pub struct Limit(pub usize);
Expand description

New-type wrapper around usize for representing limits. Ensures that comparisons against limits are consistent throughout the compiler.

Tuple Fields§

§0: usize

Implementations§

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impl Limit

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pub fn new(value: usize) -> Self

Create a new limit from a usize.

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pub fn value_within_limit(&self, value: usize) -> bool

Check that value is within the limit. Ensures that the same comparisons are used throughout the compiler, as mismatches can cause ICEs, see #72540.

Trait Implementations§

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impl Clone for Limit

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fn clone(&self) -> Limit

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Limit

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

Formats the value using the given formatter. Read more
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impl Display for Limit

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

Formats the value using the given formatter. Read more
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impl Div<usize> for Limit

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type Output = Limit

The resulting type after applying the / operator.
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fn div(self, rhs: usize) -> Self::Output

Performs the / operation. Read more
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impl From<usize> for Limit

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fn from(value: usize) -> Self

Converts to this type from the input type.
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impl<__CTX> HashStable<__CTX> for Limitwhere
__CTX: HashStableContext,

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fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

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impl IntoDiagnosticArg for Limit

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impl Mul<usize> for Limit

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type Output = Limit

The resulting type after applying the * operator.
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fn mul(self, rhs: usize) -> Self::Output

Performs the * operation. Read more
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impl Copy for Limit

Auto Trait Implementations§

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impl RefUnwindSafe for Limit

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impl Send for Limit

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impl Sync for Limit

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impl Unpin for Limit

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impl UnwindSafe for Limit

Blanket Implementations§

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impl<T> Any for Twhere
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere
U: From<T>,

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere
T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for Twhere
T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
const: unstable · source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 8 bytes