VirtualRenderingSystem: staticassert.h Source File

00001 #ifndef VRS_STATIC_ASSERT_H
00002 #define VRS_STATIC_ASSERT_H
00003 
00004 #include <cassert>
00005 
00006 // copied from boost... http://www.boost.org
00007 
00008 namespace VRS {
00009     namespace STATIC_ASSERTION_NS {
00010         template <bool x> struct STATIC_ASSERTION_FAILURE;
00011         template <>       struct STATIC_ASSERTION_FAILURE<true> { enum { value = 1 }; };
00012         template<int x>   struct STATIC_ASSERTION_TEST { };
00013     } // namespace STATIC_ASSERTION_NS
00014 } // namespace VRS
00015 
00016 #define VRS_STATIC_ASSERT(EXPR) \
00017     typedef ::VRS::STATIC_ASSERTION_NS::STATIC_ASSERTION_TEST< \
00018         sizeof(::VRS::STATIC_ASSERTION_NS::STATIC_ASSERTION_FAILURE< (bool)(EXPR) >) \
00019     > vrs_static_assert_typedef_
00020 
00021 #endif // VRS_STATIC_ASSERT_H