58 lines
1.0 KiB
Rust
58 lines
1.0 KiB
Rust
// Sanity-check the code examples that appear in the object system
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// documentation.
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use std;
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import comm::chan;
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import comm::send;
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import comm::port;
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fn main() {
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// Ref.Item.Obj
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obj counter(state: @mutable int) {
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fn incr() { *state += 1; }
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fn get() -> int { ret *state; }
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}
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let c: counter = counter(@mutable 1);
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c.incr();
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c.incr();
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assert (c.get() == 3);
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obj my_obj() {
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fn get() -> int { ret 3; }
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fn foo() -> int {
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let c = self.get();
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ret c + 2; // returns 5
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}
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}
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let o = my_obj();
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assert (o.foo() == 5);
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// Ref.Type.Obj
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type taker =
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obj {
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fn take(int);
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};
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obj adder(x: @mutable int) {
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fn take(y: int) { *x += y; }
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}
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obj sender(c: chan<int>) {
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fn take(z: int) { send(c, copy z); }
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}
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fn give_ints(t: taker) { t.take(1); t.take(2); t.take(3); }
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let p = port();
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let t1: taker = adder(@mutable 0);
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let t2: taker = sender(chan(p));
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give_ints(t1);
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give_ints(t2);
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}
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