---
title: "treestore-lib — Mova code model"
description: "Mova code model of tools/treestore/src/lib.rs: components with their labels, obernants and the model text."
url: "https://groupants.elamur.ai/free/en/mova/tools/treestore/src/lib.rs.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**

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# treestore-lib

The groupant beside tools/treestore/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
- **status:** partial source bound model
- **source:** [`tools/treestore/src/lib.rs`](https://github.com/ElamurAI/mova-free/blob/main/tools/treestore/src/lib.rs)
- **repository folder:** [`tools/treestore/src/lib.rs.groupant`](https://github.com/ElamurAI/mova-free/tree/main/tools/treestore/src/lib.rs.groupant)

> **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** | symbolic source derived | [Invariant](#invariant) |
| **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.

| relation | 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) |

## Model text


### Descriptant

The crate root: module list of the compressed, randomly accessible store of annotated articles. Epoch 2026-11-06.

### Approximant

No behaviour of its own; the crate's relation is the composition of its modules (cols, json, frag, cm, model, codec,
store, dir).

### Invariant

Every module is public so a pass can write stores directly (`store::Writer`) and readers can open them (`dir::Store`).

### Composition

cols ← json ← frag ← cm ← model ← codec ← store ← dir; main.rs is the CLI.

### Behavior complement

Declares nothing executable.

### Reverse reconstruction

Inapplicable beyond the module list.

### Tests

All crate tests (`cargo test -p treestore`).

## Provenance

- **source SHA-256:** `fa3b2ab1bc6e9ca5…`
- **repository commit:** `f55191f0d47f`