Struct Span 

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

Source span representing a character range in the original input.

Offsets are character indices (the lexer scans the source as a Vec<char>), not byte offsets — they diverge for multibyte UTF-8. Use Node::source_text to recover the source slice; it converts these character indices to byte offsets before slicing.

Fields

start: usize

end: usize

Implementations

impl Span

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

Creates a new span with the given byte offsets.

pub const fn empty() -> Self

Creates an empty span (used for synthetic nodes).

pub const fn is_empty(&self) -> bool

Returns true if this span has no extent (synthetic or unset).

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 Eq for Span

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 StructuralPartialEq for Span