41 lines
846 B
Rust
41 lines
846 B
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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struct foo {
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z: Option<@Invokable>,
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}
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struct Thing {
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w: @mut foo,
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}
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trait Invokable {
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fn f(&self);
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}
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impl Invokable for Thing {
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fn f(&self) {
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nop_foo(self.w);
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}
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}
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fn nop() { }
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fn nop_foo(_x : @mut foo) { }
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pub fn main() {
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let w = @mut foo {
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z: None,
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};
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let x = @Thing {
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w: w,
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} as @Invokable;
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w.z = Some(x);
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}
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