;; really simple calculator (add/subtract)
;; 

loop while run = true:
	src_in == get cli_opt(a);
		if cli_opt = '0' then FAIL
		else
			continue
	open_file(src_in) as #1
	open_file(asm_out) as #2
	read (#1):
		case of #1,1 :
			if ';;' then continue
			if "a" then var1 = decmial("a")
		case of #1,2 :
			if ';;' then continue
			if "+" then x = '+'
			if "-" then x = '-'
		case of #1,3 :
			if ';;' then continue
			if "b" then var2 == decimal("b")
	
	case of x:
		if x = '+' then  z = add
		if x = '-' then  z = sub
		else
			FAIL
	
	;; put out asm 
	
	let varA = ""push", var1 "r1""
	let varB = ""push", var2 "r2""
	let oper = "z, "r1 r2 > r3"
	let varC = "mov r3 > s1"
	
	write #2(varA, varB, oper, varC)	
	run = false