63dfd069b3
This should enable using move semantics where possible e.g. in standard containers. According to https://en.cppreference.com/w/cpp/language/move_constructor: To make strong exception guarantee possible, user-defined move constructors should not throw exceptions. For example, std::vector relies on std::move_if_noexcept to choose between move and copy when the elements need to be relocated. Change-Id: I6e1e1cdd5cd430b139ffa2fa7031fb0bb625decb Reviewed-on: https://gerrit.libreoffice.org/77957 Tested-by: Jenkins Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
167 lines
3.7 KiB
C++
167 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <svl/sharedstring.hxx>
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namespace svl {
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SharedString SharedString::getEmptyString()
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{
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// unicode string array for empty string is globally shared in OUString.
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// Let's take advantage of that.
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rtl_uString* pData = nullptr;
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rtl_uString_new(&pData);
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return SharedString(pData, pData);
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}
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SharedString::SharedString() : mpData(nullptr), mpDataIgnoreCase(nullptr) {}
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SharedString::SharedString( rtl_uString* pData, rtl_uString* pDataIgnoreCase ) :
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mpData(pData), mpDataIgnoreCase(pDataIgnoreCase)
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{
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if (mpData)
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rtl_uString_acquire(mpData);
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if (mpDataIgnoreCase)
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rtl_uString_acquire(mpDataIgnoreCase);
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}
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SharedString::SharedString( const OUString& rStr ) : mpData(rStr.pData), mpDataIgnoreCase(nullptr)
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{
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rtl_uString_acquire(mpData);
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}
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SharedString::SharedString( const SharedString& r ) : mpData(r.mpData), mpDataIgnoreCase(r.mpDataIgnoreCase)
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{
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if (mpData)
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rtl_uString_acquire(mpData);
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if (mpDataIgnoreCase)
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rtl_uString_acquire(mpDataIgnoreCase);
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}
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SharedString::SharedString(SharedString&& r) noexcept : mpData(r.mpData), mpDataIgnoreCase(r.mpDataIgnoreCase)
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{
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r.mpData = nullptr;
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r.mpDataIgnoreCase = nullptr;
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}
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SharedString::~SharedString()
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{
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if (mpData)
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rtl_uString_release(mpData);
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if (mpDataIgnoreCase)
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rtl_uString_release(mpDataIgnoreCase);
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}
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SharedString& SharedString::operator= ( const SharedString& r )
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{
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if(this == &r)
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return *this;
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if (mpData)
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rtl_uString_release(mpData);
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if (mpDataIgnoreCase)
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rtl_uString_release(mpDataIgnoreCase);
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mpData = r.mpData;
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mpDataIgnoreCase = r.mpDataIgnoreCase;
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if (mpData)
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rtl_uString_acquire(mpData);
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if (mpDataIgnoreCase)
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rtl_uString_acquire(mpDataIgnoreCase);
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return *this;
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}
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SharedString& SharedString::operator=(SharedString&& r) noexcept
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{
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if (mpData)
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rtl_uString_release(mpData);
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if (mpDataIgnoreCase)
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rtl_uString_release(mpDataIgnoreCase);
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mpData = r.mpData;
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mpDataIgnoreCase = r.mpDataIgnoreCase;
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r.mpData = nullptr;
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r.mpDataIgnoreCase = nullptr;
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return *this;
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}
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bool SharedString::operator== ( const SharedString& r ) const
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{
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// Compare only the original (not case-folded) string.
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if (mpData == r.mpData)
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return true;
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if (mpData)
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{
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if (!r.mpData)
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return false;
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if (mpData->length != r.mpData->length)
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return false;
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return rtl_ustr_reverseCompare_WithLength(mpData->buffer, mpData->length, r.mpData->buffer, r.mpData->length) == 0;
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}
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return !r.mpData;
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}
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bool SharedString::operator!= ( const SharedString& r ) const
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{
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return !operator== (r);
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}
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OUString SharedString::getString() const
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{
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return mpData ? OUString(mpData) : OUString();
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}
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rtl_uString* SharedString::getData()
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{
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return mpData;
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}
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const rtl_uString* SharedString::getData() const
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{
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return mpData;
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}
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rtl_uString* SharedString::getDataIgnoreCase()
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{
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return mpDataIgnoreCase;
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}
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const rtl_uString* SharedString::getDataIgnoreCase() const
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{
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return mpDataIgnoreCase;
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}
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bool SharedString::isValid() const
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{
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return mpData != nullptr;
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}
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bool SharedString::isEmpty() const
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{
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return mpData == nullptr || mpData->length == 0;
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}
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sal_Int32 SharedString::getLength() const
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{
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return mpData ? mpData->length : 0;
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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