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Objectionary

EO Programming Language, Its Objects, and πœ‘-Calculus
README.md

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Here are the components around the EO programming language and the πœ‘-calculus it's based on:

  • /eo is the canonical transpiler of EO programs to Java (start here!)
  • /lints is a collection of linting rules for EO
  • /eoc is a command line toolkit for compiling and running EO programs
  • /eo-lsp-server is an LSP server for EO
  • /eo-vscode is an EO plugin for VS Code
  • /eo-intellij-plugin is an EO plugin for JetBrains IDEs
  • /home is where we keep EO sources of all "canonical" objects

Our blog with recent news is here: news.eolang.org. Read our academic papers. Read the book about EO.

Our Twitter tag is #eolang. This is what Hacker News thinks about us.

If you want to discuss, join our Slack workspace and Telegram chat.

By the way, here is the list of things we still haven't had time to implement. You can help!

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  1. eo eo Public

    EOLANG, an Experimental Pure Object-Oriented Programming Language Based on πœ‘-Calculus

    Java 1.5k 252

  2. home home Public

    Centralized curated storage of all EO objects together with their unit tests

    Shell 35 12

  3. eo-intellij-plugin eo-intellij-plugin Public

    Syntax Highlighting Intellij IDEA Plugin for EO Programming Language

    Java 18 10

  4. eoc eoc Public

    Command-line toolkit for parsing, compiling, transpiling, optimizing, linking, dataizing, and running EOLANG programs

    JavaScript 36 64

Repositories

Showing 10 of 68 repositories
  • eo Public

    EOLANG, an Experimental Pure Object-Oriented Programming Language Based on πœ‘-Calculus

    objectionary/eo's past year of commit activity
    Java 1,457 MIT 252 150 (26 issues need help) 89 Updated Sep 16, 2026
  • lints Public

    A collection of style checkers for XMIR: they don't predict runtime errors, but prevent compilation mistakes

    objectionary/lints's past year of commit activity
    Java 14 MIT 39 122 (22 issues need help) 27 Updated Sep 16, 2026
  • jeo-maven-plugin Public

    This Maven plugin converts Java Bytecode binary files to EOLANG programs that use the "opcode" atom

    objectionary/jeo-maven-plugin's past year of commit activity
    Java 23 MIT 19 60 (1 issue needs help) 45 Updated Sep 16, 2026
  • hone-maven-plugin Public

    Maven plugin that applies a number of optimizations to your Bytecode, using EOLANG and πœ‘-calculus, trying to make it work faster

    objectionary/hone-maven-plugin's past year of commit activity
    Java 15 MIT 17 26 (4 issues need help) 19 Updated Sep 16, 2026
  • jucs Public

    JUnit Classpath Sources: a simple framework for using classpath resources as JUnit sources

    objectionary/jucs's past year of commit activity
    Java 9 MIT 6 8 2 Updated Sep 16, 2026
  • reo Public

    Experimental virtual dataflow machine for EO programs, based on SODG

    objectionary/reo's past year of commit activity
    Rust 12 MIT 7 17 4 Updated Sep 16, 2026
  • phino Public

    Command-Line Normalizer, Rewriter, and Dataizer of πœ‘-Calculus Expressions

    objectionary/phino's past year of commit activity
    Haskell 18 12 15 (2 issues need help) 3 Updated Sep 16, 2026
  • eo-lsp-server Public

    LSP server for the EOLANG programming language: works with VS Code, Sublime Text, IntelliJ IDEA and other IDEs

    objectionary/eo-lsp-server's past year of commit activity
    TypeScript 6 MIT 13 45 (7 issues need help) 11 Updated Sep 16, 2026
  • eoc Public

    Command-line toolkit for parsing, compiling, transpiling, optimizing, linking, dataizing, and running EOLANG programs

    objectionary/eoc's past year of commit activity
    JavaScript 36 MIT 64 68 (7 issues need help) 55 Updated Sep 16, 2026
  • reducing-programs-to-objects Public

    LaTeX paper on how to reduce programs to EO objects

    objectionary/reducing-programs-to-objects's past year of commit activity
    TeX 15 MIT 7 2 4 Updated Sep 16, 2026
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