Troublemaker dmd 2.061 - Templates?
David
d at dav1d.de
Sat Jan 5 10:45:25 PST 2013
LOL
mixin template get_packets_mixin(alias Module) {
template get_packets() {
alias NoDuplicates!(get_packets_impl!(get_members!())) get_packets;
}
template get_members() {
alias TypeTuple!(__traits(allMembers, Module)) get_members;
}
private template get_packets_impl(T...) {
static if(__traits(compiles, mixin(T[0]).id)) {
// pragma(msg, PacketTuple!(mixin(T[0]), mixin(T[0]).id));
// pragma(msg, get_packets_impl!(T[1..$]));
alias TypeTuple!(PacketTuple!(mixin(T[0]), mixin(T[0]).id),
get_packets_impl!(T[1..$])) get_packets_impl;
} else {
// pragma(msg, get_packets_impl!(T[1..$])); // <----------
alias TypeTuple!(get_packets_impl!(T[1..$])) get_packets_impl;
}
}
private template get_packets_impl() {
alias TypeTuple!() get_packets_impl;
}
template PacketTuple(T, ubyte b) {
alias T cls;
alias b id;
}
auto parse_packet(ubyte id)(Stream s) {
alias staticIndexOf!(id, staticMap!(extract_id, get_packets!()))
id_index;
static if(id_index < 0) {
static assert(false, "Invalid packet with id: " ~
toStringNow!id);
} else {
return get_packets!()[id_index].cls.recv(s);
}
}
pragma(msg, get_packets_impl!(__traits(allMembers, Module)));
}
With this pragma: "pragma(msg, get_packets_impl!(T[1..$]));"
outcommented, I get _error_, but if I let it in, everything compiles.
I have no idea if I should laugh or cry.
More information about the Digitalmars-d-learn
mailing list