Majestik - a Magik implementation

Majestik is an attempt to implement the Magik programming language¹, using Magik-Tools² and Java's Class-File API³. It is currently in the very early stages of development and lacks most features.

Components

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Majestik is composed of two core components:

1. Compiler: This component translates the AST produced by Magik-Tools' Magik-Squid into JVM bytecode using the Class-File API.

   Currently, only supports literal types boolean, string, integer and float; as well as the invoke and the if/then/else expressions.

2. Runtime: provides a standard library with basic functionality to run a Magik program.

   As of now, only the write variable in the sw package has a barebones implementation.

Features

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In the project's current state, it is possible (and pretty much limited just to) run a Magik "Hello World" example program⁴.

_block
  world << "World!"
  write("Hello")
  write(world)

  int << 12345
  write(int)

  flt << 5.4321
  write(flt)

  bool << _false
  _if bool
  _then
    write("fail")
  _else
    write("success")
  _endif
_endblock

Compiling

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mvn package

Running

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java --enable-preview -jar target/majestik-0.0.0-SNAPSHOT.jar helloworld.magik

FAQ

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• Q: Why does Majestik require JDK 24? A: Majestik uses the Class-File API³, which was introduced as a permanent feature in Java 24.

• Q: Can generated class files be used in a (Smallworld) Magik session? A: Yes, they can be used in a Magik session, provided the Magik session is started with JDK 24.

Footnotes

1. Magik (programming language) on Wikipedia ↩

2. Magik-Tools ↩

3. Class-File API ↩ ↩²

4. Magik Hello World example ↩