def load(self, context: ILoadingContext, field: IBaseField) -> Any:
if not context.expect_sequence():
return UNDEFINED
node = context.current_node()
assert isinstance(node, SequenceNode)
for child in node.value:
result = context.load(field, child)
if result is not UNDEFINED:
return result
return UNDEFINED
def _load(self, context: ILoadingContext) -> Any:
if not context.expect_sequence():
return UNDEFINED
node = context.current_node()
result = []
for item_node in node.value:
item = context.load(self._item_field, item_node)
if item is UNDEFINED:
continue
result.append(item)
return result
def load(self, context: ILoadingContext, field: IBaseField) -> Any:
if not context.expect_sequence():
return UNDEFINED
node = context.current_node()
result: Optional[Union[Dict[str, Any], List[Any]]] = None
for child in node.value:
child_result = context.load(field, child)
if child_result is UNDEFINED:
continue
if isinstance(child_result, dict):
if result is None:
result = {}
assert isinstance(result, dict)
result.update(child_result)
elif isinstance(child_result, list):
if result is None:
result = []
assert isinstance(result, list)
result += child_result
else:
msg = _("Trying to merge invalid object {}, expected dict or "
"list")
context.error(ErrorCode.VALUE_ERROR, msg, result)
# If nothing it's to merge, return UNDEFINED
if result is None:
return UNDEFINED
return result