refactor: reorganize non-public API items

9 files changed, 0 insertions, 785 deletions

diff --git a/src/libs/intertrait/LICENSE-APACHE b/src/libs/intertrait/LICENSE-APACHE
deleted file mode 100644
index d9a10c0..0000000
--- a/src/libs/intertrait/LICENSE-APACHE
+++ /dev/null
@@ -1,176 +0,0 @@
-                                 Apache License
-                           Version 2.0, January 2004
-                        http://www.apache.org/licenses/
-
-   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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diff --git a/src/libs/intertrait/LICENSE-MIT b/src/libs/intertrait/LICENSE-MIT
deleted file mode 100644
index 969d061..0000000
--- a/src/libs/intertrait/LICENSE-MIT
+++ /dev/null
@@ -1,17 +0,0 @@
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
diff --git a/src/libs/intertrait/cast/arc.rs b/src/libs/intertrait/cast/arc.rs
deleted file mode 100644
index a1b2c30..0000000
--- a/src/libs/intertrait/cast/arc.rs
+++ /dev/null
@@ -1,93 +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 std::sync::Arc;
-
-use crate::libs::intertrait::cast::error::CastError;
-use crate::libs::intertrait::{get_caster, CastFromSync};
-
-pub trait CastArc
-{
-    /// Casts an `Arc` with `Self` into an `Arc` with `Dest`.
-    fn cast<Dest: ?Sized + 'static>(self: Arc<Self>) -> Result<Arc<Dest>, CastError>;
-}
-
-/// A blanket implementation of `CastArc` for traits extending `CastFrom`, `Sync`, and
-/// `Send`.
-impl<CastFromSelf: ?Sized + CastFromSync> CastArc for CastFromSelf
-{
-    fn cast<Dest: ?Sized + 'static>(self: Arc<Self>) -> Result<Arc<Dest>, CastError>
-    {
-        let caster =
-            get_caster::<Dest>((*self).type_id()).map_err(CastError::GetCasterFailed)?;
-
-        let cast_arc = caster
-            .opt_cast_arc
-            .ok_or(CastError::NotArcCastable(type_name::<Dest>()))?;
-
-        cast_arc(self.arc_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 std::sync::Arc;
-
-    use super::*;
-    use crate::test_utils::subjects;
-
-    #[test]
-    fn can_cast_arc()
-    {
-        let concrete_ninja = Arc::new(subjects::Ninja);
-
-        let abstract_ninja: Arc<dyn subjects::INinja> = concrete_ninja;
-
-        let debug_ninja_result = abstract_ninja.cast::<dyn Debug>();
-
-        assert!(debug_ninja_result.is_ok());
-    }
-
-    #[test]
-    fn cannot_cast_arc_wrong()
-    {
-        let concrete_ninja = Arc::new(subjects::Ninja);
-
-        let abstract_ninja: Arc<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_arc_from_any()
-    {
-        let concrete_ninja = Arc::new(subjects::Ninja);
-
-        let any_ninja: Arc<dyn Any + Send + Sync> = concrete_ninja;
-
-        let debug_ninja_result = any_ninja.cast::<dyn Debug>();
-
-        assert!(debug_ninja_result.is_ok());
-    }
-}
diff --git a/src/libs/intertrait/cast/box.rs b/src/libs/intertrait/cast/box.rs
deleted file mode 100644
index fcd5f70..0000000
--- a/src/libs/intertrait/cast/box.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::libs::intertrait::cast::error::CastError;
-use crate::libs::intertrait::{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());
-    }
-}
diff --git a/src/libs/intertrait/cast/error.rs b/src/libs/intertrait/cast/error.rs
deleted file mode 100644
index d253fc5..0000000
--- a/src/libs/intertrait/cast/error.rs
+++ /dev/null
@@ -1,20 +0,0 @@
-use crate::libs::intertrait::{CasterError, GetCasterError};
-
-#[derive(thiserror::Error, Debug)]
-pub enum CastError
-{
-    #[error("Failed to get caster")]
-    GetCasterFailed(#[from] GetCasterError),
-
-    #[error("Failed to cast from {from} to {to}")]
-    CastFailed
-    {
-        #[source]
-        source: CasterError,
-        from: &'static str,
-        to: &'static str,
-    },
-
-    #[error("'{0}' can't be cast to an Arc")]
-    NotArcCastable(&'static str),
-}
diff --git a/src/libs/intertrait/cast/mod.rs b/src/libs/intertrait/cast/mod.rs
deleted file mode 100644
index a0342cf..0000000
--- a/src/libs/intertrait/cast/mod.rs
+++ /dev/null
@@ -1,20 +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.
-pub mod error;
-
-mod arc;
-mod r#box;
-mod rc;
-
-pub use arc::*;
-pub use r#box::*;
-pub use rc::*;
diff --git a/src/libs/intertrait/cast/rc.rs b/src/libs/intertrait/cast/rc.rs
deleted file mode 100644
index 8567d1e..0000000
--- a/src/libs/intertrait/cast/rc.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 std::rc::Rc;
-
-use crate::libs::intertrait::cast::error::CastError;
-use crate::libs::intertrait::{get_caster, CastFrom};
-
-pub trait CastRc
-{
-    /// Casts an `Rc` with `Self `into a `Rc` with `Dest`.
-    fn cast<Dest: ?Sized + 'static>(self: Rc<Self>) -> Result<Rc<Dest>, CastError>;
-}
-
-/// A blanket implementation of `CastRc` for traits extending `CastFrom`.
-impl<CastFromSelf: ?Sized + CastFrom> CastRc for CastFromSelf
-{
-    fn cast<Dest: ?Sized + 'static>(self: Rc<Self>) -> Result<Rc<Dest>, CastError>
-    {
-        let caster =
-            get_caster::<Dest>((*self).type_id()).map_err(CastError::GetCasterFailed)?;
-
-        (caster.cast_rc)(self.rc_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_rc()
-    {
-        let concrete_ninja = Rc::new(subjects::Ninja);
-
-        let abstract_ninja: Rc<dyn subjects::INinja> = concrete_ninja;
-
-        let debug_ninja_result = abstract_ninja.cast::<dyn Debug>();
-
-        assert!(debug_ninja_result.is_ok());
-    }
-
-    #[test]
-    fn cannot_cast_rc_wrong()
-    {
-        let concrete_ninja = Rc::new(subjects::Ninja);
-
-        let abstract_ninja: Rc<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_rc_from_any()
-    {
-        let concrete_ninja = Rc::new(subjects::Ninja);
-
-        let any_ninja: Rc<dyn Any> = concrete_ninja;
-
-        let debug_ninja_result = any_ninja.cast::<dyn Debug>();
-
-        assert!(debug_ninja_result.is_ok());
-    }
-}
diff --git a/src/libs/intertrait/mod.rs b/src/libs/intertrait/mod.rs
deleted file mode 100644
index d2ace67..0000000
--- a/src/libs/intertrait/mod.rs
+++ /dev/null
@@ -1,282 +0,0 @@
-//! A library providing direct casting among trait objects implemented by a type.
-//!
-//! In Rust, an object of a sub-trait of [`Any`] can be downcast to a concrete type
-//! at runtime if the type is known. But no direct casting between two trait objects
-//! (i.e. without involving the concrete type of the backing value) is possible
-//! (even no coercion from a trait object to that of its super-trait yet).
-//!
-//! With this crate, any trait object with [`CastFrom`] as its super-trait can be cast
-//! directly to another trait object implemented by the underlying type if the target
-//! traits are registered beforehand with the macros provided by this crate.
-//!
-//!
-//! 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::{Any, TypeId};
-use std::rc::Rc;
-use std::sync::Arc;
-
-use ahash::AHashMap;
-use linkme::distributed_slice;
-use once_cell::sync::Lazy;
-
-pub mod cast;
-
-pub type BoxedCaster = Box<dyn Any + Send + Sync>;
-
-/// A distributed slice gathering constructor functions for [`Caster`]s.
-///
-/// A constructor function returns `TypeId` of a concrete type involved in the casting
-/// and a `Box` of a type or trait backed by a [`Caster`].
-#[distributed_slice]
-pub static CASTERS: [fn() -> (TypeId, BoxedCaster)] = [..];
-
-/// A `HashMap` mapping `TypeId` of a [`Caster`] to an instance of it.
-static CASTER_MAP: Lazy<AHashMap<(TypeId, TypeId), BoxedCaster>> = Lazy::new(|| {
-    CASTERS
-        .iter()
-        .map(|caster_fn| {
-            let (type_id, caster) = caster_fn();
-
-            ((type_id, (*caster).type_id()), caster)
-        })
-        .collect()
-});
-
-type CastBoxFn<Dest> = fn(from: Box<dyn Any>) -> Result<Box<Dest>, CasterError>;
-
-type CastRcFn<Dest> = fn(from: Rc<dyn Any>) -> Result<Rc<Dest>, CasterError>;
-
-type CastArcFn<Dest> =
-    fn(from: Arc<dyn Any + Sync + Send + 'static>) -> Result<Arc<Dest>, CasterError>;
-
-/// A `Caster` knows how to cast a type or trait to the type or trait `Dest`. Each
-/// `Caster` instance is specific to a concrete type. That is, it knows how to cast to
-/// single specific type or trait implemented by single specific type.
-pub struct Caster<Dest: ?Sized + 'static>
-{
-    /// Casts a `Box` holding a type or trait object for `Any` to another `Box` holding a
-    /// type or trait `Dest`.
-    pub cast_box: CastBoxFn<Dest>,
-
-    /// Casts an `Rc` holding a type or trait for `Any` to another `Rc` holding a type or
-    /// trait `Dest`.
-    pub cast_rc: CastRcFn<Dest>,
-
-    /// Casts an `Arc` holding a type or trait for `Any + Sync + Send + 'static` to
-    /// another `Arc` holding a type or trait for `Dest`.
-    pub opt_cast_arc: Option<CastArcFn<Dest>>,
-}
-
-impl<Dest: ?Sized + 'static> Caster<Dest>
-{
-    pub fn new(cast_box: CastBoxFn<Dest>, cast_rc: CastRcFn<Dest>) -> Caster<Dest>
-    {
-        Caster::<Dest> {
-            cast_box,
-            cast_rc,
-            opt_cast_arc: None,
-        }
-    }
-
-    #[allow(clippy::similar_names)]
-    pub fn new_sync(
-        cast_box: CastBoxFn<Dest>,
-        cast_rc: CastRcFn<Dest>,
-        cast_arc: CastArcFn<Dest>,
-    ) -> Caster<Dest>
-    {
-        Caster::<Dest> {
-            cast_box,
-            cast_rc,
-            opt_cast_arc: Some(cast_arc),
-        }
-    }
-}
-
-#[derive(Debug, thiserror::Error)]
-pub enum CasterError
-{
-    #[error("Failed to cast Box")]
-    CastBoxFailed,
-
-    #[error("Failed to cast Rc")]
-    CastRcFailed,
-
-    #[error("Failed to cast Arc")]
-    CastArcFailed,
-}
-
-/// Returns a `Caster<Dest>` from a concrete type with the id `type_id` to a type or trait
-/// `Dest`.
-fn get_caster<Dest: ?Sized + 'static>(
-    type_id: TypeId,
-) -> Result<&'static Caster<Dest>, GetCasterError>
-{
-    let any_caster = CASTER_MAP
-        .get(&(type_id, TypeId::of::<Caster<Dest>>()))
-        .ok_or(GetCasterError::NotFound)?;
-
-    any_caster
-        .downcast_ref::<Caster<Dest>>()
-        .ok_or(GetCasterError::DowncastFailed)
-}
-
-#[derive(Debug, thiserror::Error)]
-pub enum GetCasterError
-{
-    #[error("Caster not found")]
-    NotFound,
-
-    #[error("Failed to downcast caster")]
-    DowncastFailed,
-}
-
-/// `CastFrom` must be extended by a trait that wants to allow for casting into another
-/// trait.
-///
-/// It is used for obtaining a trait object for [`Any`] from a trait object for its
-/// sub-trait, and blanket implemented for all `Sized + Any + 'static` types.
-///
-/// # Examples
-/// ```ignore
-/// trait Source: CastFrom {
-///     ...
-/// }
-/// ```
-pub trait CastFrom: Any + 'static
-{
-    /// Returns a `Box` of `Any`, which is backed by the type implementing this trait.
-    fn box_any(self: Box<Self>) -> Box<dyn Any>;
-
-    /// Returns an `Rc` of `Any`, which is backed by the type implementing this trait.
-    fn rc_any(self: Rc<Self>) -> Rc<dyn Any>;
-}
-
-/// `CastFromSync` must be extended by a trait that is `Any + Sync + Send + 'static`
-/// and wants to allow for casting into another trait behind references and smart pointers
-/// especially including `Arc`.
-///
-/// It is used for obtaining a trait object for [`Any + Sync + Send + 'static`] from an
-/// object for its sub-trait, and blanket implemented for all `Sized + Sync + Send +
-/// 'static` types.
-///
-/// # Examples
-/// ```ignore
-/// trait Source: CastFromSync {
-///     ...
-/// }
-/// ```
-pub trait CastFromSync: CastFrom + Sync + Send + 'static
-{
-    fn arc_any(self: Arc<Self>) -> Arc<dyn Any + Sync + Send + 'static>;
-}
-
-impl<Source: Sized + Any + 'static> CastFrom for Source
-{
-    fn box_any(self: Box<Self>) -> Box<dyn Any>
-    {
-        self
-    }
-
-    fn rc_any(self: Rc<Self>) -> Rc<dyn Any>
-    {
-        self
-    }
-}
-
-impl CastFrom for dyn Any + 'static
-{
-    fn box_any(self: Box<Self>) -> Box<dyn Any>
-    {
-        self
-    }
-
-    fn rc_any(self: Rc<Self>) -> Rc<dyn Any>
-    {
-        self
-    }
-}
-
-impl<Source: Sized + Sync + Send + 'static> CastFromSync for Source
-{
-    fn arc_any(self: Arc<Self>) -> Arc<dyn Any + Sync + Send + 'static>
-    {
-        self
-    }
-}
-
-impl CastFrom for dyn Any + Sync + Send + 'static
-{
-    fn box_any(self: Box<Self>) -> Box<dyn Any>
-    {
-        self
-    }
-
-    fn rc_any(self: Rc<Self>) -> Rc<dyn Any>
-    {
-        self
-    }
-}
-
-impl CastFromSync for dyn Any + Sync + Send + 'static
-{
-    fn arc_any(self: Arc<Self>) -> Arc<dyn Any + Sync + Send + 'static>
-    {
-        self
-    }
-}
-
-#[cfg(test)]
-mod tests
-{
-    use std::any::TypeId;
-    use std::fmt::Debug;
-
-    use linkme::distributed_slice;
-
-    use super::*;
-    use crate::test_utils::subjects;
-
-    #[distributed_slice(super::CASTERS)]
-    static TEST_CASTER: fn() -> (TypeId, BoxedCaster) = create_test_caster;
-
-    fn create_test_caster() -> (TypeId, BoxedCaster)
-    {
-        let type_id = TypeId::of::<subjects::Ninja>();
-
-        let caster = Box::new(Caster::<dyn Debug> {
-            cast_box: |from| {
-                let concrete = from
-                    .downcast::<subjects::Ninja>()
-                    .map_err(|_| CasterError::CastBoxFailed)?;
-
-                Ok(concrete as Box<dyn Debug>)
-            },
-            cast_rc: |from| {
-                let concrete = from
-                    .downcast::<subjects::Ninja>()
-                    .map_err(|_| CasterError::CastRcFailed)?;
-
-                Ok(concrete as Rc<dyn Debug>)
-            },
-            opt_cast_arc: Some(|from| {
-                let concrete = from
-                    .downcast::<subjects::Ninja>()
-                    .map_err(|_| CasterError::CastArcFailed)?;
-
-                Ok(concrete as Arc<dyn Debug>)
-            }),
-        });
-        (type_id, caster)
-    }
-}
diff --git a/src/libs/mod.rs b/src/libs/mod.rs
deleted file mode 100644
index 8d5583d..0000000
--- a/src/libs/mod.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-pub mod intertrait;
-
-pub extern crate linkme;