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str??????????

master
alexandre.aboulin 2 years ago
parent
commit
c0c6925d62
  1. 29
      expression.py

29
expression.py

@ -3,30 +3,30 @@ import re
class Token: class Token:
OPERAND_ADDITION = "+" OPERAND_ADDITION = "+"
OPERAND_MULTIPLICATION = "*" OPERAND_MULTIPLICATION = "*"
NUMBER = re.compile(r"^\\d+$") #CHANGER NUMBER = re.compile(r'\d+') #CHANGER
class Expression: class Expression:
def __init__(self, val, gauche=None, droite=None): def __init__(self, val, gauche=None, droite=None):
if Token.NUMBER.match(str(val)) and (gauche != None or droite != None): if Token.NUMBER.search(str(val)) is not None and (gauche != None or droite != None):
raise AttributeError("gauche et droite ne peuvent pas exister si val est un nombre") raise AttributeError("gauche et droite ne peuvent pas exister si val est un nombre")
self.val = val self.val = val
self.gauche = gauche self.gauche = gauche
self.droite = droite self.droite = droite
def evalue(self, this): def evalue(self):
#if Token.NUMBER.match(str(this.val)): if self.val == Token.OPERAND_ADDITION:
print(this.val) return self.gauche.evalue() + self.droite.evalue()
# return int(this.val) elif self.val == Token.OPERAND_MULTIPLICATION:
if this.val == Token.OPERAND_ADDITION: return self.gauche.evalue() * self.droite.evalue()
return this.evalue(this.gauche) + this.evalue(this.droite)
elif this.val == Token.OPERAND_MULTIPLICATION:
return this.evalue(this.gauche) * this.evalue(this.droite)
else: else:
return int(this.val) return int(self.val)
def __str__(self):
if Token.NUMBER.match(string=self.val) is not None:
return self.val
return "(" + self.gauche.__str__() + self.val + self.droite.__str__() + ")"
def __str__():
pass
exp = Expression('*', exp = Expression('*',
Expression(6, None, None), Expression(6, None, None),
@ -34,4 +34,5 @@ Expression('+',
Expression(4, None, None), Expression(4, None, None),
Expression(3, None, None) Expression(3, None, None)
)) ))
print(exp.evalue(exp)) print(exp.evalue())
print(str(exp))
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