os/ossrv/ossrv_pub/boost_apis/boost/python/override.hpp
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib.
     1 #if !defined(BOOST_PP_IS_ITERATING)
     2 
     3 // Copyright David Abrahams 2004. Distributed under the Boost
     4 // Software License, Version 1.0. (See accompanying
     5 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
     6 #ifndef OVERRIDE_DWA2004721_HPP
     7 # define OVERRIDE_DWA2004721_HPP
     8 
     9 # include <boost/python/detail/prefix.hpp>
    10 
    11 # include <boost/python/converter/return_from_python.hpp>
    12 
    13 # include <boost/python/extract.hpp>
    14 # include <boost/python/handle.hpp>
    15 
    16 #  include <boost/preprocessor/iterate.hpp>
    17 #  include <boost/preprocessor/repeat.hpp>
    18 #  include <boost/preprocessor/debug/line.hpp>
    19 #  include <boost/preprocessor/repetition/enum_params.hpp>
    20 #  include <boost/preprocessor/repetition/enum_binary_params.hpp>
    21 
    22 #  include <boost/type.hpp>
    23 
    24 namespace boost { namespace python {
    25 
    26 class override;
    27 
    28 namespace detail
    29 {
    30   class wrapper_base;
    31   
    32   // The result of calling a method.
    33   class method_result
    34   {
    35    private:
    36       friend class boost::python::override;
    37       explicit method_result(PyObject* x)
    38         : m_obj(x)
    39       {}
    40 
    41    public:
    42       template <class T>
    43       operator T()
    44       {
    45           converter::return_from_python<T> converter;
    46           return converter(m_obj.release());
    47       }
    48 
    49 #  if BOOST_WORKAROUND(_MSC_FULL_VER, BOOST_TESTED_AT(140050215))
    50       template <class T>
    51       operator T*()
    52       {
    53           converter::return_from_python<T*> converter;
    54           return converter(m_obj.release());
    55       }
    56 #  endif 
    57       
    58 #  if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1400)) || BOOST_WORKAROUND(BOOST_INTEL_WIN, >= 900)
    59       // No operator T&
    60 #  else
    61       
    62       template <class T>
    63       operator T&() const
    64       {
    65           converter::return_from_python<T&> converter;
    66           return converter(const_cast<handle<>&>(m_obj).release());
    67       }
    68 #  endif 
    69 
    70       template <class T>
    71       T as(type<T>* = 0)
    72       {
    73           converter::return_from_python<T> converter;
    74           return converter(m_obj.release());
    75       }
    76 
    77       template <class T>
    78       T unchecked(type<T>* = 0)
    79       {
    80           return extract<T>(m_obj)();
    81       }
    82    private:
    83       mutable handle<> m_obj;
    84   };
    85 }
    86 
    87 class override : public object
    88 {
    89  private:
    90     friend class detail::wrapper_base;
    91     override(handle<> x)
    92       : object(x)
    93     {}
    94     
    95  public:
    96     detail::method_result
    97     operator()() const
    98     {
    99         detail::method_result x(
   100             PyEval_CallFunction(
   101                 this->ptr()
   102               , const_cast<char*>("()")
   103             ));
   104         return x;
   105     }
   106 
   107 # define BOOST_PYTHON_fast_arg_to_python_get(z, n, _)   \
   108     , converter::arg_to_python<A##n>(a##n).get()
   109 
   110 # define BOOST_PP_ITERATION_PARAMS_1 (3, (1, BOOST_PYTHON_MAX_ARITY, <boost/python/override.hpp>))
   111 # include BOOST_PP_ITERATE()
   112 
   113 # undef BOOST_PYTHON_fast_arg_to_python_get
   114 };
   115 
   116 }} // namespace boost::python
   117 
   118 #endif // OVERRIDE_DWA2004721_HPP
   119 
   120 #else
   121 # if !(BOOST_WORKAROUND(__MWERKS__, > 0x3100)                      \
   122         && BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3201)))
   123 #  line BOOST_PP_LINE(__LINE__, override.hpp)
   124 # endif 
   125 
   126 # define N BOOST_PP_ITERATION()
   127 
   128 template <
   129     BOOST_PP_ENUM_PARAMS_Z(1, N, class A)
   130     >
   131 detail::method_result
   132 operator()( BOOST_PP_ENUM_BINARY_PARAMS_Z(1, N, A, const& a) ) const
   133 {
   134     detail::method_result x(
   135         PyEval_CallFunction(
   136             this->ptr()
   137           , const_cast<char*>("(" BOOST_PP_REPEAT_1ST(N, BOOST_PYTHON_FIXED, "O") ")")
   138             BOOST_PP_REPEAT_1ST(N, BOOST_PYTHON_fast_arg_to_python_get, nil)
   139         ));
   140     return x;
   141 }
   142 
   143 # undef N
   144 #endif