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