString()); * } * </pre> * <p>Each item in the set is accessed as a string. Set elements * consisting of single code points are returned as strings containing * just the one code point. * * <p>To iterate over code point ranges, instead of individual code points, * use a loop like this: * <pre> * UnicodeSetIterator it(set); * while (it.nextRange()) { * if (it.isString()) { * processString(it.getString()); * } else { * processCodepointRange(it.getCodepoint(), it.getCodepointEnd()); * } * } * </pre> * * To iterate over only the strings, start with <code>skipToStrings()</code>. * * @author M. Davis * @stable ICU 2.4 */ class U_COMMON_API UnicodeSetIterator U_FINAL : public UObject { /** * Value of <tt>codepoint</tt> if the iterator points to a string. * If <tt>codepoint == IS_STRING</tt>, then examine * <tt>string</tt> for the current iteration result. */ enum { IS_STRING = -1 }; /** * Current code point, or the special value <tt>IS_STRING</tt>, if * the iterator points to a string. */ UChar32 codepoint; /** * When iterating over ranges using <tt>nextRange()</tt>, * <tt>codepointEnd</tt> contains the inclusive end of the * iteration range, if <tt>codepoint != IS_STRING</tt>. If * iterating over code points using <tt>next()</tt>, or if * <tt>codepoint == IS_STRING</tt>, then the value of * <tt>codepointEnd</tt> is undefined. */ UChar32 codepointEnd; /** * If <tt>codepoint == IS_STRING</tt>, then <tt>string</tt> points * to the current string. If <tt>codepoint != IS_STRING</tt>, the * value of <tt>string</tt> is undefined. */ const UnicodeString* string; public: /** * Create an iterator over the given set. The iterator is valid * only so long as <tt>set</tt> is valid. * @param set set to iterate over * @stable ICU 2.4 */ UnicodeSetIterator(const UnicodeSet& set); /** * Create an iterator over nothing. <tt>next()</tt> and * <tt>nextRange()</tt> return false. This is a convenience * constructor allowing the target to be set later. * @stable ICU 2.4 */ UnicodeSetIterator(); /** * Destructor. * @stable ICU 2.4 */ virtual ~UnicodeSetIterator(); /** * Returns true if the current element is a string. If so, the * caller can retrieve it with <tt>getString()</tt>. If this * method returns false, the current element is a code point or * code point range, depending on whether <tt>next()</tt> or * <tt>nextRange()</tt> was called. * Elements of types string and codepoint can both be retrieved * with the function <tt>getString()</tt>. * Elements of type codepoint can also be retrieved with * <tt>getCodepoint()</tt>. * For ranges, <tt>getCodepoint()</tt> returns the starting codepoint * of the range, and <tt>getCodepointEnd()</tt> returns the end * of the range. * @stable ICU 2.4 */ inline UBool isString() const; /** * Returns the current code point, if <tt>isString()</tt> returned * false. Otherwise returns an undefined result. * @stable ICU 2.4 */ inline UChar32 getCodepoint() const; /** * Returns the end of the current code point range, if * <tt>isString()</tt> returned false and <tt>nextRange()</tt> was * called. Otherwise returns an undefined result. * @stable ICU 2.4 */ inline UChar32 getCodepointEnd() const; /** * Returns the current string, if <tt>isString()</tt> returned * true. If the current iteration item is a code point, a UnicodeString * containing that single code point is returned. * * Ownership of the returned string remains with the iterator. * The string is guaranteed to remain valid only until the iterator is * advanced to the next item, or until the iterator is deleted. * * @stable ICU 2.4 */ const UnicodeString& getString(); #ifndef U_HIDE_DRAFT_API /** * Skips over the remaining code points/ranges, if any. * A following call to next() or nextRange() will yield a string, if there is one. * No-op if next() would return false, or if it would yield a string anyway. * * @return *this * @draft ICU 70 * @see UnicodeSet#strings() */ inline UnicodeSetIterator &skipToStrings() { // Finish code point/range iteration. range = endRange; endElement = -1; nextElement = 0; return *this; } #endif // U_HIDE_DRAFT_API /** * Advances the iteration position to the next element in the set, * which can be either a single code point or a string. * If there are no more elements in the set, return false. * * <p> * If <tt>isString() == true</tt>, the value is a * string, otherwise the value is a * single code point. Elements of either type can be retrieved * with the function <tt>getString()</tt>, while elements of * consisting of a single code point can be retrieved with * <tt>getCodepoint()</tt> * * <p>The order of iteration is all code points in sorted order, * followed by all strings sorted order. Do not mix * calls to <tt>next()</tt> and <tt>nextRange()</tt> without * calling <tt>reset()</tt> between them. The results of doing so * are undefined. * * @return true if there was another element in the set. * @stable ICU 2.4 */ UBool next(); /** * Returns the next element in the set, either a code point range * or a string. If there are no more elements in the set, return * false. If <tt>isString() == true</tt>, the value is a * string and can be accessed with <tt>getString()</tt>. Otherwise the value is a * range of one or more code points from <tt>getCodepoint()</tt> to * <tt>getCodepointeEnd()</tt> inclusive. * * <p>The order of iteration is all code points ranges in sorted * order, followed by all strings sorted order. Ranges are * disjoint and non-contiguous. The value returned from <tt>getString()</tt> * is undefined unless <tt>isString() == true</tt>. Do not mix calls to * <tt>next()</tt> and <tt>nextRange()</tt> without calling * <tt>reset()</tt> between them. The results of doing so are * undefined. * * @return true if there was another element in the set. * @stable ICU 2.4 */ UBool nextRange(); /** * Sets this iterator to visit the elements of the given set and * resets it to the start of that set. The iterator is valid only * so long as <tt>set</tt> is valid. * @param set the set to iterate over. * @stable ICU 2.4 */ void reset(const UnicodeSet& set); /** * Resets this iterator to the start of the set. * @stable ICU 2.4 */ void reset(); /** * ICU "poor man's RTTI", returns a UClassID for this class. * * @stable ICU 2.4 */ static UClassID U_EXPORT2 getStaticClassID(); /** * ICU "poor man's RTTI", returns a UClassID for the actual class. * * @stable ICU 2.4 */ virtual UClassID getDynamicClassID() const override; // ======================= PRIVATES =========================== private: // endElement and nextElements are really UChar32's, but we keep // them as signed int32_t's so we can do comparisons with // endElement set to -1. Leave them as int32_t's. /** The set */ const UnicodeSet* set; /** End range */ int32_t endRange; /** Range */ int32_t range; /** End element */ int32_t endElement; /** Next element */ int32_t nextElement; /** Next string */ int32_t nextString; /** String count */ int32_t stringCount; /** * Points to the string to use when the caller asks for a * string and the current iteration item is a code point, not a string. */ UnicodeString *cpString; /** Copy constructor. Disallowed. */ UnicodeSetIterator(const UnicodeSetIterator&) = delete; /** Assignment operator. Disallowed. */ UnicodeSetIterator& operator=(const UnicodeSetIterator&) = delete; /** Load range */ void loadRange(int32_t range); }; inline UBool UnicodeSetIterator::isString() const { return codepoint < 0; } inline UChar32 UnicodeSetIterator::getCodepoint() const { return codepoint; } inline UChar32 UnicodeSetIterator::getCodepointEnd() const { return codepointEnd; } U_NAMESPACE_END #endif /* U_SHOW_CPLUSPLUS_API */ #endif