Struct lrpar::Span

pub struct Span { /* fields omitted */ }

A Span records what portion of the user’s input something (e.g. a lexeme or production) references (i.e. the Span doesn’t hold a reference / copy of the actual input).

Implementations

impl Span

pub fn new(start: usize, end: usize) -> Self

Create a new span starting at byte start and ending at byte end.

Panics

If end is less than start.

pub fn start(&self) -> usize

Byte offset of the start of the span.

pub fn end(&self) -> usize

Byte offset of the end of the span.

pub fn len(&self) -> usize

Length in bytes of the span.

pub fn is_empty(&self) -> bool

Returns true if this Span covers 0 bytes, or false otherwise.

Trait Implementations

impl Clone for Span

fn clone(&self) -> Span

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Span

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

Formats the value using the given formatter.

impl PartialEq<Span> for Span

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Copy for Span

impl Eq for Span

impl StructuralEq for Span

impl StructuralPartialEq for Span