Struct rustc_ap_rustc_span::SpanData

pub struct SpanData {
    pub lo: BytePos,
    pub hi: BytePos,
    pub ctxt: SyntaxContext,
}

Represents a span.

Spans represent a region of code, used for error reporting. Positions in spans are absolute positions from the beginning of the SourceMap, not positions relative to SourceFiles. Methods on the SourceMap can be used to relate spans back to the original source.

You must be careful if the span crosses more than one file, since you will not be able to use many of the functions on spans in source_map and you cannot assume that the length of the span is equal to span.hi - span.lo; there may be space in the BytePos range between files.

SpanData is public because Span uses a thread-local interner and can't be sent to other threads, but some pieces of performance infra run in a separate thread. Using Span is generally preferred.

Fields

lo: BytePos

hi: BytePos

ctxt: SyntaxContext

Information about where the macro came from, if this piece of code was created by a macro expansion.

Implementations

impl SpanData

pub fn span(&self) -> Span

pub fn with_lo(&self, lo: BytePos) -> Span

pub fn with_hi(&self, hi: BytePos) -> Span

pub fn with_ctxt(&self, ctxt: SyntaxContext) -> Span

Trait Implementations

impl Clone for SpanData

pub fn clone(&self) -> SpanData

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for SpanData

impl Debug for SpanData

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

Formats the value using the given formatter.

impl Eq for SpanData

impl Hash for SpanData

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl Ord for SpanData

pub fn cmp(&self, other: &SpanData) -> Ordering

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<SpanData> for SpanData

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<SpanData> for SpanData

pub fn partial_cmp(&self, other: &SpanData) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

pub fn lt(&self, other: &SpanData) -> bool

This method tests less than (for self and other) and is used by the < operator.

pub fn le(&self, other: &SpanData) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

pub fn gt(&self, other: &SpanData) -> bool

This method tests greater than (for self and other) and is used by the > operator.

pub fn ge(&self, other: &SpanData) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for SpanData

impl StructuralPartialEq for SpanData