Enum CastKind 

pub enum CastKind {
    Scalar(ScalarTy),
    RawPtr(Ty),
    PtrExposeProvenance,
    PtrWithExposedProvenance(Ty),
    FnDefToFnPtr,
    FnPtrToUnsafe,
    Subtype(Ty),
    Unsize(Ty, UnsizingMetadata, MetadataPath),
    Transmute(Ty),
    Concretize(Ty, MetadataPath),
}

Cast the operand to a new type.

Variants

Scalar(ScalarTy)

Conversion between scalar types. See https://doc.rust-lang.org/reference/expressions/operator-expr.html#r-expr.as.numeric

RawPtr(Ty)

Convert a raw pointer or function pointer to a raw pointer.

PtrExposeProvenance

Converts a pointer or function pointer to an address, exposing its provenance. See https://doc.rust-lang.org/std/primitive.pointer.html#method.expose_provenance.

PtrWithExposedProvenance(Ty)

Converts an address to a pointer, which picks up exposed provenance. See https://doc.rust-lang.org/std/ptr/fn.with_exposed_provenance.html.

FnDefToFnPtr

Turn a function item into a function pointer, binding exactly its late-bound regions.

FnPtrToUnsafe

Convert a safe function pointer to an unsafe function pointer with the same signature.

Subtype(Ty)

Convert a value to a supertype; this has no runtime effect.

Unsize(Ty, UnsizingMetadata, MetadataPath)

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)

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

Concretize(Ty, MetadataPath)

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 --treat-box-as-builtin
• smart-pointers, e.g. Rc<dyn Trait<...>> -> Rc<T> or Pin<&mut dyn Trait<...>> -> Pin<&mut T>

For possible receivers, see: https://doc.rust-lang.org/reference/items/traits.html#dyn-compatibility.

With --index-to-function-calls, this also converts &[T] to &[T; N] (or the mutable equivalents) when an array subslice projection determines the length statically.

Implementations

impl CastKind

pub fn is_scalar(&self) -> bool

pub fn is_raw_ptr(&self) -> bool

pub fn is_ptr_expose_provenance(&self) -> bool

pub fn is_ptr_with_exposed_provenance(&self) -> bool

pub fn is_fn_def_to_fn_ptr(&self) -> bool

pub fn is_fn_ptr_to_unsafe(&self) -> bool

pub fn is_subtype(&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 drive_two<V: ZipAst>(&self, other: &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))

where Self: Sized,

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))

where Self: Sized,

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, __State: ?Sized> DeserializeState<'de, __State> for CastKind

where ScalarTy: DeserializeState<'de, __State>, Ty: DeserializeState<'de, __State>, UnsizingMetadata: DeserializeState<'de, __State>, MetadataPath: DeserializeState<'de, __State>,

fn deserialize_state<__D>( __state: &__State, __deserializer: __D, ) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

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

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

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, ScalarTy> + VisitMut<'s, Ty> + VisitMut<'s, UnsizingMetadata> + VisitMut<'s, MetadataPath>,

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

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

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

where V: Visitor<Break: Default> + VisitTwo<'s, ScalarTy> + VisitTwo<'s, Ty> + VisitTwo<'s, UnsizingMetadata> + VisitTwo<'s, MetadataPath>,

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

Call v.visit() on the immediate contents of self and other, if they correspond. If the values don’t match up, this returns Break(Default::default()).

impl Eq for CastKind

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 Hash for CastKind

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for CastKind

fn cmp(&self, other: &CastKind) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for CastKind

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for CastKind

fn partial_cmp(&self, other: &CastKind) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<__State: ?Sized> SerializeState<__State> for CastKind

where ScalarTy: SerializeState<__State>, Ty: SerializeState<__State>, UnsizingMetadata: SerializeState<__State>, MetadataPath: SerializeState<__State>,

fn serialize_state<__S>( &self, __state: &__State, __serializer: __S, ) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

impl StructuralPartialEq for CastKind