ConstStackVM

A simple, error-free stack machine that runs in C++ compile time.

Have fun changing Insts in main.cpp and run.

clang++ main.cpp -o main -std=c++11 -O3

Result of VM instructions is just constexpr int result;. You can find the result in asm code:

clang++ main.cpp -S -std=c++11 -O3

features

error free

everything is evaluated in C++ compile time, so that C++ type system comes to help. It assures that your VM instructions are correct or refuse to compile.

example #1

the following code would not compile:

PUSH 1
JMP 10

since 10 is out of bounds.

example #2

PUSH 1
JMP 0

an infinite loop! this would not gonna happen.

fast

Running a piece of VM code costs zero time! the only bottleneck is your C++ compiler.

seamless integration with C++

well, you can just use result in any part of your C++ code.

Turing Complete

So it is a real VM, not a toddler's toy. (Although pretty much an undergrduate's toy.)