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

# onto-store-shape

The groupant beside onto/src/store.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:** [`onto/src/store.rs`](https://github.com/ElamurAI/mova-free/blob/main/onto/src/store.rs)
- **source SHA-256:** `19eeabb5cd6e93ad…`
- **covers:** For each CSR off require len=rows+1,start0,end=total,monotone; validate UTF8/refs (bytes 988–8930)
- **part of:** [onto-store](https://md.groupants.elamur.ai/free/en/mova/onto/src/store.rs.groupant/)
- **repository folder:** [`onto/src/store.rs.groupant/shape.groupant`](https://github.com/ElamurAI/mova-free/tree/main/onto/src/store.rs.groupant/shape.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) |
| `offset_domain` | offset_domain | partial source derived model | [offset_domain](#offset-domain) |
| `reference_domain` | reference_domain | partial source derived model | [reference_domain](#reference-domain) |
| `semantic_gap` | semantic_gap | partial source derived model | [semantic_gap](#semantic-gap) |
| `failure_order` | failure_order | partial source derived model | [failure_order](#failure-order) |

## Model text


### descriptant

#### onto-store-shape

For each CSR off require len=rows+1,start0,end=total,monotone; validate UTF8/refs

##### Epoch 2026-10-31

Specialized source fragment bytes [988,8930); shared parent AST. Excludes unrelated parent operations and added test module.

### approximant

#### Scoped forward

For each CSR off require len=rows+1,start0,end=total,monotone; validate UTF8/refs

##### Domain

This byte-scoped operator uses the parent valid-state domain plus the following local restrictions:

String offsets must char boundaries

mem<nw,senses<n,edge.to<n,LU refs bounded

Keys/lexfiles/inverse CSR/cycles not checked

Scalar lengths→offsets→UTF8→word/concept refs→edge/LU refs

No executable percentage surrogate established.

### invariant

#### Local observations

Invalid offset/reference excludes Ok; valid shape does not exclude inverse-edge mismatch

String offsets must char boundaries

mem<nw,senses<n,edge.to<n,LU refs bounded

Keys/lexfiles/inverse CSR/cycles not checked

Scalar lengths→offsets→UTF8→word/concept refs→edge/LU refs

### cost

#### Scoped cost

O(offsets+references+string boundary checks), no graph reachability traversal.

Restriction to this operator's traversed inputs; parent total is not charged to every fragment. No standalone measurement.

### composition

#### Parent join

shape supplies the parent relation: For each CSR off require len=rows+1,start0,end=total,monotone; validate UTF8/refs

Output compatibility is conditional on the local domain and earlier-branch exclusions. Other parent branches are outside this fragment.

### models

### behavior_complement

Invalid offset/reference excludes Ok; valid shape does not exclude inverse-edge mismatch

### reverse_reconstruction

Ok preimage entire set of shape-consistent graphs; not unique/sorted/DAG ontology

### offset_domain

String offsets must char boundaries

### reference_domain

mem<nw,senses<n,edge.to<n,LU refs bounded

### semantic_gap

Keys/lexfiles/inverse CSR/cycles not checked

### failure_order

Scalar lengths→offsets→UTF8→word/concept refs→edge/LU refs


### tests

#### Evidence

Parent tests.md identifies selected actual-code checks. Fragment is a source-scoped partial model; parent finite fixtures do not establish exhaustive branch coverage or every local equation.