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authorHampusM <hampus@hampusmat.com>2023-12-25 22:53:13 +0100
committerHampusM <hampus@hampusmat.com>2023-12-28 12:00:11 +0100
commit607d8d50b76665b67ca6f3124aa81773bec110b7 (patch)
tree142a7c17c4e254eabd5a5396975921bca1869bec /src/private/cast/boxed.rs
parentc501a5cc770f632eba1529de09bd3ae2d7958de6 (diff)
WIP Linkme dependency removalwithout-linkme
Diffstat (limited to 'src/private/cast/boxed.rs')
-rw-r--r--src/private/cast/boxed.rs87
1 files changed, 0 insertions, 87 deletions
diff --git a/src/private/cast/boxed.rs b/src/private/cast/boxed.rs
deleted file mode 100644
index 074346c..0000000
--- a/src/private/cast/boxed.rs
+++ /dev/null
@@ -1,87 +0,0 @@
-//! Originally from Intertrait by CodeChain
-//!
-//! <https://github.com/CodeChain-io/intertrait>
-//! <https://crates.io/crates/intertrait/0.2.2>
-//!
-//! Licensed under either of
-//!
-//! Apache License, Version 2.0 (LICENSE-APACHE or <http://www.apache.org/licenses/LICENSE-2.0>)
-//! MIT license (LICENSE-MIT or <http://opensource.org/licenses/MIT>)
-//!
-//! at your option.
-
-use std::any::type_name;
-
-use crate::private::cast::error::CastError;
-use crate::private::cast::{get_caster, CastFrom};
-
-pub trait CastBox
-{
- /// Casts a `Box` with `Self` into a `Box` with `Dest`.
- fn cast<Dest: ?Sized + 'static>(self: Box<Self>) -> Result<Box<Dest>, CastError>;
-}
-
-/// A blanket implementation of `CastBox` for traits extending `CastFrom`.
-impl<CastFromSelf: ?Sized + CastFrom> CastBox for CastFromSelf
-{
- fn cast<Dest: ?Sized + 'static>(self: Box<Self>) -> Result<Box<Dest>, CastError>
- {
- let caster =
- get_caster::<Dest>((*self).type_id()).map_err(CastError::GetCasterFailed)?;
-
- (caster.cast_box)(self.box_any()).map_err(|err| CastError::CastFailed {
- source: err,
- from: type_name::<Self>(),
- to: type_name::<Dest>(),
- })
- }
-}
-
-#[cfg(test)]
-mod tests
-{
- use std::any::Any;
- use std::fmt::{Debug, Display};
-
- use super::*;
- use crate::test_utils::subjects;
-
- #[test]
- fn can_cast_box()
- {
- let concrete_ninja = Box::new(subjects::Ninja);
-
- let abstract_ninja: Box<dyn subjects::INinja> = concrete_ninja;
-
- let debug_ninja_result = abstract_ninja.cast::<dyn Debug>();
-
- assert!(debug_ninja_result.is_ok());
- }
-
- #[test]
- fn cannot_cast_box_wrong()
- {
- let concrete_ninja = Box::new(subjects::Ninja);
-
- let abstract_ninja: Box<dyn subjects::INinja> = concrete_ninja;
-
- let display_ninja_result = abstract_ninja.cast::<dyn Display>();
-
- assert!(matches!(
- display_ninja_result,
- Err(CastError::GetCasterFailed(_))
- ));
- }
-
- #[test]
- fn can_cast_box_from_any()
- {
- let concrete_ninja = Box::new(subjects::Ninja);
-
- let any_ninja: Box<dyn Any> = concrete_ninja;
-
- let debug_ninja_result = any_ninja.cast::<dyn Debug>();
-
- assert!(debug_ninja_result.is_ok());
- }
-}