206b5b2661
...warning about (for now only) functions and variables with external linkage
that likely don't need it.
The problems with moving entities into unnamed namespacs and breaking ADL
(as alluded to in comments in compilerplugins/clang/external.cxx) are
illustrated by the fact that while
struct S1 { int f() { return 0; } };
int f(S1 s) { return s.f(); }
namespace N {
struct S2: S1 { int f() { return 1; } };
int f(S2 s) { return s.f(); }
}
int main() { return f(N::S2()); }
returns 1, both moving just the struct S2 into an nunnamed namespace,
struct S1 { int f() { return 0; } };
int f(S1 s) { return s.f(); }
namespace N {
namespace { struct S2: S1 { int f() { return 1; } }; }
int f(S2 s) { return s.f(); }
}
int main() { return f(N::S2()); }
as well as moving just the function f overload into an unnamed namespace,
struct S1 { int f() { return 0; } };
int f(S1 s) { return s.f(); }
namespace N {
struct S2: S1 { int f() { return 1; } };
namespace { int f(S2 s) { return s.f(); } }
}
int main() { return f(N::S2()); }
would each change the program to return 0 instead.
Change-Id: I4d09f7ac5e8f9bcd6e6bde4712608444b642265c
Reviewed-on: https://gerrit.libreoffice.org/60539
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
247 lines
7.2 KiB
C++
247 lines
7.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <DomExport.hxx>
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#include <xmloff/nmspmap.hxx>
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#include <xmloff/xmlexp.hxx>
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#include <xmloff/xmlerror.hxx>
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#include <com/sun/star/uno/Reference.hxx>
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#include <com/sun/star/xml/dom/XAttr.hpp>
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#include <com/sun/star/xml/dom/XDocumentBuilder.hpp>
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#include <com/sun/star/xml/dom/XNode.hpp>
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#include <com/sun/star/xml/dom/XElement.hpp>
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#include <com/sun/star/xml/dom/XEntity.hpp>
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#include <com/sun/star/xml/dom/XNotation.hpp>
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#include <com/sun/star/xml/sax/XAttributeList.hpp>
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#include <com/sun/star/xml/dom/NodeType.hpp>
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#include <com/sun/star/xml/dom/XNamedNodeMap.hpp>
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#include <rtl/ustring.hxx>
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#include <rtl/ustrbuf.hxx>
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#include <sal/log.hxx>
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#include <vector>
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using com::sun::star::uno::Reference;
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using com::sun::star::uno::UNO_QUERY_THROW;
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using std::vector;
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using namespace com::sun::star::xml::dom;
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class DomVisitor
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{
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public:
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DomVisitor() {}
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virtual ~DomVisitor() {}
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virtual void element( const Reference<XElement>& ) {}
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virtual void character( const Reference<XCharacterData>& ) {}
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virtual void endElement( const Reference<XElement>& ) {}
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};
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static void visit( DomVisitor&, const Reference<XDocument>& );
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static void visit( DomVisitor&, const Reference<XNode>& );
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static void visitNode( DomVisitor& rVisitor, const Reference<XNode>& xNode )
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{
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switch( xNode->getNodeType() )
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{
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case NodeType_ATTRIBUTE_NODE:
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break;
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case NodeType_CDATA_SECTION_NODE:
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break;
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case NodeType_COMMENT_NODE:
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break;
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case NodeType_DOCUMENT_FRAGMENT_NODE:
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break;
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case NodeType_DOCUMENT_NODE:
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break;
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case NodeType_DOCUMENT_TYPE_NODE:
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break;
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case NodeType_ELEMENT_NODE:
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rVisitor.element( Reference<XElement>( xNode, UNO_QUERY_THROW ) );
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break;
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case NodeType_ENTITY_NODE:
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break;
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case NodeType_ENTITY_REFERENCE_NODE:
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break;
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case NodeType_NOTATION_NODE:
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break;
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case NodeType_PROCESSING_INSTRUCTION_NODE:
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break;
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case NodeType_TEXT_NODE:
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rVisitor.character( Reference<XCharacterData>( xNode, UNO_QUERY_THROW ) );
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break;
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default:
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OSL_FAIL( "unknown DOM node type" );
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break;
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}
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}
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void visit( DomVisitor& rVisitor, const Reference<XDocument>& xDocument )
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{
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visit( rVisitor, Reference<XNode>( xDocument, UNO_QUERY_THROW ) );
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}
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void visit( DomVisitor& rVisitor, const Reference<XNode>& xNode )
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{
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visitNode( rVisitor, xNode );
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for( Reference<XNode> xChild = xNode->getFirstChild();
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xChild.is();
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xChild = xChild->getNextSibling() )
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{
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visit( rVisitor, xChild );
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}
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if( xNode->getNodeType() == NodeType_ELEMENT_NODE )
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rVisitor.endElement( Reference<XElement>( xNode, UNO_QUERY_THROW ) );
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}
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class DomExport: public DomVisitor
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{
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SvXMLExport& mrExport;
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vector<SvXMLNamespaceMap> maNamespaces;
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void pushNamespace();
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void addNamespace( const OUString& sPrefix, const OUString& sURI );
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OUString qualifiedName( const OUString& sPrefix, const OUString& sURI,
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const OUString& sLocalName );
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OUString qualifiedName( const Reference<XElement>& );
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OUString qualifiedName( const Reference<XAttr>& );
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void addAttribute( const Reference<XAttr>& );
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public:
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explicit DomExport( SvXMLExport& rExport );
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virtual ~DomExport() override;
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virtual void element( const Reference<XElement>& ) override;
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virtual void endElement( const Reference<XElement>& ) override;
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virtual void character( const Reference<XCharacterData>& ) override;
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};
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DomExport::DomExport( SvXMLExport& rExport ) :
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mrExport( rExport )
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{
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maNamespaces.push_back( rExport.GetNamespaceMap() );
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}
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DomExport::~DomExport()
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{
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SAL_WARN_IF( maNamespaces.size() != 1, "xmloff", "namespace missing" );
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maNamespaces.clear();
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}
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void DomExport::pushNamespace()
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{
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SvXMLNamespaceMap const aMap(maNamespaces.back());
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maNamespaces.push_back(aMap);
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}
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void DomExport::addNamespace( const OUString& sPrefix, const OUString& sURI )
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{
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SvXMLNamespaceMap& rMap = maNamespaces.back();
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sal_uInt16 nKey = rMap.GetKeyByPrefix( sPrefix );
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// we need to register the namespace, if either the prefix isn't known or
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// is used for a different namespace
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if( nKey == XML_NAMESPACE_UNKNOWN ||
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rMap.GetNameByKey( nKey ) != sURI )
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{
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// add prefix to map, and add declaration
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rMap.Add( sPrefix, sURI );
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mrExport.AddAttribute( "xmlns:" + sPrefix, sURI );
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}
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}
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OUString DomExport::qualifiedName( const OUString& sPrefix,
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const OUString& sURI,
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const OUString& sLocalName )
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{
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OUStringBuffer sBuffer;
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if( !sPrefix.isEmpty() && !sURI.isEmpty() )
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{
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addNamespace( sPrefix, sURI );
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sBuffer.append( sPrefix );
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sBuffer.append( ':' );
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}
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sBuffer.append( sLocalName );
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return sBuffer.makeStringAndClear();
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}
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OUString DomExport::qualifiedName( const Reference<XElement>& xElement )
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{
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return qualifiedName( xElement->getPrefix(), xElement->getNamespaceURI(),
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xElement->getNodeName() );
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}
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OUString DomExport::qualifiedName( const Reference<XAttr>& xAttr )
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{
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return qualifiedName( xAttr->getPrefix(), xAttr->getNamespaceURI(),
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xAttr->getNodeName() );
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}
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void DomExport::addAttribute( const Reference<XAttr>& xAttribute )
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{
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mrExport.AddAttribute( qualifiedName( xAttribute ),
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xAttribute->getNodeValue() );
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}
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void DomExport::element( const Reference<XElement>& xElement )
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{
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pushNamespace();
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// write attributes
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Reference<XNamedNodeMap> xAttributes = xElement->getAttributes();
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sal_Int32 nLength = xAttributes.is() ? xAttributes->getLength() : 0;
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for( sal_Int32 n = 0; n < nLength; n++ )
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{
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addAttribute( Reference<XAttr>( xAttributes->item( n ), UNO_QUERY_THROW ) );
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}
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// write name
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mrExport.StartElement( qualifiedName( xElement ), false );
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}
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void DomExport::endElement( const Reference<XElement>& xElement )
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{
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mrExport.EndElement( qualifiedName( xElement ), false );
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maNamespaces.pop_back();
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}
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void DomExport::character( const Reference<XCharacterData>& xChars )
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{
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mrExport.Characters( xChars->getNodeValue() );
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}
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void exportDom( SvXMLExport& rExport, const Reference<XDocument>& xDocument )
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{
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DomExport aDomExport( rExport );
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visit( aDomExport, xDocument );
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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