writerfilter: make members private in RTFMathSymbol

Change-Id: I5c63c28ba4c63e17b74e656d5382d45c9fcc6baa
Reviewed-on: https://gerrit.libreoffice.org/67428
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

writerfilter/source/rtftok/rtfcontrolwords.cxx

@@ -1900,7 +1900,7 @@ int nRTFMathControlWords = SAL_N_ELEMENTS(aRTFMathControlWords);
 
 bool RTFMathSymbol::operator<(const RTFMathSymbol& rOther) const
 {
-    return eKeyword < rOther.eKeyword;
+    return m_eKeyword < rOther.m_eKeyword;
 }
 
 } // namespace rtftok

writerfilter/source/rtftok/rtfcontrolwords.hxx

@@ -2024,11 +2024,25 @@ extern RTFSymbol const aRTFControlWords[];
 extern int nRTFControlWords;
 
 /// Represents an RTF Math Control Word
-struct RTFMathSymbol
+class RTFMathSymbol
 {
-    RTFKeyword eKeyword;
-    int nToken; ///< This is the OOXML token equivalent.
-    Destination eDestination;
+    RTFKeyword m_eKeyword;
+    int m_nToken; ///< This is the OOXML token equivalent.
+    Destination m_eDestination;
+
+public:
+    RTFMathSymbol(RTFKeyword eKeyword, int nToken = 0,
+                  Destination eDestination = Destination::NORMAL)
+        : m_eKeyword(eKeyword)
+        , m_nToken(nToken)
+        , m_eDestination(eDestination)
+    {
+    }
+
+    int GetToken() const { return m_nToken; }
+
+    Destination GetDestination() const { return m_eDestination; }
+
     bool operator<(const RTFMathSymbol& rOther) const;
 };
 

writerfilter/source/rtftok/rtfdispatchdestination.cxx

@@ -635,12 +635,11 @@ RTFError RTFDocumentImpl::dispatchDestination(RTFKeyword nKeyword)
             default:
             {
                 // Check if it's a math token.
-                RTFMathSymbol aSymbol;
-                aSymbol.eKeyword = nKeyword;
+                RTFMathSymbol aSymbol(nKeyword);
                 if (RTFTokenizer::lookupMathKeyword(aSymbol))
                 {
-                    m_aMathBuffer.appendOpeningTag(aSymbol.nToken);
-                    m_aStates.top().eDestination = aSymbol.eDestination;
+                    m_aMathBuffer.appendOpeningTag(aSymbol.GetToken());
+                    m_aStates.top().eDestination = aSymbol.GetDestination();
                     return RTFError::OK;
                 }