+++ /dev/null
-use std::fmt;
-use std::any::Any as StdAny;
-
-#[cfg(feature = "clone")]
-#[doc(hidden)]
-pub trait CloneToAny {
- /// Clone `self` into a new `Box<Any>` object.
- fn clone_to_any(&self) -> Box<Any>;
-}
-
-#[cfg(feature = "clone")]
-impl<T: Any + Clone> CloneToAny for T {
- fn clone_to_any(&self) -> Box<Any> {
- Box::new(self.clone())
- }
-}
-
-macro_rules! define_any {
- (#[$m:meta] $t:item $i:item) => {
- /// A type to emulate dynamic typing.
- ///
- /// Every suitable type with no non-`'static` references implements `Any`. See the
- /// [`std::any` documentation](https://doc.rust-lang.org/std/any/index.html) for more
- /// details on `Any` in general.
- ///
- /// This trait is not `std::any::Any` but rather a type extending that for this library’s
- /// purposes; most specifically, there are a couple of Cargo features that can be enabled
- /// which will alter the constraints of what comprises a suitable type:
- ///
- /// <table>
- /// <thead>
- /// <tr>
- /// <th title="The name of the Cargo feature to enable">Feature name</th>
- /// <th title="If a type doesn’t satisfy these bounds, it won’t implement Any">Additional bounds</th>
- /// <th title="Were these docs built with this feature enabled?">Enabled in these docs?</th>
- /// </tr>
- /// </thead>
- /// <tbody>
- /// <tr>
- /// <th><code>clone</code></th>
- /// <td><code><a class=trait title=core::clone::Clone
- /// href=http://doc.rust-lang.org/std/clone/trait.Clone.html
- /// >Clone</a></code></td>
- #[cfg_attr(feature = "clone", doc = " <td>Yes</td>")]
- #[cfg_attr(not(feature = "clone"), doc = " <td>No</td>")]
- /// </tr>
- /// <tr>
- /// <th><code>concurrent</code></th>
- /// <td><code><a class=trait title=core::marker::Send
- /// href=http://doc.rust-lang.org/std/marker/trait.Send.html
- /// >Send</a> + <a class=trait title=core::marker::Sync
- /// href=http://doc.rust-lang.org/std/marker/trait.Sync.html
- /// >Sync</a></code></td>
- #[cfg_attr(feature = "concurrent", doc = " <td>Yes</td>")]
- #[cfg_attr(not(feature = "concurrent"), doc = " <td>No</td>")]
- /// </tr>
- /// </tbody>
- /// </table>
- #[$m] $t
- #[$m] $i
- }
-}
-
-define_any! {
- #[cfg(all(not(feature = "clone"), not(feature = "concurrent")))]
- pub trait Any: StdAny { }
- impl<T: StdAny> Any for T { }
-}
-
-define_any! {
- #[cfg(all(feature = "clone", not(feature = "concurrent")))]
- pub trait Any: StdAny + CloneToAny { }
- impl<T: StdAny + Clone> Any for T { }
-}
-
-define_any! {
- #[cfg(all(not(feature = "clone"), feature = "concurrent"))]
- pub trait Any: StdAny + Send + Sync { }
- impl<T: StdAny + Send + Sync> Any for T { }
-}
-
-define_any! {
- #[cfg(all(feature = "clone", feature = "concurrent"))]
- pub trait Any: StdAny + CloneToAny + Send + Sync { }
- impl<T: StdAny + Clone + Send + Sync> Any for T { }
-}
-
-#[cfg(feature = "clone")]
-impl Clone for Box<Any> {
- fn clone(&self) -> Box<Any> {
- (**self).clone_to_any()
- }
-}
-
-impl<'a> fmt::Debug for &'a Any {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- f.pad("&Any")
- }
-}
-
-impl<'a> fmt::Debug for Box<Any> {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- f.pad("Box<Any>")
- }
-}