def make_expr(prop_set, rhs, boolean_properties=None):
"""Create an AST that returns the value ``status`` given all the
properties in prop_set match.
:param prop_set: tuple of (property name, value) pairs for each
property in this expression and the value it must match
:param status: Status on RHS when all the given properties match
:param boolean_properties: Set of properties in property_order that should
be treated as boolean.
"""
root = ConditionalNode()
assert len(prop_set) > 0
expressions = []
for prop, value in prop_set:
number_types = (int, float, long)
value_cls = (NumberNode
if type(value) in number_types
else StringNode)
if prop not in boolean_properties:
expressions.append(
BinaryExpressionNode(
BinaryOperatorNode("=="),
VariableNode(prop),
value_cls(unicode(value))
))
else:
if value:
expressions.append(VariableNode(prop))
else:
expressions.append(
UnaryExpressionNode(
UnaryOperatorNode("not"),
VariableNode(prop)
))
if len(expressions) > 1:
prev = expressions[-1]
for curr in reversed(expressions[:-1]):
node = BinaryExpressionNode(
BinaryOperatorNode("and"),
curr,
prev)
prev = node
else:
node = expressions[0]
root.append(node)
if type(rhs) in number_types:
rhs_node = NumberNode(rhs)
else:
rhs_node = StringNode(rhs)
root.append(rhs_node)
return root
def make_expr(prop_set, rhs):
"""Create an AST that returns the value ``status`` given all the
properties in prop_set match.
:param prop_set: tuple of (property name, value) pairs for each
property in this expression and the value it must match
:param status: Status on RHS when all the given properties match
"""
root = ConditionalNode()
assert len(prop_set) > 0
expressions = []
for prop, value in prop_set:
if value not in (True, False):
expressions.append(
BinaryExpressionNode(
BinaryOperatorNode("=="),
VariableNode(prop),
make_node(value))
)
else:
if value:
expressions.append(VariableNode(prop))
else:
expressions.append(
UnaryExpressionNode(
UnaryOperatorNode("not"),
VariableNode(prop)
))
if len(expressions) > 1:
prev = expressions[-1]
for curr in reversed(expressions[:-1]):
node = BinaryExpressionNode(
BinaryOperatorNode("and"),
curr,
prev)
prev = node
else:
node = expressions[0]
root.append(node)
rhs_node = make_value_node(rhs)
root.append(rhs_node)
return root
def make_expr(prop_set, status):
"""Create an AST that returns the value ``status`` given all the
properties in prop_set match."""
root = ConditionalNode()
assert len(prop_set) > 0
no_value_props = set(["debug"])
expressions = []
for prop, value in prop_set:
number_types = (int, float, long)
value_cls = (NumberNode
if type(value) in number_types
else StringNode)
if prop not in no_value_props:
expressions.append(
BinaryExpressionNode(
BinaryOperatorNode("=="),
VariableNode(prop),
value_cls(unicode(value))
))
else:
if value:
expressions.append(VariableNode(prop))
else:
expressions.append(
UnaryExpressionNode(
UnaryOperatorNode("not"),
VariableNode(prop)
))
if len(expressions) > 1:
prev = expressions[-1]
for curr in reversed(expressions[:-1]):
node = BinaryExpressionNode(
BinaryOperatorNode("and"),
curr,
prev)
prev = node
else:
node = expressions[0]
root.append(node)
root.append(StringNode(status))
return root