rust/src/test/run-pass/class-impl-parameterized-iface.rs

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// xfail-test
// xfail-fast
use std;
import std::map::*;
class cat : map<int, bool> {
priv {
// Yes, you can have negative meows
let mut meows : int;
fn meow() {
self.meows += 1;
#error("Meow %d", self.meows);
if self.meows % 5 == 0 {
self.how_hungry += 1;
}
}
}
let mut how_hungry : int;
let name : str;
new(in_x : int, in_y : int, in_name: str)
{ self.meows = in_x; self.how_hungry = in_y; self.name = in_name; }
fn speak() { self.meow(); }
fn eat() -> bool {
if self.how_hungry > 0 {
#error("OM NOM NOM");
self.how_hungry -= 2;
ret true;
}
else {
#error("Not hungry!");
ret false;
}
}
fn size() -> uint { self.meows as uint }
fn insert(+k: int, +v: bool) -> bool {
if v { self.meows += k; } else { self.meows -= k; };
true
}
fn contains_key(&&k: int) -> bool { k <= self.meows }
fn get(&&k:int) -> bool { k <= self.meows }
fn [](&&k:int) -> bool { k <= self.meows }
fn find(&&k:int) -> option<bool> { some(self.get(k)) }
fn remove(&&k:int) -> option<bool> { self.meows -= k; some(true) }
fn each(f: fn(&&int, &&bool) -> bool) {
let mut n = int::abs(self.meows);
while n > 0 {
if !f(n, true) { break; }
n -= 1;
}
}
fn each_key(&&f: fn(&&int) -> bool) {
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for self.each |k, _v| { if !f(k) { break; } cont;};
}
fn each_value(&&f: fn(&&bool) -> bool) {
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for self.each |_k, v| { if !f(v) { break; } cont;};
}
}
fn main() {
let nyan : cat = cat(0, 2, "nyan");
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for uint::range(1u, 5u) |_i| { nyan.speak(); }
// cat returns true if uint input is greater than
// the number of meows so far
assert(nyan.get(1));
assert(!nyan.get(10));
}