def obtch():
from auxiliares import error
global fin_archivo
global offset
global ll
global linea
global MAXLINEA
global contadorLineas
if (fin_archivo == 1):
error(32)
#Le pongo el or pues si es una linea de comentario deberia de saltarse esa linea y leer otra
if (offset == ll - 1 or Lexico.token == Lexico.simbolo.linecomment):
if (Lexico.token == Lexico.simbolo.linecomment):
contadorLineas += 1
ll = getline(MAXLINEA)
offset = -1
if (ll == 0):
fin_archivo = 1
#consolef.write(linea)
#print(linea)
offset -= 1
offset += 1
#
if (offset == -1):
return ' '
actual = linea[contadorLineas][offset]
if ((fin_archivo == 1)):
return ' '
elif (actual == '\n'):
contadorLineas += 1
return ' '
else:
return (linea[contadorLineas][offset])
def main(argv):
global fp
if argv == None:
print(
"\nNo se ha proporcionado el nombre del programa fuente (uso: parser1 progfuente)"
)
else:
fp = open(argv, "r")
if fp == None:
print("\nNo se encontro el programa fuente indicado")
else:
timer = datetime.datetime.today()
#print("\n\nCompilador de cpiton version 69.0/parser1 --- Octubre de 2019 --- \n")
#print(timer)
#print("\nLexema Token\n")
from auxiliares import inicializar_espec
#print(auxiliares.hola)
inicializar_espec()
scanner.consolef.write(
"\n\nCompilador de cpiton version 69.0/parser1 --- Octubre de 2019 --- \n"
)
scanner.consolef.write(timer.strftime('%d/%m/%Y'))
scanner.consolef.write("\nLexema Token\n")
scanner.ch = ' '
scanner.fin_de_archivo = 0
scanner.offset = -1
scanner.ll = 0
No_de_errores = 0
#inicializacion de conjuntos de estabilizacion (en conjuntos.py)
inicializar_conjuntos()
scanner.obtoken()
tds.it = 0
#global token
#token = scanner.obtoken()
#while(token != lexico.simbolo.mdputok):
# token = scanner.obtoken()
#
parseador.inicio()
from auxiliares import error
if lexico.token != lexico.simbolo.mdputok:
error(32)
from auxiliares import estadisticas
estadisticas()
scanner.consolef.close()
fp.close()
return 0
def poner(k):
from auxiliares import error
global it
it += 1
if (it > MAXIT):
error(31)
else:
nuevo = registro(Scanner.lex, k)
tabla.insert(it, nuevo)
mergeSort(tabla)
def leerints(lexid, i, j, MAX, checkDecimal):
global ch
while (1):
try:
prueba = int(ch)
if (i < MAX):
i += 1
lexid += ch
j += 1
ch = obtch()
except ValueError:
if (checkDecimal):
if (j == 1 and ch == ';'):
error(
1
) #si en la primera iteracion no viene un numero es como que pongan 2. y nada mas
break
if (j > MAX):
error(33)
return lexid
def obtoken():
global lextoken
global caracteres
#from auxiliares import error
lexid = None
global lex
ok = 0
global ch
while (ch == ' ' or ch == '\n' or ch == '\t'):
ch = obtch()
if (ch.isalpha()):
lexid = ch
i = 1
ch = obtch()
while (ch.isalnum() or ord(ch) == '95'):
if (i < MAXID):
i += 1
lexid += ch
ch = obtch()
for j in range(0, MAXPAL):
if (lexid == Lexico.lexpal[j]):
ok = 1
break
if (ok == 1):
Lexico.token = Lexico.tokpal[j]
else:
Lexico.token = Lexico.simbolo.ident
lex = lexid[:]
else:
try:
prueba = int(ch)
lexid = ch
i = j = 1
ch = obtch()
isDouble = False
lexid = leerints(lexid, i, j, MAXDIGIT, False)
#VERIFICANDO SI ES DECIMAL
if (ch == '.'):
isDouble = True
lexid += ch
ch = obtch()
i = j = 1
lexid = leerints(lexid, i, j, MAXDECIMAL, True)
if (isDouble):
Lexico.token = Lexico.simbolo.decimal
valor = float(lexid)
else:
Lexico.token = Lexico.simbolo.numero
valor = int(lexid)
except ValueError:
if (ch == ':'):
caracteres = ch
ch = obtch()
if (ch == 'v'):
caracteres += ch
Lexico.token = Lexico.simbolo.dputok
ch = obtch()
else:
error(28)
elif (ch == '<'):
caracteres = ch
ch = obtch()
if (ch == '='):
caracteres += ch
Lexico.token = Lexico.simbolo.mei
ch = obtch()
else:
Lexico.token = Lexico.simbolo.mnr
elif (ch == '>'):
caracteres = ch
ch = obtch()
if (ch == '='):
caracteres += ch
Lexico.token = Lexico.simbolo.mai
ch = obtch()
elif (ch == ':'):
caracteres += ch
ch = obtch()
if (ch == 'v'):
caracteres += ch
Lexico.token = Lexico.simbolo.mdputok
ch = obtch()
else:
Lexico.token = Lexico.simbolo.nulo
ch = obtch()
error(28)
else:
Lexico.token = Lexico.simbolo.myr
elif (ch == '='):
caracteres = ch
ch = obtch()
if (ch == '='):
caracteres += ch
Lexico.token = Lexico.simbolo.igl
ch = obtch()
else:
Lexico.token = Lexico.simbolo.asignacion
elif (ch == '!'):
caracteres = ch
ch = obtch()
if (ch == '='):
caracteres += ch
Lexico.token = Lexico.simbolo.nig
ch = obtch()
else:
error(15)
elif (ch == '/'):
caracteres = ch
ch = obtch()
if (ch == '/'):
caracteres += ch
Lexico.token = Lexico.simbolo.linecomment
ch = obtch()
elif (ch == '*'):
caracteres += ch
Lexico.token = Lexico.simbolo.startcomment
lextoken = caracteres + " " + str(
Lexico.token) + "\n"
consolef.write(lextoken)
while (1):
ch = obtch()
if (ch == '*'):
caracteres = ch
ch = obtch()
if (ch == '/'):
caracteres += ch
Lexico.token = Lexico.simbolo.endcomment
ch = obtch()
break
if (ch == ''):
error(46)
break
else:
error(15)
#elif(ch == '*'):
# caracteres = ch
# ch = obtch()
# if(ch == '/'):
# caracteres += ch
# Lexico.token = Lexico.simbolo.endcomment
# ch = obtch()
# else:
# Lexico.token = Lexico.simbolo.por
elif (ord(ch) == 34):
lexid = ch
ch = obtch()
while (ord(ch) != 34):
lexid += ch
ch = obtch()
if (ch == ''):
error(30)
lexid += ch
Lexico.token = Lexico.simbolo.texto
ch = obtch()
elif (ord(ch) == 39):
lexid = ch
ch = obtch()
lexid += ch
ch = obtch()
if (ord(ch) != 39):
error(31)
else:
lexid += ch
Lexico.token = Lexico.simbolo.caracter
ch = obtch()
else:
caracteres = ch
Lexico.token = Lexico.espec[ord(ch)]
ch = obtch()
if (lexid is None):
lexid = caracteres
lextoken = lexid + " " + str(Lexico.token) + "\n"
consolef.write(lextoken)
if (Lexico.token == Lexico.simbolo.linecomment):
#para que no vuelva a entrar al if de la funcion obtch()
Lexico.token = Lexico.simbolo.nulo
obtoken()
if (Lexico.token == Lexico.simbolo.endcomment):
Lexico.token = Lexico.simbolo.nulo
obtoken()