pub(super) struct CoverageGraph {
    bcbs: IndexVec<BasicCoverageBlock, BasicCoverageBlockData>,
    bb_to_bcb: IndexVec<BasicBlock, Option<BasicCoverageBlock>>,
    pub successors: IndexVec<BasicCoverageBlock, Vec<BasicCoverageBlock>>,
    pub predecessors: IndexVec<BasicCoverageBlock, Vec<BasicCoverageBlock>>,
    dominators: Option<Dominators<BasicCoverageBlock>>,
}
Expand description

A coverage-specific simplification of the MIR control flow graph (CFG). The CoverageGraphs nodes are BasicCoverageBlocks, which encompass one or more MIR BasicBlocks.

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§bcbs: IndexVec<BasicCoverageBlock, BasicCoverageBlockData>§bb_to_bcb: IndexVec<BasicBlock, Option<BasicCoverageBlock>>§successors: IndexVec<BasicCoverageBlock, Vec<BasicCoverageBlock>>§predecessors: IndexVec<BasicCoverageBlock, Vec<BasicCoverageBlock>>§dominators: Option<Dominators<BasicCoverageBlock>>

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impl CoverageGraph

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pub fn from_mir(mir_body: &Body<'_>) -> Self

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fn compute_basic_coverage_blocks( mir_body: &Body<'_> ) -> (IndexVec<BasicCoverageBlock, BasicCoverageBlockData>, IndexVec<BasicBlock, Option<BasicCoverageBlock>>)

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pub fn iter_enumerated( &self ) -> impl Iterator<Item = (BasicCoverageBlock, &BasicCoverageBlockData)>

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pub fn bcb_from_bb(&self, bb: BasicBlock) -> Option<BasicCoverageBlock>

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pub fn dominates( &self, dom: BasicCoverageBlock, node: BasicCoverageBlock ) -> bool

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pub fn cmp_in_dominator_order( &self, a: BasicCoverageBlock, b: BasicCoverageBlock ) -> Ordering

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pub(super) fn bcb_has_multiple_in_edges(&self, bcb: BasicCoverageBlock) -> bool

Returns true if the given node has 2 or more in-edges, i.e. 2 or more predecessors.

This property is interesting to code that assigns counters to nodes and edges, because if a node doesn’t have multiple in-edges, then there’s no benefit in having a separate counter for its in-edge, because it would have the same value as the node’s own counter.

FIXME: That assumption might not be true for TerminatorKind::Yield?

Trait Implementations§

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impl Debug for CoverageGraph

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

Formats the value using the given formatter. Read more
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impl DirectedGraph for CoverageGraph

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impl<'graph> GraphPredecessors<'graph> for CoverageGraph

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impl<'graph> GraphSuccessors<'graph> for CoverageGraph

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impl Index<BasicCoverageBlock> for CoverageGraph

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type Output = BasicCoverageBlockData

The returned type after indexing.
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fn index(&self, index: BasicCoverageBlock) -> &BasicCoverageBlockData

Performs the indexing (container[index]) operation. Read more
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impl IndexMut<BasicCoverageBlock> for CoverageGraph

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fn index_mut( &mut self, index: BasicCoverageBlock ) -> &mut BasicCoverageBlockData

Performs the mutable indexing (container[index]) operation. Read more
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impl WithNumNodes for CoverageGraph

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impl WithPredecessors for CoverageGraph

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fn predecessors( &self, node: Self::Node ) -> <Self as GraphPredecessors<'_>>::Iter

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impl WithStartNode for CoverageGraph

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fn start_node(&self) -> Self::Node

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impl WithSuccessors for CoverageGraph

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fn successors(&self, node: Self::Node) -> <Self as GraphSuccessors<'_>>::Iter

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const ALIGN: Alignment = _

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type Output = R

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fn filterable( self, filter_name: &'static str ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

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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: 168 bytes