https://github.com/ZaneDubya/LoxScript

A bytecode compiler and virtual machine for the Lox language, in C#. Includes a C# / Lox object interface generator and bytecode serialization.
https://github.com/ZaneDubya/LoxScript

bytecode compiler lox lox-language virtual-machine

Last synced: 2 months ago
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A bytecode compiler and virtual machine for the Lox language, in C#. Includes a C# / Lox object interface generator and bytecode serialization.

• Host: GitHub
• URL: https://github.com/ZaneDubya/LoxScript
• Owner: ZaneDubya
• License: mit
• Created: 2020-04-20T21:54:14.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2025-03-02T21:27:24.000Z (4 months ago)
• Last Synced: 2025-04-25T00:53:16.304Z (2 months ago)
• Topics: bytecode, compiler, lox, lox-language, virtual-machine
• Language: C#
• Homepage:
• Size: 443 KB
• Stars: 19
• Watchers: 3
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# LoxScript

LoxScript is a bytecode compiler and virtual machine ("Gears") for Bob Nystrom's [Lox language](http://craftinginterpreters.com/the-lox-language.html), both written in C#.

The LoxScript bytecode virtual machine is called [Gears](https://github.com/ZaneDubya/LoxScript/tree/master/XptScriptLib/Core/Scripting/LoxScript/VirtualMachine). Gears executes bytecode created by the LoxScript compiler. The output of Gears matches the reference "clox" virtual machine described in Chapters 14-30 of Bob's book [Crafting Interpreters](http://craftinginterpreters.com). However, the internal implementation of the virtual machine is different, and the bytecode generated by the Gears compiler will not run on clox.

Improvements over Lox/clox:

- Compiler can write bytecode to a binary file and load/run this at runtime.

- Native interfaces allow Lox files to interact with native C# functions and objects.

- Support for switch statement! This only took hours, and the code is horrifying.

Performance:

- Gears runs the reference 'fibonnaci' benchmark roughly 69x slower than native c# code.