SvxAccessibleTextIndex::mnEEIndex need not be bounded sal_uInt16

It was originally introduced with type USHORT
(a909acb7 "#98735# Refactored
unoedit/unoedacc.cxx"), then shortly after changed to sal_Int32
(a0089a21 "#98735# Fixed various off-by-one
mistakes"), presumably because it needed to hold values slightly larger than
USHRT_MAX.

But at least since the surrounding code has been changed to use sal_Int32
throughout (e.g., structs like EPosition and ESeleciton in
include/editeng/editdata.hxx with 3cbfcee3
"xub_StrLen and tools/string.hxx final straw"), there appears to be no more
reason to effectively restrict mnEEIndex to sal_uInt16 values.

Change-Id: I78f02be1f2736a626a836ac992230a74cc669fd3
Reviewed-on: https://gerrit.libreoffice.org/48766Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

editeng/source/uno/unoedprx.cxx

@@ -89,9 +89,9 @@ public:
         @param rTF
         The text forwarder to use in the calculations
      */
-    void SetEEIndex( sal_uInt16 nEEIndex, const SvxTextForwarder& rTF );
-    void SetEEIndex( sal_Int32 nPara, sal_uInt16 nEEIndex, const SvxTextForwarder& rTF ) { SetParagraph(nPara); SetEEIndex(nEEIndex, rTF); }
-    sal_uInt16 GetEEIndex() const;
+    void SetEEIndex( sal_Int32 nEEIndex, const SvxTextForwarder& rTF );
+    void SetEEIndex( sal_Int32 nPara, sal_Int32 nEEIndex, const SvxTextForwarder& rTF ) { SetParagraph(nPara); SetEEIndex(nEEIndex, rTF); }
+    sal_Int32 GetEEIndex() const;
 
     void SetFieldOffset( sal_Int32 nOffset, sal_Int32 nLen ) { mnFieldOffset = nOffset; mnFieldLen = nLen; }
     sal_Int32 GetFieldOffset() const { return mnFieldOffset; }
@@ -158,15 +158,15 @@ ESelection MakeEESelection( const SvxAccessibleTextIndex& rIndex )
                        rIndex.GetParagraph(), rIndex.GetEEIndex() + 1 );
 }
 
-sal_uInt16 SvxAccessibleTextIndex::GetEEIndex() const
+sal_Int32 SvxAccessibleTextIndex::GetEEIndex() const
 {
-    DBG_ASSERT(mnEEIndex >= 0 && mnEEIndex <= USHRT_MAX,
+    DBG_ASSERT(mnEEIndex >= 0,
                "SvxAccessibleTextIndex::GetEEIndex: index value overflow");
 
-    return static_cast< sal_uInt16 > (mnEEIndex);
+    return mnEEIndex;
 }
 
-void SvxAccessibleTextIndex::SetEEIndex( sal_uInt16 nEEIndex, const SvxTextForwarder& rTF )
+void SvxAccessibleTextIndex::SetEEIndex( sal_Int32 nEEIndex, const SvxTextForwarder& rTF )
 {
     // reset
     mnFieldOffset = 0;
@@ -632,7 +632,7 @@ void SvxAccessibleTextAdapter::FieldClicked( const SvxFieldItem& rField, sal_Int
     mpTextForwarder->FieldClicked( rField, nPara, nPos );
 }
 
-sal_uInt16 SvxAccessibleTextAdapter::CalcEditEngineIndex( sal_Int32 nPara, sal_Int32 nLogicalIndex )
+sal_Int32 SvxAccessibleTextAdapter::CalcEditEngineIndex( sal_Int32 nPara, sal_Int32 nLogicalIndex )
 {
     assert(mpTextForwarder && "SvxAccessibleTextAdapter: no forwarder");
 

include/editeng/unoedprx.hxx

@@ -42,7 +42,7 @@ public:
     virtual void            RemoveAttribs( const ESelection& rSelection ) override;
     virtual void            GetPortions( sal_Int32 nPara, std::vector<sal_Int32>& rList ) const override;
 
-    sal_uInt16              CalcEditEngineIndex( sal_Int32 nPara, sal_Int32 nLogicalIndex );
+    sal_Int32               CalcEditEngineIndex( sal_Int32 nPara, sal_Int32 nLogicalIndex );
 
     virtual SfxItemState    GetItemState( const ESelection& rSel, sal_uInt16 nWhich ) const override;
     virtual SfxItemState    GetItemState( sal_Int32 nPara, sal_uInt16 nWhich ) const override;