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Expression can create fake in with simplify and simplified methods

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Lafrite 2014-12-22 09:38:51 +01:00
parent 981c8db0e5
commit f6739f8c7c
1 changed files with 15 additions and 1 deletions
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16
pymath/expression.py
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@ -57,7 +57,21 @@ class Expression(object):
raise ValueError("Can't build Expression with {} object".format(type(exp)))
if len(expression.postfix_tokens) == 1:
return expression.postfix_tokens[0]
token = expression.postfix_tokens[0]
if hasattr(token, 'simplify'):
return expression.postfix_tokens[0]
elif type(token) == int:
# On crée un faux int en ajoutant la méthode simplify et simplified et la caractérisique isNumber
simplify = lambda x:[x]
simplified = lambda x:x
is_number = True
methods_attr = {'simplify':simplify, 'simplified':simplified, 'isNumber': is_number}
fake_token = type('fake_obj', (int,), methods_attr)(token)
return fake_token
else:
raise ValueError("Unknow type in Expression: {}".format(type(token)))
else:
expression._isExpression = 1