fja_checker fix (task type recognition)

from reg_automata import DFA

from antlr4 import RecognitionException # type: ignore

import sys

import signal

def transformation(solution: str, solution_type: str) -> DFA:

    if solution_type == "DFA":

    if solution_type in {"DFA", "TOT"}:

        parser = Parser()

        return parser.str_to_dfa(solution)

    elif solution_type == "NFA":

        parser = Parser()

        nfa = parser.str_to_nfa(solution)

        return nfa.determinize()

    #elif solution_type == "EFA":

    #    parser = Parser()

    #    efa = parser.str_to_efa(solution)

    #    return efa.eliminate_epsilon.determinize()

    else:

        print(solution_type, "type of formalism is not recognized by fja_checker")

def main():

    signal.alarm(60)

    with open(sys.argv[1]) as student_file:

        student_solution = student_file.read()

    try:

        parser = Parser()

        result = student_dfa.is_equivalent(teacher_dfa)

        print(parser.dfa_to_str(teacher_dfa))

        if result:

            exit(0)

        else:

        else:

            return init + " " + transition + " " + final

    def str_to_dfa(self, string: str) -> DFA:

        chars = antlr4.InputStream(string)

        lexer = DFA_grammarLexer(chars)