Enum ExactSizeExprKind 

pub enum ExactSizeExprKind {
    Constant(ConstantExpr),
    FromMetadata(MetadataValue),
    Max(Vec<ExactSizeExpr>),
    Min(Vec<ExactSizeExpr>),
    Plus(ExactSizeExpr, ExactSizeExpr),
    Scale(ExactSizeExpr, ConstantExpr),
    AlignTo {
        base: ExactSizeExpr,
        target_align: ExactSizeExpr,
    },
    IfInhabited {
        ty: Ty,
        then_size: ExactSizeExpr,
        else_size: ExactSizeExpr,
    },
}

Variants

Constant(ConstantExpr)

An arbitrary constant of type usize.

FromMetadata(MetadataValue)

Layout information stored in the pointer metadata to this object.

Max(Vec<ExactSizeExpr>)

Min(Vec<ExactSizeExpr>)

Plus(ExactSizeExpr, ExactSizeExpr)

Scale(ExactSizeExpr, ConstantExpr)

AlignTo

The next multiple of target_align from base.

Fields

base: ExactSizeExpr

target_align: ExactSizeExpr

IfInhabited

A size expression that depens on whether the given type is inhabited.

Fields

ty: Ty

then_size: ExactSizeExpr

else_size: ExactSizeExpr

Implementations

impl ExactSizeExprKind

pub fn is_constant(&self) -> bool

pub fn is_from_metadata(&self) -> bool

pub fn is_max(&self) -> bool

pub fn is_min(&self) -> bool

pub fn is_plus(&self) -> bool

pub fn is_scale(&self) -> bool

pub fn is_align_to(&self) -> bool

pub fn is_if_inhabited(&self) -> bool

impl ExactSizeExprKind

pub fn as_constant(&self) -> Option<&ConstantExpr>

pub fn as_from_metadata(&self) -> Option<&MetadataValue>

pub fn as_max(&self) -> Option<&Vec<ExactSizeExpr>>

pub fn as_min(&self) -> Option<&Vec<ExactSizeExpr>>

pub fn as_plus(&self) -> Option<(&ExactSizeExpr, &ExactSizeExpr)>

pub fn as_scale(&self) -> Option<(&ExactSizeExpr, &ConstantExpr)>

pub fn as_align_to(&self) -> Option<(&ExactSizeExpr, &ExactSizeExpr)>

pub fn as_if_inhabited(&self) -> Option<(&Ty, &ExactSizeExpr, &ExactSizeExpr)>

impl ExactSizeExprKind

pub fn as_constant_mut(&mut self) -> Option<&mut ConstantExpr>

pub fn as_from_metadata_mut(&mut self) -> Option<&mut MetadataValue>

pub fn as_max_mut(&mut self) -> Option<&mut Vec<ExactSizeExpr>>

pub fn as_min_mut(&mut self) -> Option<&mut Vec<ExactSizeExpr>>

pub fn as_plus_mut( &mut self, ) -> Option<(&mut ExactSizeExpr, &mut ExactSizeExpr)>

pub fn as_scale_mut( &mut self, ) -> Option<(&mut ExactSizeExpr, &mut ConstantExpr)>

pub fn as_align_to_mut( &mut self, ) -> Option<(&mut ExactSizeExpr, &mut ExactSizeExpr)>

pub fn as_if_inhabited_mut( &mut self, ) -> Option<(&mut Ty, &mut ExactSizeExpr, &mut ExactSizeExpr)>

impl ExactSizeExprKind

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

impl ExactSizeExprKind

pub fn zero() -> Self

pub fn from_usize(value: u128) -> Self

pub fn into_expr(self) -> ExactSizeExpr

Trait Implementations

impl AstVisitable for ExactSizeExprKind

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 ExactSizeExprKind

fn clone(&self) -> ExactSizeExprKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExactSizeExprKind

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

Formats the value using the given formatter.

impl<'de, __State: ?Sized> DeserializeState<'de, __State> for ExactSizeExprKind

where ConstantExpr: DeserializeState<'de, __State>, MetadataValue: DeserializeState<'de, __State>, Vec<ExactSizeExpr>: DeserializeState<'de, __State>, ExactSizeExpr: DeserializeState<'de, __State>, Ty: 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 ExactSizeExprKind

where V: Visitor + Visit<'s, ConstantExpr> + Visit<'s, MetadataValue> + Visit<'s, Vec<ExactSizeExpr>> + Visit<'s, ExactSizeExpr> + Visit<'s, Ty>,

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 ExactSizeExprKind

where V: Visitor + VisitMut<'s, ConstantExpr> + VisitMut<'s, MetadataValue> + VisitMut<'s, Vec<ExactSizeExpr>> + VisitMut<'s, ExactSizeExpr> + VisitMut<'s, Ty>,

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 ExactSizeExprKind

where V: Visitor<Break: Default> + VisitTwo<'s, ConstantExpr> + VisitTwo<'s, MetadataValue> + VisitTwo<'s, Vec<ExactSizeExpr>> + VisitTwo<'s, ExactSizeExpr> + VisitTwo<'s, Ty>,

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 ExactSizeExprKind

impl From<ExactSizeExprKind> for ExactSizeExpr

fn from(kind: ExactSizeExprKind) -> Self

Converts to this type from the input type.

impl Hash for ExactSizeExprKind

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 ExactSizeExprKind

fn cmp(&self, other: &ExactSizeExprKind) -> 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.

impl PartialEq for ExactSizeExprKind

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for ExactSizeExprKind

fn partial_cmp(&self, other: &ExactSizeExprKind) -> 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 ExactSizeExprKind

where ConstantExpr: SerializeState<__State>, MetadataValue: SerializeState<__State>, Vec<ExactSizeExpr>: SerializeState<__State>, ExactSizeExpr: SerializeState<__State>, Ty: SerializeState<__State>,

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

where __S: Serializer,

impl StructuralPartialEq for ExactSizeExprKind