Saaa wrote:
My first stab at the get function.
As you might see, I need help :D
Thanks!
How do I make the function take a variadic argument and get its type?
void get(in char[][] file, in char[] identifier, ...)
{
TypeInfo type = _arguments[0];
void* var = _argptr;
// etc
}
void get(in char[][] file, in char[] indentifier, void* var)
{
TypeInfo type = typeof(var);
int row;
// Is it possible to check it is an array, no matter the depth?
If you use tango:
import tango.core.RuntimeTraits;
if (isArray(type)) {}
Otherwise, just copy the code from RuntimeTraits. The functions you
would need are: realType, isStaticArray, isDynamicArray, isArray
if ( !( type == typeid(int) || type == typeid(int[][]) ) ) // || etc
{
throw new exception;
//which kind of exception should I throw?
Define your own exception type.
//what is the prototype of a function which has a variadic return type?
"Variadic" means that the function can take any number of arguments.
Use Variant, from std.variant or tango.core.Variant. It's typesafe. You
could also return a void*, but that will require allocation.
var = parse(file, row, type, identifier);
//can all types hold null?
If you use Variant, you can check isEmpty / hasValue or some such.
