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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#ifndef SHARE_UTILITIES_CHECKEDCAST_HPP
#define SHARE_UTILITIES_CHECKEDCAST_HPP

#include "utilities/debug.hpp"

// In many places we've added C-style casts to silence compiler
// warnings, for example when truncating a size_t to an int when we
// know the size_t is a small struct. Such casts are risky because
// they effectively disable useful compiler warnings. We can make our
// lives safer with this function, which ensures that any cast is
// reversible without loss of information. It doesn't check
// everything: it isn't intended to make sure that pointer types are
// compatible, for example.
template <typename T2, typename T1>
constexpr T2 checked_cast(T1 thing) {
  T2 result = static_cast<T2>(thing);
  assert(static_cast<T1>(result) == thing, "must be");
  return result;
}

#endif // SHARE_UTILITIES_CHECKEDCAST_HPP