Generate token array hash exactly once, when the string is tokenized.

And CompileString() is the place to do it, to the best of my knowledge.

Change-Id: I249df5d09aa288eacc2b2c7ad6e5fc947a3c225f

sc/inc/tokenarray.hxx

@@ -35,6 +35,8 @@ class SC_DLLPUBLIC ScTokenArray : public formula::FormulaTokenArray
     friend class ScCompiler;
     bool                    ImplGetReference( ScRange& rRange, bool bValidOnly ) const;
 
+    size_t mnHashValue;
+
 public:
     ScTokenArray();
     /// Assignment with references to ScToken entries (not copied!)
@@ -42,6 +44,7 @@ public:
    virtual ~ScTokenArray();
     ScTokenArray* Clone() const;    /// True copy!
 
+    void GenHash();
     size_t GetHash() const;
 
     /// Exactly and only one range (valid or deleted)

sc/source/core/tool/compiler.cxx

@@ -3951,6 +3951,7 @@ ScTokenArray* ScCompiler::CompileString( const String& rFormula )
 
     // remember pArr, in case a subsequent CompileTokenArray() is executed.
     ScTokenArray* pNew = new ScTokenArray( aArr );
+    pNew->GenHash();
     pArr = pNew;
 
     if (!maExternalFiles.empty())

sc/source/core/tool/token.cxx

@@ -1294,7 +1294,7 @@ size_t HashSingleRef( const ScSingleRefData& rRef )
 
 }
 
-size_t ScTokenArray::GetHash() const
+void ScTokenArray::GenHash()
 {
     static OUStringHash aHasher;
 
@@ -1357,7 +1357,13 @@ size_t ScTokenArray::GetHash() const
         // Use the opcode value in all the other cases.
         nHash += (static_cast<size_t>(eOp) << i);
     }
-    return nHash;
+
+    mnHashValue = nHash;
+}
+
+size_t ScTokenArray::GetHash() const
+{
+    return mnHashValue;
 }
 
 bool ScTokenArray::IsReference( ScRange& rRange ) const
@@ -1372,11 +1378,15 @@ bool ScTokenArray::IsValidReference( ScRange& rRange ) const
 
 ////////////////////////////////////////////////////////////////////////////
 
-ScTokenArray::ScTokenArray()
+ScTokenArray::ScTokenArray() :
+    FormulaTokenArray(),
+    mnHashValue(0)
 {
 }
 
-ScTokenArray::ScTokenArray( const ScTokenArray& rArr ) : FormulaTokenArray(rArr)
+ScTokenArray::ScTokenArray( const ScTokenArray& rArr ) :
+    FormulaTokenArray(rArr),
+    mnHashValue(rArr.mnHashValue)
 {
 }
 
@@ -1384,8 +1394,6 @@ ScTokenArray::~ScTokenArray()
 {
 }
 
-
-
 ScTokenArray& ScTokenArray::operator=( const ScTokenArray& rArr )
 {
     Clear();
@@ -1402,6 +1410,7 @@ ScTokenArray* ScTokenArray::Clone() const
     p->nMode = nMode;
     p->nError = nError;
     p->bHyperLink = bHyperLink;
+    p->mnHashValue = mnHashValue;
     FormulaToken** pp;
     if( nLen )
     {