From 0797dd8714413f8319515df9831a86703b589558 Mon Sep 17 00:00:00 2001
From: Kohei Yoshida <kohei.yoshida@gmail.com>
Date: Wed, 10 Jul 2013 16:32:39 -0400
Subject: Group formula cells in ScColumn::MixData().

Change-Id: I38186e2bf82ed56fbe859b17dcc1d31f36471bd8
---
 sc/inc/sharedformula.hxx | 58 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 sc/inc/sharedformula.hxx

(limited to 'sc/inc/sharedformula.hxx')

diff --git a/sc/inc/sharedformula.hxx b/sc/inc/sharedformula.hxx
new file mode 100644
index 000000000000..fcab6d7dba0d
--- /dev/null
+++ b/sc/inc/sharedformula.hxx
@@ -0,0 +1,58 @@
+/* -*- 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/.
+ */
+
+#ifndef SC_SHAREDFORMULA_HXX
+#define SC_SHAREDFORMULA_HXX
+
+#include "formulacell.hxx"
+
+namespace sc {
+
+class SharedFormulaUtil
+{
+public:
+
+    template<typename _Iter>
+    static void groupFormulaCells(const _Iter& itBeg, const _Iter& itEnd)
+    {
+        _Iter it = itBeg;
+        ScFormulaCell* pPrev = *it;
+        ScFormulaCell* pCur = NULL;
+        for (++it; it != itEnd; ++it, pPrev = pCur)
+        {
+            pCur = *it;
+            ScFormulaCell::CompareState eState = pPrev->CompareByTokenArray(*pPrev);
+            if (eState == ScFormulaCell::NotEqual)
+                continue;
+
+            ScFormulaCellGroupRef xGroup = pPrev->GetCellGroup();
+            if (xGroup)
+            {
+                // Extend the group.
+                ++xGroup->mnLength;
+                pCur->SetCellGroup(xGroup);
+                continue;
+            }
+
+            // Create a new group.
+            xGroup.reset(new ScFormulaCellGroup);
+            xGroup->mnStart = pPrev->aPos.Row();
+            xGroup->mnLength = 2;
+            xGroup->mbInvariant = (eState == ScFormulaCell::EqualInvariant);
+            pPrev->SetCellGroup(xGroup);
+            pCur->SetCellGroup(xGroup);
+        }
+    }
+};
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
-- 
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