def createDFA(Autom):
#Inicializando variables
count_states = 0
new_states = []
# Primer e-closure
inicial = e_closure(Autom, Autom.initial_state)
new_states.append(inicial)
Aut = Automata()
Aut.set_inicial([0])
Symbols = Autom.symbols
if ("3" in Symbols):
Symbols.remove("3")
Symbols.sort()
Aut.set_symbols(Symbols)
while count_states < len(new_states):
for sim in Symbols:
#print("simbolo: ", sim)
temp = e_closure(Autom, move(Autom, new_states[count_states], sim))
if (temp != []):
if (temp in new_states):
#print("igual", temp, new_states)
pos = new_states.index(temp)
#print(pos)
Aut.add_transitions([count_states, pos, sim])
else:
#print("diferente", temp, new_states)
new_states.append(temp)
#print(count_states, len(new_states)-1)
Aut.add_transitions(
[count_states, len(new_states) - 1, sim])
count_states += 1
for st in new_states:
if Autom.final_states[0] in st:
pos = new_states.index(st)
Aut.add_finalState(pos)
states = list(range(0, count_states))
Aut.set_states(states)
return Aut
def D_DFA(arbol):
complete_tree = copy.copy(arbol)
# Tabla base con fistpos y lastpos de cada nodo importante y 3
pos_nodes = 0
pos = 0
for node in complete_tree:
if (node != "*" and node != "|" and node != "."):
if (node == "3"):
complete_tree[pos] = [pos, node, [], []]
else:
complete_tree[pos] = [
pos, node, pos_nodes, [pos_nodes], [pos_nodes]
]
pos_nodes += 1
else:
complete_tree[pos] = [pos, node]
pos += 1
# Firstpos y lastpos de cada nodo
pos = 0
for node in complete_tree:
if (node[1] == "*" or node[1] == "." or node[1] == "|"):
complete_tree[pos] = [
pos, complete_tree[pos][1],
firstpos(complete_tree, pos),
lastpos(complete_tree, pos)
]
pos += 1
# Followpos
for node in complete_tree:
followpos(complete_tree, node[0])
print("******** Table ALL************")
print("id\tSymbol\tPos n\tfirstpos\tlastpos\tfollowpos")
for a in complete_tree:
if (len(a) == 6):
print(a[0], "\t", a[1], "\t", a[2], "\t\t", a[3], "\t", a[4], "\t",
a[5])
elif (len(a) == 5):
print(a[0], "\t", a[1], "\t", a[2], "\t\t", a[3], "\t", a[4], "\t",
" --")
elif (len(a) == 4):
print(a[0], "\t", a[1], "\t", a[2], "\t\t", a[3], "\t", "--", "\t",
" --")
else:
print(a[0], "\t", a[1], "\t", a[2], "\t\t", "--", "\t", "--", "\t",
" --")
print("******** Table DFA************")
print("Symbol\tPos n\tfirstpos\tlastpos\tfollowpos\t")
table = []
symbols = []
for a in complete_tree:
if (isinstance(a[2], int)):
if (a[1] != "#"):
if a[1] not in symbols:
symbols.append(a[1])
table.append(a)
for a in table:
if (len(a) == 6):
print(a[1], "\t", a[2], "\t", a[3], "\t", a[4], "\t", a[5], "\t")
else:
print(a[1], "\t", a[2], "\t", a[3], "\t", a[4], "\t", " --")
# Creando el nuevo automata
Aut = Automata()
states = []
if (len(complete_tree[len(complete_tree) - 1]) == 4):
initial = complete_tree[len(complete_tree) - 1][2]
else:
initial = complete_tree[len(complete_tree) - 1][4]
states.append(initial)
Aut.set_inicial(initial)
Aut.set_symbols(symbols)
print("Inicial", initial)
count_states = 0
while count_states < len(states):
for sim in symbols:
temp_state = []
for pos in states[count_states]:
for a in table:
if (a[2] == pos):
if (sim == a[1]):
temp_state = joinList(temp_state, a[5])
if (temp_state not in states):
states.append(temp_state)
Aut.add_transitions([count_states, len(states) - 1, sim])
else:
pos = states.index(temp_state)
Aut.add_transitions([count_states, pos, sim])
count_states += 1
for st in states:
for a in table:
if (a[1] == "#"):
if a[2] in st:
pos = states.index(st)
Aut.add_finalState(pos)
all_states = list(range(0, count_states))
Aut.set_states(all_states)
return Aut
def Thompson(tokens, countStates):
for token in tokens:
if (token == "*"):
countStates += 1
A1 = tokens[tokens.index(token) - 1]
A1.set_final([countStates])
A1.add_state(countStates - 1)
A1.add_state(countStates)
A1.set_symbols(joinList(A1.symbols, ["3"]))
A1.sub_trans_states(1)
A1.add_transitions(
[A1.initial_state[0], A1.initial_state[0] + 1, "3"])
A1.add_transitions(
[A1.final_states[0] - 1, A1.final_states[0], "3"])
A1.add_transitions([A1.initial_state[0], A1.final_states[0], "3"])
A1.add_transitions(
[A1.final_states[0] - 1, A1.initial_state[0] + 1, "3"])
tokens.pop(tokens.index(token) - 1)
tokens[tokens.index(token)] = A1
countStates += 1
#print(A1.initial_state, A1.final_states, A1.states, A1.symbols, A1.transitions)
return tokens, countStates
elif (token == "."):
A1 = tokens[tokens.index(token) - 2]
A2 = tokens[tokens.index(token) - 1]
# Cambios en los estados del segundo autómata
if (A1.final_states != A2.initial_state):
A2.set_inicial(A1.final_states)
A2.sub_finaState(-1)
A2.sub_states(-1)
A2.sub_trans_states(-1)
countStates -= 1
#print(A1.initial_state, A1.final_states, A1.states, A1.symbols, A1.transitions)
#print(A2.initial_state, A2.final_states, A2.states, A2.symbols, A2.transitions)
#Creación del nuevo autómata
Aut = Automata()
Aut.set_inicial(A1.initial_state)
Aut.set_final(A2.final_states)
Aut.set_states(joinList(A1.states, A2.states))
Aut.set_symbols(joinList(A1.symbols, A2.symbols))
Aut.set_transitions(joinList(A1.transitions, A2.transitions))
#print(Aut.initial_state, Aut.final_states, Aut.states, Aut.symbols, Aut.transitions)
tokens.pop(tokens.index(token) - 1)
tokens.pop(tokens.index(token) - 1)
tokens[tokens.index(token)] = Aut
return tokens, countStates
elif (token == "|"):
countStates += 1
A1 = tokens[tokens.index(token) - 2]
A2 = tokens[tokens.index(token) - 1]
Aut = Automata()
Aut.set_inicial(A1.initial_state)
Aut.set_final([countStates])
Aut.set_states(joinList(A1.states, A2.states))
Aut.add_state(countStates - 1)
Aut.add_state(countStates)
Aut.set_symbols(joinList(A1.symbols, A2.symbols))
Aut.set_symbols(joinList(Aut.symbols, ["3"]))
A1.sub_trans_states(1)
A2.sub_trans_states(1)
Aut.set_transitions(joinList(A1.transitions, A2.transitions))
Aut.add_transitions(
[Aut.initial_state[0], A1.initial_state[0] + 1, "3"])
Aut.add_transitions(
[Aut.initial_state[0], A2.initial_state[0] + 1, "3"])
Aut.add_transitions(
[A1.final_states[0] + 1, Aut.final_states[0], "3"])
Aut.add_transitions(
[A2.final_states[0] + 1, Aut.final_states[0], "3"])
#Actualizar array
tokens.pop(tokens.index(token) - 1)
tokens.pop(tokens.index(token) - 1)
tokens[tokens.index(token)] = Aut
countStates += 1
#print("Creacion", Aut.initial_state, Aut.final_states, Aut.states, Aut.symbols, Aut.transitions)
return tokens, countStates
elif (isinstance(token, str)):
Aut = Automata()
Aut.add_symbol(token)
Aut.set_inicial([countStates])
countStates += 1
Aut.set_final([countStates])
countStates += 1
Aut.set_states([Aut.initial_state[0], Aut.final_states[0]])
Aut.add_transitions(
[Aut.initial_state[0], Aut.final_states[0], token])
tokens[tokens.index(token)] = Aut
#print("Creacion", Aut.initial_state, Aut.final_states, Aut.states, Aut.symbols, Aut.transitions)
return tokens, countStates