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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 251

  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 11

  4. eoc eoc Public

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

    JavaScript 36 63

Repositories

Showing 10 of 68 repositories
  • phino Public

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

    objectionary/phino's past year of commit activity
    Haskell 18 13 98 (1 issue needs help) 16 Updated Sep 30, 2026
  • eolang.sty Public

    LaTeX package for drawing πœ‘-calculus formulas and SODG graphs

    objectionary/eolang.sty's past year of commit activity
    TeX 11 MIT 2 24 1 Updated Sep 30, 2026
  • eo Public

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

    objectionary/eo's past year of commit activity
    Java 1,464 MIT 251 111 (16 issues need help) 67 Updated Sep 30, 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 83 (1 issue needs help) 68 Updated Sep 30, 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 10 3 Updated Sep 30, 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 39 131 (22 issues need help) 33 Updated Sep 30, 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 75 (2 issues need help) 9 Updated Sep 30, 2026
  • xax Public

    Java library for testing XSL stylesheets with XML samples and XPath assertions

    objectionary/xax's past year of commit activity
    Java 10 MIT 3 10 3 Updated Sep 30, 2026
  • wpa Public

    Whole Program Analysis (WPA) linters for EO code

    objectionary/wpa's past year of commit activity
    Java 4 MIT 3 9 10 Updated Sep 29, 2026
  • aoi Public

    Abstract Object inference for EO Programs

    objectionary/aoi's past year of commit activity
    Java 12 MIT 5 10 7 Updated Sep 29, 2026
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