70f7165cc8
This commit aims to stabilize the `TypeId` abstraction by moving it out of the `intrinsics` module into the `any` module of the standard library. Specifically, * `TypeId` is now defined at `std::any::TypeId` * `TypeId::hash` has been removed in favor of an implementation of `Hash`. This commit also performs a final pass over the `any` module, confirming the following: * `Any::get_type_id` remains unstable as *usage* of the `Any` trait will likely never require this, and the `Any` trait does not need to be implemented for any other types. As a result, this implementation detail can remain unstable until associated statics are implemented. * `Any::downcast_ref` is now stable * `Any::downcast_mut` is now stable * `BoxAny` remains unstable. While a direct impl on `Box<Any>` is allowed today it does not allow downcasting of trait objects like `Box<Any + Send>` (those returned from `Thread::join`). This is covered by #18737. * `BoxAny::downcast` is now stable.
32 lines
988 B
Rust
32 lines
988 B
Rust
// Copyright 2015 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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use core::any::TypeId;
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#[test]
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fn test_typeid_sized_types() {
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struct X; struct Y(uint);
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assert_eq!(TypeId::of::<X>(), TypeId::of::<X>());
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assert_eq!(TypeId::of::<Y>(), TypeId::of::<Y>());
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assert!(TypeId::of::<X>() != TypeId::of::<Y>());
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}
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#[test]
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fn test_typeid_unsized_types() {
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trait Z {}
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struct X(str); struct Y(Z + 'static);
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assert_eq!(TypeId::of::<X>(), TypeId::of::<X>());
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assert_eq!(TypeId::of::<Y>(), TypeId::of::<Y>());
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assert!(TypeId::of::<X>() != TypeId::of::<Y>());
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}
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