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

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

Owner
MetaCall
MetaCall
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