include/comphelper/makesequence.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef COMPHELPER_MAKESEQUENCE_HXX_INCLUDED
  21 #define COMPHELPER_MAKESEQUENCE_HXX_INCLUDED
  22
  23 #include "com/sun/star/uno/Sequence.hxx"
  24 #include "boost/preprocessor/cat.hpp"
  25 #include "boost/preprocessor/repetition.hpp"
  26 #include "boost/preprocessor/arithmetic/add.hpp"
  27
  28 namespace comphelper {
  29
  30 /** Creates a uno::Sequence out of one parameter.
  31 */
  32 template <typename T>
  33 inline ::com::sun::star::uno::Sequence<T> makeSequence( T const& element )
  34 {
  35     return ::com::sun::star::uno::Sequence<T>( &element, 1 );
  36 }
  37
  38 #define COMPHELPER_MAKESEQUENCE_assign(z_, n_, unused_) \
  39     p[n_] = BOOST_PP_CAT(element, n_);
  40
  41 /** The following preprocessor repetitions generate functions like
  42
  43     <pre>
  44         template <typename T>
  45         inline ::com::sun::star::uno::Sequence<T> makeSequence(
  46             T const& element0, T const& element1, ... );
  47     </pre>
  48
  49     which make a sequence out of the passed elements.
  50
  51     The maximum number of elements can be set by defining
  52     COMPHELPER_MAKESEQUENCE_MAX_ARGS; its default is 12.
  53 */
  54 #define COMPHELPER_MAKESEQUENCE_make(z_, n_, unused_) \
  55 template <typename T> \
  56 inline ::com::sun::star::uno::Sequence<T> makeSequence( \
  57     BOOST_PP_ENUM_PARAMS(n_, T const& element) ) \
  58 { \
  59     ::com::sun::star::uno::Sequence<T> seq( n_ ); \
  60     T * p = seq.getArray(); \
  61     BOOST_PP_REPEAT(n_, COMPHELPER_MAKESEQUENCE_assign, ~) \
  62     return seq; \
  63 }
  64
  65 #ifndef COMPHELPER_MAKESEQUENCE_MAX_ARGS
  66 #define COMPHELPER_MAKESEQUENCE_MAX_ARGS 12
  67 #endif
  68
  69 BOOST_PP_REPEAT_FROM_TO(2, BOOST_PP_ADD(COMPHELPER_MAKESEQUENCE_MAX_ARGS, 1),
  70                         COMPHELPER_MAKESEQUENCE_make, ~)
  71
  72 #undef COMPHELPER_MAKESEQUENCE_MAX_ARGS
  73 #undef COMPHELPER_MAKESEQUENCE_make
  74 #undef COMPHELPER_MAKESEQUENCE_assign
  75
  76 } // namespace comphelper
  77
  78 #endif //  ! defined(COMPHELPER_MAKESEQUENCE_HXX_INCLUDED)
  79
  80 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */