LibreOffice Module comphelper (master)  1
servicehelper.hxx
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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19 
20 #ifndef INCLUDED_COMPHELPER_SERVICEHELPER_HXX
21 #define INCLUDED_COMPHELPER_SERVICEHELPER_HXX
22 
23 #include <rtl/uuid.h>
24 #include <rtl/instance.hxx>
25 #include <com/sun/star/lang/XUnoTunnel.hpp>
26 #include <com/sun/star/uno/Sequence.hxx>
27 
29 {
30 private:
31  css::uno::Sequence< sal_Int8 > m_aSeq;
32 public:
33  UnoTunnelIdInit() : m_aSeq(16)
34  {
35  rtl_createUuid( reinterpret_cast<sal_uInt8*>(m_aSeq.getArray()), nullptr, true );
36  }
37  const css::uno::Sequence< sal_Int8 >& getSeq() const { return m_aSeq; }
38 };
39 
40 namespace comphelper {
41 
42  template<class T>
43  T* getUnoTunnelImplementation( const css::uno::Reference< css::uno::XInterface >& xIface )
44  {
45  css::uno::Reference< css::lang::XUnoTunnel > xUT( xIface, css::uno::UNO_QUERY );
46  if (!xUT.is())
47  return nullptr;
48 
49  return reinterpret_cast<T*>(sal::static_int_cast<sal_IntPtr>(xUT->getSomething( T::getUnoTunnelId() )));
50  }
51 
52 }
53 
54 template <typename T>
55 inline bool isUnoTunnelId(const css::uno::Sequence< sal_Int8 >& rId)
56 {
57  return rId.getLength() == 16
58  && memcmp( T::getUnoTunnelId().getConstArray(), rId.getConstArray(), 16 ) == 0;
59 }
60 
75 #define UNO3_GETIMPLEMENTATION_DECL( classname ) \
76  static const css::uno::Sequence< sal_Int8 > & getUnoTunnelId() noexcept; \
77  virtual sal_Int64 SAL_CALL getSomething( const css::uno::Sequence< sal_Int8 >& aIdentifier ) override;
78 
79 #define UNO3_GETIMPLEMENTATION_BASE_IMPL( classname ) \
80 const css::uno::Sequence< sal_Int8 > & classname::getUnoTunnelId() noexcept \
81 { \
82  static const UnoTunnelIdInit aId; \
83  return aId.getSeq(); \
84 }
85 
86 #define UNO3_GETIMPLEMENTATION_IMPL( classname )\
87 UNO3_GETIMPLEMENTATION_BASE_IMPL(classname)\
88 sal_Int64 SAL_CALL classname::getSomething( const css::uno::Sequence< sal_Int8 >& rId ) \
89 { \
90  if( isUnoTunnelId<classname>(rId) ) \
91  { \
92  return sal::static_int_cast<sal_Int64>(reinterpret_cast<sal_IntPtr>(this)); \
93  } \
94  return 0; \
95 }
96 
97 #define UNO3_GETIMPLEMENTATION2_IMPL( classname, baseclass )\
98 UNO3_GETIMPLEMENTATION_BASE_IMPL(classname)\
99 sal_Int64 SAL_CALL classname::getSomething( const css::uno::Sequence< sal_Int8 >& rId ) \
100 { \
101  if( isUnoTunnelId<classname>(rId) ) \
102  { \
103  return sal::static_int_cast<sal_Int64>(reinterpret_cast<sal_IntPtr>(this)); \
104  } \
105  else \
106  { \
107  return baseclass::getSomething( rId ); \
108  } \
109 }
110 
111 
112 #endif // INCLUDED_COMPHELPER_SERVICEHELPER_HXX
113 
114 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
bool isUnoTunnelId(const css::uno::Sequence< sal_Int8 > &rId)
T * getUnoTunnelImplementation(const css::uno::Reference< css::uno::XInterface > &xIface)
const css::uno::Sequence< sal_Int8 > & getSeq() const
css::uno::Sequence< sal_Int8 > m_aSeq