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Avoid proliferation of parenthesis

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The str() function of the parse tree now emits expressions
with much less parenthesis.

This should allow optimized queries to be more readable.
This commit is contained in:
Salvo 'LtWorf' Tomaselli 2016-04-09 11:11:25 +02:00
parent e4e3eae8ce
commit 6bc219c635
1 changed files with 2 additions and 5 deletions
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7
relational/parser.py
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@ -277,11 +277,8 @@ class Node (object):
elif (self.kind == UNARY):
return self.name + " " + self.prop + " (" + self.child.__str__() + ")"
elif (self.kind == BINARY):
if self.left.kind == RELATION:
le = self.left.__str__()
else:
le = "(" + self.left.__str__() + ")"
if self.right.kind == RELATION:
le = self.left.__str__()
if self.right.kind != BINARY:
re = self.right.__str__()
else:
re = "(" + self.right.__str__() + ")"