1// © 2016 and later: Unicode, Inc. and others.
2// License & terms of use: http://www.unicode.org/copyright.html
3//
4//  regexst.h
5//
6//  Copyright (C) 2003-2010, International Business Machines Corporation and others.
7//  All Rights Reserved.
8//
9//  This file contains declarations for the class RegexStaticSets
10//
11//  This class is internal to the regular expression implementation.
12//  For the public Regular Expression API, see the file "unicode/regex.h"
13//
14//  RegexStaticSets groups together the common UnicodeSets that are needed
15//   for compiling or executing RegularExpressions.  This grouping simplifies
16//   the thread safe lazy creation and sharing of these sets across
17//   all instances of regular expressions.
18//
19
20#ifndef REGEXST_H
21#define REGEXST_H
22
23#include "unicode/utypes.h"
24#include "unicode/utext.h"
25#if !UCONFIG_NO_REGULAR_EXPRESSIONS
26
27#include "regeximp.h"
28
29U_NAMESPACE_BEGIN
30
31class  UnicodeSet;
32
33
34class RegexStaticSets : public UMemory {
35public:
36    static RegexStaticSets *gStaticSets;  // Ptr to all lazily initialized constant
37                                          //   shared sets.
38
39    RegexStaticSets(UErrorCode *status);
40    ~RegexStaticSets();
41    static void    initGlobals(UErrorCode *status);
42    static UBool   cleanup();
43
44    UnicodeSet    *fPropSets[URX_LAST_SET];     // The sets for common regex items, e.g. \s
45    Regex8BitSet   fPropSets8[URX_LAST_SET];    // Fast bitmap sets for latin-1 range for above.
46
47    UnicodeSet    fRuleSets[10];               // Sets used while parsing regexp patterns.
48    UnicodeSet    fUnescapeCharSet;            // Set of chars handled by unescape when
49                                               //   encountered with a \ in a pattern.
50    UnicodeSet    *fRuleDigitsAlias;
51    UText         *fEmptyText;                 // An empty string, to be used when a matcher
52                                               //   is created with no input.
53
54};
55
56
57U_NAMESPACE_END
58#endif   // !UCONFIG_NO_REGULAR_EXPRESSIONS
59#endif   // REGEXST_H
60
61