Struct SpanMap 

pub struct SpanMap {
    spans: Vec<(TextSize, Span)>,
    pub matched_arm: Option<u32>,
}

Maps absolute text ranges for the corresponding file to the relevant span data.

Fields

spans: Vec<(TextSize, Span)>

The offset stored here is the end of the node.

matched_arm: Option<u32>

Index of the matched macro arm on successful expansion for declarative macros.

Implementations

impl SpanMap

pub fn empty() -> Self

Creates a new empty SpanMap.

pub fn finish(&mut self)

Finalizes the SpanMap, shrinking its backing storage and validating that the offsets are in order.

pub fn push(&mut self, offset: TextSize, span: Span)

Pushes a new span onto the SpanMap.

pub fn ranges_with_span_exact( &self, span: Span, ) -> impl Iterator<Item = (TextRange, SyntaxContext)> + '_

Returns all TextRanges that correspond to the given span.

Note this does a linear search through the entire backing vector.

pub fn ranges_with_span( &self, span: Span, ) -> impl Iterator<Item = (TextRange, SyntaxContext)> + '_

Returns all TextRanges whose spans contain the given span.

Note this does a linear search through the entire backing vector.

pub fn span_at(&self, offset: TextSize) -> Span

Returns the span at the given position.

pub fn spans_for_range( &self, range: TextRange, ) -> impl Iterator<Item = Span> + '_

Returns the spans associated with the given range. In other words, this will return all spans that correspond to all offsets within the given range.

pub fn iter(&self) -> impl Iterator<Item = (TextSize, Span)> + '_

pub fn merge( &mut self, other_range: TextRange, other_size: TextSize, other: &SpanMap, )

Merges this span map with another span map, where other is inserted at (and replaces) other_range.

The length of the replacement node needs to be other_size.

Trait Implementations

impl Clone for SpanMap

fn clone(&self) -> SpanMap

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpanMap

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

Formats the value using the given formatter.

impl Drop for SpanMap

Available on non-no_salsa_async_drops only.

fn drop(&mut self)

Executes the destructor for this type.

impl Hash for SpanMap

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for SpanMap

fn eq(&self, other: &SpanMap) -> 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 Eq for SpanMap

impl StructuralPartialEq for SpanMap