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class automata_ope:
stateN = 0
def isAccepted(self, _str):
i = len(_str)
_len = len(_str)
for i in range(len):
if self.stateN == 0:
self.start(_str[i])
if self.stateN == 1:
self.state1(_str[i])
if self.stateN == 2:
self.state2(_str[i])
if self.stateN == 3:
self.state3(_str[i])
if self.stateN == 4:
self.start4(_str[i])
if self.stateN == 5:
self.state5(_str[i])
if self.stateN == 6:
self.state6(_str[i])
if self.stateN == 7:
self.state7(_str[i])
if self.stateN == 8:
self.state8(_str[i])
else:
return 0
if (self.stateN == 1 or self.stateN == 7 or self.stateN == 8 or self.stateN == 2 or self.stateN == 3 or self.stateN == 6):
return 1
else:
return 0
def start(self,c):
if(c == '=' or c == '>' or c == '<' or c == '/' or c == '*' or c == '%' or c == '!'):
self.stateN = 1
else if(c == '&'):
self.stateN = 4
else if(c == '|'):
self.stateN = 5
else if(c == '-'):
selfstateN = 6
else if(c == '+'):
selfstateN = 3
else:
self.stateN = -1
def state1(self,c):
if(c == '='):
self.stateN = 2
else:
self.stateN = -1
def state2(self,c):
self.stateN = -1
def state3(self,c):
if(c == '+'):
self.stateN = 7
else if(c == '='):
self.stateN = 2
else:
self.stateN = -1
def state4(self,c):
if(c == '&'):
self.stateN = 2
else:
self.stateN = -1
def state5(self,c):
if(c == '|'):
self.stateN = 2
else:
self.stateN = -1
def state6(self,c):
if(c == '-'):
self.stateN = 8
else if(c == '='):
self.stateN = 2
else:
self.stateN = -1
def state7(self,c):
self.stateN = -1
def state8(self,c):
self.stateN = -1
def verified(self,token):
if isAccepted(token):
return true
else:
return false
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