2021-08-23 20:30:27 +02:00
|
|
|
# THIS REPO IS OUT OF DATE AND KEPT ONLY FOR HISTORICAL PURPOSES. FOR AN UP-TO-DATE VERSION OF JAPL, CLICK [HERE](https://github.com/japl-lang/japl)
|
2020-10-22 10:19:00 +02:00
|
|
|
# japl
|
|
|
|
|
JAPL is an interpreted, dynamically-typed, garbage-collected and minimalistic programming language with C- and Java-like syntax.
|
|
|
|
|
|
|
|
|
|
# J.. what?
|
|
|
|
|
|
|
|
|
|
You may wonder what's the meaning of JAPL: well, it turns out to be an acronym
|
|
|
|
|
for __Just Another Programming Language__, but beware! Despite the name, the pronounciation is actually the same as "JPL".
|
|
|
|
|
|
|
|
|
|
## Some backstory
|
|
|
|
|
|
|
|
|
|
JAPL is born thanks to the amazing work of Bob Nystrom that wrote a book available completely for free
|
|
|
|
|
at [this](https://craftinginterpreters.com) link, where he describes the implementation of a simple language called Lox.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
### What has been (or will be) added from Lox
|
|
|
|
|
|
|
|
|
|
- Possibility to delete variables with the `del` statement (Currently being reworked)
|
|
|
|
|
- `break` statement
|
|
|
|
|
- `continue` statement
|
|
|
|
|
- Multi-line comments (`/* like this */`)
|
|
|
|
|
- Nested comments
|
|
|
|
|
- Modulo division (`%`) and exponentiation (`**`)
|
|
|
|
|
- `OP_CONSTANT_LONG` is implemented
|
|
|
|
|
- Differentiation between integers and floating point numbers
|
|
|
|
|
- `inf` and `nan` types
|
|
|
|
|
- Possibility to have more than 255 locals in scope at any given time
|
|
|
|
|
- String slicing, with start:end syntax as well
|
|
|
|
|
- Strings are not interned (may change in the future)
|
|
|
|
|
- All entities are actually objects, even builtins
|
|
|
|
|
- Bitwise operators (AND, OR, XOR, NOT)
|
|
|
|
|
- Functions default and keyword arguments (__WIP__)
|
|
|
|
|
- A proper import system (__Coming soon__)
|
|
|
|
|
- Native asynchronous (`await`/`async fun`) support (__Coming soon__)
|
|
|
|
|
- Multiple inheritance (__Coming Soon__)
|
|
|
|
|
- Bytecode optimizations such as constant folding and stack caching (__Coming Soon__)
|
|
|
|
|
- Arbitrary-precision arithmetic (__Coming soon__)
|
|
|
|
|
- Generators (__Coming soon__)
|
|
|
|
|
- A standard library with collections, I/O utilities, scientific modules, etc (__Coming soon__)
|
|
|
|
|
- Multithreading and multiprocessing support with a global VM Lock like CPython (__Coming soon__)
|
|
|
|
|
- Multiple GC implementations which can be chosen at runtime or via CLI: bare refcount, refcount + generational GC, M&S (__Coming soon__)
|
|
|
|
|
- Exceptions (__Coming soon__)
|
|
|
|
|
- Optional JIT Compilation (__Coming soon__)
|
|
|
|
|
- Some syntax changes (maybe), e.g. get rid of semicolons
|
|
|
|
|
- Prototypes based system instead of classes (maybe)
|
|
|
|
|
|
|
|
|
|
Other than that, JAPL features closures, function definitions, classes, inheritance and static scoping. You can check
|
|
|
|
|
the provided example `.jpl` files in the repo to find out more about its syntax.
|
|
|
|
|
|
|
|
|
|
### Disclaimer
|
|
|
|
|
|
|
|
|
|
This project is currently a WIP (Work in Progress) and is not optimized nor complete.
|
|
|
|
|
The first version of the interpreter is written in Python, but a bytecode stack-based VM written in nim is being developed right now.
|
|
|
|
|
|
|
|
|
|
Also, the design of the language may change at any moment and all the source inside this repo
|
|
|
|
|
is alpha code quality, for now.
|
|
|
|
|
|
|
|
|
|
For other useful information, check the LICENSE file in this repo.
|
|
|
|
|
|
|
|
|
|
### Contributing
|
|
|
|
|
|
|
|
|
|
If you want to contribute, feel free to send a PR!
|
|
|
|
|
|
|
|
|
|
Right now there are some major issues with the virtual machine which need to be addressed
|
|
|
|
|
before the development can proceed, and some help is ~~desperately needed~~ greatly appreciated!
|
|
|
|
|
|
|
|
|
|
You can also contact me using the information available [here](https://github.com/nocturn9x)
|
