input_file = open(input_path, "r")
regex = input_file.readline()
input_file.close()
return regex
if __name__ == '__main__':
input_path = sys.argv[1]
output_path_nfa = sys.argv[2]
output_path_dfa = sys.argv[3]
# add concatenation symbol into the regex
regex = precompute_regex(read_input(input_path))
pda = PDA()
nfa = NFA()
# Construieste arborele de parsare
parse_tree = pda.parseExpression(regex)
# Adauga root-ul arboerlui de parsare in NFA
nfa.transitions[0, parse_tree] = 1
# Creeaza NFA
nfa.create_NFA(0)
# Scrie in fisier NFA-ul
nfa.write_output(output_path_nfa)
# Foloseste codul din tema2 pentru a transforma NFA-ul obtinut din regex in DFA
#convert_to_dfa(output_path_nfa, output_path_dfa)
