icuSources/i18n/regexst.h

   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
  29 U_NAMESPACE_BEGIN
  30
  31 class  UnicodeSet;
  32
  33
  34 class RegexStaticSets : public UMemory {
  35 public:
  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
  57 U_NAMESPACE_END
  58 #endif   // !UCONFIG_NO_REGULAR_EXPRESSIONS
  59 #endif   // REGEXST_H
  60