Struct rustc_mir_transform::coverage::spans::CoverageSpan

struct CoverageSpan {
    span: Span,
    bcb: BasicCoverageBlock,
    merged_spans: Vec<Span>,
    is_closure: bool,
}

A BCB is deconstructed into one or more Spans. Each Span maps to a CoverageSpan that references the originating BCB and one or more MIR Statements and/or Terminators. Initially, the Spans come from the Statements and Terminators, but subsequent transforms can combine adjacent Spans and CoverageSpan from the same BCB, merging the merged_spans vectors, and the Spans to cover the extent of the combined Spans.

Note: A span merged into another CoverageSpan may come from a BasicBlock that is not part of the CoverageSpan bcb if the statement was included because it’s Span matches or is subsumed by the Span associated with this CoverageSpan, and it’s BasicBlock dominates() the BasicBlocks in this CoverageSpan.

Fields

span: Span

bcb: BasicCoverageBlock

merged_spans: Vec<Span>

List of all the original spans from MIR that have been merged into this span. Mainly used to precisely skip over gaps when truncating a span.

is_closure: bool

Implementations

impl CoverageSpan

fn new(span: Span, bcb: BasicCoverageBlock, is_closure: bool) -> Self

pub fn merge_from(&mut self, other: &Self)

pub fn cutoff_statements_at(&mut self, cutoff_pos: BytePos)

pub fn is_mergeable(&self, other: &Self) -> bool

pub fn is_in_same_bcb(&self, other: &Self) -> bool

Trait Implementations

impl Clone for CoverageSpan

fn clone(&self) -> CoverageSpan

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CoverageSpan

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

Formats the value using the given formatter.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 40 bytes