package asm

import (
	"fmt"
	"math"
	"strconv"
	"strings"

	"git.urbach.dev/cli/q/src/cpu"
)

type Memory struct {
	Base           cpu.Register
	Offset         int8
	OffsetRegister cpu.Register
	Length         byte
}

// Format returns a human readable version.
func (mem *Memory) Format(custom string) string {
	tmp := strings.Builder{}
	tmp.WriteString("[")
	tmp.WriteString(fmt.Sprint(mem.Base))

	if mem.OffsetRegister != math.MaxUint8 {
		tmp.WriteString("+")
		tmp.WriteString(fmt.Sprint(mem.OffsetRegister))
	}

	if mem.Offset != 0 {
		if mem.Offset > 0 {
			tmp.WriteString("+")
		}

		tmp.WriteString(strconv.Itoa(int(mem.Offset)))
	}

	tmp.WriteString("], ")
	tmp.WriteString(custom)
	tmp.WriteString(", ")
	tmp.WriteString(strconv.Itoa(int(mem.Length)))
	return tmp.String()
}