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Add known_cast to type casts

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This commit is contained in:
Danny Robson 2012-06-20 16:48:40 +10:00
parent 8c5dd1eea1
commit 481f55a9c4
1 changed files with 17 additions and 0 deletions
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17
types/casts.hpp
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@ -117,4 +117,21 @@ size_cast (const V v) {
return static_cast<T> (v);
}
//-----------------------------------------------------------------------------
template <typename T, typename V>
T*
known_cast (V *v) {
CHECK_HARD (nullptr != dynamic_cast<T> (v));
return static_cast<T> (v);
}
template <typename T, typename V>
T&
known_cast (V &v) {
CHECK_NOTHROW (dynamic_cast<T> (v));
return static_cast<T> (v);
}
#endif