Struct DoubleSpan 

pub struct DoubleSpan(pub Span, pub Span);

The real opening and closing boundaries of a paired delimiter.

A delimiter is two spelled tokens, not one span with an inferred width: storing both is what makes Delimiter::opening_span and Delimiter::closing_span plain field reads instead of arithmetic that assumes the source layout. DoubleSpan(open, close) mirrors proc_macro2’s open/close pair for a Group.

Tuple Fields

0: Span

1: Span

Implementations

impl DoubleSpan

pub fn new(open: Span, close: Span) -> Self

Creates an opening and closing span pair.

pub fn detached() -> Self

A pair with no real boundaries, for synthetic or quoted delimiters that were never lexed from source.

pub fn unclosed(open: Span, eof: Offset) -> Self

Creates a delimiter whose closing token is missing at eof.

pub fn open(&self) -> Span

Returns the opening delimiter span.

pub fn close(&self) -> Span

Returns the closing delimiter span.

pub fn is_closed(&self) -> bool

Reports whether a closing delimiter was present or synthetically quoted.

Trait Implementations

impl Clone for DoubleSpan

fn clone(&self) -> DoubleSpan

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DoubleSpan

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

Formats the value using the given formatter.

impl Default for DoubleSpan

fn default() -> DoubleSpan

Returns the “default value” for a type.

impl Eq for DoubleSpan

impl PartialEq for DoubleSpan

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

Equality operator ==.

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

Inequality operator !=.

impl Spanned for DoubleSpan

fn span(&self) -> Span

Returns the smallest span covering this value.

impl StructuralPartialEq for DoubleSpan