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

# cycle-main-parser-input

The groupant beside tools/cycle/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:** [`tools/cycle/src/main.rs`](https://github.com/ElamurAI/mova-free/blob/main/tools/cycle/src/main.rs)
- **source SHA-256:** `50b547fdb98931f0…`
- **covers:** Create in/out/log, collect sent_ids and ten-column ordinary-row forms, flush nonempty groups on blank line plus sentinel, check equal count, write ids then tokens. (bytes 11146–12440)
- **part of:** [cycle-main](https://md.groupants.elamur.ai/free/en/mova/tools/cycle/src/main.rs.groupant/)
- **repository folder:** [`tools/cycle/src/main.rs.groupant/parser-input.groupant`](https://github.com/ElamurAI/mova-free/tree/main/tools/cycle/src/main.rs.groupant/parser-input.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` |
| **cost** | partial | [invariant-and-cost](#invariant-and-cost) |
| **descriptant** | present | [descriptant](#descriptant) |
| **invariant** | partial | [invariant-and-cost](#invariant-and-cost) |
| **tests** | bounded or representation | [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) |
| `sentinel_flush` | sentinel_flush | partial source derived model | [sentinel_flush](#sentinel-flush) |
| `row_filter` | row_filter | partial source derived model | [row_filter](#row-filter) |
| `effect_order` | effect_order | partial source derived model | [effect_order](#effect-order) |
| `cardinality_only` | cardinality_only | partial source derived model | [cardinality_only](#cardinality-only) |

## Model text


### descriptant

#### cycle-main-parser-input

##### Epoch 2026-10-31

Prospective inspection identified this relation before additions: Create in/out/log, collect sent_ids and ten-column ordinary-row forms, flush nonempty groups on blank line plus sentinel, check equal count, write ids then tokens.

The production implementation is unchanged; only selected inline tests are appended. Source-bound syntax is generated twice and compared. Native checks exercise bounded helpers; entry orchestration, teacher calls, models and corpora remain source-derived. Partial syntax is not semantic proof. Preserve failure prefixes and ambiguity when refining this model.

### approximant

#### Forward relation

Create in/out/log, collect sent_ids and ten-column ordinary-row forms, flush nonempty groups on blank line plus sentinel, check equal count, write ids then tokens.

##### Composition

This fragment isolates the stated helper relation; parent composition retains surrounding effects and failures.

### catalog

## Typed observations: cycle-main-parser-input

Subject: tools/cycle/src/main.rs, SHA-256 c901ffdda1a67fa69ed553c5d0c8e7e83d1aa0c23ce8a7bc74d53f30e5c5b108. Domain: bounded source inputs, declared filesystem/environment state and normal allocations. Each view is a partial source-derived relation, not a universal proof. Observation is one helper call or the explicitly described trace. Checks are in tests.md; unexecuted effects remain gaps.

### behavior_complement

Count mismatch cannot return Ok or write new ids/tokens. Preexisting files are not deleted.

Scope: the bound source interval and stated assumptions. Evidence: source inspection plus the checks explicitly named in tests.md; no finite check establishes all inputs.

### reverse_reconstruction

ids/tokens admit arbitrary omitted comments, lemmas/features/heads and excluded rows. Joining forms with spaces loses embedded whitespace distinctions.

Scope: the bound source interval and stated assumptions. Evidence: source inspection plus the checks explicitly named in tests.md; no finite check establishes all inputs.

### sentinel_flush

Trailing nonempty group flushes without final blank line; repeated blank lines do not add empty sentences.

Scope: the bound source interval and stated assumptions. Evidence: source inspection plus the checks explicitly named in tests.md; no finite check establishes all inputs.

### row_filter

Exactly ten columns and id lacking '-' or '.' suffice; numeric positivity is not checked.

Scope: the bound source interval and stated assumptions. Evidence: source inspection plus the checks explicitly named in tests.md; no finite check establishes all inputs.

### effect_order

Three mkdir operations precede parsing; ids write precedes tokens write, so failure can expose partial pair.

Scope: the bound source interval and stated assumptions. Evidence: source inspection plus the checks explicitly named in tests.md; no finite check establishes all inputs.

### cardinality_only

Matching ids and groups count does not establish each id occurs before corresponding group; malformed metadata ordering can pass.

Scope: the bound source interval and stated assumptions. Evidence: source inspection plus the checks explicitly named in tests.md; no finite check establishes all inputs.

### tests

#### Checks and limits

tests::parser_input_matches_ids covers two groups and mismatch; compiled cardinality mutant should fail.

Exact native outcomes and command metadata are retained in the external wave33 cycle receipt bundle. Selected names run twice in debug and release; syntax is independently regenerated twice. Compiled mutations and source restoration receipts distinguish behavior changes from assertion-only controls. These claims are finalized in evidence.md. No live teacher, real model/corpus, benchmark CLI or lesson-learning CLI is run.

### invariant-and-cost

#### Invariant and cost

Bad count returns error after dirs exist and before two writes. Multiword/range/empty-node ids omitted.

O(input bytes), O(ids+tokens) allocations and output I/O.

No executable percentage surrogate is claimed: effects, categorical acceptance and report text have no justified approximate metric here. Future profiles require a useful metric, zero case, reference and evidence at caps 1/2/5/10%.