b53454e2e4
This commit moves reflection (as well as the {:?} format modifier) to a new
libdebug crate, all of which is marked experimental.
This is a breaking change because it now requires the debug crate to be
explicitly linked if the :? format qualifier is used. This means that any code
using this feature will have to add `extern crate debug;` to the top of the
crate. Any code relying on reflection will also need to do this.
Closes #12019
[breaking-change]
38 lines
982 B
Rust
38 lines
982 B
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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extern crate debug;
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trait IDummy {
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fn do_nothing(&self);
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}
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struct A { a: int }
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struct B<'a> { b: int, pa: &'a A }
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impl IDummy for A {
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fn do_nothing(&self) {
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println!("A::do_nothing() is called");
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}
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}
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impl<'a> B<'a> {
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fn get_pa(&self) -> &'a IDummy { self.pa as &'a IDummy }
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}
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pub fn main() {
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let sa = A { a: 100 };
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let sb = B { b: 200, pa: &sa };
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println!("sa is {:?}", sa);
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println!("sb is {:?}", sb);
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println!("sb.pa is {:?}", sb.get_pa());
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}
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