stop = false
input_file = ""
output_file = ""
ins_table = {}
ins_table["ld"]=1
ins_table["str"]=2
ins_table["add"]=3
ins_table["sub"]=4
ins_table["jmp"]=5
ins_table["jmpz"]=6
ins_table["jmpnz"]=7
ins_table["imm"]=8
label_table = {}
var_table = {}
while not stop
	mem_loc = 0
	print "Input file:"
	input_file = gets.chomp
	if input_file != "exit"
		output_file = input_file.gsub(".asm",".code")
		output_file = File.open(output_file, "w")
		output_file.puts("v2.0 raw")
		input_file = File.open(input_file, "r")
		input_file.each_line do |line|
			pos = line.index(":")
			if pos == nil
			mem_loc +=1
			else
				line = line.split(":")
				line = line[0]
				temp = String(mem_loc)
				while temp.length < 4
					temp = "0" + temp
				end
				label_table[line] = temp
				puts "Label "+line+" assigned "+temp
			end
		end
		input_file.rewind
		input_file.each_line do |line|
			if line.index(":") == nil
				line = line.split(" ")
				print "ins:" + line[0] + " "
				puts "arg:" + line[1]
				ins = ins_table[line[0]]
				puts "ins code:" + String(ins)
				ins = String(ins)
				arg = String(line[1])
				if label_table.has_key?(arg)
					arg = label_table[arg]
				end
				ins = arg.prepend(ins)
				puts "final ins:" + ins
				output_file.puts(ins)
			end
		end
	output_file.close
	input_file.close
	else
		stop = true
	end
end