rust/src/test/run-pass/anon-obj-cats.rs

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2011-08-09 17:42:48 -05:00
fn main() {
// The Internet made me do it.
obj cat() {
fn ack() -> str {
ret "ack";
}
fn meow() -> str {
ret "meow";
}
fn zzz() -> str {
ret self.meow();
}
}
let shortcat = cat();
let longcat = obj() {
fn lol() -> str {
ret "lol";
}
fn nyan() -> str {
ret "nyan";
}
with shortcat
};
let longercat = obj() {
fn meow() -> str {
ret "zzz";
}
with shortcat
};
let evenlongercat = obj() {
fn meow() -> str {
ret "zzzzzz";
}
with longercat
};
// Tests self-call.
assert (shortcat.zzz() == "meow");
// Tests forwarding/backwarding + self-call.
assert (longcat.zzz() == "meow");
// Tests forwarding/backwarding + self-call + override.
assert (longercat.zzz() == "zzz");
// Tests two-level forwarding/backwarding + self-call + override.
assert (evenlongercat.zzz() == "zzzzzz");
}