API: Add impl From<*> for sem::TyKind and correct some names of s…

…emantic types (#322)

* API: Add `sem::CommonTyData`

* API: Rename `sem::TyKind::FnTy` -> `sem::TyKind::Fn`

* Doc: Track changes

* PR Review 1

* PR Review 2

CHANGELOG.md

@@ -1,4 +1,6 @@
-[Unreleased]: https://github.com/rust-marker/marker/compare/v0.4.0...HEAD
+[Unreleased]: https://github.com/rust-marker/marker/compare/v0.4.2...HEAD
+[0.4.2]: https://github.com/rust-marker/marker/releases/tag/v0.4.2
+[0.4.1]: https://github.com/rust-marker/marker/releases/tag/v0.4.1
 [0.4.0]: https://github.com/rust-marker/marker/releases/tag/v0.4.0
 [0.3.0]: https://github.com/rust-marker/marker/releases/tag/v0.3.0
 [0.2.1]: https://github.com/rust-marker/marker/releases/tag/v0.2.1
@@ -24,10 +26,24 @@ The following components are considered to be internal and they are excluded fro
 
 ## [Unreleased]
 
+[#322]: https://github.com/rust-marker/marker/pull/322
+
+### Added
+
+- [#322]: `sem::TyKind` now implements `From<*>` for all semantic types.
+
+### Breaking Changes
+
+- [#322]: Renamed `sem::TyKind::FnTy` -> `sem::TyKind::Fn`
+- [#322]: Renamed `sem::TyKind::ClosureTy` -> `sem::TyKind::Closure`
+- [#322]: Renamed `sem::ClosureTy::closure_ty_id` -> `sem::ClosureTy::def_id`
+
 ## [0.4.2] - 2023-11-25
 
 [#320]: https://github.com/rust-marker/marker/pull/320
 
+### Fixed
+
 - [#320]: Disable LTO on release builds to fix the crash on Windows with `exit code: 0xc0000005, STATUS_ACCESS_VIOLATION`
 
 ## [0.4.1] - 2023-11-24

marker_api/src/common/id.rs

@@ -142,6 +142,15 @@ new_id! {
     pub(crate) SymbolId: u32
 }
 
+new_id! {
+    /// **Unstable**
+    ///
+    /// This id is used by the driver to lint the semantic type representation, back to the
+    /// driver type representation, if needed.
+    #[cfg_attr(feature = "driver-api", visibility::make(pub))]
+    pub(crate) DriverTyId: u64
+}
+
 new_id! {
     /// This ID uniquely identifies a statement during linting.
     pub StmtId: u64

marker_api/src/sem/ty.rs

@@ -5,6 +5,7 @@ mod ptr_ty;
 mod sequence_ty;
 mod trait_ty;
 mod user_ty;
+
 pub use fn_ty::*;
 pub use other_ty::*;
 pub use prim_ty::*;
@@ -13,6 +14,9 @@ pub use sequence_ty::*;
 pub use trait_ty::*;
 pub use user_ty::*;
 
+use crate::common::DriverTyId;
+use std::{fmt::Debug, marker::PhantomData};
+
 /// The semantic representation of a type.
 #[repr(C)]
 #[non_exhaustive]
@@ -43,10 +47,10 @@ pub enum TyKind<'ast> {
     // ================================
     /// A [function item type](https://doc.rust-lang.org/reference/types/function-item.html)
     /// identifying a specific function and potentualy additional generics.
-    FnTy(&'ast FnTy<'ast>),
+    Fn(&'ast FnTy<'ast>),
     /// The semantic representation of a
     /// [closure type](https://doc.rust-lang.org/reference/types/closure.html).
-    ClosureTy(&'ast ClosureTy<'ast>),
+    Closure(&'ast ClosureTy<'ast>),
     // ================================
     // Pointer types
     // ================================
@@ -110,3 +114,43 @@ impl<'ast> TyKind<'ast> {
         ty
     }
 }
+
+#[repr(C)]
+#[cfg_attr(feature = "driver-api", visibility::make(pub))]
+#[cfg_attr(feature = "driver-api", derive(typed_builder::TypedBuilder))]
+pub(crate) struct CommonTyData<'ast> {
+    #[cfg_attr(feature = "driver-api", builder(default))]
+    _lifetime: PhantomData<&'ast ()>,
+    driver_id: DriverTyId,
+}
+
+impl<'ast> Debug for CommonTyData<'ast> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        f.debug_struct("CommonTyData {...}").finish()
+    }
+}
+
+#[cfg(feature = "driver-api")]
+impl<'ast> CommonTyData<'ast> {
+    pub fn driver_id(&self) -> DriverTyId {
+        self.driver_id
+    }
+}
+
+macro_rules! impl_ty_data {
+    ($self_ty:ty, $enum_name:ident) => {
+        #[cfg(feature = "driver_api")]
+        impl<'ast> $self_ty {
+            pub fn data(&self) -> &$crate::sem::ty::CommonTyData<'ast> {
+                &self.data
+            }
+        }
+
+        impl<'ast> From<&'ast $self_ty> for $crate::sem::ty::TyKind<'ast> {
+            fn from(from: &'ast $self_ty) -> Self {
+                $crate::sem::ty::TyKind::$enum_name(from)
+            }
+        }
+    };
+}
+use impl_ty_data;

marker_api/src/sem/ty/fn_ty.rs

@@ -3,11 +3,15 @@ use crate::{
     sem::generic::GenericArgs,
 };
 
+use super::CommonTyData;
+
 /// A [function item type](https://doc.rust-lang.org/reference/types/function-item.html)
 /// identifying a specific function and potentualy additional generics.
 #[repr(C)]
 #[derive(Debug)]
+#[cfg_attr(feature = "driver-api", derive(typed_builder::TypedBuilder))]
 pub struct FnTy<'ast> {
+    data: CommonTyData<'ast>,
     fn_id: ItemId,
     generics: GenericArgs<'ast>,
 }
@@ -24,12 +28,7 @@ impl<'ast> FnTy<'ast> {
     }
 }
 
-#[cfg(feature = "driver-api")]
-impl<'ast> FnTy<'ast> {
-    pub fn new(fn_id: ItemId, generics: GenericArgs<'ast>) -> Self {
-        Self { fn_id, generics }
-    }
-}
+super::impl_ty_data!(FnTy<'ast>, Fn);
 
 /// The semantic representation of a
 /// [closure type](https://doc.rust-lang.org/reference/types/closure.html).
@@ -38,18 +37,20 @@ impl<'ast> FnTy<'ast> {
 /// closure. This type on it's own therefore only identifies the type of the closure.
 #[repr(C)]
 #[derive(Debug)]
+#[cfg_attr(feature = "driver-api", derive(typed_builder::TypedBuilder))]
 pub struct ClosureTy<'ast> {
-    closure_ty_id: TyDefId,
+    data: CommonTyData<'ast>,
+    def_id: TyDefId,
     generics: GenericArgs<'ast>,
 }
 
 impl<'ast> ClosureTy<'ast> {
-    /// This returns the [`ItemId`] of the identified function.
-    pub fn closure_ty_id(&self) -> TyDefId {
-        self.closure_ty_id
+    /// This returns the [`ItemId`] of the struct that was generated for this closure.
+    pub fn def_id(&self) -> TyDefId {
+        self.def_id
     }
 
-    /// This returns the [`GenericArgs`] used by identified function
+    /// This returns the [`GenericArgs`] used by closure.
     pub fn generics(&self) -> &GenericArgs<'ast> {
         &self.generics
     }
@@ -58,12 +59,4 @@ impl<'ast> ClosureTy<'ast> {
     // parameters and return type.
 }
 
-#[cfg(feature = "driver-api")]
-impl<'ast> ClosureTy<'ast> {
-    pub fn new(closure_ty_id: TyDefId, generics: GenericArgs<'ast>) -> Self {
-        Self {
-            closure_ty_id,
-            generics,
-        }
-    }
-}
+super::impl_ty_data!(ClosureTy<'ast>, Closure);

marker_api/src/sem/ty/other_ty.rs

@@ -1,16 +1,12 @@
-use std::marker::PhantomData;
+use super::CommonTyData;
 
 /// The placeholder type, signalling that the semantic type is still unstable
 /// and therefor not represented as part of the API.
 #[repr(C)]
 #[derive(Debug)]
+#[cfg_attr(feature = "driver-api", derive(typed_builder::TypedBuilder))]
 pub struct UnstableTy<'ast> {
-    _lt: PhantomData<&'ast ()>,
+    data: CommonTyData<'ast>,
 }
 
-#[cfg(feature = "driver-api")]
-impl<'ast> UnstableTy<'ast> {
-    pub fn new() -> Self {
-        Self { _lt: PhantomData }
-    }
-}
+super::impl_ty_data!(UnstableTy<'ast>, Unstable);

marker_api/src/sem/ty/prim_ty.rs

@@ -1,19 +1,13 @@
-use std::marker::PhantomData;
-
 use crate::common::{NumKind, TextKind};
 
+use super::CommonTyData;
+
 /// The semantic representation of the [`bool`] type.
 #[repr(C)]
 #[derive(Debug)]
+#[cfg_attr(feature = "driver-api", derive(typed_builder::TypedBuilder))]
 pub struct BoolTy<'ast> {
-    _lt: PhantomData<&'ast ()>,
-}
-
-#[cfg(feature = "driver-api")]
-impl<'ast> BoolTy<'ast> {
-    pub fn new() -> Self {
-        Self { _lt: PhantomData }
-    }
+    data: CommonTyData<'ast>,
 }
 
 impl<'ast> std::fmt::Display for BoolTy<'ast> {
@@ -22,24 +16,17 @@ impl<'ast> std::fmt::Display for BoolTy<'ast> {
     }
 }
 
+super::impl_ty_data!(BoolTy<'ast>, Bool);
+
 /// The semantic representation of a numeric type like [`u32`], [`i32`], [`f64`].
 #[repr(C)]
 #[derive(Debug)]
+#[cfg_attr(feature = "driver-api", derive(typed_builder::TypedBuilder))]
 pub struct NumTy<'ast> {
-    _ast: PhantomData<&'ast ()>,
+    data: CommonTyData<'ast>,
     numeric_kind: NumKind,
 }
 
-#[cfg(feature = "driver-api")]
-impl<'ast> NumTy<'ast> {
-    pub fn new(numeric_kind: NumKind) -> Self {
-        Self {
-            _ast: PhantomData,
-            numeric_kind,
-        }
-    }
-}
-
 impl<'ast> NumTy<'ast> {
     pub fn numeric_kind(&self) -> NumKind {
         self.numeric_kind
@@ -62,6 +49,8 @@ impl<'ast> NumTy<'ast> {
     }
 }
 
+super::impl_ty_data!(NumTy<'ast>, Num);
+
 impl<'ast> std::fmt::Display for NumTy<'ast> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         write!(f, "{:?}", self.numeric_kind)
@@ -70,21 +59,12 @@ impl<'ast> std::fmt::Display for NumTy<'ast> {
 
 /// The semantic representation of a textual type like [`char`] or [`str`].
 #[repr(C)]
+#[cfg_attr(feature = "driver-api", derive(typed_builder::TypedBuilder))]
 pub struct TextTy<'ast> {
-    _ast: PhantomData<&'ast ()>,
+    data: CommonTyData<'ast>,
     textual_kind: TextKind,
 }
 
-#[cfg(feature = "driver-api")]
-impl<'ast> TextTy<'ast> {
-    pub fn new(textual_kind: TextKind) -> Self {
-        Self {
-            _ast: PhantomData,
-            textual_kind,
-        }
-    }
-}
-
 impl<'ast> TextTy<'ast> {
     pub fn textual_kind(&self) -> TextKind {
         self.textual_kind
@@ -99,6 +79,8 @@ impl<'ast> TextTy<'ast> {
     }
 }
 
+super::impl_ty_data!(TextTy<'ast>, Text);
+
 impl<'ast> std::fmt::Debug for TextTy<'ast> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         write!(f, "{:?}", self.textual_kind)
@@ -107,16 +89,12 @@ impl<'ast> std::fmt::Debug for TextTy<'ast> {
 
 /// The semantic representation of the never type [`!`](prim@never).
 #[repr(C)]
+#[cfg_attr(feature = "driver-api", derive(typed_builder::TypedBuilder))]
 pub struct NeverTy<'ast> {
-    _lt: PhantomData<&'ast ()>,
+    data: CommonTyData<'ast>,
 }
 
-#[cfg(feature = "driver-api")]
-impl<'ast> NeverTy<'ast> {
-    pub fn new() -> Self {
-        Self { _lt: PhantomData }
-    }
-}
+super::impl_ty_data!(NeverTy<'ast>, Never);
 
 impl<'ast> std::fmt::Debug for NeverTy<'ast> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {