---
title: "kg-main-parse-lines — Mova code model"
description: "Mova code model of kg/src/main.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/kg/src/main.rs.groupant/parse-lines.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/kg/src/main.rs.groupant/parse-lines.groupant/>

# kg-main-parse-lines

The groupant beside kg/src/main.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:** [`kg/src/main.rs`](https://github.com/ElamurAI/mova-free/blob/main/kg/src/main.rs)
- **source SHA-256:** `2b0c3334d8294c57…`
- **covers:** Arbitrary TSV helper and synthetic Morph→parse→report composition. (bytes 13369–14850)
- **part of:** [kg-main](https://md.groupants.elamur.ai/free/en/mova/kg/src/main.rs.groupant/)
- **repository folder:** [`kg/src/main.rs.groupant/parse-lines.groupant`](https://github.com/ElamurAI/mova-free/tree/main/kg/src/main.rs.groupant/parse-lines.groupant)
- **repository commit:** `48f2e6f74146`

> **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 | [approximant](#approximant) |
| **ast** | partial | `../syntax.json` |
| **composition** | partial | [composition](#composition) |
| **cost** | partial | [cost](#cost) |
| **descriptant** | present | [descriptant](#descriptant) |
| **invariant** | partial | [invariant](#invariant) |
| **tests** | executed bounded checks | [tests](#tests) |

## 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](#behavior-complement) |
| `reverse_reconstruction` | reverse_reconstruction | partial source derived model | [reverse_reconstruction](#reverse-reconstruction) |
| `first_tab` | first_tab | partial source derived model | [first_tab](#first-tab) |
| `read_failure` | read_failure | partial source derived model | [read_failure](#read-failure) |
| `status_projection` | status_projection | partial source derived model | [status_projection](#status-projection) |
| `synthetic_scope` | synthetic_scope | partial source derived model | [synthetic_scope](#synthetic-scope) |

## Model text


### descriptant

#### kg-main-parse-lines

Arbitrary TSV helper and synthetic Morph→parse→report composition.

##### Modeling epoch — 2026-10-31

Source read before tests and models; retained prospective notes accompany the parent. Current evidence uses bounded invented inputs only. This is partial modeling, not proof or corpus accuracy.

### approximant

#### Forward relation

Read valid first-tab rows until line read failure, load names, collect normalized vocab, Morph::load, then create output and emit ok/members or reject reason.

##### Executable approximant gap

Exact categorical structure, identifiers, parser decisions and effects have no useful percentage metric established here. No executable surrogate, automatic substitution or 1/2/5/10% guarantee is claimed.

### invariant

#### Invariant and domain

Output has one row per retained TSV row; malformed no-tab rows skipped; synthetic2-row fixture retains ids and question rejection.

##### Cost and resources

O(input bytes)+two dictionary passes+parse costs; all rows retained before output.

### cost

#### Cost and resources

O(input bytes)+two dictionary passes+parse costs; all rows retained before output.

### composition

#### Composition

Arbitrary TSV helper and synthetic Morph→parse→report composition.

Read valid first-tab rows until line read failure, load names, collect normalized vocab, Morph::load, then create output and emit ok/members or reject reason.

The parent invokes scoped transformations through the actual functions named in their source ranges. Children partition useful observations, not a complete semantic proof; boundaries can omit helpers, tests and effects.

### models

### behavior_complement

No output is created before input/names/Morph succeed. ok does not imply render_check; no grammar completeness validation here.

### reverse_reconstruction

Output ignores malformed rows/read-error tail and original morphology alternatives; id and text retained for accepted rows.

### first_tab

Text may contain additional tabs because split_once retains suffix.

### read_failure

map_while(Result::ok) stops silently at first I/O error rather than propagating it.

### status_projection

Reject::code collapses detailed unknown/conjunction words into category labels.

### synthetic_scope

Actual tiny bz2 dictionary and names file are used; no stored graph is modified by this helper.


### tests

#### Evidence

Parent source checks (a fragment inherits only the behavior they actually exercise):

- wave29::synthetic_reader_parse_and_sub_precedence

Selected kg tests: 15 named outcomes, twice debug/twice release, equal sorted outcomes. Standalone actual global/build.rs: 3 named outcomes per run, twice debug/twice optimized; build_child is normally no-op, parent fixture invokes it against isolated synthetic seeds. Eight compiled source mutations (one per source) each compiled successfully and exited101 on the focused assertion; exact source restoration followed by positive rerun.

This fragment's untested branches remain source-derived. No live graph, DB, corpus, teacher, GPU or held-out evaluation was used. Command specs and numeric exits are retained in the external wave29 graphlang receipt. Strict kg Clippy reports existing source lints; see receipt.