Struct Span 

pub struct Span<T: ?Sized> {
    pub item: T,
    /* private fields */
}

Span is used to wrap types which do not implement Spanned in a type that does.

Span is a bit special in that it is intended to be as transparent as possible, that means that it implements a variety of traits in a passthrough fashion, so that the span added to the underlying type does not change its behavior with regards to equality, hashing, ordering, etc. It does however have a Debug implementation that shows the span.

Fields

item: T

The underlying item wrapped by this Span

Implementations

impl<T> Span<T>

pub const fn new(span: SourceSpan, item: T) -> Self

Construct a new Span from a SourceSpan and a [T]

Trait Implementations

impl<T: ?Sized> AsMut<T> for Span<T>

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

Converts this type into a mutable reference of the (usually inferred) input type.

impl<T: ?Sized> AsRef<T> for Span<T>

fn as_ref(&self) -> &T

Converts this type into a shared reference of the (usually inferred) input type.

impl<T: Clone> Clone for Span<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Span<T>

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

Formats the value using the given formatter.

impl<T: ?Sized> Deref for Span<T>

type Target = T

The resulting type after dereferencing.

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

Dereferences the value.

impl<T: ?Sized> DerefMut for Span<T>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<T: Display> Display for Span<T>

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

Formats the value using the given formatter.

impl<T: Hash> Hash for Span<T>

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<T: Ord> Ord for Span<T>

fn cmp(&self, other: &Self) -> 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<T, U> PartialEq<Span<U>> for Span<T>

where T: PartialEq<U>, U: PartialEq<T>,

fn eq(&self, other: &Span<U>) -> 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<T, U> PartialOrd<Span<U>> for Span<T>

where T: PartialOrd<U>, U: PartialOrd<T>,

fn partial_cmp(&self, other: &Span<U>) -> 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<T: ?Sized> Spanned for Span<T>

fn span(&self) -> SourceSpan

impl<T: Copy> Copy for Span<T>

impl<T: Eq> Eq for Span<T>

impl<T: Send> Send for Span<T>

impl<T: Sync> Sync for Span<T>