make ScInterpreterContext also accessible without passing it around

E.g. ScModelObj::GetFormatter() can be rather deep in the call chain
and it just doesn't make sense to pass ScInterpreterContext* to
all the relevant places (and it's a question if it makes sense
to pass it around at all, googling shows that thread_local is not
really _that_ slow).

Change-Id: I9114ef8a10d82a10968391718099edccde7a2663
Reviewed-on: https://gerrit.libreoffice.org/63184
Tested-by: Jenkins
Reviewed-by: Luboš Luňák <l.lunak@collabora.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/sc/inc/document.hxx b/sc/inc/document.hxx
index 6fe442954901..22ce96e010ef 100644
--- a/sc/inc/document.hxx
+++ b/sc/inc/document.hxx
@@ -275,9 +275,11 @@ const sal_uInt8 SC_DDE_IGNOREMODE    = 255;       /// For usage in FindDdeLink()
 struct ScDocumentThreadSpecific
 {
     ScRecursionHelper*      pRecursionHelper;               // information for recursive and iterative cell formulas
+    ScInterpreterContext* pContext;  // references the context passed around for easier access
 
-    ScDocumentThreadSpecific() :
-        pRecursionHelper(nullptr)
+    ScDocumentThreadSpecific()
+        : pRecursionHelper(nullptr)
+        , pContext(nullptr)
     {
     }
 
@@ -582,6 +584,11 @@ public:
         maInterpreterContext.mpFormatter = GetFormatTable();
         return maInterpreterContext;
     }
+    // Uses thread_local.
+    ScInterpreterContext& GetThreadedContext() const
+    {
+        return IsThreadedGroupCalcInProgress() ? *maThreadSpecific.pContext : GetNonThreadedContext();
+    }
     void SetupFromNonThreadedContext( ScInterpreterContext& threadedContext, int threadNumber );
     void MergeBackIntoNonThreadedContext( ScInterpreterContext& threadedContext, int threadNumber );
     void SetThreadedGroupCalcInProgress( bool set ) { (void)this; ScGlobal::bThreadedGroupCalcInProgress = set; }