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from __future__ import annotations
if False: # MYPY
from typing import Any, Dict, Iterator, List, Optional, Union # NOQA
merge_attrib = '_yaml_merge'
class MergeValue:
attrib = merge_attrib
def __init__(self) -> None:
self.value: List[Any] = []
self.sequence = None
self.merge_pos: Optional[int] = None # position of merge in the mapping
def __getitem__(self, index: Any) -> Any:
return self.value[index]
def __setitem__(self, index: Any, val: Any) -> None:
self.value[index] = val
def __repr__(self) -> Any:
return f'MergeValue({self.value!r})'
def __len__(self) -> Any:
return len(self.value)
def append(self, elem: Any) -> Any:
self.value.append(elem)
def extend(self, elements: Any) -> None:
self.value.extend(elements)
def set_sequence(self, seq: Any) -> None:
# print('mergevalue.set_sequence node', node.anchor)
self.sequence = seq
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