# Roussillon : Type System

> **This crate is an incomplete library** with a clear goal of helping create a programming language.

This crate provides some structs and traits to manage types and typed values.

This crate goal **IS NOT** to manage memory allocation.

## Type system

### Types module

This module offers a way to mark some data with a type.

#### Primitive types

These are the necessary types to construct any other meaningful type.
Usually, these are "machine types" :

- Boolean
- Byte
- Bytes
- Float
- Integer
- Reference
- List

#### The "tuple" type

- Tuple

#### Algebraic Data Types

- SumType
- ProductType

#### Custom types (ADT with an Identifier)

- Enumeration (values are called unions)
- Structure

#### Functional

- FunctionType

### Value module

The **value** module provides ways to create values from all types in the **types** module.

The provided constructible values are :

- Boolean
- Bytes (arbitrarily size)
    - Byte (8 bits)
    - Word (16)
    - Quad (32)
    - Long (64)
    - Wide (128)
- Integer
- Float
- Reference
- List
- Sequence (Tuple values)
- Sum (SumpType values)
- Product (ProductType values)
- Union (Enumeration values)
- Record (Structure values)
- FunctionBody

## License

(c) 2024 Sébastien Geldreich

This work is published under the MIT License.