I'm looking for a VM with the following features:
So far I have reviewed Lua, Squirrel, Neko, Pawn, Io, AngelScript... and the only one which comes somewhat close to the spec is Lua, but the syntax is horrible, it does not have bitwise support, and the code style generally sucks. Squirrel and IO are huge, mostly. Pawn is problematic, it is small, but bytecode is not cross platform and the implementation has some serious issues (ex bytecode is not validated at all, not even the headers AFAIK).
I would love to find a suitable option out there.
Thanks!
Update: Javascript interpreters are... interpreters. This is a VM question for a bytecode-based VM, hence the compiler/bytecode vm separation requirement. JS is interpreted, and very seldom compiled by JIT. I don't want JIT necessarily. Also, all current ECMAScript parsers are all but small.
You say you've reviewed NekoVM, but don't mention why it's not suitable for you.
It's written in C, not C++, the VM is under 10kLOC with a compiled size of roughly 100kB, and the compiler is a separate executable producing portable bytecode. The language itself has C-like syntax, bitwise operators, and it's not thread-hostile.
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