Check number of cells referenced by group instead of group size

Put using it in #if 0 for now, though.

This reverts commit 2021275f.

Change-Id: Ia6541df12ee97747badbbedd758873688190b00c

sc/inc/formulacell.hxx

@@ -411,6 +411,10 @@ public:
     bool IsSharedTop() const;
     SCROW GetSharedTopRow() const;
     SCROW GetSharedLength() const;
+
+    // An estimate of the number of cells referenced by the formula
+    sal_Int32 GetWeight() const;
+
     ScTokenArray* GetSharedCode();
     const ScTokenArray* GetSharedCode() const;
 

sc/inc/tokenarray.hxx

@@ -60,6 +60,9 @@ public:
     virtual ~ScTokenArray();
     ScTokenArray* Clone() const;    /// True copy!
 
+    // An estimate of the number of cells referenced by the token array
+    sal_Int32 GetWeight() const;
+
     void GenHash();
     size_t GetHash() const { return mnHashValue;}
 

sc/source/core/data/formulacell.cxx

@@ -3766,7 +3766,7 @@ bool ScFormulaCell::InterpretFormulaGroup()
     if (mxGroup->meCalcState == sc::GroupCalcDisabled)
         return false;
 
-    if (GetSharedLength() < ScInterpreter::GetGlobalConfig().mnOpenCLMinimumFormulaGroupSize)
+    if (GetWeight() < ScInterpreter::GetGlobalConfig().mnOpenCLMinimumFormulaGroupSize)
     {
         mxGroup->meCalcState = sc::GroupCalcDisabled;
         return false;
@@ -4144,6 +4144,17 @@ SCROW ScFormulaCell::GetSharedLength() const
     return mxGroup ? mxGroup->mnLength : 0;
 }
 
+sal_Int32 ScFormulaCell::GetWeight() const
+{
+#if 0
+    if (!mxGroup)
+        return pCode->GetWeight();
+    return GetSharedLength() * GetSharedCode()->GetWeight();
+#else
+    return GetSharedLength();
+#endif
+}
+
 ScTokenArray* ScFormulaCell::GetSharedCode()
 {
     return mxGroup ? mxGroup->mpCode : NULL;

sc/source/core/tool/token.cxx

@@ -1417,6 +1417,33 @@ bool ScTokenArray::ImplGetReference( ScRange& rRange, const ScAddress& rPos, boo
     return bIs;
 }
 
+sal_Int32 ScTokenArray::GetWeight() const
+{
+    sal_Int32 result(1);
+
+    FormulaToken** p = pCode;
+    FormulaToken** pEnd = p + static_cast<size_t>(nLen);
+    for (; p != pEnd; ++p)
+    {
+        switch ((*p)->GetType())
+        {
+        case svDoubleRef :
+        case svExternalDoubleRef:
+            {
+                const ScComplexRefData& rRef = *(*p)->GetDoubleRef();
+                result += ( (rRef.Ref2.Row() - rRef.Ref1.Row() + 1) * (rRef.Ref2.Col() - rRef.Ref1.Col() + 1) );
+            }
+            break;
+        default:
+            break;
+        }
+    }
+    // Just print out the this pointer. It turns out to be quite complicated to get
+    // a symbolic printout of the ScTokenArray here.
+    SAL_INFO("sc.token", "GetWeight(" << this << "): " << result);
+    return result;
+}
+
 namespace {
 
 // we want to compare for similar not identical formulae