regexst.h (2046B)
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 #include "regexcst.h" 29 30 U_NAMESPACE_BEGIN 31 32 class UnicodeSet; 33 34 35 class RegexStaticSets : public UMemory { 36 public: 37 static RegexStaticSets *gStaticSets; // Ptr to all lazily initialized constant 38 // shared sets. 39 40 RegexStaticSets(UErrorCode *status); 41 ~RegexStaticSets(); 42 static void initGlobals(UErrorCode *status); 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[kRuleSet_count] {}; // 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