An interpreted LISP-like language. Made in Rust.

Related tags

Parsing rust lisp interpreter wip lexer-parser
Overview

RISP

Warning: The language is a work in progress. It's lacks many features and might not be stable.

RISP is an interpreted LISP-like language. It's written in Rust.

Features

Checked entries have been implemented.

  • Integers and Strings
  • Floats
  • Better error reporting
  • Operators
  • Variables
  • if-else expressions
  • while and for loops
  • Functions
  • Macros
  • Classes

Usage

Rust must be installed for compiling the code. The latest version is recommended. Installing cargo is also recommended.

  1. Clone the repo

    git clone https://github.com/shivrm/risp

    GitHub also lets you download the source code as a ZIP.

  2. Navigate to project folder

    cd risp

  3. Build and run with cargo

    • Run without any arguments to start the REPL. This lets you interactively run statements - one at a time.

      cargo run

    • To execute code from a file, give the file path as a command-line argument. Replace <file> with the path to the file:

      cargo run <file>

    • Giving bench as a command-line argument will benchmark the lexer. Note that this might be performance intensive.

      cargo run bench

Examples

See scripts/example.risp for an example RISP script. Run it with

cargo run scripts/example.risp

License

RISP is licensed under the MIT license. See LICENSE.md

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Comments
  • Make lexer faster, Allocate to make borrow checker happy on parser

    Make lexer faster, Allocate to make borrow checker happy on parser

    I just had to do this.

    Change it up however you'd like The lexer now lexes at ~395 MBps with some processes running in the background on my PC Check if it contains any bugs I did not try to change the overall code, but changed everything enough to make the borrow checker happy Including the fact that I had to allocate a string in the parser :( (you could store values as spans in the parser to overcome this, probably) The changes could be enough to introduce bugs in other parts of your code, so change it however you wish

    opened by dquat 1
Owner
Shivram
Amateur computer programmer and full time student who codes in Rust, Python, and JavaScript.
Shivram
GitHub
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