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piltover

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Starknet Core Contract components in Cairo.

// repository documentation

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</div>

## Overview

Starknet Core Contract components in Cairo.

## Repository architecture

The different tasks of the Starknet Core Contract are here mapped to what we can call an "Appchain" Core Contract.

The functionalities of the core contract are split over several components. Each component is usually placed into a directory, event if it is simple. Doing so allow a good separation of additional files that may be written in the context of a component.

Due to a limitation of `starknet foundry`, we can't declare a contract that is defined under the `tests` directory. For this reason, `mock` contract are defined in their respective component location. This is also a good way for the component write to illustrate the minimum required to use the component.

- `appchain.cairo`: core contract of the appchain on Starknet.

- `config`: base configuration for the core contract.

- `messaging`: messaging between Appchain - Starknet.

## Build

To build the project, run:

```bash
scarb build
```

## Bindings (Rust)

Bindings are updated by running the following command:

```bash
bash scripts/generate_bindings.sh
```

This will update the code for the bindings in the `piltover-rs` crate.

## Test

To test the project, run:

```bash
scarb test --all-features
```

Or using the script (where further tests may be added in the future):

```bash
bash scripts/test_all_features.sh
```

## Code style (cairo)

- Use `snake_case` for module name and not `PascalCase`.

- Don't import directly a function from a module.

```rust
// Prefer that:
let addr = starknet::contract_address_const::<0>();

// Instead of:
use starknet::contract_address_const;
let addr = contract_address_const::<0>();
```

- Document functions inside the trait, and add details if needed in the implementation.

To enforce the cairo linter, please use:

```bash
bash scripts/cairo_fmt.sh --fix
```

## Audits

- [2025-06 - Audit by Nethermind](https://github.com/NethermindEth/PublicAuditReports/blob/main/NM0544A-FINAL_PILTOVER.pdf)

## License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.

piltover

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