Rory McGuire <rmcgu...@neonova.co.za> wrote:
Does anyone know how to detect if there is a setter for a property? The
code below prints the same thing for both
the setter and the getter of "front":
==============================
import std.traits;
class Foo {
uint num;
@property ref uint front() {
return num;
}
@property void front(uint i) {
num = i;
}
ref uint front2() {
return num;
}
}
template isProperty(alias func) if (isCallable!(func)) {
enum isProperty = (functionAttributes!(func) &
FunctionAttribute.PROPERTY)==0 ? false : true;
}
template hasSetter(alias func) if (isCallable!(func)) {
enum hasSetter = (isProperty!(func) && ParameterTypeTuple!(func).length
>
0 && ReturnType!(func).stringof != "void") ? true : false;
}
For what it's worth, I would simply check if the property allows
assignment. i.e.:
template hasSetter(alias func) if (isCallable!(func)) {
enum hasSetter = isProperty!(func) &&
is( typeof( (){ func = ReturnType!(func).init; } ) );
}
--
Simen
