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#ifndef ERR_H
#define ERR_H
#include <exception>
#include <string>
#include "win32.h"
enum ErrType : unsigned char
{
GENERIC,
WINDOWS,
WININET,
LIBXML2
};
struct Err
{
std::wstring what;
Err(ErrType t, const wchar_t* fmt = L"%s.");
inline Err(ErrType t, std::wstring fmt) : Err(t, fmt.c_str()) {}
};
/* Return a wide string describing exception. */
std::wstring What(std::exception_ptr e = std::current_exception());
/* Exit gracefully on uncaught exception. */
void OnTerminate();
/* Exception-catching version of F that warns on exception. */
template <auto F>
auto Except = (decltype(F))[](auto... xs)
{
try {
return F(xs...);
} catch (...) {
EBMessageBox(What(), L"Error");
if constexpr (!std::is_same_v<decltype(F(xs...)), void>)
return decltype(F(xs...)){};
}
};
/* Exception-catching version of F that exits on exception. */
template <auto F>
auto Noexcept = (decltype(F))[](auto... xs)
{
try {
return F(xs...);
} catch (...) {
EBMessageBox(What(), L"Fatal Error", MB_ICONERROR);
exit(1);
if constexpr (!std::is_same_v<decltype(F(xs...)), void>)
return decltype(F(xs...)){};
}
};
#endif
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