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openmw/components/misc/finitenumbers.hpp

53 lines
1.2 KiB
C++

#ifndef OPENMW_COMPONENTS_MISC_FINITENUMBERS_HPP
#define OPENMW_COMPONENTS_MISC_FINITENUMBERS_HPP
#include <components/lua/luastate.hpp>
#include <cmath>
#include <stdexcept>
#include <utility>
namespace Misc
{
template <class T>
struct FiniteNumber
{
T mValue;
FiniteNumber(T v)
{
if (!std::isfinite(v))
throw std::invalid_argument("Value must be a finite number");
mValue = v;
}
operator T() const { return mValue; }
};
using FiniteDouble = FiniteNumber<double>;
using FiniteFloat = FiniteNumber<float>;
}
namespace sol
{
template <class Handler, class T>
bool sol_lua_check(
types<Misc::FiniteNumber<T>>, lua_State* state, int index, Handler&& handler, stack::record& tracking)
{
bool success = stack::check<T>(state, lua_absindex(state, index), std::forward<Handler>(handler));
tracking.use(1);
return success;
}
template <class T>
static Misc::FiniteNumber<T> sol_lua_get(
types<Misc::FiniteNumber<T>>, lua_State* state, int index, stack::record& tracking)
{
T value = stack::get<T>(state, lua_absindex(state, index));
tracking.use(1);
return value;
}
}
#endif