Stupid logger thingamabob

main.cpp

#include "logger.hpp"

int bye() {
	logger log("bye");
	log << "byeee";
	return 345;
}

int hihi() {
	logger log("hi");
	log << "hi";
	auto b = bye() + 12;
	log << "hi2";
	return b;
}

int main() {
	logger log("main");
	log << "am main";
	int x = hihi();
	log << "back at main";
    return 0;
}

result.txt

[main] am main
[main->hi] hi
[main->hi->bye] byeee
[main->hi] hi2
[main] back at main

stupid_logger.hpp

#pragma once

#include <string>
#include <deque>
#include <iostream>


class logger {
	inline static std::deque<std::string> prefix_stack;

public:
	logger(std::string&& prefix) {
		logger::prefix_stack.push_back(prefix);
	}

	~logger() {
		logger::prefix_stack.pop_back();
	}

	void print(std::string&& stuff) const {
		std::cout << logger::get_stack_repr() << " " << stuff << std::endl;
	}

	void operator<<(std::string&& stuff) const {
		this->print(std::move(stuff));
	}

	static const std::string get_stack_repr() {
		std::string tmp;
		const auto stack_size = logger::prefix_stack.size();

		tmp.append("[");
		for (size_t i = 0; i < stack_size; i++) {
			tmp.append(logger::prefix_stack[i]);
			if (i != stack_size - 1) {
				tmp.append("->");
			}
		}
		tmp.append("]");

		return tmp;
	}
};