icuSources/i18n/regexst.h

   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
  27 U_NAMESPACE_BEGIN
  28
  29 class  UnicodeSet;
  30
  31
  32 class RegexStaticSets : public UMemory {
  33 public:
  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
  55 U_NAMESPACE_END
  56 #endif   // !UCONFIG_NO_REGULAR_EXPRESSIONS
  57 #endif   // REGEXST_H
  58