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solve render bug with (..) - (..) to .. - (..)

This commit is contained in:
Lafrite 2015-03-07 19:35:34 +01:00
parent c00c0a86cc
commit cdfd70d3f3
1 changed files with 15 additions and 5 deletions
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20
pymath/operator.py
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@ -54,8 +54,8 @@ class Operator(str):
ans = link.format(op1 = op1)
elif self.arity == 2:
op1 = self.r_parenthesis(args[0], True)
op2 = self.l_parenthesis(args[1], True)
op1 = self.l_parenthesis(args[0], True)
op2 = self.r_parenthesis(args[1], True)
ans = link.format(op1 = op1, op2 = op2)
ans = save_mainOp(ans, self)
@ -144,8 +144,8 @@ class Operator(str):
ans = save_mainOp(ans, self)
return ans
def l_parenthesis(self, op, str_join=False):
""" Add parenthesis for left operand if necessary """
def all_parenthesis(self, op, str_join=False):
""" Add parenthesis if necessary (left and rigth)"""
try:
if op.mainOp.priority < self.priority:
op = flatten_list(["(", op, ")"])
@ -161,9 +161,13 @@ class Operator(str):
ans = ' '.join([str(i) for i in ans])
return ans
def l_parenthesis(self, op, str_join=False):
""" Add parenthesis for left operand if necessary """
return self.all_parenthesis(op, str_join)
def r_parenthesis(self, op, str_join=False):
""" Add parenthesis for left operand if necessary """
return self.l_parenthesis(op, str_join)
return self.all_parenthesis(op, str_join)
def save_mainOp(obj, mainOp):
"""Create a temporary class build over built-in type to stock the main operation of a calculus
@ -196,6 +200,7 @@ def operatorize(fun):
* "_render": action use in __txt__ and __tex__
* "__txt__": txt rendering
* "__tex__": tex rendering
* "all_parenthesis": mechanism to add parenthesis for left or rigth operande
* "l_parenthesis": mechanism to add parenthesis for left operande
* "r_parenthesis": mechanism to add parenthesis for rigth operande
"""
@ -303,7 +308,11 @@ class op(object):
'1 - 2'
>>> sub.__tex__('1','-2')
'1 - (-2)'
>>> sub.__tex__('-1','2')
'i-1 - 2'
"""
def l_parenthesis(self, op, str_join=False):
return op
caract = {
"operator" : "-", \
"name" : "sub",\
@ -312,6 +321,7 @@ class op(object):
"actions" : ("__sub__","__rsub__"), \
"txt" : "{op1} - {op2}",\
"tex" : "{op1} - {op2}",\
"l_parenthesis": l_parenthesis,\
}
return caract