def sequence_node_to_type(node):
children = node.GetChildren()
class_name = node.GetClass()
if len(children) != 1:
raise ValueError('%s node expects exactly 1 child, got %s' %
(class_name, len(children)))
sequence_child = children[0]
sequence_child_class = sequence_child.GetClass()
if sequence_child_class != 'Type':
raise ValueError('Unrecognized node class: %s' % sequence_child_class)
element_type = type_node_to_type(sequence_child)
if class_name == 'Sequence':
sequence_type = IdlSequenceType(element_type)
elif class_name == 'FrozenArray':
sequence_type = IdlFrozenArrayType(element_type)
else:
raise ValueError('Unexpected node: %s' % class_name)
if node.GetProperty('NULLABLE'):
return IdlNullableType(sequence_type)
return sequence_type
def test_idl_types(self):
idl_type = IdlRecordType(IdlType('USVString'), IdlType('long'))
idl_types = list(idl_type.idl_types())
self.assertEqual(len(idl_types), 3)
self.assertIs(idl_types[0], idl_type)
self.assertEqual(idl_types[1].name, 'USVString')
self.assertEqual(idl_types[2].name, 'Long')
self.assertListEqual(
list(idl_type.idl_types()),
[idl_type, idl_type.key_type, idl_type.value_type])
idl_type = IdlRecordType(
IdlType('DOMString'),
IdlSequenceType(IdlType('unrestricted float')))
idl_types = list(idl_type.idl_types())
self.assertEqual(len(idl_types), 4)
self.assertIs(idl_types[0], idl_type)
self.assertEqual(idl_types[1].name, 'String')
self.assertEqual(idl_types[2].name, 'UnrestrictedFloatSequence')
self.assertEqual(idl_types[3].name, 'UnrestrictedFloat')
self.assertListEqual(list(idl_type.idl_types()), [
idl_type, idl_type.key_type, idl_type.value_type,
idl_type.value_type.element_type
])
idl_type = IdlRecordType(
IdlType('ByteString'),
IdlRecordType(IdlType('DOMString'), IdlType('octet')))
idl_types = list(idl_type.idl_types())
self.assertEqual(len(idl_types), 5)
self.assertIs(idl_types[0], idl_type)
self.assertEqual(idl_types[1].name, 'ByteString')
self.assertEqual(idl_types[2].name, 'StringOctetRecord')
self.assertEqual(idl_types[3].name, 'String')
self.assertEqual(idl_types[4].name, 'Octet')
self.assertListEqual(list(idl_type.idl_types()), [
idl_type, idl_type.key_type, idl_type.value_type,
idl_type.value_type.key_type, idl_type.value_type.value_type
])
def test_flattened_member_types(self):
# We are only testing the algorithm here, so we do create some ambiguous union types.
def compare_flattened_members(actual, expected):
"""Compare a set of IDL types by name, as the objects are different"""
actual_names = set([member.name for member in actual])
expected_names = set([member.name for member in expected])
self.assertEqual(actual_names, expected_names)
idl_type = IdlUnionType([IdlType('long'), IdlType('SomeInterface')])
compare_flattened_members(
idl_type.flattened_member_types,
set([IdlType('long'), IdlType('SomeInterface')]))
idl_type = IdlUnionType([
IdlUnionType([IdlType('ByteString'),
IdlType('float')]),
IdlType('boolean')
])
compare_flattened_members(
idl_type.flattened_member_types,
set([IdlType('float'),
IdlType('boolean'),
IdlType('ByteString')]))
idl_type = IdlUnionType([
IdlUnionType([IdlType('ByteString'),
IdlType('DOMString')]),
IdlType('DOMString')
])
compare_flattened_members(
idl_type.flattened_member_types,
set([IdlType('DOMString'),
IdlType('ByteString')]))
idl_type = IdlUnionType(
[IdlNullableType(IdlType('ByteString')),
IdlType('byte')])
compare_flattened_members(
idl_type.flattened_member_types,
set([IdlType('ByteString'), IdlType('byte')]))
idl_type = IdlUnionType([
IdlNullableType(IdlType('ByteString')),
IdlType('byte'),
IdlUnionType([IdlType('ByteString'),
IdlType('float')])
])
self.assertEqual(len(idl_type.flattened_member_types), 3)
compare_flattened_members(
idl_type.flattened_member_types,
set([IdlType('ByteString'),
IdlType('byte'),
IdlType('float')]))
# From the example in the spec: "the flattened member types of the union type (Node or (sequence<long> or Event) or
# (XMLHttpRequest or DOMString)? or sequence<(sequence<double> or NodeList)>) are the six types Node, sequence<long>,
# Event, XMLHttpRequest, DOMString and sequence<(sequence<double> or NodeList)>"
idl_type = IdlUnionType([
IdlType('Node'),
IdlUnionType([IdlSequenceType(IdlType('long')),
IdlType('Event')]),
IdlNullableType(
IdlUnionType([IdlType('XMLHttpRequest'),
IdlType('DOMString')])),
IdlSequenceType(
IdlUnionType(
[IdlSequenceType(IdlType('double')),
IdlType('NodeList')]))
])
self.assertEqual(len(idl_type.flattened_member_types), 6)
compare_flattened_members(
idl_type.flattened_member_types,
set([
IdlType('Node'),
IdlSequenceType(IdlType('long')),
IdlType('Event'),
IdlType('XMLHttpRequest'),
IdlType('DOMString'),
IdlSequenceType(
IdlUnionType([
IdlSequenceType(IdlType('double')),
IdlType('NodeList')
]))
]))