#pragma once
#include <iostream>
#include <optional>
#include <string>
#include <vector>

#define PL(msg) std::cout << msg << '\n' // print line

enum Op
{	// https://en.cppreference.com/w/cpp/language/operator_precedence
	BRL,
	BRR,
	LOR,
	LAND,
	BOR,
	BXOR,
	BAND,
	EQ,
	UEQ,
	LT,
	LTE,
	BT,
	BTE,
	PLS,
	MIN,
	MUL,
	DIV,
	MOD,
};

__forceinline int op_prec(Op op)
{
	switch (op)
	{
	case BRL:
		return -9000;
	case LOR:
		return -15;
	case LAND:
		return -14;
	case BOR:
		return -13;
	case BXOR:
		return -12;
	case BAND:
		return -11;
	case EQ:
	case UEQ:
		return -10;
	case LT:
	case LTE:
	case BT:
	case BTE:
		return -9;
	case PLS:
	case MIN:
		return -6;
	case MUL:
	case DIV:
	case MOD:
		return -5;
	}
	return -1; // unsupporeted op
}

std::optional<int> prsi(std::string str);
std::vector<char>* lf(std::string& path);
std::vector<char>* lf(const char* path);
bool lnew(std::string& ln, const char* ew);
bool lnsw(std::string& ln, int idx, const char* sw);
void ssie(std::string& str, std::string repl);