mova-whale-answer
The groupant beside tools/whale/src/answer.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 | Forward approximant |
| ast | partial | syntax.json |
| composition | partial | Composition |
| cost | partial | Cost |
| descriptant | present | Descriptant |
| invariant | partial | Invariant |
| tests | finite evidence | tests.md |
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 |
|---|---|---|---|
behavior_complement | behavior_complement | partial source derived model | behavior_complement |
reverse_reconstruction | reverse_reconstruction | partial source derived model | reverse_reconstruction |
Model text
Descriptant
The Whales' English: deterministic sentences for describe, count, status (service and source), show and pause/resume, over mova_octopus::realize. Source: tools/whale/src/answer.rs.
Forward approximant
Structured results (Outcome list, count/status/show/marker JSON) -> sentences with number agreement (noun_count, be), lists, could_not, utc/thousands; opening(text, max) drops Markdown headings and cuts at a sentence end.
Invariant
Each sentence states only what its input says; unknown fields fall back to neutral words, never invented values.
Cost
Linear in the result size.
Composition
Parent: whale-workers; called by animal.rs Hands.
behavior_complement
Not done: summarizing a description (show quotes its opening), languages other than English, paraphrase variety. Evidence status: source-derived model with finite checks, not a proof.
reverse_reconstruction
From an answer one recovers the counts, ids, titles, states and paths it names; the structured JSON alongside it is the authority. Several inputs can give the same sentence (e.g. missing vs zero counts). No unique inverse is claimed.
tests.md
Command: cargo test --manifest-path tools/whale/Cargo.toml --offline: answer::tests (2) and the served English test (2026-11-04). These are finite fixtures; no live teacher or Whale run; not a proof.
This page in Markdown โ https://md.groupants.elamur.ai/free/en/mova/tools/whale/src/answer.rs.groupant/