Struct Span 

pub struct Span<T> { /* private fields */ }

This type is used to wrap any T with a SourceSpan, and is typically used when it is not convenient to add a SourceSpan to the type - most commonly because we don’t control the type.

Implementations

impl<T> Span<T>

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

Creates a span for spanned with span.

pub fn at(source_id: SourceId, offset: usize, spanned: T) -> Self

Creates a span for spanned representing a single location, offset.

pub fn unknown(spanned: T) -> Self

Creates a Span from a value with an unknown/default location.

pub fn with_span(self, span: SourceSpan) -> Self

Consume this Span and get a new one with span as the underlying source span

pub const fn span(&self) -> SourceSpan

Gets the associated SourceSpan for this spanned item.

pub const fn inner(&self) -> &T

Gets a reference to the spanned item.

pub fn map<U, F>(self, f: F) -> Span<U>

where F: FnMut(T) -> U,

Applies a transformation to the spanned value while retaining the same SourceSpan.

pub fn as_deref<U>(&self) -> Span<&U>

where U: ?Sized, T: Deref<Target = U>,

Like Option<T>::as_deref, this constructs a Span<U> wrapping the result of dereferencing the inner value of type T as a value of type U.

pub fn as_ref(&self) -> Span<&T>

Gets a new Span that borrows the inner value.

pub fn set_source_id(&mut self, id: SourceId)

Manually set the source id for the span of this item

See also SourceSpan::set_source_id.

pub fn shift(&mut self, count: ByteOffset)

Shifts the span right by count units

pub fn extend(&mut self, count: ByteOffset)

Extends the end of the span by count units.

pub fn into_parts(self) -> (SourceSpan, T)

Consumes this span, returning the component parts, i.e. the SourceSpan and value of type T.

pub fn into_inner(self) -> T

Unwraps the spanned value of type T.

Trait Implementations

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

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

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

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

fn as_ref(&self) -> &T

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

impl<U, T: Borrow<[U]>> Borrow<[U]> for Span<T>

fn borrow(&self) -> &[U]

Immutably borrows from an owned value.

impl<T> Borrow<T> for Span<T>

fn borrow(&self) -> &T

Immutably borrows from an owned value.

impl<T: Borrow<str>> Borrow<str> for Span<T>

fn borrow(&self) -> &str

Immutably borrows from an owned value.

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: Default> Default for Span<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T> Deref for Span<T>

type Target = T

The resulting type after dereferencing.

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

Dereferences the value.

impl<T> DerefMut for Span<T>

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

Mutably dereferences the value.

impl<'de, T: Deserialize<'de>> Deserialize<'de> for Span<T>

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

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: PartialEq> PartialEq<T> for Span<T>

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

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

fn partial_cmp(&self, other: &Self) -> 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: Serialize> Serialize for Span<T>

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl<T> Spanned for Span<T>

fn span(&self) -> SourceSpan

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

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