Struct Span 

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

Half-open byte / line / column range into the original input string. Both endpoints come from the lexer so downstream passes can re-open the source and print a caret-pointed diagnostic without re-lexing.

Fields

start: Position

end: Position

Implementations

impl Span

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

pub fn synthetic() -> Self

A synthetic span marker used when a node is constructed programmatically rather than parsed from source. Debug diagnostics should check for this via is_synthetic() and suppress location pointers rather than printing 0:0.

pub fn is_synthetic(&self) -> bool

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 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 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 Copy for Span

impl Eq for Span

impl StructuralPartialEq for Span