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37 lines
1.0 KiB
37 lines
1.0 KiB
import re
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class Token:
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OPERAND_ADDITION = "+"
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OPERAND_MULTIPLICATION = "*"
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NUMBER = re.compile(r"^\\d+$") #CHANGER
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class Expression:
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def __init__(self, val, gauche=None, droite=None):
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if Token.NUMBER.match(str(val)) and (gauche != None or droite != None):
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raise AttributeError("gauche et droite ne peuvent pas exister si val est un nombre")
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self.val = val
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self.gauche = gauche
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self.droite = droite
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def evalue(self, this):
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#if Token.NUMBER.match(str(this.val)):
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print(this.val)
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# return int(this.val)
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if this.val == Token.OPERAND_ADDITION:
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return this.evalue(this.gauche) + this.evalue(this.droite)
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elif this.val == Token.OPERAND_MULTIPLICATION:
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return this.evalue(this.gauche) * this.evalue(this.droite)
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else:
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return int(this.val)
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def __str__():
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pass
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exp = Expression('*',
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Expression(6, None, None),
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Expression('+',
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Expression(4, None, None),
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Expression(3, None, None)
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))
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print(exp.evalue(exp))
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