56 lines
1.2 KiB
Rust
56 lines
1.2 KiB
Rust
// Copyright 2014 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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// Test using overloaded indexing when the "map" is stored in a
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// field. This caused problems at some point.
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use std::ops::Index;
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struct Foo {
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x: int,
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y: int,
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}
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struct Bar {
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foo: Foo
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}
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impl Index<int> for Foo {
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type Output = int;
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fn index(&self, z: &int) -> &int {
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if *z == 0 {
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&self.x
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} else {
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&self.y
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}
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}
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}
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trait Int {
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fn get(self) -> int;
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fn get_from_ref(&self) -> int;
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fn inc(&mut self);
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}
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impl Int for int {
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fn get(self) -> int { self }
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fn get_from_ref(&self) -> int { *self }
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fn inc(&mut self) { *self += 1; }
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}
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fn main() {
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let f = Bar { foo: Foo {
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x: 1,
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y: 2,
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} };
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assert_eq!(f.foo[1].get(), 2);
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}
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