# The Generic Programming Language

This is the main source code repository for **Generic**. It contains the interpreter and will at some point contain the
standard library, and documentation.

## Influence

**Generic** is based on the Lox programming language created by [Bob Nystrom](https://twitter.com/intent/user?screen_name=munificentbob) for his excellent book [Crafting Interpreters](https://craftinginterpreters.com).

This implementation is written in [Rust](https://github.com/rust-lang/rust) and *very* closely based on [clox-rs](https://github.com/abesto/clox-rs/). The walkthrough of the book alongside clox-rs can be found in the previous [repo](https://github.com/JanEricNitschke/CraftingInterpreters).

## Syntax highlighting

A rudimentary vscode extension exists in the form of [generic-lang-vscode](https://github.com/JanEricNitschke/generic-lang).

## Building

The interpreter can be build like this:
```bash
cargo build --release
```

## Testing

A test suite and driver for the implementation can be found in [test](test) and [tool](tool) respectively.
The driver is written in [Dart](https://dart.dev/) and taken directly from the [book repo](https://github.com/munificent/craftinginterpreters) of Crafting Interpreters.
The suite is an extension of the one that can be found in the same repository.

To run it:
```bash
make test
```

## Benchmark

Benchmarking **Generic** against the official [c](https://github.com/munificent/craftinginterpreters/tree/master/c) and [java](https://github.com/munificent/craftinginterpreters/tree/master/java/com/craftinginterpreters) lox implementations as well as, to a limited degree, [python](https://www.python.org/) and [ruby](https://www.ruby-lang.org/) is also possible. The reference programs for that can be found in [benchmark](benchmark).

The benchmarking setup is driven by [hyperfine](https://github.com/sharkdp/hyperfine) which has to be installed and added to the path separately.
This also holds for ruby and python.

However, the main benchmarking is against the lox implementations. For those runs to be possible the two versions have to be install from the [book repo](https://github.com/munificent/craftinginterpreters)
and placed into the (relative) path

`{generic-lang}/reference/craftinginterpreters`.

Running the benchmark on linux is done via:
```
make benchmark-ci
```

To run the benchmarking on windows a `jlox.bat` with the following content:
```bat
@echo off

set "script_dir=%~dp0"
java -cp "%script_dir%\build\java" com.craftinginterpreters.lox.Lox %*
```

first has to be placed in the `craftinginterpreters` directory.

The benchmarking is then run via:
```bash
make benchmark
```

## Installation

I recommend installing Generic by building from the source code as follows:

```bash
# Download the source code
git clone https://github.com/JanEricNitschke/generic-lang
cd generic-lang

# Install 'generic'
cargo install --path .
```

Now to use generic, in your terminal, run:
```bash
generic
```