Elamur Groupantsprag-irony-situations
The groupant beside prag/src/irony.rs in the Mova repository: what the code computes, what it never does, how to go back from its outputs, its invariants, cost and checks.
Facts
Implementation material. A Mova code model describes this code at one source revision: partial models, finite checks and their stated scope. It is not a reviewed general exposition, and its labels are shown as written, never raised.
Components
| component | label | where |
|---|---|---|
| approximant | partial source model | forward |
| ast | partial | ../syntax.json |
| composition | partial source model | composition |
| cost | partial source model | cost |
| descriptant | partial source model | epoch-memory |
| invariant | partial source model | invariant |
| tests | partial source model | checks |
Obernants
The typed relations around the forward model: the behaviour complement (what the code never does), the reverse reconstruction (every input compatible with an output) and specialised views.
| id | type | label | where |
|---|---|---|---|
prag-irony-situations-behavior-complement | behavior_complement | partial source model | behavior-complement |
prag-irony-situations-reverse-reconstruction | reverse_reconstruction | partial source model | reverse-reconstruction |
prag-irony-situations-coupling | constraint_relation | partial source model | coupling |
Model text
forward
Follow bounded dependency ancestry; dangling parents abstain. Contiguous lemma/form seeds identify nonoverlapping negative situations unless parent, adjacent preceding token or child ends/denies them. Earlier overlapping seed wins.
invariant
Head zero and out-of-range heads are never indexed. Cycles terminate. Situation spans are nonoverlapping.
cost
Fixed seed list matching plus denial-child scans O(N^2); each ancestry walk O(N).
composition
Native supplied Words/text -> irony executes. CLI consumes candidates; hand-authored labels are finite assertions, not held-out assessment material.
epoch-memory
2026-10-30 initial source-bound epoch. Irony malformed-head native witness panicked before bounds repair. Missing parent evidence now abstains while linear evidence remains. Lens/roles production unchanged. Costs are prospective asymptotic models; no optimization, percentage guarantee or timing claim.
checks
cargo test -p prag --lib irony::wave12_models -- --test-threads=1. File-root evidence.md binds repeated profiles and mutants. No live parser/teacher/corpus or persisted exam evaluation.
behavior-complement
Domain: finite inputs satisfying this fragment's forward premises and the parent API tag/state constraints; output is its scoped observation. Let J_fragment(x,y) impose the concrete relations: Follow bounded dependency ancestry; dangling parents abstain. Contiguous lemma/form seeds identify nonoverlapping negative situations unless parent, adjacent preceding token or child ends/denies them. Earlier overlapping seed wins. Also require: Head zero and out-of-range heads are never indexed. Cycles terminate. Situation spans are nonoverlapping. The inner absent-behavior model is {(x,y): not J_fragment(x,y)}. This excludes wrong indices, selections or outputs, rather than treating a scope disclaimer as a behavioral predicate. Finite checks support selected cases; unknown external semantics remain outside this claim.
reverse-reconstruction
Absent spans can mean missing seed, denial or overlap. Retained span constrains seed and no recognized denial but leaves other tokens/heads ambiguous. Relation B(y) retains every modeled compatible antecedent; no unique inverse or complete executed solver.
Formally retain every parent-tagged input and compatible intermediate state satisfying the forward relation with the observed fragment output. Do not merge antecedents merely because their projected result agrees; no unique inverse or complete executed solver is claimed.
coupling
Old-code invalid-head witness panicked; new tests cover head 3 and usize::MAX on two words, a cycle and explicit linear evidence after ancestry abstention.
Typed entries bind the manifest revision, stated domain and observation, assuming stable compiled dependencies and bounded execution. Status is partial source-derived relation with finite named checks. Partial syntax leaves macro bodies opaque and is no semantic proof.
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/prag/src/irony.rs.groupant/situations.groupant/