Luon is a high-level programming language with a syntax similar to Oberon+, Oberon-07 and Oberon-2, integrating concepts from Lua, and targeting the L

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2024-12-14 00:00:10

Luon is a high-level programming language with a syntax similar to Oberon+, Oberon-07 and Oberon-2, integrating concepts from Lua, and targeting the LuaJIT VM. Luon can be regarded as a statically typed version of Lua. The name is thus a combination of "Lua" and "Oberon".

Luon procedures can be declared "external" and be implemented in Lua. This allows the re-use of libraries written in Lua, and also C libraries via the LuaJIT foreign function interface.

The project is the result of the author's experience with the Smalltalk-80 and SOM VM implementation, and the prospect to build a LuaJIT based Interlisp VM.

In contrast to Oberon+, Luon doesn't have pointers, but instead all structured datatypes have reference semantics and are dynamically created. In addition to the ARRAY type, there is also a HASHMAP type for compatibility with Lua. There is also a STRING data type which - like Lua - is immutable and follows a value semantics.

This project implements a compiler and IDE for the Luon programming language. Representative example projects demonstrating the capabilities of the language and the IDE can be found in the testcases subdirectory.