74 lines
2 KiB
C++
74 lines
2 KiB
C++
/* No include guard - this file is safe to reuse */
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#if defined(DXX_WANT_ARRAY) && !defined(DXX_INCLUDED_ARRAY)
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#define DXX_INCLUDED_ARRAY
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#if defined(DXX_HAVE_CXX_ARRAY)
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#include <array>
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using std::array;
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#elif defined(DXX_HAVE_CXX_TR1_ARRAY)
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#include <tr1/array>
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using std::tr1::array;
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#elif defined(DXX_HAVE_BOOST_ARRAY)
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#include <boost/array.hpp>
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using boost::array;
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#else
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#error "No <array> implementation found."
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#endif
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#endif
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#if defined(DXX_WANT_LENGTHOF) && !defined(DXX_INCLUDED_LENGTHOF)
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#define DXX_INCLUDED_LENGTHOF
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#ifdef DXX_HAVE_CXX11_FUNCTION_AUTO
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#include <cstddef>
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#ifdef DXX_HAVE_CXX11_EXPLICIT_DELETE
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template <typename T>
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static void array_identity(T) = delete;
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#endif
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template <typename T, std::size_t N>
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static auto array_identity(T (&t)[N]) -> T(&)[N] { return t; }
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#define lengthof(A) (sizeof((array_identity)(A)) / sizeof((A)[0]))
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#else
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#define lengthof(A) (sizeof((A)) / sizeof((A)[0]))
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#endif
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#endif
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#if defined(DXX_WANT_STATIC_ASSERT) && !defined(DXX_INCLUDED_STATIC_ASSERT)
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#define DXX_INCLUDED_STATIC_ASSERT
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#if defined(DXX_HAVE_BOOST_STATIC_ASSERT)
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#include <boost/static_assert.hpp>
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#define static_assert(C,M) BOOST_STATIC_ASSERT_MSG((C),M)
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#elif defined(DXX_HAVE_C_TYPEDEF_STATIC_ASSERT)
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#define static_assert(C,M) typedef int static_assertion_check[(C) ? 1 : -1];
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#endif
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#endif
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#if defined(DXX_WANT_RANGE_FOR) && !defined(DXX_INCLUDED_RANGE_FOR)
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#define DXX_INCLUDED_RANGE_FOR
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#if defined(DXX_HAVE_CXX11_RANGE_FOR)
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#define range_for(A,B) for(A:B)
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#elif defined(DXX_HAVE_BOOST_FOREACH)
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#include <boost/foreach.hpp>
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#define range_for BOOST_FOREACH
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#else
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#error "No range-based for implementation found."
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#endif
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#endif
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#if defined(DXX_WANT_TYPE_TRAITS) && !defined(DXX_INCLUDED_TYPE_TRAITS)
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#define DXX_INCLUDED_TYPE_TRAITS
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#if defined(DXX_HAVE_CXX11_TYPE_TRAITS)
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#include <type_traits>
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namespace tt = std;
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#elif defined(DXX_HAVE_BOOST_TYPE_TRAITS)
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#include <boost/type_traits.hpp>
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namespace tt = boost;
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#else
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#error "No <type_traits> implementation found."
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#endif
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#endif
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