Cast
Contains functions to help casting pointers to Tokens using dynamic_cast. Helpful for dealing with different overloads in Registrables. For example, suppose we have the following Registrable that is supposed to take up to three integers.
ZHETAPI_REGISTRABLE(my_registrable)
{
OpZ o1, o2, o3;
// Performing overload switching with zhetapi_cast (should be used for very
// specific or seemingly random overloads)
if (zhetapi_cast(inputs, o1, o2, o3)) {
// do the function for three integers (o1, o2, o3)
} else if (zhetapi_cast(inputs, o1, o2)) {
// do the function for two integers (o1, o2)
} else if (zhetapi_cast(inputs, o1)) {
// do the function for two integers (o1)
} else {
// Terminating branch...
}
// ...or use zhetapi_cc_cast (should be used for sequences of partial
// overloads)
switch (zhetapi_cc_cast(inputs, o1, o2, o3)) {
case 3:
// do the function for three integers (o1, o2, o3)
case 2:
// do the function for two integers (o1, o2)
case 1:
// do the function for one integer (o1)
default:
break;
}
// As the terminating action either
return nullptr;
// ...or throw
throw my_exception();
}
-
namespace zhetapi