Struct rustc_mir_transform::coverage::Instrumentor

struct Instrumentor<'a, 'tcx> {
    pass_name: &'a str,
    tcx: TyCtxt<'tcx>,
    mir_body: &'a mut Body<'tcx>,
    source_file: Lrc<SourceFile>,
    fn_sig_span: Span,
    body_span: Span,
    basic_coverage_blocks: CoverageGraph,
    coverage_counters: CoverageCounters,
}

Fields

pass_name: &'a str

tcx: TyCtxt<'tcx>

mir_body: &'a mut Body<'tcx>

source_file: Lrc<SourceFile>

fn_sig_span: Span

body_span: Span

basic_coverage_blocks: CoverageGraph

coverage_counters: CoverageCounters

Implementations

impl<'a, 'tcx> Instrumentor<'a, 'tcx>

fn new(
    pass_name: &'a str,
    tcx: TyCtxt<'tcx>,
    mir_body: &'a mut Body<'tcx>
) -> Self

fn inject_counters(&'a mut self)

fn inject_coverage_span_counters(
    &mut self,
    coverage_spans: Vec<CoverageSpan>,
    graphviz_data: &mut GraphvizData,
    debug_used_expressions: &mut UsedExpressions
)

Inject a counter for each CoverageSpan. There can be multiple CoverageSpans for a given BCB, but only one actual counter needs to be incremented per BCB. bb_counters maps each bcb to its Counter, when injected. Subsequent CoverageSpans for a BCB that already has a Counter will inject an Expression instead, and compute its value by adding ZERO to the BCB Counter value.

If debugging, add every BCB Expression associated with a CoverageSpans to the used_expression_operands map.

fn inject_indirect_counters(
    &mut self,
    graphviz_data: &mut GraphvizData,
    debug_used_expressions: &mut UsedExpressions
)

inject_coverage_span_counters() looped through the CoverageSpans and injected the counter from the CoverageSpans BasicCoverageBlock, removing it from the BCB in the process (via take_counter()).

Any other counter associated with a BasicCoverageBlock, or its incoming edge, but not associated with a CoverageSpan, should only exist if the counter is an Expression dependency (one of the expression operands). Collect them, and inject the additional counters into the MIR, without a reportable coverage span.

fn bcb_leader_bb(&self, bcb: BasicCoverageBlock) -> BasicBlock

fn bcb_last_bb(&self, bcb: BasicCoverageBlock) -> BasicBlock

fn bcb_data(&self, bcb: BasicCoverageBlock) -> &BasicCoverageBlockData

fn bcb_data_mut(
    &mut self,
    bcb: BasicCoverageBlock
) -> &mut BasicCoverageBlockData

fn format_counter(&self, counter_kind: &CoverageKind) -> String

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: 248 bytes