# cljcc

A toy C Compiler implementation in Clojure.

Follows the book [Writing a C Compiler by Nora Sandler](https://nostarch.com/writing-c-compiler).

## Prerequisites

* [Clojure](https://clojure.org)
* [GraalVM](https://www.graalvm.org) for building native binary
* [babashka](https://github.com/babashka/babashka#installation) 
    
Only Linux and Mac OS is supported. For Windows, run through WSL. 
    
## Tasks

To see all available tasks in the project, run `bb tasks`:

``` sh
bb tasks
The following tasks are available:

clean         Removes target folder.
run-main      Run main
build-uberjar Builds uberjar
run-uberjar   Run uberjar
build-native  Builds native image

```

## Build

To build native image, run:

``` sh
bb build-native
```

This produces a binary `cljcc` at `/target/cljcc`. Pass the path to the C file.

``` sh
./target/cljcc/cljcc "path/to/file.c"
```

## Run 

``` sh
bb run-main "path/to/file.c"
```

## References

Some talks / projects which helped in implementation.

* [What's So Hard About Writing A Compiler, Anyway? Oh - Ramsey Nasser](https://www.youtube.com/watch?v=_7sncBhluXI)
* [Clojure Lexer implementation by Vikasg7](https://github.com/ThePrimeagen/ts-rust-zig-deez/tree/master/clj)