On Friday, 14 February 2014 at 03:48:13 UTC, Uranuz wrote:
{ if( exc.inheritsOrIs(type) ) //Checking type of
This function is basically the same as the cast function in
druntime. Look for _d_isbaseof in the file
dmd2/src/druntime/src/rt
https://github.com/D-Programming-Language/druntime/blob/master/src/rt/cast_.d#L115
You could literally call that function:
class Foo {}
class Bar : Foo {}
class Baz : Bar {}
class Test {}
// declare the function so we can access it (as an internal
druntime
// function, thee is no import to provide it, but we can call it
anyway)
extern(C) int _d_isbaseof(ClassInfo oc, ClassInfo c);
void main() {
Foo f = new Bar;
Foo z = new Baz;
import std.stdio;
// here's how to use it. f is a Bar which is a Foo, but
not a Baz
writeln(typeid(f)._d_isbaseof(typeid(Bar))); // 1
writeln(typeid(f)._d_isbaseof(typeid(Baz))); // 0
writeln(typeid(f)._d_isbaseof(typeid(Test))); // 0
// z is a Baz which is a Bar and a Baz
writeln(typeid(z)._d_isbaseof(typeid(Bar))); // 1
writeln(typeid(z)._d_isbaseof(typeid(Baz))); // 1
}
typeid is the same as classinfo, it just gets that info. So the
left side in your case would be the exception, and the right side
would be the key in your associative array.
If it returns one, you have a match and can do ahead and call it.
