b4bbf3a88d
Also change several error messages to refer to "items" rather than "methods", since associated items that require resolution during type checking are not always methods.
65 lines
1.3 KiB
Rust
65 lines
1.3 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(box_syntax)]
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trait noisy {
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fn speak(&self);
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}
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struct cat {
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meows : usize,
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how_hungry : isize,
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name : String,
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}
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impl cat {
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pub fn eat(&self) -> bool {
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if self.how_hungry > 0 {
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println!("OM NOM NOM");
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self.how_hungry -= 2;
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return true;
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}
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else {
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println!("Not hungry!");
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return false;
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}
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}
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}
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impl noisy for cat {
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fn speak(&self) { self.meow(); }
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}
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impl cat {
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fn meow(&self) {
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println!("Meow");
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self.meows += 1;
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if self.meows % 5 == 0 {
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self.how_hungry += 1;
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}
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}
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}
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fn cat(in_x : usize, in_y : isize, in_name: String) -> cat {
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cat {
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meows: in_x,
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how_hungry: in_y,
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name: in_name
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}
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}
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fn main() {
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let nyan: Box<noisy> = box cat(0, 2, "nyan".to_string()) as Box<noisy>;
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nyan.eat(); //~ ERROR no method named `eat` found
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}
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