Struct Span

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

Span represents the position information of a single AST item.

All span positions are absolute byte offsets that can be used on the original regular expression that was parsed.

Fields

start: Position

The start byte offset.

end: Position

The end byte offset.

Implementations

impl Span

pub fn new(start: Position, end: Position) -> Span

Create a new span with the given positions.

pub fn splat(pos: Position) -> Span

Create a new span using the given position as the start and end.

pub fn with_start(self, pos: Position) -> Span

Create a new span by replacing the starting the position with the one given.

pub fn with_end(self, pos: Position) -> Span

Create a new span by replacing the ending the position with the one given.

pub fn is_one_line(&self) -> bool

Returns true if and only if this span occurs on a single line.

pub fn is_empty(&self) -> bool

Returns true if and only if this span is empty. That is, it points to a single position in the concrete syntax of a regular expression.

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 Ord for Span

fn cmp(&self, other: &Span) -> 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 PartialEq for Span

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

fn partial_cmp(&self, other: &Span) -> 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 Copy for Span

impl Eq for Span

impl StructuralPartialEq for Span