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import sys, getopt, os, traceback
from enum import Enum
from lexer import *
class Step(Enum):
LEXICO = 0
SINTACTICO = 1
SEMANTICO = 2
class Main:
input_file = None
output_file = None
output_table = False
step = None
def print_help (self, arg0):
print("Uso: % s -i entrada.es -o salida.es [-t]" % arg0)
print(" % s -i entrada.es -o salida.es [-l|-p|-s]" % arg0)
print(" % s -h" % arg0)
def main(self, argv):
try:
opts, args = getopt.getopt(argv[1:], "hi:o:lpst", [
"input=", "output=", "lex", "parse", "semantic", "table"
])
except getopt.GetoptError as err:
print(err)
print_help(argv[0]);
sys.exit(2)
for o, a in opts:
if o == "-h":
self.print_help (argv[0])
elif o in ("-i", "--input"):
self.input_file = a
elif o in ("-o", "--output"):
self.output_file = a
elif o in ("-t", "--table"):
self.output_table = True
elif o in ("-l", "--lex"):
self.step = Step.LEXICO
elif o in ("-p", "--parse"):
self.step = Step.SINTACTICO
elif o in ("-s", "--semantic"):
self.step = Step.SEMANTICO
else:
assert False, "opción desconocida"
if self.input_file and self.output_file:
table_file = self.input_file + '.tab'
delete_tab = not self.step and not self.output_table and not os.path.exists(table_file)
try:
if self.step == Step.LEXICO:
sys.exit(Lexer(self.input_file).inicio())
elif self.step == Step.SINTACTICO:
sys.exit(Parser(self.input_file).inicio())
elif self.step == Step.SEMANTICO:
print("NOT IMPLEMENTED")
sys.exit(1)
else:
if Lexer(self.input_file).inicio() != 0:
raise Exception("Error léxico")
if Parser(self.input_file).inicio() != 0:
raise Exception("Error sintáctico")
except Exception as e:
traceback.print_exception(type(e), e, e.__traceback__)
sys.exit(1)
# Borrar tabla de símbolos
if delete_tab:
os.remove(table_file)
else:
self.print_help(argv[0])
sys.exit(2)
if __name__ == "__main__":
Main().main(sys.argv)
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