Introduce and use ScInterpreter::IsInArrayContext(), tdf#91502 follow-up

Change-Id: I4c6299e9b6890eb22f50586ceb5788057527e88c
Reviewed-on: https://gerrit.libreoffice.org/58124Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins

sc/source/core/inc/interpre.hxx

@@ -391,6 +391,10 @@ private:
     void ConvertMatrixJumpConditionToMatrix();
     // If MatrixFormula or ForceArray: ConvertMatrixParameters()
     inline bool MatrixParameterConversion();
+    // If MatrixFormula or ForceArray. Can be used within spreadsheet functions
+    // that do not depend on the formula cell's matrix size, for which only
+    // bMatrixFormula can be used.
+    inline bool IsInArrayContext() const;
     ScMatrixRef PopMatrix();
     sc::RangeMatrix PopRangeMatrix();
     void QueryMatrixType(const ScMatrixRef& xMat, SvNumFormatType& rRetTypeExpr, sal_uInt32& rRetIndexExpr);
@@ -1013,6 +1017,11 @@ public:
     sal_uLong                   GetRetFormatIndex() const   { return nRetFmtIndex; }
 };
 
+inline bool ScInterpreter::IsInArrayContext() const
+{
+    return bMatrixFormula || pCur->IsInForceArray();
+}
+
 inline void ScInterpreter::MatrixJumpConditionToMatrix()
 {
     if (bMatrixFormula || pCur->IsInForceArray())

sc/source/core/tool/interpr1.cxx

@@ -2691,7 +2691,7 @@ void ScInterpreter::ScIsFormula()
     switch ( GetStackType() )
     {
         case svDoubleRef :
-            if (bMatrixFormula || pCur->IsInForceArray())
+            if (IsInArrayContext())
             {
                 SCCOL nCol1, nCol2;
                 SCROW nRow1, nRow2;
@@ -2759,7 +2759,7 @@ void ScInterpreter::ScFormula()
     switch ( GetStackType() )
     {
         case svDoubleRef :
-            if (bMatrixFormula || pCur->IsInForceArray())
+            if (IsInArrayContext())
             {
                 SCCOL nCol1, nCol2;
                 SCROW nRow1, nRow2;