Clear class and static class in order to be used in render
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lafrite
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25dc4e4845
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db50fdb9ec
@ -160,7 +160,7 @@ class Expression(object):
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return self._infix_tokens
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elif self._postfix_tokens:
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self.post2in_fix()
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self._infix_tokens = self.post2in_fix(self._postfix_tokens)
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return self._infix_tokens
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else:
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@ -180,7 +180,7 @@ class Expression(object):
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return self._postfix_tokens
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elif self._infix_tokens:
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self.in2post_fix()
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self._postfix_tokens = self.in2post_fix(self._infix_tokens)
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return self._postfix_tokens
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else:
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@ -193,24 +193,16 @@ class Expression(object):
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# ----------------------
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# "fix" tranformations
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#@classmethod
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def in2post_fix(self, infix_tokens = None):
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""" From the self.infix_tokens list compute the corresponding self.postfix_tokens list
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@classmethod
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def in2post_fix(self, infix_tokens):
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""" From the infix_tokens list compute the corresponding postfix_tokens list
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@param infix_tokens: the infix list of tokens to transform into postfix form. If nothing is set, it takes the value self.infix_tokens
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@return: the corresponding postfix list of tokens if infix_tokens is set. nothing otherwise but stock it in self.postfix_tokens
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@param infix_tokens: the infix list of tokens to transform into postfix form.
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@return: the corresponding postfix list of tokens.
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>>> Expression.in2post_fix(['(', 2, '+', 5, '-', 1, ')', '/', '(', 3, '*', 4, ')'])
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[2, 5, '+', 1, '-', 3, 4, '*', '/']
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"""
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arg = 1
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if infix_tokens == None:
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arg = 0
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infix_tokens = self._infix_tokens
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# TODO: Trouver une autre méthode pour ne pas à avoir à utiliser cet attribu privé |dim. nov. 3 07:24:31 CET 2013
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opStack = Stack()
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postfixList = []
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@ -233,26 +225,18 @@ class Expression(object):
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while not opStack.isEmpty():
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postfixList.append(opStack.pop())
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if not arg:
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self.postfix_tokens = postfixList
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else:
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return postfixList
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#@classmethod
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def post2in_fix(self, postfix_tokens = None):
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""" From the self.postfix_tokens list compute the corresponding self.infix_tokens list
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@classmethod
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def post2in_fix(self, postfix_tokens):
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""" From the postfix_tokens list compute the corresponding infix_tokens list
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@param postfix_tokens: the postfix list of tokens to transform into infix form. If nothing is set, it takes the value self.postfix_tokens
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@return: the corresponding infix list of tokens if postfix_tokens is set. nothing otherwise but stock it in self.infix_tokens
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@param postfix_tokens: the postfix list of tokens to transform into infix form.
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@return: the corresponding infix list of tokens if postfix_tokens.
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>>> Expression.post2in_fix([2, 5, '+', 1, '-', 3, 4, '*', '/'])
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['( ', 2, '+', 5, '-', 1, ' )', '/', '( ', 3, '*', 4, ' )']
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"""
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arg = 1
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if postfix_tokens == None:
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arg = 0
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postfix_tokens = self._postfix_tokens
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operandeStack = Stack()
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for token in postfix_tokens:
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@ -272,9 +256,6 @@ class Expression(object):
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infix_tokens = flatten_list(operandeStack.pop())
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if not arg:
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self.infix_tokens = infix_tokens
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else:
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return infix_tokens
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# ---------------------
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@ -333,8 +314,8 @@ class Expression(object):
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## ---------------------
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## Computing the expression
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@classmethod
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def doMath(self, op, op1, op2):
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@staticmethod
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def doMath(op, op1, op2):
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"""Compute "op1 op op2" or create a fraction
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:param op: operator
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@ -354,8 +335,8 @@ class Expression(object):
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## ---------------------
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## Recognize numbers and operators
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@classmethod
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def isNumber(self, exp):
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@staticmethod
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def isNumber(exp):
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"""Check if the expression can be a number
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:param exp: an expression
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@ -364,8 +345,8 @@ class Expression(object):
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"""
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return type(exp) == int or type(exp) == Fraction
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@classmethod
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def isOperator(self, exp):
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@staticmethod
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def isOperator(exp):
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"""Check if the expression is an opération in "+-*/"
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:param exp: an expression
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@ -413,23 +394,26 @@ if __name__ == '__main__':
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#exp = "2 + 5 * ( 3 - 4 )"
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#test(exp)
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exp = "( 2 + 5 ) * ( 3 - 4 )"
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test(exp)
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#exp = "( 2 + 5 ) * ( 3 - 4 )"
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#test(exp)
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exp = "( 2 + 5 ) * ( 3 * 4 )"
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test(exp)
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#exp = "( 2 + 5 ) * ( 3 * 4 )"
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#test(exp)
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exp = "( 2 + 5 - 1 ) / ( 3 * 4 )"
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test(exp)
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#exp = "( 2 + 5 - 1 ) / ( 3 * 4 )"
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#test(exp)
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exp = "( 2 + 5 ) / ( 3 * 4 ) + 1 / 12"
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test(exp)
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#exp = "( 2 + 5 ) / ( 3 * 4 ) + 1 / 12"
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#test(exp)
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exp = "( 2 + 5 ) / ( 3 * 4 ) + 1 / 2"
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test(exp)
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#exp = "( 2 + 5 ) / ( 3 * 4 ) + 1 / 2"
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#test(exp)
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exp = "( 2 + 5 ) / ( 3 * 4 ) + 1 / 12 + 5 * 5"
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test(exp)
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#exp = "( 2 + 5 ) / ( 3 * 4 ) + 1 / 12 + 5 * 5"
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#test(exp)
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import doctest
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doctest.testmod()
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# -----------------------------
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# Reglages pour 'vim'
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