include/svl/sharedstring.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #ifndef INCLUDED_SVL_SHAREDSTRING_HXX
  11 #define INCLUDED_SVL_SHAREDSTRING_HXX
  12
  13 #include <svl/svldllapi.h>
  14 #include <rtl/ustring.hxx>
  15
  16 #include <utility>
  17
  18 namespace svl {
  19
  20 class SVL_DLLPUBLIC SharedString
  21 {
  22     rtl_uString* mpData = nullptr;
  23     rtl_uString* mpDataIgnoreCase = nullptr;
  24 public:
  25
  26     static const SharedString & getEmptyString();
  27     static const OUString EMPTY_STRING;
  28
  29     SharedString() = default;
  30     SharedString( rtl_uString* pData, rtl_uString* pDataIgnoreCase );
  31     explicit SharedString( const OUString& rStr );
  32     SharedString( const SharedString& r );
  33     SharedString(SharedString&& r) noexcept;
  34     ~SharedString();
  35
  36     SharedString& operator= ( const SharedString& r );
  37     SharedString& operator=(SharedString&& r) noexcept;
  38
  39     bool operator== ( const SharedString& r ) const;
  40     bool operator!= ( const SharedString& r ) const;
  41
  42     const OUString & getString() const;
  43     const OUString & getIgnoreCaseString() const;
  44
  45     rtl_uString* getData();
  46     const rtl_uString* getData() const;
  47
  48     rtl_uString* getDataIgnoreCase();
  49     const rtl_uString* getDataIgnoreCase() const;
  50
  51     bool isValid() const;
  52     bool isEmpty() const;
  53
  54     sal_Int32 getLength() const;
  55 };
  56
  57 inline SharedString::SharedString( rtl_uString* pData, rtl_uString* pDataIgnoreCase ) :
  58     mpData(pData), mpDataIgnoreCase(pDataIgnoreCase)
  59 {
  60     if (mpData)
  61         rtl_uString_acquire(mpData);
  62     if (mpDataIgnoreCase)
  63         rtl_uString_acquire(mpDataIgnoreCase);
  64 }
  65
  66 inline SharedString::SharedString( const OUString& rStr ) : mpData(rStr.pData)
  67 {
  68     rtl_uString_acquire(mpData);
  69 }
  70
  71 inline SharedString::SharedString( const SharedString& r ) : mpData(r.mpData), mpDataIgnoreCase(r.mpDataIgnoreCase)
  72 {
  73     if (mpData)
  74         rtl_uString_acquire(mpData);
  75     if (mpDataIgnoreCase)
  76         rtl_uString_acquire(mpDataIgnoreCase);
  77 }
  78
  79 inline SharedString::SharedString(SharedString&& r) noexcept
  80     : mpData(std::exchange(r.mpData, nullptr))
  81     , mpDataIgnoreCase(std::exchange(r.mpDataIgnoreCase, nullptr))
  82 {
  83 }
  84
  85 inline SharedString::~SharedString()
  86 {
  87     if (mpData)
  88         rtl_uString_release(mpData);
  89     if (mpDataIgnoreCase)
  90         rtl_uString_release(mpDataIgnoreCase);
  91 }
  92
  93 inline SharedString& SharedString::operator=(SharedString&& r) noexcept
  94 {
  95     // Having this inline helps Calc's mdds::multi_type_vector to do some operations
  96     // much faster.
  97     if (mpData)
  98         rtl_uString_release(mpData);
  99     if (mpDataIgnoreCase)
 100         rtl_uString_release(mpDataIgnoreCase);
 101
 102     mpData = std::exchange(r.mpData, nullptr);
 103     mpDataIgnoreCase = std::exchange(r.mpDataIgnoreCase, nullptr);
 104
 105     return *this;
 106 }
 107
 108 inline bool SharedString::operator!= ( const SharedString& r ) const
 109 {
 110     return !operator== (r);
 111 }
 112
 113 inline const OUString & SharedString::getString() const
 114 {
 115     return mpData ? OUString::unacquired(&mpData) : EMPTY_STRING;
 116 }
 117
 118 inline const OUString & SharedString::getIgnoreCaseString() const
 119 {
 120     return mpDataIgnoreCase ? OUString::unacquired(&mpDataIgnoreCase) : EMPTY_STRING;
 121 }
 122
 123 inline rtl_uString* SharedString::getData()
 124 {
 125     return mpData;
 126 }
 127
 128 inline const rtl_uString* SharedString::getData() const
 129 {
 130     return mpData;
 131 }
 132
 133 inline rtl_uString* SharedString::getDataIgnoreCase()
 134 {
 135     return mpDataIgnoreCase;
 136 }
 137
 138 inline const rtl_uString* SharedString::getDataIgnoreCase() const
 139 {
 140     return mpDataIgnoreCase;
 141 }
 142
 143 inline bool SharedString::isValid() const
 144 {
 145     return mpData != nullptr;
 146 }
 147
 148 inline bool SharedString::isEmpty() const
 149 {
 150     return mpData == nullptr || mpData->length == 0;
 151 }
 152
 153 inline sal_Int32 SharedString::getLength() const
 154 {
 155     return mpData ? mpData->length : 0;
 156 }
 157
 158 }
 159
 160 #endif
 161
 162 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */