62 lines
1.1 KiB
C++
62 lines
1.1 KiB
C++
|
#ifndef _library__exrethrow__hpp__included__
|
||
|
|
#define _library__exrethrow__hpp__included__
|
||
|
|
|
||
|
|
#include <stdexcept>
|
||
|
|
#include <functional>
|
||
|
|
|
||
|
|
namespace exrethrow
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* Add a exception type.
|
||
|
|
*/
|
||
|
|
void add_ex_spec(unsigned prio, std::function<bool(std::exception& e)> identify,
|
||
|
|
std::function<void()> (*throwfn)(std::exception& e));
|
||
|
|
std::function<void()> get_throw_fn(std::exception& e);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Exception type specifier.
|
||
|
|
*/
|
||
|
|
template<typename T, unsigned prio> class ex_spec
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
ex_spec()
|
||
|
|
{
|
||
|
|
add_ex_spec(prio, [](std::exception& e) -> bool { return (dynamic_cast<T*>(&e) != NULL); },
|
||
|
|
[](std::exception& e) -> std::function<void()> { T _ex = *dynamic_cast<T*>(&e);
|
||
|
|
return [_ex]() -> void { throw _ex; }; });
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Exception storage
|
||
|
|
*/
|
||
|
|
class storage
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
/**
|
||
|
|
* Null object.
|
||
|
|
*/
|
||
|
|
storage();
|
||
|
|
/**
|
||
|
|
* Store an exception.
|
||
|
|
*
|
||
|
|
* Parameter e: The exception.
|
||
|
|
*/
|
||
|
|
storage(std::exception& e);
|
||
|
|
/**
|
||
|
|
* Rethrow the exception.
|
||
|
|
*/
|
||
|
|
void rethrow();
|
||
|
|
/**
|
||
|
|
* Is anything here?
|
||
|
|
*/
|
||
|
|
operator bool();
|
||
|
|
private:
|
||
|
|
bool null;
|
||
|
|
bool oom;
|
||
|
|
std::function<void()> do_rethrow;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|