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# coding: utf-8
# Abstract classes.
from typing import Any, Dict, Optional, List # NOQA
from ruamel.yaml.tag import Tag
SHOW_LINES = False
def CommentCheck() -> None:
pass
class Event:
__slots__ = 'start_mark', 'end_mark', 'comment'
crepr = 'Unspecified Event'
def __init__(
self, start_mark: Any = None, end_mark: Any = None, comment: Any = CommentCheck,
) -> None:
self.start_mark = start_mark
self.end_mark = end_mark
# assert comment is not CommentCheck
if comment is CommentCheck:
comment = None
self.comment = comment
def __repr__(self) -> Any:
if True:
arguments = []
if hasattr(self, 'value'):
# if you use repr(getattr(self, 'value')) then flake8 complains about
# abuse of getattr with a constant. When you change to self.value
# then mypy throws an error
arguments.append(repr(self.value))
for key in ['anchor', 'tag', 'implicit', 'flow_style', 'style']:
v = getattr(self, key, None)
if v is not None:
arguments.append(f'{key!s}={v!r}')
if self.comment not in [None, CommentCheck]:
arguments.append(f'comment={self.comment!r}')
if SHOW_LINES:
arguments.append(
f'({self.start_mark.line}:{self.start_mark.column}/'
f'{self.end_mark.line}:{self.end_mark.column})',
)
arguments = ', '.join(arguments) # type: ignore
else:
attributes = [
key
for key in ['anchor', 'tag', 'implicit', 'value', 'flow_style', 'style']
if hasattr(self, key)
]
arguments = ', '.join([f'{key!s}={getattr(self, key)!r}' for key in attributes])
if self.comment not in [None, CommentCheck]:
arguments += f', comment={self.comment!r}'
return f'{self.__class__.__name__!s}({arguments!s})'
def compact_repr(self) -> str:
return f'{self.crepr}'
class NodeEvent(Event):
__slots__ = ('anchor',)
def __init__(
self, anchor: Any, start_mark: Any = None, end_mark: Any = None, comment: Any = None,
) -> None:
Event.__init__(self, start_mark, end_mark, comment)
self.anchor = anchor
class CollectionStartEvent(NodeEvent):
__slots__ = 'ctag', 'implicit', 'flow_style', 'nr_items'
def __init__(
self,
anchor: Any,
tag: Any,
implicit: Any,
start_mark: Any = None,
end_mark: Any = None,
flow_style: Any = None,
comment: Any = None,
nr_items: Optional[int] = None,
) -> None:
NodeEvent.__init__(self, anchor, start_mark, end_mark, comment)
self.ctag = tag
self.implicit = implicit
self.flow_style = flow_style
self.nr_items = nr_items
@property
def tag(self) -> Optional[str]:
return None if self.ctag is None else str(self.ctag)
class CollectionEndEvent(Event):
__slots__ = ()
# Implementations.
class StreamStartEvent(Event):
__slots__ = ('encoding',)
crepr = '+STR'
def __init__(
self,
start_mark: Any = None,
end_mark: Any = None,
encoding: Any = None,
comment: Any = None,
) -> None:
Event.__init__(self, start_mark, end_mark, comment)
self.encoding = encoding
class StreamEndEvent(Event):
__slots__ = ()
crepr = '-STR'
class DocumentStartEvent(Event):
__slots__ = 'explicit', 'version', 'tags'
crepr = '+DOC'
def __init__(
self,
start_mark: Any = None,
end_mark: Any = None,
explicit: Any = None,
version: Any = None,
tags: Any = None,
comment: Any = None,
) -> None:
Event.__init__(self, start_mark, end_mark, comment)
self.explicit = explicit
self.version = version
self.tags = tags
def compact_repr(self) -> str:
start = ' ---' if self.explicit else ''
return f'{self.crepr}{start}'
class DocumentEndEvent(Event):
__slots__ = ('explicit',)
crepr = '-DOC'
def __init__(
self,
start_mark: Any = None,
end_mark: Any = None,
explicit: Any = None,
comment: Any = None,
) -> None:
Event.__init__(self, start_mark, end_mark, comment)
self.explicit = explicit
def compact_repr(self) -> str:
end = ' ...' if self.explicit else ''
return f'{self.crepr}{end}'
class AliasEvent(NodeEvent):
__slots__ = 'style'
crepr = '=ALI'
def __init__(
self,
anchor: Any,
start_mark: Any = None,
end_mark: Any = None,
style: Any = None,
comment: Any = None,
) -> None:
NodeEvent.__init__(self, anchor, start_mark, end_mark, comment)
self.style = style
def compact_repr(self) -> str:
return f'{self.crepr} *{self.anchor}'
class ScalarEvent(NodeEvent):
__slots__ = 'ctag', 'implicit', 'value', 'style'
crepr = '=VAL'
def __init__(
self,
anchor: Any,
tag: Any,
implicit: Any,
value: Any,
start_mark: Any = None,
end_mark: Any = None,
style: Any = None,
comment: Any = None,
) -> None:
NodeEvent.__init__(self, anchor, start_mark, end_mark, comment)
self.ctag = tag
self.implicit = implicit
self.value = value
self.style = style
@property
def tag(self) -> Optional[str]:
return None if self.ctag is None else str(self.ctag)
@tag.setter
def tag(self, val: Any) -> None:
if isinstance(val, str):
val = Tag(suffix=val)
self.ctag = val
def compact_repr(self) -> str:
style = ':' if self.style is None else self.style
anchor = f'&{self.anchor} ' if self.anchor else ''
tag = f'<{self.tag!s}> ' if self.tag else ''
value = self.value
for ch, rep in [
('\\', '\\\\'),
('\t', '\\t'),
('\n', '\\n'),
('\a', ''), # remove from folded
('\r', '\\r'),
('\b', '\\b'),
]:
value = value.replace(ch, rep)
return f'{self.crepr} {anchor}{tag}{style}{value}'
class SequenceStartEvent(CollectionStartEvent):
__slots__ = ()
crepr = '+SEQ'
def compact_repr(self) -> str:
flow = ' []' if self.flow_style else ''
anchor = f' &{self.anchor}' if self.anchor else ''
tag = f' <{self.tag!s}>' if self.tag else ''
return f'{self.crepr}{flow}{anchor}{tag}'
class SequenceEndEvent(CollectionEndEvent):
__slots__ = ()
crepr = '-SEQ'
class MappingStartEvent(CollectionStartEvent):
__slots__ = ()
crepr = '+MAP'
def compact_repr(self) -> str:
flow = ' {}' if self.flow_style else ''
anchor = f' &{self.anchor}' if self.anchor else ''
tag = f' <{self.tag!s}>' if self.tag else ''
return f'{self.crepr}{flow}{anchor}{tag}'
class MappingEndEvent(CollectionEndEvent):
__slots__ = ()
crepr = '-MAP'
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