Interpreter for Brain Death (GC15X1H)

braindeath.py

#!/usr/bin/env python3
#
# WARNING: This program serves as a reference! Please write your own interpreter to justify your find!
# WARNUNG: Dieses Programm soll als Referenzimplementierung gelten! Bitte schreibe deine eigene Lösung um dir den Find zu verdienen!
#
# (c) Sebb767, 2016
#

import sys


if(len(sys.argv) < 2):
	print("Usage: %s file" % sys.argv[0])
	exit(1)

mem = [ 0, 0, 0, 0, 0, 0, 0 ] # 7 register
ptr = 0 # reg pointer
ctr = 0 # command counter

loop = [] # loop index
commands = [ '+', '-', 'i', 'd', '=', '(', ')' ]

code = "" # code
result = ""

# read whole file and extract commands
with open(sys.argv[1]) as f:
	content = f.readlines()

	for line in content: 
		for c in line:
			if c in commands:
				code += c

while (ctr < len(code)):
	cmd = code[ctr]
	
	# incr/decr
	if (cmd == 'i'):
		mem[ptr] += 1
	if (cmd == 'd'):
		mem[ptr] -= 1

	# reg
	if (cmd == '+'):
		ptr += 1
	if (cmd == '-'):
		ptr -= 1

	#loop
	if (cmd == '('): 
		loop.append(ctr)
	if (cmd == ')'): 
		if(mem[ptr]!=0):
			ctr = loop[-1]
		else:
			loop.pop()

	#print
	if (cmd == '='):
		print("%s %s" % (hex(mem[ptr]), chr(mem[ptr])))
		result += chr(mem[ptr])

	ctr += 1


print("\nExited, result: %s" % result)