How is Rune language executed in low level?

[evan0greenup]

Is Rune language firstly interpreted by Interpreter? Or firstly translate into bytecode, then executed in vm? Or compile to machine code, and directly run by machine?

[udoprog]

The language is compiled and translated to bytecode (or an array of instructions) which are executed sequentially. Memory is stored on a stack. The core logic of the virtual machine is actually fairly easy to follow here.

You can see the instructions by checking "Instructions" in the playground.

[evan0greenup]

@udoprog , how is the performance is it slower than Rust? If so, how much slower?

[udoprog]

You should expect an order of magnitude slower than any language executing natively, and about an order of magnitude faster than AST walkers / eval loops.

A little bit faster than Python and a little bit slower than Lua in my experience.