Eliminate some unnecessary temporary Date instances

Change-Id: Idede71608458acf4d23504b3a6a1cba557f370d1

5 files changed, 12 insertions, 15 deletions

diff --git a/sc/source/core/data/dputil.cxx b/sc/source/core/data/dputil.cxx
index 5bff6bb4d927..4d6094d39ff5 100644
--- a/sc/source/core/data/dputil.cxx
+++ b/sc/source/core/data/dputil.cxx
@@ -122,8 +122,7 @@ OUString ScDPUtil::getDateGroupName(
         {
             Date aDate(1, 1, SC_DP_LEAPYEAR);
             aDate += (nValue - 1);            // nValue is 1-based
-            Date aNullDate = pFormatter->GetNullDate();
-            long nDays = aDate - aNullDate;
+            long nDays = aDate - pFormatter->GetNullDate();
 
             const sal_uInt32 nFormat = pFormatter->GetFormatIndex(NF_DATE_SYS_DDMMM, ScGlobal::eLnge);
             Color* pColor;
diff --git a/sc/source/core/tool/interpr2.cxx b/sc/source/core/tool/interpr2.cxx
index 2eefbc3093c2..749673a0a7ec 100644
--- a/sc/source/core/tool/interpr2.cxx
+++ b/sc/source/core/tool/interpr2.cxx
@@ -513,8 +513,8 @@ void ScInterpreter::ScNetWorkdays( bool bOOXML_Version )
     {
         vector<double> nSortArray;
         bool bWeekendMask[ 7 ];
-        Date aNullDate = pFormatter->GetNullDate();
-        sal_uInt32 nNullDate = Date::DateToDays( aNullDate.GetDay(), aNullDate.GetMonth(), aNullDate.GetYear() );
+        const Date& rNullDate = pFormatter->GetNullDate();
+        sal_uInt32 nNullDate = Date::DateToDays( rNullDate.GetDay(), rNullDate.GetMonth(), rNullDate.GetYear() );
         FormulaError nErr;
         if ( bOOXML_Version )
         {
@@ -574,8 +574,8 @@ void ScInterpreter::ScWorkday_MS()
         nFuncFmtType = css::util::NumberFormat::DATE;
         vector<double> nSortArray;
         bool bWeekendMask[ 7 ];
-        Date aNullDate = pFormatter->GetNullDate();
-        sal_uInt32 nNullDate = Date::DateToDays( aNullDate.GetDay(), aNullDate.GetMonth(), aNullDate.GetYear() );
+        const Date& rNullDate = pFormatter->GetNullDate();
+        sal_uInt32 nNullDate = Date::DateToDays( rNullDate.GetDay(), rNullDate.GetMonth(), rNullDate.GetYear() );
         FormulaError nErr = GetWeekendAndHolidayMasks_MS( nParamCount, nNullDate,
                             nSortArray, bWeekendMask, true );
         if ( nErr != FormulaError::NONE )
diff --git a/sc/source/core/tool/interpr8.cxx b/sc/source/core/tool/interpr8.cxx
index 96da08bb6e58..b964a0a209a5 100644
--- a/sc/source/core/tool/interpr8.cxx
+++ b/sc/source/core/tool/interpr8.cxx
@@ -812,8 +812,7 @@ void ScETSForecastCalculation::refill()
 
 double ScETSForecastCalculation::convertXtoMonths( double x )
 {
-    Date aNullDate = mpFormatter->GetNullDate();
-    Date aDate = aNullDate + static_cast< long >( x );
+    Date aDate = mpFormatter->GetNullDate() + static_cast< long >( x );
     int nYear = aDate.GetYear();
     int nMonth = aDate.GetMonth();
     double fMonthLength;
diff --git a/sc/source/filter/orcus/interface.cxx b/sc/source/filter/orcus/interface.cxx
index c56f1c67cb80..1f59aa1f6675 100644
--- a/sc/source/filter/orcus/interface.cxx
+++ b/sc/source/filter/orcus/interface.cxx
@@ -529,8 +529,7 @@ void ScOrcusSheet::set_date_time(
     sal_uInt32 nSec = floor(second);
     sal_uInt32 nNanoSec = (second - nSec) * ::tools::Time::nanoSecPerSec;
     tools::Time aTime(hour, minute, nSec, nNanoSec);
-    Date aNullDate(pFormatter->GetNullDate());
-    long nDateDiff = aDate - aNullDate;
+    long nDateDiff = aDate - pFormatter->GetNullDate();
 
     double fTime =
         static_cast<double>(aTime.GetNanoSec()) / ::tools::Time::nanoSecPerSec +
diff --git a/sc/source/ui/view/cellsh1.cxx b/sc/source/ui/view/cellsh1.cxx
index 99e6ba02476a..c6c3d7631f71 100644
--- a/sc/source/ui/view/cellsh1.cxx
+++ b/sc/source/ui/view/cellsh1.cxx
@@ -689,10 +689,10 @@ void ScCellShell::ExecuteEdit( SfxRequest& rReq )
                         }
                         if(eFillCmd==FILL_DATE)
                         {
-                            Date aNullDate = pDoc->GetFormatTable()->GetNullDate();
-                            Date aStartDate = aNullDate;
+                            const Date& rNullDate = pDoc->GetFormatTable()->GetNullDate();
+                            Date aStartDate = rNullDate;
                             aStartDate+= (long)fStartVal;
-                            Date aEndDate = aNullDate;
+                            Date aEndDate = rNullDate;
                             aEndDate+= (long)fInputEndVal;
                             double fTempDate=0;
 
@@ -1119,10 +1119,10 @@ void ScCellShell::ExecuteEdit( SfxRequest& rReq )
                     {
                         ScAbstractDialogFactory* pFact = ScAbstractDialogFactory::Create();
                         OSL_ENSURE( pFact, "ScAbstractFactory create fail!" );
-                        Date aNullDate( GetViewData()->GetDocument()->GetFormatTable()->GetNullDate() );
+                        const Date& rNullDate( GetViewData()->GetDocument()->GetFormatTable()->GetNullDate() );
                         ScopedVclPtr<AbstractScDPDateGroupDlg> pDlg( pFact->CreateScDPDateGroupDlg(
                             pTabViewShell->GetDialogParent(),
-                            aNumInfo, nParts, aNullDate ) );
+                            aNumInfo, nParts, rNullDate ) );
                         OSL_ENSURE( pDlg, "Dialog create fail!" );
                         if( pDlg->Execute() == RET_OK )
                         {