Lox bytecode interpreter implemented in C++

Written for educational purposes and with book Crafting interpreters. I've tried to use safe C++ constructs and data type with OOP. And, of course, without global varaibles. This is not an exact same replica with clox, but it interprets the same language.

The code is messy and I want to make my own language (well, another replica of JS), so wait for Loop!

Features

They are undone, actually.

• Writing and reading chunks. Undone.
• Optimization. Only some kind of constant folding.
• Verifying. When I've added jumps and loops it cracked.
• Tests. When functions appeared, tests become very hard to write.

Differences from Lox and clox

• Natives have arity
• GC allocates only objects. Dynamic arrays are implemented with std::vector. And so on.
• Unimplemented GC when StressGC is off. Because GC can't track how many bytes the program uses, but it can track living objects count.
• There is only Closure object, no Function.
• Upvalue objects holds an std::vector of upvalues.
• GC can be switched on or off. Is it a good feature?
• There are PrintFlags. The only use for them is to print string as it is, or with quotes and escaped symbols.
• The code heavily relies on macros that use macros. (Link)[]

Project structure

This repository contains three projects:

1. Lox VM library LoxLib/. It contains two folders: include for public headers and src for implementation.
2. Lox VM runner LoxInterpreter/ (a bad name perhaps). It is the main file that runs REPL or a file. It contains src directory where it is implemented.
3. Lox tests LoxGoogleTests. It contains folder src, where the tests lie. There is no main file, so they are intended to run with gtest_main.