Implementation of a pure functional language interpreter in rust

Opl (pronounced "opal") is a purely functional languague focused on analytical types and pure functions. This focus is both the study of Function PL and building interpreters. Rust was chosen excellent compile times and ergonomics

Codebase

docs

• candidates : grammar addition candidates
• grammar: syntax of language (simple form of specification)
• specification: lexicon

src

• lexer: tokens, parsing a stream of opl code into tokens
• ast: self explanetory
• parser: producing a interpreted program based on the source code and ast
• repl/main: execute parser

tests

• opl_by_example: mirroring the now famous go_by_example webpage
• (some_grammar).opl: Opl file containing examples for one specific file

The Opl Toolchain

Opl is a general purpose functional programming language.

Usage: opl [COMMAND]

Commands:
  repl  
  run   
  zen   
  help  Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help
  -V, --version  Print version