Grok

Fun with compilers, interpereters, and such.

Language

Grok is a few things:

1. A simple language. Integer, plus or minus, then integer.
2. An interpreter/emulator. Kinda looks like a made-up CPU.
3. The assembly/bytecode for that CPU.

Commands

• rungrok: take a grok program and run it
• grokc: take a grok program and spit out assembly/bytecode
• grok: take assembly/bytecode and execute it
• grokdb: take assembly/bytecode and step through like a debugger

Instructions

grok is a machine with three registers, a, b, and c. There’s also a program counter, pc, that you can just observe, not do anything with. Yet.

Instructions:

• set reg val: set the register reg to the value val
• set reg1 reg2: set the register reg1 to the value of reg2
• increment reg: increment the register reg
• decrement reg: decrement the register reg

That’s it, for now.