Enum CastKind

pub enum CastKind {
    Scalar(LiteralTy, LiteralTy),
    RawPtr(Ty, Ty),
    FnPtr(Ty, Ty),
    Unsize(Ty, Ty, UnsizingMetadata),
    Transmute(Ty, Ty),
    Concretize(Ty, Ty),
}

For all the variants: the first type gives the source type, the second one gives the destination type.

Variants

Scalar(LiteralTy, LiteralTy)

Conversion between types in {Integer, Bool} Remark: for now we don’t support conversions with Char.

RawPtr(Ty, Ty)

FnPtr(Ty, Ty)

Unsize(Ty, Ty, UnsizingMetadata)

Unsize coercion. This is either [T; N] -> [T] or T: Trait -> dyn Trait coercions, behind a pointer (reference, Box, or other type that implements CoerceUnsized).

The special case of &[T; N] -> &[T] coercion is caught by UnOp::ArrayToSlice.

Transmute(Ty, Ty)

Reinterprets the bits of a value of one type as another type, i.e. exactly what std::mem::transmute does.

Concretize(Ty, Ty)

Converts a receiver type with dyn Trait<...> to a concrete type T, used in vtable method shims. Valid conversions are references, raw pointers, and (optionally) boxes:

• &[mut] dyn Trait<...> -> &[mut] T
• *[mut] dyn Trait<...> -> *[mut] T
• Box<dyn Trait<...>> -> Box<T> when no --raw-boxes

For possible receivers, see: https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility. Other receivers, e.g., Rc should be unpacked before the cast and re-boxed after. FIXME(ssyram): but this is not implemented yet, namely, there may still be something like Rc<dyn Trait<...>> -> Rc<T> in the types.

Implementations

impl CastKind

pub fn is_scalar(&self) -> bool

pub fn is_raw_ptr(&self) -> bool

pub fn is_fn_ptr(&self) -> bool

pub fn is_unsize(&self) -> bool

pub fn is_transmute(&self) -> bool

pub fn is_concretize(&self) -> bool

impl CastKind

pub fn variant_name(&self) -> &'static str

Trait Implementations

impl AstVisitable for CastKind

fn drive<V: VisitAst>(&self, v: &mut V) -> ControlFlow<V::Break>

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

fn drive_mut<V: VisitAstMut>(&mut self, v: &mut V) -> ControlFlow<V::Break>

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

fn name(&self) -> &'static str

The name of the type, used for debug logging.

fn dyn_visit<T: AstVisitable>(&self, f: impl FnMut(&T))

Visit all occurrences of that type inside self, in pre-order traversal.

fn dyn_visit_mut<T: AstVisitable>(&mut self, f: impl FnMut(&mut T))

Visit all occurrences of that type inside self, in pre-order traversal.

impl Clone for CastKind

fn clone(&self) -> CastKind

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CastKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CastKind

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'s, V> Drive<'s, V> for CastKind

where V: Visitor + Visit<'s, LiteralTy> + Visit<'s, Ty> + Visit<'s, UnsizingMetadata>,

fn drive_inner(&'s self, visitor: &mut V) -> ControlFlow<V::Break>

Call v.visit() on the immediate contents of self.

impl<'s, V> DriveMut<'s, V> for CastKind

where V: Visitor + VisitMut<'s, LiteralTy> + VisitMut<'s, Ty> + VisitMut<'s, UnsizingMetadata>,

fn drive_inner_mut(&'s mut self, visitor: &mut V) -> ControlFlow<V::Break>

Call v.visit() on the immediate contents of self.

impl<C: AstFormatter> FmtWithCtx<C> for CastKind

fn fmt_with_ctx(&self, ctx: &C, f: &mut Formatter<'_>) -> Result

fn with_ctx<'a>(&'a self, ctx: &'a C) -> WithCtx<'a, C, Self>

Returns a struct that implements Display. This allows the following:

fn to_string_with_ctx(&self, ctx: &C) -> String

impl PartialEq for CastKind

fn eq(&self, other: &CastKind) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for CastKind

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for CastKind

impl StructuralPartialEq for CastKind