def reflected_binary_operator(op):
"""
Factory function for making binary operator methods on a Factor.
Returns a function, "reflected_binary_operator" suitable for implementing
functions like __radd__.
"""
assert not is_comparison(op)
def reflected_binary_operator(self, other):
if isinstance(self, NumericalExpression):
self_expr, other_expr, new_inputs = self.build_binary_op(op, other)
return NumExprFactor(
"({left}) {op} ({right})".format(
left=other_expr,
right=self_expr,
op=op,
),
new_inputs,
)
# Only have to handle the numeric case because in all other valid cases
# the corresponding left-binding method will be called.
elif isinstance(other, NUMERIC_TYPES):
return NumExprFactor(
"{constant} {op} x_0".format(op=op, constant=other),
binds=(self, ),
)
raise BadBinaryOperator(op, other, self)
return reflected_binary_operator
def reflected_binary_operator(op):
"""
Factory function for making binary operator methods on a Factor.
Returns a function, "reflected_binary_operator" suitable for implementing
functions like __radd__.
"""
assert not is_comparison(op)
def reflected_binary_operator(self, other):
if isinstance(self, NumericalExpression):
self_expr, other_expr, new_inputs = self.build_binary_op(
op, other
)
return NumExprFactor(
"({left}) {op} ({right})".format(
left=other_expr,
right=self_expr,
op=op,
),
new_inputs,
)
# Only have to handle the numeric case because in all other valid cases
# the corresponding left-binding method will be called.
elif isinstance(other, NUMERIC_TYPES):
return NumExprFactor(
"{constant} {op} x_0".format(op=op, constant=other),
binds=(self,),
)
raise BadBinaryOperator(op, other, self)
return reflected_binary_operator
def binop_return_type(op):
if is_comparison(op):
return NumExprFilter
else:
return NumExprFactor
def binop_return_type(op):
if is_comparison(op):
return NumExprFilter
else:
return NumExprFactor