pedrodiogo / spooky-vm Goto Github PK

Spooky is a simple programming language with an accompanying compiler and virtual machine.

To run the compiler, you need to have Java 14 installed.

To compile the source source.spooky into the compiled file exec.spook, run

spooky compile source.spooky exec.spook

To execute the program, run

spooky spooky.jar run exec.spook

Spooky is a bare-bones C-like language, supporting only basics such as variables, functions, loops, conditionals and simple expressions. While the VM itself is pretty fixed in structure, contributions to the language itself are very welcome. In particular, features such as

• arrays
• string literals

would be nice.

When executing programs, a set of external functions may optionally be provided. These are declared as extern functions in your source and provided by the execution environment.

extern void printInt(int i)
extern void print(int ch)

bool isPrime(int n) {
    int p = 1;
    for (int i = 2; i * i <= n; i++) {
        if (n % i == 0) {
            return false;
        }
    }
  }
  return true;
}

void main() {
    for (int n = 90; n < 100; n++) {
        printInt(n);
        print(' ');
        printInt(isPrime(n));
        print('\n');
    }
}