#pragma once

#include <cstdint>

using u8 = std::uint8_t;
using i8 = std::int8_t;
using u16 = std::uint16_t;
using i16 = std::int16_t;
using u32 = std::uint32_t;
using i32 = std::int32_t;
using u64 = std::uint64_t;
using i64 = std::int64_t;
using usize = std::uintptr_t;
using isize = std::intptr_t;

[[maybe_unused]] static inline auto rune_to_string(uint32_t cp) -> char const *
{
	static char utf8[5] = { 0 };
	for (auto &c : utf8)
		c = 0;

	if (cp < 0x80) {
		utf8[0] = cp;
	} else if (cp < 0x800) {
		utf8[0] = 0xC0 | (cp >> 6);
		utf8[1] = 0x80 | (cp & 0x3F);
	} else if (cp < 0x10000) {
		utf8[0] = 0xE0 | (cp >> 12);
		utf8[1] = 0x80 | ((cp >> 6) & 0x3F);
		utf8[2] = 0x80 | (cp & 0x3F);
	} else {
		utf8[0] = 0xF0 | (cp >> 18);
		utf8[1] = 0x80 | ((cp >> 12) & 0x3F);
		utf8[2] = 0x80 | ((cp >> 6) & 0x3F);
		utf8[3] = 0x80 | (cp & 0x3F);
	}

	return utf8;
}