---
title: "prag-lib-exports — Mova code model"
description: "Mova code model of prag/src/lib.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/prag/src/lib.rs.groupant/exports.groupant/"
---
Elamur: [Mova](https://md.mova.elamur.ai/free/en/) · [Dictionary](https://md.dictionary.elamur.ai/free/en/) · [Research](https://md.research.elamur.ai/free/en/) · **Groupants**

This page as HTML: <https://groupants.elamur.ai/free/en/mova/prag/src/lib.rs.groupant/exports.groupant/>

# prag-lib-exports

The groupant beside prag/src/lib.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

- **kind:** groupant_fragment
- **status:** partial source bound model
- **source:** [`prag/src/lib.rs`](https://github.com/ElamurAI/mova-free/blob/main/prag/src/lib.rs)
- **source SHA-256:** `01009a73cf1a1bc1…`
- **covers:** Expose prag modules as Rust public paths. Public composition accepts schema Labels, serializes seven columns, applies silver alignment/voice gates; supplied Word vectors feed roles and world with shared document-key semantics. (bytes 627–933)
- **part of:** [prag-lib](https://md.groupants.elamur.ai/free/en/mova/prag/src/lib.rs.groupant/)
- **repository folder:** [`prag/src/lib.rs.groupant/exports.groupant`](https://github.com/ElamurAI/mova-free/tree/main/prag/src/lib.rs.groupant/exports.groupant)
- **repository commit:** `855da7bd4a7b`

> **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](#forward) |
| **ast** | partial | `../syntax.json` |
| **composition** | partial source model | [composition](#composition) |
| **cost** | partial source model | [cost](#cost) |
| **descriptant** | partial source model | [epoch-memory](#epoch-memory) |
| **invariant** | partial source model | [invariant](#invariant) |
| **tests** | finite observations | [checks](#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-lib-exports-behavior-complement` | behavior_complement | partial source model | [behavior-complement](#behavior-complement) |
| `prag-lib-exports-reverse-reconstruction` | reverse_reconstruction | partial source model | [reverse-reconstruction](#reverse-reconstruction) |

## Model text


### forward
Expose prag modules as Rust public paths. Public composition accepts schema Labels, serializes seven columns, applies silver alignment/voice gates; supplied Word vectors feed roles and world with shared document-key semantics.

Domain: finite supplied valid token/tree/label data or isolated saved run files as scoped above. Observation: returned values, named errors, serialized TSV/JSON and public path composition. Operator: the scoped production functions at the manifest source hash. Approximation semantics: partial source-derived behavioral relation, exact on specified fixtures; no numerical approximation cap.

### invariant
Public schema field indices stay within closed class domains in tests; valid labels round-trip before contextual gating. Tatoeba unquoted voice must be none. Document outputs align by original IDs.

### cost
Module declarations have no runtime work. Composition inherits serialization O(label bytes), gate row/map costs, and role/world context costs; no added acquisition.

### behavior-complement
Schema-valid narrator voice accepted for unquoted Tatoeba and cross-document world carryover are excluded by tested public composition. Export existence alone proves none of these semantics. Universe: scoped inputs paired with candidate observations. This inner exclusion model concerns code behavior, not just test failure; outside the stated assumptions remains unknown.

### reverse-reconstruction
Gate output restricts compatible serialized labels and source contexts but omits rejected details and text. World/role observations admit multiple words/trees. Module names cannot reconstruct implementation behavior. Target relation is {(y,x): F(x)=y} within the domain; no implemented complete preimage solver or injectivity claim.

### composition
Preserve shared schema class, source voice, document identity/order and transport descriptor across producer/consumer boundaries. File headers and filtering wrap delegated library computation. Test fragments use public APIs; source module exports alone establish availability only.

### checks
Five binary and two library wave17_models tests exercise literal options/numbers, Unicode segmentation, supplied CoNLL-U role positions, restricted/full world equality, saved-call metadata, schema/serialization/gate and public role/world wiring. Debug and release are each repeated twice; named outcomes compared. Main duplicate-key first-wins mutation and library transport substitution are compiled rejection controls. See file-root receipts.md.

### epoch-memory
2026-10-30: prospective inspection identified false Claude provenance in gate_report. The old binary fails the Codex transport assertion; repair centralizes descriptor without renaming opus APIs. Compatibility accepts interleaved options, duplicate overwrite and --prefixed values; this behavior is intentionally preserved. No optimization or task-score gain claimed.

### limitations
Supplied fixtures are finite; no proof of linguistic correctness, complete exported API coverage or live dispatch. Environment-derived model/effort and role-alone selection are not varied. Syntax projection omits macro bodies and semantic resolution; groupant source hash binds exact bytes.