regexst.h - mozsearch

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// © 2016 and later: Unicode, Inc. and others.

// License & terms of use: http://www.unicode.org/copyright.html

//

//  regexst.h

//

//  Copyright (C) 2003-2010, International Business Machines Corporation and others.

//  All Rights Reserved.

//

//  This file contains declarations for the class RegexStaticSets

//

//  This class is internal to the regular expression implementation.

//  For the public Regular Expression API, see the file "unicode/regex.h"

//

//  RegexStaticSets groups together the common UnicodeSets that are needed

//   for compiling or executing RegularExpressions.  This grouping simplifies

//   the thread safe lazy creation and sharing of these sets across

//   all instances of regular expressions.

//

#ifndef REGEXST_H

#define REGEXST_H

#include "unicode/utypes.h"

#include "unicode/utext.h"

#if !UCONFIG_NO_REGULAR_EXPRESSIONS

#include "regeximp.h"

#include "regexcst.h"

U_NAMESPACE_BEGIN

class  UnicodeSet;

class RegexStaticSets : public UMemory {

public:

    static RegexStaticSets *gStaticSets;  // Ptr to all lazily initialized constant

                                          //   shared sets.

    RegexStaticSets(UErrorCode *status);

    ~RegexStaticSets();

    static void    initGlobals(UErrorCode *status);

    UnicodeSet    fPropSets[URX_LAST_SET] {};      // The sets for common regex items, e.g. \s

    Regex8BitSet  fPropSets8[URX_LAST_SET] {};     // Fast bitmap sets for latin-1 range for above.

    UnicodeSet    fRuleSets[kRuleSet_count] {};    // Sets used while parsing regexp patterns.

    UnicodeSet    fUnescapeCharSet {};             // Set of chars handled by unescape when

                                                   //   encountered with a \ in a pattern.

    UnicodeSet    *fRuleDigitsAlias {};

    UText         *fEmptyText {};                  // An empty string, to be used when a matcher

                                                   //   is created with no input.

};

U_NAMESPACE_END

#endif   // !UCONFIG_NO_REGULAR_EXPRESSIONS

#endif   // REGEXST_H