Functors¶

Functor modules contain the metric probes and structural comparisons that feed evaluation. Probes measure a single representation, such as CFG complexity or MDG coupling; profunctors compare programs or program/test structure, such as UAST edit distance and structural coverage.

`topos.functors.probes.ast.complexity`	Per-Function Complexity Analysis
`topos.functors.probes.ast.entropy`	Entropy Module Approximates the 'Algorithmic Debt' via Kolmogorov complexity proxy.
`topos.functors.probes.cfg.complexity`	CFG complexity probes.
`topos.functors.probes.cfg.paths`	CFG path probes.
`topos.functors.probes.cpg.danger`	Dangerous-API reachability probe (CPG → ℝ).
`topos.functors.probes.cpg.taint`	Taint-flow probe (CPG → ℝ).
`topos.functors.probes.mdg.coupling`	Coupling Metrics Quantifies the structural coupling of a module within the dependency graph.
`topos.functors.probes.mdg.fan`	Fan-in / Fan-out Metrics Counts incoming and outgoing CALLS edges for a file and its symbols.
`topos.functors.probes.uast.compare`	UAST Comparison Module Cross-language structural comparison built on top of UAST kind values.
`topos.functors.probes.uast.signature`	UAST Signature Module Cheap, language-agnostic structural fingerprints of a UAST root.
`topos.functors.profunctors.ast.compare`	Distance Module Provides two structural distance metrics between program ASTs.
`topos.functors.profunctors.cfg.compare`	CFG Comparison — profunctor D : E × E^op → ℝ restricted to CFGs.
`topos.functors.profunctors.cpg.compare`	CPG Comparison — profunctor `D : E × E^op → ℝ` restricted to the Code Property Graph.
`topos.functors.profunctors.cpg.topological_coverage`	Topological Semantic Test Coverage via Euler Characteristic Transform (ECT).
`topos.functors.profunctors.mdg.compare`	MDG Comparison — profunctor `D : E × E^op → ℝ` restricted to the inter-module dependency graph.
`topos.functors.profunctors.pdg.compare`	PDG Comparison — profunctor `D : E × E^op → ℝ` restricted to the academic intra-procedural Program Dependence Graph.
`topos.functors.profunctors.uast.compare`	UAST Comparison Module Cross-language structural comparison built on top of UAST kind values.
`topos.functors.profunctors.uast.structural_test_coverage`	Structural test coverage (UAST) PUT-directed recall: how much of the program-under-test's UAST structure is represented in the test suite's UAST, using kind histograms, control-flow profiles, and optional k-gram path overlap.