Implements a polyglot REPL which supports multiple languages and shared meta-object protocol scope between REPLs.

Related tags

Miscellaneous nodejs ruby python repl polyglot multilanguage metacall
Overview

MetaCall Polyglot REPL

image

Description

This repository implements a Polyglot REPL which shares the state of the meta-object protocol between the REPLs. Using the Polyglot REPL, you can share state between multiple languages through their individual REPL and mix code straight from your terminal.

The high-level api.js provided in the src provide five functions:

  • initialize: To initialize the Polyglot REPL
  • select: To select the individual language REPL; Currently Python (py) and JavaScript (node) are supported.
  • execute: To execute a line, function or module after a REPL has been selected.
  • destroy: Destroy the REPL and exit gracefully.
  • available: Check all the available REPLs.

The cli.js provided in the src provides a way to develop your own REPLs and execute code straight from the command line. You can sutomize the existing REPL or define a new one.

The entry script index.js provides an abstraction over the usage of the high-level APIs defined above through the following commands:

  %repl 
   
    : Switch from different REPL (available tags: node py)
  %inspect: Show available functions
  %available: Show available REPLs
  %eval 
     
     : Load inline code, useful for loading inter-language functions for the REPL
  %load 
       
        
        
          ... 
         
          : Load a file, useful for loading inter-language functions for the REPL %exit: Finalizes the REPL

Installation

  1. Install MetaCall:

    curl -sL https://raw.githubusercontent.com/metacall/install/master/install.sh | sh

  2. For running it:

    metacall index.js

LICENSE

Apache 2.0
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Comments
  • Package this properly so it can be reused in the CLI on the Core or Jupyter Kernel

    Package this properly so it can be reused in the CLI on the Core or Jupyter Kernel

    This project should be separated so we have a folder lib with the API and the index.js as the binary for launching this. It should be highly configurable and embeddable on other projects.

    opened by viferga 1
  • README Updates and API Docs

    README Updates and API Docs

    Description

    This PR adds the README updates and the API Docs. A GIF has been added as well to display the functionality of the Polyglot REPL for better understanding.

    opened by HarshCasper 0
  • MetaCall Core seems to fail in order to close the application gracefully

    MetaCall Core seems to fail in order to close the application gracefully

    I have found this bug while implementing this project, here's the logs:

    There are 9 handle(s) keeping the process running

# FSREQWRAP
~/Downloads/metacall-polyglot-repl/index.js:15 - fs.readdir(scriptsPath, (err, files) => {
~/Downloads/metacall-polyglot-repl/index.js:12 - const load = () => new Promise((resolve, reject) => {
~/Downloads/metacall-polyglot-repl/index.js:43 - const functions = await load();
~/Downloads/metacall-polyglot-repl/index.js:52 - })();

# INSPECTORJSBINDING
~/Downloads/metacall-polyglot-repl/scripts/repl.js:8 - const r = repl.start({

# TickObject
(unknown stack trace)

# Immediate
~/Downloads/metacall-polyglot-repl/scripts/repl.js:22 - setImmediate(callback);

# Immediate
~/Downloads/metacall-polyglot-repl/scripts/repl.js:17 - setImmediate(() => this.push(null));

# TickObject
(unknown stack trace)

# TickObject
(unknown stack trace)

# TickObject
(unknown stack trace)

# TickObject
~/Downloads/metacall-polyglot-repl/scripts/repl.js:37 - return r.close();
~/Downloads/metacall-polyglot-repl/index.js:47        - await functions['node_repl_close']();

    Once this is completely solved, remove this line: https://github.com/metacall/polyglot-repl/blob/ffa9cc1c97c8f347837e51664312097a312a3113/index.js#L84

    opened by viferga 0
Owner
MetaCall
MetaCall
GitHub
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