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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
  • eo Public

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

    objectionary/eo's past year of commit activity
    Java 1,467 MIT 251 153 (14 issues need help) 67 Updated Oct 2, 2026
  • phino Public

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

    objectionary/phino's past year of commit activity
    Haskell 18 14 60 (2 issues need help) 58 Updated Oct 2, 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 39 138 (22 issues need help) 27 Updated Oct 2, 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) 75 Updated Oct 2, 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 63 76 (7 issues need help) 64 Updated Oct 2, 2026
  • home Public

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

    objectionary/home's past year of commit activity
    Shell 35 MIT 12 9 3 Updated Oct 2, 2026
  • eo-intellij-plugin Public

    Syntax Highlighting Intellij IDEA Plugin for EO Programming Language

    objectionary/eo-intellij-plugin's past year of commit activity
    Java 18 MIT 11 26 (6 issues need help) 6 Updated Oct 2, 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 83 (2 issues need help) 13 Updated Oct 2, 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 2 Updated Oct 2, 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 Oct 2, 2026
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