loplugin:constparams in xmloff

Change-Id: I136ee42523a40c576d7cf0b66abbf50ad9be052f
Reviewed-on: https://gerrit.libreoffice.org/40517
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

35 files changed, 94 insertions, 94 deletions

diff --git a/xmloff/inc/DomBuilderContext.hxx b/xmloff/inc/DomBuilderContext.hxx
index 211cb6c83d58..b298df0ad813 100644
--- a/xmloff/inc/DomBuilderContext.hxx
+++ b/xmloff/inc/DomBuilderContext.hxx
@@ -56,7 +56,7 @@ public:
     DomBuilderContext( SvXMLImport& rImport,
                        sal_uInt16 nPrefix,
                        const OUString& rLocalName,
-                       css::uno::Reference<css::xml::dom::XNode>& );
+                       css::uno::Reference<css::xml::dom::XNode> const & );
 
     virtual ~DomBuilderContext() override;
 
diff --git a/xmloff/inc/XMLImageMapContext.hxx b/xmloff/inc/XMLImageMapContext.hxx
index b6a5b09f35af..f535a2ad3cf9 100644
--- a/xmloff/inc/XMLImageMapContext.hxx
+++ b/xmloff/inc/XMLImageMapContext.hxx
@@ -48,7 +48,7 @@ public:
         SvXMLImport& rImport,
         sal_uInt16 nPrefix,
         const OUString& rLocalName,
-        css::uno::Reference< css::beans::XPropertySet> & rPropertySet);
+        css::uno::Reference< css::beans::XPropertySet> const & rPropertySet);
 
     virtual ~XMLImageMapContext() override;
 
diff --git a/xmloff/inc/xmlversion.hxx b/xmloff/inc/xmlversion.hxx
index 8feb0cb5cec2..0c8f69fdcc4e 100644
--- a/xmloff/inc/xmlversion.hxx
+++ b/xmloff/inc/xmlversion.hxx
@@ -41,7 +41,7 @@ public:
         const css::uno::Reference< css::uno::XComponentContext >& rContext,
         const css::uno::Sequence < css::util::RevisionTag >& rVersions,
         const OUString &rFileName,
-        css::uno::Reference< css::xml::sax::XDocumentHandler > &rHandler );
+        css::uno::Reference< css::xml::sax::XDocumentHandler > const &rHandler );
 
     ErrCode     exportDoc( enum ::xmloff::token::XMLTokenEnum eClass = ::xmloff::token::XML_TOKEN_INVALID ) override;
     void        ExportAutoStyles_() override {}
diff --git a/xmloff/source/chart/SchXMLChartContext.cxx b/xmloff/source/chart/SchXMLChartContext.cxx
index a65e6c81434d..916928d00353 100644
--- a/xmloff/source/chart/SchXMLChartContext.cxx
+++ b/xmloff/source/chart/SchXMLChartContext.cxx
@@ -1190,7 +1190,7 @@ void SchXMLChartContext::InitChart(
 SchXMLTitleContext::SchXMLTitleContext( SchXMLImportHelper& rImpHelper, SvXMLImport& rImport,
                                         const OUString& rLocalName,
                                         OUString& rTitle,
-                                        uno::Reference< drawing::XShape >& xTitleShape ) :
+                                        uno::Reference< drawing::XShape > const & xTitleShape ) :
         SvXMLImportContext( rImport, XML_NAMESPACE_CHART, rLocalName ),
         mrImportHelper( rImpHelper ),
         mrTitle( rTitle ),
diff --git a/xmloff/source/chart/SchXMLChartContext.hxx b/xmloff/source/chart/SchXMLChartContext.hxx
index da5514c246e4..14782920b4c2 100644
--- a/xmloff/source/chart/SchXMLChartContext.hxx
+++ b/xmloff/source/chart/SchXMLChartContext.hxx
@@ -137,7 +137,7 @@ public:
     SchXMLTitleContext( SchXMLImportHelper& rImpHelper,
                         SvXMLImport& rImport, const OUString& rLocalName,
                         OUString& rTitle,
-                        css::uno::Reference< css::drawing::XShape >& xTitleShape );
+                        css::uno::Reference< css::drawing::XShape > const & xTitleShape );
     virtual ~SchXMLTitleContext() override;
 
     virtual void StartElement( const css::uno::Reference< css::xml::sax::XAttributeList >& xAttrList ) override;
diff --git a/xmloff/source/chart/SchXMLPlotAreaContext.cxx b/xmloff/source/chart/SchXMLPlotAreaContext.cxx
index e76f51b04c52..03ee2ecf1d84 100644
--- a/xmloff/source/chart/SchXMLPlotAreaContext.cxx
+++ b/xmloff/source/chart/SchXMLPlotAreaContext.cxx
@@ -752,7 +752,7 @@ SchXMLWallFloorContext::SchXMLWallFloorContext(
     SvXMLImport& rImport,
     sal_uInt16 nPrefix,
     const OUString& rLocalName,
-    uno::Reference< chart::XDiagram >& xDiagram,
+    uno::Reference< chart::XDiagram > const & xDiagram,
     ContextType eContextType ) :
         SvXMLImportContext( rImport, nPrefix, rLocalName ),
         mrImportHelper( rImpHelper ),
@@ -801,7 +801,7 @@ SchXMLStockContext::SchXMLStockContext(
     SvXMLImport& rImport,
     sal_uInt16 nPrefix,
     const OUString& rLocalName,
-    uno::Reference< chart::XDiagram >& xDiagram,
+    uno::Reference< chart::XDiagram > const & xDiagram,
     ContextType eContextType ) :
         SvXMLImportContext( rImport, nPrefix, rLocalName ),
         mrImportHelper( rImpHelper ),
diff --git a/xmloff/source/chart/SchXMLPlotAreaContext.hxx b/xmloff/source/chart/SchXMLPlotAreaContext.hxx
index f839420b8718..d369af474998 100644
--- a/xmloff/source/chart/SchXMLPlotAreaContext.hxx
+++ b/xmloff/source/chart/SchXMLPlotAreaContext.hxx
@@ -189,7 +189,7 @@ public:
                             SvXMLImport& rImport,
                             sal_uInt16 nPrefix,
                             const OUString& rLocalName,
-                            css::uno::Reference< css::chart::XDiagram >& xDiagram,
+                            css::uno::Reference< css::chart::XDiagram > const & xDiagram,
                             ContextType eContextType );
     virtual ~SchXMLWallFloorContext() override;
     virtual void StartElement( const css::uno::Reference< css::xml::sax::XAttributeList >& xAttrList ) override;
@@ -215,7 +215,7 @@ public:
                         SvXMLImport& rImport,
                         sal_uInt16 nPrefix,
                         const OUString& rLocalName,
-                        css::uno::Reference< css::chart::XDiagram >& xDiagram,
+                        css::uno::Reference< css::chart::XDiagram > const & xDiagram,
                         ContextType eContextType );
     virtual ~SchXMLStockContext() override;
     virtual void StartElement( const css::uno::Reference< css::xml::sax::XAttributeList >& xAttrList ) override;
diff --git a/xmloff/source/core/DomBuilderContext.cxx b/xmloff/source/core/DomBuilderContext.cxx
index 8907f6a284df..354358fa88ea 100644
--- a/xmloff/source/core/DomBuilderContext.cxx
+++ b/xmloff/source/core/DomBuilderContext.cxx
@@ -74,7 +74,7 @@ DomBuilderContext::DomBuilderContext( SvXMLImport& rImport,
 DomBuilderContext::DomBuilderContext( SvXMLImport& rImport,
                                       sal_uInt16 nPrefix,
                                       const OUString& rLocalName,
-                                      Reference<XNode>& xParent ) :
+                                      Reference<XNode> const & xParent ) :
     SvXMLImportContext( rImport, nPrefix, rLocalName ),
     mxNode( lcl_createElement( rImport, nPrefix, rLocalName, xParent ) )
 {
diff --git a/xmloff/source/draw/XMLImageMapContext.cxx b/xmloff/source/draw/XMLImageMapContext.cxx
index fdc1f145be60..0fafed0fc439 100644
--- a/xmloff/source/draw/XMLImageMapContext.cxx
+++ b/xmloff/source/draw/XMLImageMapContext.cxx
@@ -548,7 +548,7 @@ XMLImageMapContext::XMLImageMapContext(
     SvXMLImport& rImport,
     sal_uInt16 nPrefix,
     const OUString& rLocalName,
-    Reference<XPropertySet> & rPropertySet) :
+    Reference<XPropertySet> const & rPropertySet) :
         SvXMLImportContext(rImport, nPrefix, rLocalName),
         sImageMap("ImageMap"),
         xPropertySet(rPropertySet)
diff --git a/xmloff/source/draw/shapeimport.cxx b/xmloff/source/draw/shapeimport.cxx
index c20bb8c2f560..e7f9f61c5858 100644
--- a/xmloff/source/draw/shapeimport.cxx
+++ b/xmloff/source/draw/shapeimport.cxx
@@ -338,7 +338,7 @@ SvXMLShapeContext* XMLShapeImportHelper::Create3DSceneChildContext(
     sal_uInt16 p_nPrefix,
     const OUString& rLocalName,
     const uno::Reference< xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 {
     SdXMLShapeContext *pContext = nullptr;
 
@@ -413,7 +413,7 @@ SvXMLShapeContext* XMLShapeImportHelper::CreateGroupChildContext(
     sal_uInt16 p_nPrefix,
     const OUString& rLocalName,
     const uno::Reference< xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
 {
     SdXMLShapeContext *pContext = nullptr;
@@ -546,7 +546,7 @@ SvXMLShapeContext* XMLShapeImportHelper::CreateFrameChildContext(
     sal_uInt16 p_nPrefix,
     const OUString& rLocalName,
     const uno::Reference< xml::sax::XAttributeList>& rAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     const uno::Reference< xml::sax::XAttributeList>& rFrameAttrList)
 {
     SdXMLShapeContext *pContext = nullptr;
@@ -714,14 +714,14 @@ public:
     sal_Int32                       mnCurrentZ;
     std::shared_ptr<ShapeSortContext> mpParentContext;
 
-    ShapeSortContext( uno::Reference< drawing::XShapes >& rShapes, std::shared_ptr<ShapeSortContext> pParentContext );
+    ShapeSortContext( uno::Reference< drawing::XShapes > const & rShapes, std::shared_ptr<ShapeSortContext> pParentContext );
 
     void popGroupAndSort();
 private:
     void moveShape( sal_Int32 nSourcePos, sal_Int32 nDestPos );
 };
 
-ShapeSortContext::ShapeSortContext( uno::Reference< drawing::XShapes >& rShapes, std::shared_ptr<ShapeSortContext> pParentContext )
+ShapeSortContext::ShapeSortContext( uno::Reference< drawing::XShapes > const & rShapes, std::shared_ptr<ShapeSortContext> pParentContext )
 :   mxShapes( rShapes ), mnCurrentZ( 0 ), mpParentContext( std::move(pParentContext) )
 {
 }
diff --git a/xmloff/source/draw/ximp3dobject.cxx b/xmloff/source/draw/ximp3dobject.cxx
index 930ce52dd326..ebc182936ac4 100644
--- a/xmloff/source/draw/ximp3dobject.cxx
+++ b/xmloff/source/draw/ximp3dobject.cxx
@@ -44,7 +44,7 @@ SdXML3DObjectContext::SdXML3DObjectContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, false/*bTemporaryShape*/ ),
     mbSetTransform( false )
 {
@@ -100,7 +100,7 @@ SdXML3DCubeObjectShapeContext::SdXML3DCubeObjectShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 :   SdXML3DObjectContext( rImport, nPrfx, rLocalName, xAttrList, rShapes ),
     maMinEdge(-2500.0, -2500.0, -2500.0),
     maMaxEdge(2500.0, 2500.0, 2500.0)
@@ -182,7 +182,7 @@ SdXML3DSphereObjectShapeContext::SdXML3DSphereObjectShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 :   SdXML3DObjectContext( rImport, nPrfx, rLocalName, xAttrList, rShapes ),
     maCenter(0.0, 0.0, 0.0),
     maSphereSize(5000.0, 5000.0, 5000.0)
@@ -261,7 +261,7 @@ SdXML3DPolygonBasedShapeContext::SdXML3DPolygonBasedShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 :   SdXML3DObjectContext( rImport, nPrfx, rLocalName, xAttrList, rShapes )
 {
     sal_Int16 nAttrCount = xAttrList.is() ? xAttrList->getLength() : 0;
@@ -338,7 +338,7 @@ SdXML3DLatheObjectShapeContext::SdXML3DLatheObjectShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 :   SdXML3DPolygonBasedShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes )
 {
 }
@@ -364,7 +364,7 @@ SdXML3DExtrudeObjectShapeContext::SdXML3DExtrudeObjectShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 :   SdXML3DPolygonBasedShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes )
 {
 }
diff --git a/xmloff/source/draw/ximp3dobject.hxx b/xmloff/source/draw/ximp3dobject.hxx
index 3c68cd1b7bbc..4c3db9dd99c5 100644
--- a/xmloff/source/draw/ximp3dobject.hxx
+++ b/xmloff/source/draw/ximp3dobject.hxx
@@ -45,7 +45,7 @@ public:
         sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXML3DObjectContext() override;
 
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -63,7 +63,7 @@ public:
     SdXML3DCubeObjectShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXML3DCubeObjectShapeContext() override;
 
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -81,7 +81,7 @@ public:
     SdXML3DSphereObjectShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXML3DSphereObjectShapeContext() override;
 
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -99,7 +99,7 @@ public:
     SdXML3DPolygonBasedShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXML3DPolygonBasedShapeContext() override;
 
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -114,7 +114,7 @@ public:
     SdXML3DLatheObjectShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXML3DLatheObjectShapeContext() override;
 
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -129,7 +129,7 @@ public:
     SdXML3DExtrudeObjectShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXML3DExtrudeObjectShapeContext() override;
 
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
diff --git a/xmloff/source/draw/ximp3dscene.cxx b/xmloff/source/draw/ximp3dscene.cxx
index 511b005694ce..d6bcbeea619d 100644
--- a/xmloff/source/draw/ximp3dscene.cxx
+++ b/xmloff/source/draw/ximp3dscene.cxx
@@ -101,7 +101,7 @@ SdXML3DSceneShapeContext::SdXML3DSceneShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShapes)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShapes ), SdXML3DSceneAttributesHelper( rImport )
 {
diff --git a/xmloff/source/draw/ximp3dscene.hxx b/xmloff/source/draw/ximp3dscene.hxx
index 6a3ef0fccd51..e99b3b5bdefa 100644
--- a/xmloff/source/draw/ximp3dscene.hxx
+++ b/xmloff/source/draw/ximp3dscene.hxx
@@ -41,7 +41,7 @@ public:
         sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXML3DSceneShapeContext() override;
 
diff --git a/xmloff/source/draw/ximpbody.cxx b/xmloff/source/draw/ximpbody.cxx
index f6be2889a974..3560d8818197 100644
--- a/xmloff/source/draw/ximpbody.cxx
+++ b/xmloff/source/draw/ximpbody.cxx
@@ -44,7 +44,7 @@ using namespace ::com::sun::star;
 SdXMLDrawPageContext::SdXMLDrawPageContext( SdXMLImport& rImport,
     sal_uInt16 nPrfx, const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 :   SdXMLGenericPageContext( rImport, nPrfx, rLocalName, xAttrList, rShapes )
 ,   mbHadSMILNodes( false )
 {
diff --git a/xmloff/source/draw/ximpbody.hxx b/xmloff/source/draw/ximpbody.hxx
index 7494b73aa815..3616480b2fbc 100644
--- a/xmloff/source/draw/ximpbody.hxx
+++ b/xmloff/source/draw/ximpbody.hxx
@@ -40,7 +40,7 @@ public:
     SdXMLDrawPageContext( SdXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXMLDrawPageContext() override;
 
     virtual SvXMLImportContext *CreateChildContext(
diff --git a/xmloff/source/draw/ximpgrp.cxx b/xmloff/source/draw/ximpgrp.cxx
index 1757a88e5816..555f446433b6 100644
--- a/xmloff/source/draw/ximpgrp.cxx
+++ b/xmloff/source/draw/ximpgrp.cxx
@@ -32,7 +32,7 @@ SdXMLGroupShapeContext::SdXMLGroupShapeContext(
     SvXMLImport& rImport,
     sal_uInt16 nPrfx, const OUString& rLocalName,
     const uno::Reference< xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape )
 {
diff --git a/xmloff/source/draw/ximpgrp.hxx b/xmloff/source/draw/ximpgrp.hxx
index 5f57a2d208f1..665b1639aeb9 100644
--- a/xmloff/source/draw/ximpgrp.hxx
+++ b/xmloff/source/draw/ximpgrp.hxx
@@ -37,7 +37,7 @@ public:
 
     SdXMLGroupShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx, const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXMLGroupShapeContext() override;
 
diff --git a/xmloff/source/draw/ximplink.cxx b/xmloff/source/draw/ximplink.cxx
index edbc4bb30d42..3bbe4271d89d 100644
--- a/xmloff/source/draw/ximplink.cxx
+++ b/xmloff/source/draw/ximplink.cxx
@@ -25,7 +25,7 @@ using namespace ::com::sun::star;
 using namespace ::xmloff::token;
 
 
-SdXMLShapeLinkContext::SdXMLShapeLinkContext( SvXMLImport& rImport, sal_uInt16 nPrfx, const OUString& rLocalName, const uno::Reference< xml::sax::XAttributeList>& xAttrList, uno::Reference< drawing::XShapes >& rShapes)
+SdXMLShapeLinkContext::SdXMLShapeLinkContext( SvXMLImport& rImport, sal_uInt16 nPrfx, const OUString& rLocalName, const uno::Reference< xml::sax::XAttributeList>& xAttrList, uno::Reference< drawing::XShapes > const & rShapes)
 : SvXMLShapeContext( rImport, nPrfx, rLocalName, false )
 , mxParent( rShapes )
 {
diff --git a/xmloff/source/draw/ximplink.hxx b/xmloff/source/draw/ximplink.hxx
index 8960d4d8f818..dac00fdbec70 100644
--- a/xmloff/source/draw/ximplink.hxx
+++ b/xmloff/source/draw/ximplink.hxx
@@ -41,7 +41,7 @@ public:
 
     SdXMLShapeLinkContext( SvXMLImport& rImport, sal_uInt16 nPrfx, const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXMLShapeLinkContext() override;
 
     virtual SvXMLImportContext *CreateChildContext(
diff --git a/xmloff/source/draw/ximpnote.cxx b/xmloff/source/draw/ximpnote.cxx
index 365b7fd573ee..bb30e4510aac 100644
--- a/xmloff/source/draw/ximpnote.cxx
+++ b/xmloff/source/draw/ximpnote.cxx
@@ -24,7 +24,7 @@ using namespace ::com::sun::star;
 SdXMLNotesContext::SdXMLNotesContext( SdXMLImport& rImport,
     sal_uInt16 nPrfx, const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 :   SdXMLGenericPageContext( rImport, nPrfx, rLocalName, xAttrList, rShapes )
 {
     OUString sStyleName;
diff --git a/xmloff/source/draw/ximpnote.hxx b/xmloff/source/draw/ximpnote.hxx
index ace197b6e0a8..b9fd9bdaa7ef 100644
--- a/xmloff/source/draw/ximpnote.hxx
+++ b/xmloff/source/draw/ximpnote.hxx
@@ -36,7 +36,7 @@ public:
     SdXMLNotesContext( SdXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXMLNotesContext() override;
 };
 
diff --git a/xmloff/source/draw/ximppage.cxx b/xmloff/source/draw/ximppage.cxx
index 6be82e5e56fb..35deee58ab56 100644
--- a/xmloff/source/draw/ximppage.cxx
+++ b/xmloff/source/draw/ximppage.cxx
@@ -210,7 +210,7 @@ SdXMLGenericPageContext::SdXMLGenericPageContext(
     SvXMLImport& rImport,
     sal_uInt16 nPrfx, const OUString& rLocalName,
     const Reference< xml::sax::XAttributeList>& xAttrList,
-    Reference< drawing::XShapes >& rShapes)
+    Reference< drawing::XShapes > const & rShapes)
 : SvXMLImportContext( rImport, nPrfx, rLocalName )
 , mxShapes( rShapes )
 , mxAnnotationAccess( rShapes, UNO_QUERY )
diff --git a/xmloff/source/draw/ximppage.hxx b/xmloff/source/draw/ximppage.hxx
index 1ed281a48a12..938ad814c968 100644
--- a/xmloff/source/draw/ximppage.hxx
+++ b/xmloff/source/draw/ximppage.hxx
@@ -63,7 +63,7 @@ public:
 
     SdXMLGenericPageContext( SvXMLImport& rImport, sal_uInt16 nPrfx, const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXMLGenericPageContext() override;
 
     virtual void StartElement( const css::uno::Reference< css::xml::sax::XAttributeList >& xAttrList ) override;
diff --git a/xmloff/source/draw/ximpshap.cxx b/xmloff/source/draw/ximpshap.cxx
index 4477ff92e957..1e21344dae0f 100644
--- a/xmloff/source/draw/ximpshap.cxx
+++ b/xmloff/source/draw/ximpshap.cxx
@@ -139,7 +139,7 @@ SdXMLShapeContext::SdXMLShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
     : SvXMLShapeContext( rImport, nPrfx, rLocalName, bTemporaryShape )
     , mxShapes( rShapes )
@@ -929,7 +929,7 @@ SdXMLRectShapeContext::SdXMLRectShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape ),
     mnRadius( 0 )
@@ -994,7 +994,7 @@ SdXMLLineShapeContext::SdXMLLineShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape ),
     mnX1( 0 ),
@@ -1107,7 +1107,7 @@ SdXMLEllipseShapeContext::SdXMLEllipseShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape ),
     mnCX( 0 ),
@@ -1231,7 +1231,7 @@ SdXMLPolygonShapeContext::SdXMLPolygonShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes, bool bClosed, bool bTemporaryShape)
+    uno::Reference< drawing::XShapes > const & rShapes, bool bClosed, bool bTemporaryShape)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape ),
     mbClosed( bClosed )
 {
@@ -1336,7 +1336,7 @@ SdXMLPathShapeContext::SdXMLPathShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape )
 {
@@ -1485,7 +1485,7 @@ SdXMLTextBoxShapeContext::SdXMLTextBoxShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, false/*bTemporaryShape*/ ),
     mnRadius(0),
     maChainNextName("")
@@ -1673,7 +1673,7 @@ SdXMLControlShapeContext::SdXMLControlShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape )
 {
@@ -1737,7 +1737,7 @@ SdXMLConnectorShapeContext::SdXMLConnectorShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape ),
     maStart(0,0),
@@ -2043,7 +2043,7 @@ SdXMLMeasureShapeContext::SdXMLMeasureShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape ),
     maStart(0,0),
@@ -2149,7 +2149,7 @@ SdXMLPageShapeContext::SdXMLPageShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape ), mnPageNumber(0)
 {
@@ -2236,7 +2236,7 @@ SdXMLCaptionShapeContext::SdXMLCaptionShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape ),
     // #86616# for correct edge rounding import mnRadius needs to be initialized
@@ -2336,7 +2336,7 @@ SdXMLGraphicObjectShapeContext::SdXMLGraphicObjectShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, false/*bTemporaryShape*/ ),
     maURL()
 {
@@ -2500,7 +2500,7 @@ SdXMLChartShapeContext::SdXMLChartShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes,
+    uno::Reference< drawing::XShapes > const & rShapes,
     bool bTemporaryShape)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape )
 {
@@ -2595,7 +2595,7 @@ SvXMLImportContext * SdXMLChartShapeContext::CreateChildContext( sal_uInt16 nPre
 SdXMLObjectShapeContext::SdXMLObjectShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes)
+        css::uno::Reference< css::drawing::XShapes > const & rShapes)
 : SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, false/*bTemporaryShape*/ )
 {
 }
@@ -2806,7 +2806,7 @@ SvXMLImportContext* SdXMLObjectShapeContext::CreateChildContext(
 SdXMLAppletShapeContext::SdXMLAppletShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes)
+        css::uno::Reference< css::drawing::XShapes > const & rShapes)
 : SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, false/*bTemporaryShape*/ ),
   mbIsScript( false )
 {
@@ -2957,7 +2957,7 @@ SvXMLImportContext * SdXMLAppletShapeContext::CreateChildContext( sal_uInt16 p_n
 SdXMLPluginShapeContext::SdXMLPluginShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes) :
+        css::uno::Reference< css::drawing::XShapes > const & rShapes) :
 SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, false/*bTemporaryShape*/ ),
 mbMedia( false )
 {
@@ -3227,7 +3227,7 @@ SvXMLImportContext * SdXMLPluginShapeContext::CreateChildContext( sal_uInt16 p_n
 SdXMLFloatingFrameShapeContext::SdXMLFloatingFrameShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes)
+        css::uno::Reference< css::drawing::XShapes > const & rShapes)
 : SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, false/*bTemporaryShape*/ )
 {
 }
@@ -3313,7 +3313,7 @@ void SdXMLFloatingFrameShapeContext::EndElement()
 SdXMLFrameShapeContext::SdXMLFrameShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape)
 : SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, bTemporaryShape ),
     MultiImageImportHelper(),
@@ -3617,7 +3617,7 @@ SdXMLCustomShapeContext::SdXMLCustomShapeContext(
     sal_uInt16 nPrfx,
     const OUString& rLocalName,
     const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 :   SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, false/*bTemporaryShape*/ )
 {
     // See the XMLTextFrameContext ctor, a frame has Writer content (and not
@@ -3845,7 +3845,7 @@ SvXMLImportContext* SdXMLCustomShapeContext::CreateChildContext(
 }
 
 
-SdXMLTableShapeContext::SdXMLTableShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx, const OUString& rLocalName, const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList, css::uno::Reference< css::drawing::XShapes >& rShapes )
+SdXMLTableShapeContext::SdXMLTableShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx, const OUString& rLocalName, const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList, css::uno::Reference< css::drawing::XShapes > const & rShapes )
 : SdXMLShapeContext( rImport, nPrfx, rLocalName, xAttrList, rShapes, false )
 {
     memset( &maTemplateStylesUsed, 0, sizeof( maTemplateStylesUsed ) );
diff --git a/xmloff/source/draw/ximpshap.hxx b/xmloff/source/draw/ximpshap.hxx
index 407710e6c1c9..71dfad28d06c 100644
--- a/xmloff/source/draw/ximpshap.hxx
+++ b/xmloff/source/draw/ximpshap.hxx
@@ -110,7 +110,7 @@ public:
         sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXMLShapeContext() override;
 
@@ -136,7 +136,7 @@ public:
     SdXMLRectShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXMLRectShapeContext() override;
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -159,7 +159,7 @@ public:
     SdXMLLineShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXMLLineShapeContext() override;
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -185,7 +185,7 @@ public:
     SdXMLEllipseShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXMLEllipseShapeContext() override;
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -207,7 +207,7 @@ public:
     SdXMLPolygonShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes, bool bClosed, bool bTemporaryShape);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes, bool bClosed, bool bTemporaryShape);
     virtual ~SdXMLPolygonShapeContext() override;
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
 
@@ -227,7 +227,7 @@ public:
     SdXMLPathShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXMLPathShapeContext() override;
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -248,7 +248,7 @@ public:
     SdXMLTextBoxShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXMLTextBoxShapeContext() override;
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
 
@@ -268,7 +268,7 @@ public:
     SdXMLControlShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXMLControlShapeContext() override;
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -304,7 +304,7 @@ public:
     SdXMLConnectorShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXMLConnectorShapeContext() override;
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -326,7 +326,7 @@ public:
     SdXMLMeasureShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXMLMeasureShapeContext() override;
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -347,7 +347,7 @@ public:
     SdXMLPageShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXMLPageShapeContext() override;
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -369,7 +369,7 @@ public:
     SdXMLCaptionShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXMLCaptionShapeContext() override;
     virtual void StartElement(const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList) override;
@@ -391,7 +391,7 @@ public:
     SdXMLGraphicObjectShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXMLGraphicObjectShapeContext() override;
 
     virtual void StartElement( const css::uno::Reference< css::xml::sax::XAttributeList >& xAttrList ) override;
@@ -414,7 +414,7 @@ public:
     SdXMLChartShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
 
     virtual void StartElement( const css::uno::Reference< css::xml::sax::XAttributeList >& xAttrList ) override;
@@ -439,7 +439,7 @@ public:
     SdXMLObjectShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXMLObjectShapeContext() override;
 
     virtual void StartElement( const css::uno::Reference< css::xml::sax::XAttributeList >& xAttrList ) override;
@@ -469,7 +469,7 @@ public:
     SdXMLAppletShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXMLAppletShapeContext() override;
 
     virtual void StartElement( const css::uno::Reference< css::xml::sax::XAttributeList >& xAttrList ) override;
@@ -498,7 +498,7 @@ public:
     SdXMLPluginShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXMLPluginShapeContext() override;
 
     virtual void StartElement( const css::uno::Reference< css::xml::sax::XAttributeList >& xAttrList ) override;
@@ -528,7 +528,7 @@ public:
     SdXMLFloatingFrameShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXMLFloatingFrameShapeContext() override;
 
     virtual void StartElement( const css::uno::Reference< css::xml::sax::XAttributeList >& xAttrList ) override;
@@ -557,7 +557,7 @@ public:
     SdXMLFrameShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes,
+        css::uno::Reference< css::drawing::XShapes > const & rShapes,
         bool bTemporaryShape);
     virtual ~SdXMLFrameShapeContext() override;
 
@@ -585,7 +585,7 @@ public:
 
     SdXMLCustomShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx, const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXMLCustomShapeContext() override;
 
     virtual void StartElement( const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList ) override;
@@ -607,7 +607,7 @@ public:
     SdXMLTableShapeContext( SvXMLImport& rImport, sal_uInt16 nPrfx,
         const OUString& rLocalName,
         const css::uno::Reference< css::xml::sax::XAttributeList>& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes );
+        css::uno::Reference< css::drawing::XShapes > const & rShapes );
     virtual ~SdXMLTableShapeContext() override;
 
     virtual void StartElement( const css::uno::Reference< css::xml::sax::XAttributeList >& xAttrList ) override;
diff --git a/xmloff/source/draw/ximpstyl.cxx b/xmloff/source/draw/ximpstyl.cxx
index 0df1d145314f..8a5751f7d526 100644
--- a/xmloff/source/draw/ximpstyl.cxx
+++ b/xmloff/source/draw/ximpstyl.cxx
@@ -738,7 +738,7 @@ SdXMLMasterPageContext::SdXMLMasterPageContext(
     sal_uInt16 nPrfx,
     const OUString& rLName,
     const uno::Reference< xml::sax::XAttributeList>& xAttrList,
-    uno::Reference< drawing::XShapes >& rShapes)
+    uno::Reference< drawing::XShapes > const & rShapes)
 :   SdXMLGenericPageContext( rImport, nPrfx, rLName, xAttrList, rShapes )
 {
     const bool bHandoutMaster = IsXMLToken( rLName, XML_HANDOUT_MASTER );
diff --git a/xmloff/source/draw/ximpstyl.hxx b/xmloff/source/draw/ximpstyl.hxx
index a159c895386b..c33bcf092264 100644
--- a/xmloff/source/draw/ximpstyl.hxx
+++ b/xmloff/source/draw/ximpstyl.hxx
@@ -105,7 +105,7 @@ public:
         sal_uInt16 nPrfx,
         const OUString& rLName,
         const css::uno::Reference< css::xml::sax::XAttributeList >& xAttrList,
-        css::uno::Reference< css::drawing::XShapes >& rShapes);
+        css::uno::Reference< css::drawing::XShapes > const & rShapes);
     virtual ~SdXMLMasterPageContext() override;
 
     virtual SvXMLImportContext *CreateChildContext(
diff --git a/xmloff/source/meta/xmlversion.cxx b/xmloff/source/meta/xmlversion.cxx
index 622e418c5594..13410f4aaad8 100644
--- a/xmloff/source/meta/xmlversion.cxx
+++ b/xmloff/source/meta/xmlversion.cxx
@@ -44,7 +44,7 @@ XMLVersionListExport::XMLVersionListExport(
     const css::uno::Reference< css::uno::XComponentContext >& rContext,
     const css::uno::Sequence < css::util::RevisionTag >& rVersions,
     const OUString &rFileName,
-    Reference< XDocumentHandler > &rHandler )
+    Reference< XDocumentHandler > const &rHandler )
 :   SvXMLExport( rContext, "", rFileName, util::MeasureUnit::CM, rHandler ),
     maVersions( rVersions )
 {
diff --git a/xmloff/source/style/impastpl.cxx b/xmloff/source/style/impastpl.cxx
index cebd614357d9..263388579b21 100644
--- a/xmloff/source/style/impastpl.cxx
+++ b/xmloff/source/style/impastpl.cxx
@@ -169,7 +169,7 @@ any2string(uno::Any any)
 // Class SvXMLAutoStylePoolProperties_Impl
 // ctor class SvXMLAutoStylePoolProperties_Impl
 
-XMLAutoStylePoolProperties::XMLAutoStylePoolProperties( XMLAutoStyleFamily& rFamilyData, const vector< XMLPropertyState >& rProperties, OUString& rParentName )
+XMLAutoStylePoolProperties::XMLAutoStylePoolProperties( XMLAutoStyleFamily& rFamilyData, const vector< XMLPropertyState >& rProperties, OUString const & rParentName )
 : maProperties( rProperties ),
   mnPos       ( rFamilyData.mnCount )
 {
diff --git a/xmloff/source/style/impastpl.hxx b/xmloff/source/style/impastpl.hxx
index 85ada9be3621..eec145cd19c9 100644
--- a/xmloff/source/style/impastpl.hxx
+++ b/xmloff/source/style/impastpl.hxx
@@ -50,7 +50,7 @@ class XMLAutoStylePoolProperties
 
 public:
 
-    XMLAutoStylePoolProperties( XMLAutoStyleFamily& rFamilyData, const ::std::vector< XMLPropertyState >& rProperties, OUString& rParentname );
+    XMLAutoStylePoolProperties( XMLAutoStyleFamily& rFamilyData, const ::std::vector< XMLPropertyState >& rProperties, OUString const & rParentname );
 
     const OUString& GetName() const { return msName; }
     const ::std::vector< XMLPropertyState >& GetProperties() const { return maProperties; }
diff --git a/xmloff/source/style/numehelp.cxx b/xmloff/source/style/numehelp.cxx
index 5bc0c5fe9a6b..21e778f16775 100644
--- a/xmloff/source/style/numehelp.cxx
+++ b/xmloff/source/style/numehelp.cxx
@@ -42,7 +42,7 @@ using namespace xmloff::token;
 #define XML_STANDARDFORMAT "StandardFormat"
 
 XMLNumberFormatAttributesExportHelper::XMLNumberFormatAttributesExportHelper(
-            css::uno::Reference< css::util::XNumberFormatsSupplier >& xTempNumberFormatsSupplier)
+            css::uno::Reference< css::util::XNumberFormatsSupplier > const & xTempNumberFormatsSupplier)
     : xNumberFormats(xTempNumberFormatsSupplier.is() ? xTempNumberFormatsSupplier->getNumberFormats() : css::uno::Reference< css::util::XNumberFormats > ()),
     pExport(nullptr),
     sStandardFormat(XML_STANDARDFORMAT),
@@ -54,7 +54,7 @@ XMLNumberFormatAttributesExportHelper::XMLNumberFormatAttributesExportHelper(
 }
 
 XMLNumberFormatAttributesExportHelper::XMLNumberFormatAttributesExportHelper(
-            css::uno::Reference< css::util::XNumberFormatsSupplier >& xTempNumberFormatsSupplier,
+            css::uno::Reference< css::util::XNumberFormatsSupplier > const & xTempNumberFormatsSupplier,
             SvXMLExport& rTempExport )
 :   xNumberFormats(xTempNumberFormatsSupplier.is() ? xTempNumberFormatsSupplier->getNumberFormats() : css::uno::Reference< css::util::XNumberFormats > ()),
     pExport(&rTempExport),
diff --git a/xmloff/source/table/XMLTableImport.cxx b/xmloff/source/table/XMLTableImport.cxx
index 71b2a8a6d804..9042de6b1450 100644
--- a/xmloff/source/table/XMLTableImport.cxx
+++ b/xmloff/source/table/XMLTableImport.cxx
@@ -92,7 +92,7 @@ typedef std::vector< std::shared_ptr< MergeInfo > > MergeInfoVector;
 class XMLTableImportContext : public SvXMLImportContext
 {
 public:
-    XMLTableImportContext( const rtl::Reference< XMLTableImport >& xThis, sal_uInt16 nPrfx, const OUString& rLName, Reference< XColumnRowRange >& xColumnRowRange );
+    XMLTableImportContext( const rtl::Reference< XMLTableImport >& xThis, sal_uInt16 nPrfx, const OUString& rLName, Reference< XColumnRowRange > const & xColumnRowRange );
 
     virtual SvXMLImportContext *CreateChildContext( sal_uInt16 nPrefix, const OUString& rLocalName, const Reference< XAttributeList >& xAttrList ) override;
 
@@ -229,7 +229,7 @@ XMLTableImport::~XMLTableImport()
 {
 }
 
-SvXMLImportContext* XMLTableImport::CreateTableContext( sal_uInt16 nPrfx, const OUString& rLName, Reference< XColumnRowRange >& xColumnRowRange )
+SvXMLImportContext* XMLTableImport::CreateTableContext( sal_uInt16 nPrfx, const OUString& rLName, Reference< XColumnRowRange > const & xColumnRowRange )
 {
     rtl::Reference< XMLTableImport > xThis( this );
     return new XMLTableImportContext( xThis, nPrfx, rLName, xColumnRowRange );
@@ -362,7 +362,7 @@ void XMLTableImport::finishStyles()
 
 // class XMLTableImport
 
-XMLTableImportContext::XMLTableImportContext( const rtl::Reference< XMLTableImport >& xImporter, sal_uInt16 nPrfx, const OUString& rLName,  Reference< XColumnRowRange >& xColumnRowRange )
+XMLTableImportContext::XMLTableImportContext( const rtl::Reference< XMLTableImport >& xImporter, sal_uInt16 nPrfx, const OUString& rLName,  Reference< XColumnRowRange > const & xColumnRowRange )
 : SvXMLImportContext( xImporter->mrImport, nPrfx, rLName )
 , mxTable( xColumnRowRange, UNO_QUERY )
 , mxColumns( xColumnRowRange->getColumns() )
diff --git a/xmloff/source/xforms/SchemaRestrictionContext.cxx b/xmloff/source/xforms/SchemaRestrictionContext.cxx
index 5afd5e6b0b85..86a52ba9a09b 100644
--- a/xmloff/source/xforms/SchemaRestrictionContext.cxx
+++ b/xmloff/source/xforms/SchemaRestrictionContext.cxx
@@ -82,7 +82,7 @@ SchemaRestrictionContext::SchemaRestrictionContext(
     SvXMLImport& rImport,
     sal_uInt16 nPrefix,
     const OUString& rLocalName,
-    Reference<css::xforms::XDataTypeRepository>& rRepository,
+    Reference<css::xforms::XDataTypeRepository> const & rRepository,
     const OUString& sTypeName ) :
         TokenContext( rImport, nPrefix, rLocalName, aAttributes, aChildren ),
         mxRepository( rRepository ),
diff --git a/xmloff/source/xforms/SchemaRestrictionContext.hxx b/xmloff/source/xforms/SchemaRestrictionContext.hxx
index 2de3fcea7cca..8f6bbd0db2d3 100644
--- a/xmloff/source/xforms/SchemaRestrictionContext.hxx
+++ b/xmloff/source/xforms/SchemaRestrictionContext.hxx
@@ -44,7 +44,7 @@ public:
     SchemaRestrictionContext( SvXMLImport& rImport,
                               sal_uInt16 nPrfx,
                               const OUString& rLName,
-                              css::uno::Reference<css::xforms::XDataTypeRepository>& rRepository,
+                              css::uno::Reference<css::xforms::XDataTypeRepository> const & rRepository,
                               const OUString& sTypeName );
 
 protected: