def div(left, right):
# TODO: division by zero to be tested
try:
result = left / right
return result
except ZeroDivisionError:
DocumentDictionary.setProcessError(False)
return None
def process(tree, nodeIndex):
# security layer and domain out of bound handling
try:
if tree[Tree.leftChildIndex(nodeIndex)] != None:
left = float(tree[Tree.leftChildIndex(nodeIndex)])
else:
left = None
if tree[Tree.rightChildIndex(nodeIndex)] != None:
right = float(tree[Tree.rightChildIndex(nodeIndex)])
else:
right = None
parent = tree[nodeIndex]
result = calculate(parent, left, right)
tree[nodeIndex] = result
Tree.removeChilds(tree, nodeIndex)
except ValueError, e:
if (e.message == "math domain error"):
DocumentDictionary.setProcessError(False)