def main():
exit = False
exit2 = False
while not exit:
file_name = raw_input("\n>Where is the Grammar =) ?: ")
print "\nGrammar:"
grammar = Grammar()
grammar.init_grammar(file_name)
print "\nNon Terminals: " + grammar.non_terminals.__str__()
print "\nTerminals:" + grammar.terminals.__str__()
grammar.define_first_sets()
grammar.define_follow_sets()
print "\nFirst and Follow Set of Productions:\n"
print_table_first_follow_set(grammar)
print "\nParse Table of the Grammar: \n"
parse_table = build_parse_table(grammar)
parse_table_with_sync_set(parse_table,grammar)
is_ambiguous = print_parse_table(parse_table, grammar)
if is_ambiguous:
print "The Grammar is Ambiguous"
else:
print "The Grammar is not Ambiguous"
while not exit2:
input_string = raw_input("\nString to Analyze: ")
if '$' in input_string:
ll_parsing(parse_table, grammar, input_string)
else:
print "\nYou must enter the end of string character ($)"
exit2 = raw_input("\nEnter another String to Analyze? ") != 'yes'
exit = raw_input("\nEnter another Grammar? ") != 'yes'
print "*"*100
