python/include/boost/python/def_visitor.hpp at develop · shelltdf/python · GitHub

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// Copyright David Abrahams 2003.

// Distributed under the Boost Software License, Version 1.0. (See

// accompanying file LICENSE_1_0.txt or copy at

// http://www.boost.org/LICENSE_1_0.txt)

#ifndef DEF_VISITOR_DWA2003810_HPP

# define DEF_VISITOR_DWA2003810_HPP

# include <boost/python/detail/prefix.hpp>

# include <boost/detail/workaround.hpp>

namespace boost { namespace python {

template <class DerivedVisitor> class def_visitor;

template <class T, class X1, class X2, class X3> class class_;

class def_visitor_access

{

# if defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS) \

|| BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x551))

// Tasteless as this may seem, making all members public allows member templates

// to work in the absence of member template friends.

public:

# else

template <class Derived> friend class def_visitor;

# endif

// unnamed visit, c.f. init<...>, container suites

template <class V, class classT>

static void visit(V const& v, classT& c)

{

v.derived_visitor().visit(c);

}

// named visit, c.f. object, pure_virtual

template <class V, class classT, class OptionalArgs>

static void visit(

V const& v

, classT& c

, char const* name

, OptionalArgs const& options

)

{

v.derived_visitor().visit(c, name, options);

}

};

template <class DerivedVisitor>

class def_visitor

{

friend class def_visitor_access;

# if defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS) \

|| BOOST_WORKAROUND(BOOST_BORLANDC, BOOST_TESTED_AT(0x551))

// Tasteless as this may seem, making all members public allows member templates

// to work in the absence of member template friends.

public:

# else

template <class T, class X1, class X2, class X3> friend class class_;

# endif

// unnamed visit, c.f. init<...>, container suites

template <class classT>

void visit(classT& c) const

{

def_visitor_access::visit(*this, c);

}

// named visit, c.f. object, pure_virtual

template <class classT, class OptionalArgs>

void visit(classT& c, char const* name, OptionalArgs const& options) const

{

def_visitor_access::visit(*this, c, name, options);

}

protected:

DerivedVisitor const& derived_visitor() const

{

return static_cast<DerivedVisitor const&>(*this);

}

};

}} // namespace boost::python

#endif // DEF_VISITOR_DWA2003810_HPP

python/include/boost/python/def_visitor.hpp at develop · shelltdf/python · GitHub

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