Elamur Groupantsqagen-prompt-rules
The groupant beside qagen/src/prompt.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 |
|---|---|---|---|
qagen-prompt-rules-complement | behavior_complement | partial source model | behavior-complement |
qagen-prompt-rules-reverse | reverse_reconstruction | partial source model | reverse-reconstruction |
qagen-prompt-rules-projection | prompt_coordinate_projection | partial source model | specialization |
Model text
forward
Select fixed literal RULES for V1 and RULES_V2 for V2; v2 requires an explicit verbatim span while v1 permits its historical wording.
invariant
Original paragraph number is displayed but never replaces batch-local P index. Sentence IDs never replace local sentence coordinates. A predecessor in another document cannot suppress context. i64::MAX has no successor.
behavior-complement
Output with wrapped successor context suppression, cross-document context suppression or global sent_id as local numeric labels is excluded. No semantic validation or sanitization of supplied textual fields is performed. Universe: supplied finite UTF-8 strings/Para sequences and candidate observable results. These are scoped source-derived exclusions, not merely negative test outcomes.
reverse-reconstruction
The two distinct rule strings recover V1 or V2 uniquely; unrelated text is outside the image. Operator is the set-valued fiber F^-1(y) = {x in domain | F(x)=y}; no implemented complete inverse solver or unique recovery claim.
specialization
Context predicate is independently modeled by i128(prev)+1=current and document equality, avoiding overflow in the finite reference. Rules are distinct prefixes; changing only the rule preserves the paragraph body.
cost
O(1) static-string dispatch; prefix copy costs its fixed length.
composition
Schema version selects a fixed rules prefix; renderer appends batch-local paragraph and sentence coordinates. Context uses original document identity and paragraph number only for immediate-predecessor adjacency. Child scopes share source identity; inverses must share the same Rule and Para sequence rather than combining unrelated marginal fibers.
checks
Six new wave17_models tests (two schema, four prompt), including 256 rule bytes and 98 successor cases. See root evidence.md for compiled controls and repeated build-profile outcomes.
epoch-memory
2026-10-30 prospective review: unchecked predecessor addition could overflow; cross-document comparison already correct. A synthetic MAX to MIN witness panicked before repair. checked_add preserves ordinary adjacency and keeps context at the overflow boundary. Schema literal mapping had no witnessed defect. No API changes.
limitations
Partial source models, with literal and finite observations; no analytical approximation error or speed claim. Syntax projection is partial, macro bodies opaque. Input text is rendered verbatim, including delimiter-like content; grammar-injective recovery requires trusted delimiter-free fields. Teacher, parser, corpus, database and data acquisition were not executed.
This page in Markdown → https://md.groupants.elamur.ai/free/en/mova/qagen/src/prompt.rs.groupant/rules.groupant/