Struct SizeExpr 

pub struct SizeExpr(pub HashConsed<WithCachedTypeInfo<SizeExprKind>>);

An expression that represents a size in bytes.

Tuple Fields

0: HashConsed<WithCachedTypeInfo<SizeExprKind>>

Implementations

impl SizeExpr

pub fn new(kind: SizeExprKind) -> Self

pub fn kind(&self) -> &SizeExprKind

pub fn with_kind_mut<R>(&mut self, f: impl FnOnce(&mut SizeExprKind) -> R) -> R

pub fn from_usize(value: u128) -> Self

pub fn size_of(ty: &Ty) -> Self

The symbolic constant size_of::<ty>().

pub fn align_of(ty: &Ty) -> Self

The symbolic constant align_of::<ty>().

pub fn offset_of( ty: TypeDeclRef, variant: Option<VariantId>, field: FieldId, ) -> Self

The symbolic constant offset_of!(ty, variant.field).

fn constant(kind: ConstantExprKind) -> Self

pub fn max_or(values: Vec<SizeExpr>, default: SizeExpr) -> SizeExpr

The maximum of the given values; or default if the list is empty.

pub fn max_align(values: Vec<SizeExpr>) -> SizeExpr

The maximum of the given values; defaults to 1 if the list is empty.

pub fn max_size(values: Vec<SizeExpr>) -> SizeExpr

The maximum of the given values; defaults to 0 if the list is empty.

pub fn align_to(base: SizeExpr, target_align: SizeExpr) -> SizeExpr

pub fn at_least(value: SizeExpr) -> SizeExpr

pub fn if_inhabited( ty: &Ty, then_size: SizeExpr, else_size: SizeExpr, ) -> SizeExpr

pub fn normalize( self, krate: Option<&TranslatedCrate>, for_target: Option<&TargetTriple>, allow_precision_loss: bool, ) -> Self

Recursively evaluate the parts of this expression that are known in krate. If allow_precision_loss is false, SizeOf and AlignOf are only replaced with a SizeExprKind::Constant.

fn as_usize(&self) -> Option<u128>

Methods from Deref<Target = WithCachedTypeInfo<SizeExprKind>>

pub fn type_info(&self) -> TypeInfo

Trait Implementations

impl AstVisitable for SizeExpr

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 SizeExpr

fn clone(&self) -> SizeExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SizeExpr

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

Formats the value using the given formatter.

impl Deref for SizeExpr

type Target = WithCachedTypeInfo<SizeExprKind>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'de, __State: ?Sized + DedupSerializerState> DeserializeState<'de, __State> for SizeExpr

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

where __D: Deserializer<'de>,

impl Display for SizeExpr

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

Formats the value using the given formatter.

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

where V: Visitor + Visit<'s, HashConsed<WithCachedTypeInfo<SizeExprKind>>>,

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 SizeExpr

where V: Visitor + VisitMut<'s, HashConsed<WithCachedTypeInfo<SizeExprKind>>>,

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 SizeExpr

where V: Visitor<Break: Default> + VisitTwo<'s, HashConsed<WithCachedTypeInfo<SizeExprKind>>>,

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 SizeExpr

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

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 From<SizeExprKind> for SizeExpr

fn from(kind: SizeExprKind) -> Self

Converts to this type from the input type.

impl Hash for SizeExpr

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 SizeExpr

fn cmp(&self, other: &SizeExpr) -> 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 SizeExpr

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for SizeExpr

fn partial_cmp(&self, other: &SizeExpr) -> 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 + DedupSerializerState> SerializeState<__State> for SizeExpr

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

where __S: Serializer,

impl StructuralPartialEq for SizeExpr