Struct Span 

pub struct Span {
    pub start: usize,
    pub end: usize,
}

Fields

start: usize

end: usize

Implementations

impl Span

pub const fn empty() -> Self

pub fn is_empty(&self) -> bool

pub fn or(&self, other: Self) -> Self

Return self if not empty, or the other span if self is empty

pub fn to(&self, other: Self) -> Self

Get the combined span that encompasses both spans. The order does not matter.

pub fn skip(&self, skip: Self) -> Self

Take the current span, but skip the start until the skip span has been passed

pub fn start_from(&self, start: Self) -> Self

Take the current span, but skip the first part and start from the given start span

pub fn collapse_to_end(&self) -> Span

Discard the span and keep a zero-length span at the end value

Trait Implementations

impl Clone for Span

fn clone(&self) -> Span

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Span

impl Debug for Span

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

Formats the value using the given formatter.

impl Default for Span

fn default() -> Span

Returns the “default value” for a type.

impl Display for Span

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

Formats the value using the given formatter.

impl Eq for Span

impl<'a> From<&'a Span> for Range<usize>

fn from(value: &'a Span) -> Self

Converts to this type from the input type.

impl From<(usize, usize)> for Span

fn from(value: (usize, usize)) -> Self

Converts to this type from the input type.

impl From<Range<usize>> for Span

fn from(value: Range<usize>) -> Self

Converts to this type from the input type.

impl From<Span> for Range<usize>

fn from(value: Span) -> Self

Converts to this type from the input type.

impl Hash for Span

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 PartialEq for Span

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

Equality operator ==.

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

Inequality operator !=.

impl Span for Span

type Context = ()

Extra context used in a span.

type Offset = usize

A type representing a span’s start or end offset from the start of the input.

fn new(_context: Self::Context, range: Range<Self::Offset>) -> Self

Create a new span given a context and an offset range.

fn context(&self) -> Self::Context

Return the span’s context.

fn start(&self) -> Self::Offset

Return the start offset of the span.

fn end(&self) -> Self::Offset

Return the end offset of the span.

fn to_end(&self) -> Self

where Self: Sized,

Turn this span into a zero-width span that starts and ends at the end of the original.

fn union(&self, other: Self) -> Self

where Self::Context: PartialEq + Debug, Self::Offset: Ord, Self: Sized,

Combine two assumed-contiguous spans together into a larger span that encompasses both (and anything between).

impl StructuralPartialEq for Span