1 files changed, 169 insertions, 0 deletions
diff --git a/sc/inc/interpretercontext.hxx b/sc/inc/interpretercontext.hxx
new file mode 100644
index 0000000000..39d528cb6c
--- /dev/null
+++ b/sc/inc/interpretercontext.hxx
@@ -0,0 +1,169 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <vector>
+#include <memory>
+#include "types.hxx"
+
+namespace formula
+{
+class FormulaToken;
+}
+
+#define TOKEN_CACHE_SIZE 8
+
+class ScDocument;
+class SvNumberFormatter;
+struct ScLookupCacheMap;
+class ScInterpreter;
+enum class SvNumFormatType : sal_Int16;
+
+// SetNumberFormat() is not thread-safe, so calls to it need to be delayed to the main thread.
+struct DelayedSetNumberFormat
+{
+    SCCOL mCol;
+    SCROW mRow;
+    sal_uInt32 mnNumberFormat;
+};
+
+struct NFIndexAndFmtType
+{
+    sal_uInt32 nIndex;
+    SvNumFormatType eType : 16;
+    bool bIsValid : 1;
+
+    NFIndexAndFmtType()
+        : nIndex(0)
+        , eType(static_cast<SvNumFormatType>(0))
+        , bIsValid(false)
+    {
+    }
+};
+
+class ScInterpreterContextPool;
+
+struct ScInterpreterContext
+{
+    const ScDocument* mpDoc;
+    size_t mnTokenCachePos;
+    std::vector<formula::FormulaToken*> maTokens;
+    std::vector<DelayedSetNumberFormat> maDelayedSetNumberFormat;
+    std::unique_ptr<ScLookupCacheMap> mxScLookupCache; // cache for lookups like VLOOKUP and MATCH
+    // Allocation cache for "aConditions" array in ScInterpreter::IterateParameterIfs()
+    // This is populated/used only when formula-group threading is enabled.
+    std::vector<sal_uInt8> maConditions;
+    ScInterpreter* pInterpreter;
+
+    ScInterpreterContext(const ScDocument& rDoc, SvNumberFormatter* pFormatter);
+
+    ScInterpreterContext() = delete;
+
+    ~ScInterpreterContext();
+
+    SvNumberFormatter* GetFormatTable() const
+    {
+        if (mpFormatter == nullptr)
+            const_cast<ScInterpreterContext*>(this)->initFormatTable();
+        return mpFormatter;
+    }
+
+    SvNumFormatType GetNumberFormatType(sal_uInt32 nFIndex) const;
+
+private:
+    friend class ScInterpreterContextPool;
+    void ResetTokens();
+    void SetDocAndFormatter(const ScDocument& rDoc, SvNumberFormatter* pFormatter);
+    void Cleanup();
+    void ClearLookupCache(const ScDocument* pDoc);
+    void initFormatTable();
+    SvNumberFormatter* mpFormatter;
+    mutable NFIndexAndFmtType maNFTypeCache;
+};
+
+class ScThreadedInterpreterContextGetterGuard;
+class ScInterpreterContextGetterGuard;
+
+class ScInterpreterContextPool
+{
+    friend class ScThreadedInterpreterContextGetterGuard;
+    friend class ScInterpreterContextGetterGuard;
+
+    std::vector<std::unique_ptr<ScInterpreterContext>> maPool;
+    size_t mnNextFree;
+    bool mbThreaded;
+
+    ScInterpreterContextPool(bool bThreaded)
+        : mnNextFree(0)
+        , mbThreaded(bThreaded)
+    {
+    }
+
+    ~ScInterpreterContextPool() {}
+
+    static ScInterpreterContextPool aThreadedInterpreterPool;
+    static ScInterpreterContextPool aNonThreadedInterpreterPool;
+
+    // API for threaded case
+
+    // Ensures nNumThreads elements in pool.
+    void Init(size_t nNumThreads, const ScDocument& rDoc, SvNumberFormatter* pFormatter);
+
+    // Returns ScInterpreterContext* for thread index nThreadIdx
+    ScInterpreterContext* GetInterpreterContextForThreadIdx(size_t nThreadIdx) const;
+
+    // API for non-threaded
+
+    // Ensures there is one unused element in the pool.
+    void Init(const ScDocument& rDoc, SvNumberFormatter* pFormatter);
+
+    // Returns ScInterpreterContext* for non-threaded use.
+    ScInterpreterContext* GetInterpreterContext() const;
+
+    // Common API for threaded/non-threaded
+
+    // Cleans up the contexts prepared by call to immediately previous Init() and
+    // marks them all as unused.
+    void ReturnToPool();
+
+public:
+    // Only to be used to clear lookup cache in all pool elements
+    static void ClearLookupCaches(const ScDocument* pDoc);
+};
+
+class ScThreadedInterpreterContextGetterGuard
+{
+    ScInterpreterContextPool& rPool;
+
+public:
+    ScThreadedInterpreterContextGetterGuard(size_t nNumThreads, const ScDocument& rDoc,
+                                            SvNumberFormatter* pFormatter);
+    ~ScThreadedInterpreterContextGetterGuard();
+
+    // Returns ScInterpreterContext* for thread index nThreadIdx
+    ScInterpreterContext* GetInterpreterContextForThreadIdx(size_t nThreadIdx) const;
+};
+
+class ScInterpreterContextGetterGuard
+{
+    ScInterpreterContextPool& rPool;
+#if !defined NDEBUG
+    size_t nContextIdx;
+#endif
+
+public:
+    ScInterpreterContextGetterGuard(const ScDocument& rDoc, SvNumberFormatter* pFormatter);
+    ~ScInterpreterContextGetterGuard();
+
+    // Returns ScInterpreterContext* for non-threaded use.
+    ScInterpreterContext* GetInterpreterContext() const;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */