def testCompile(self):
"""Tests the Compile function."""
expression = expressions.BinaryExpression(operator='and')
expression.Compile()
expression = expressions.BinaryExpression()
with self.assertRaises(errors.ParseError):
expression.Compile()
def testAddOperands(self):
"""Tests the AddOperands function."""
expression = expressions.BinaryExpression(operator='and')
left_hand_expression = expressions.Expression()
right_hand_expression = expressions.Expression()
expression.AddOperands(left_hand_expression, right_hand_expression)
with self.assertRaises(errors.ParseError):
expression.AddOperands(None, right_hand_expression)
with self.assertRaises(errors.ParseError):
expression.AddOperands(left_hand_expression, None)
def _AddBinaryOperator(self, string=None, **unused_kwargs):
"""Adds a binary operator to the stack.
Note that this function is used as a callback by _GetNextToken.
Args:
string (str): operator, such as "and", "or", "&&" or "||".
Returns:
str: next state, which is None.
"""
expression = expressions.BinaryExpression(operator=string)
self._stack.append(expression)
return None
