File size: 4,605 Bytes
5f5a27c | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | import re
from abc import ABCMeta, abstractmethod
from typing import (
TYPE_CHECKING,
Any,
Callable,
Dict,
Iterable,
List,
Match,
Optional,
Tuple,
Type,
Union,
)
if TYPE_CHECKING:
from ..block_parser import BlockParser
from ..core import BlockState
from ..markdown import Markdown
class DirectiveParser(ABCMeta):
name = "directive"
@staticmethod
@abstractmethod
def parse_type(m: Match[str]) -> str:
raise NotImplementedError()
@staticmethod
@abstractmethod
def parse_title(m: Match[str]) -> str:
raise NotImplementedError()
@staticmethod
@abstractmethod
def parse_content(m: Match[str]) -> str:
raise NotImplementedError()
@classmethod
def parse_tokens(cls, block: "BlockParser", text: str, state: "BlockState") -> Iterable[Dict[str, Any]]:
if state.depth() >= block.max_nested_level - 1 and cls.name in block.rules:
rules = list(block.rules)
rules.remove(cls.name)
else:
rules = block.rules
child = state.child_state(text)
block.parse(child, rules)
return child.tokens
@staticmethod
def parse_options(m: Match[str]) -> List[Tuple[str, str]]:
text = m.group("options")
if not text.strip():
return []
options = []
for line in re.split(r"\n+", text):
line = line.strip()[1:]
if not line:
continue
i = line.find(":")
k = line[:i]
v = line[i + 1 :].strip()
options.append((k, v))
return options
class BaseDirective(metaclass=ABCMeta):
parser: Type[DirectiveParser]
directive_pattern: Optional[str] = None
def __init__(self, plugins: List["DirectivePlugin"]):
self._methods: Dict[
str,
Callable[
["BlockParser", Match[str], "BlockState"],
Union[Dict[str, Any], List[Dict[str, Any]]],
],
] = {}
self.__plugins = plugins
def register(
self,
name: str,
fn: Callable[
["BlockParser", Match[str], "BlockState"],
Union[Dict[str, Any], List[Dict[str, Any]]],
],
) -> None:
self._methods[name] = fn
def parse_method(
self, block: "BlockParser", m: Match[str], state: "BlockState"
) -> Union[Dict[str, Any], List[Dict[str, Any]]]:
_type = self.parser.parse_type(m)
method = self._methods.get(_type)
if method:
try:
token = method(block, m, state)
except ValueError as e:
token = {"type": "block_error", "raw": str(e)}
else:
text = m.group(0)
token = {
"type": "block_error",
"raw": text,
}
if isinstance(token, list):
for tok in token:
state.append_token(tok)
else:
state.append_token(token)
return token
@abstractmethod
def parse_directive(self, block: "BlockParser", m: Match[str], state: "BlockState") -> Optional[int]:
raise NotImplementedError()
def register_block_parser(self, md: "Markdown", before: Optional[str] = None) -> None:
md.block.register(
self.parser.name,
self.directive_pattern,
self.parse_directive,
before=before,
)
def __call__(self, markdown: "Markdown") -> None:
for plugin in self.__plugins:
plugin.parser = self.parser
plugin(self, markdown)
class DirectivePlugin:
parser: Type[DirectiveParser]
def __init__(self) -> None: ...
def parse_options(self, m: Match[str]) -> List[Tuple[str, str]]:
return self.parser.parse_options(m)
def parse_type(self, m: Match[str]) -> str:
return self.parser.parse_type(m)
def parse_title(self, m: Match[str]) -> str:
return self.parser.parse_title(m)
def parse_content(self, m: Match[str]) -> str:
return self.parser.parse_content(m)
def parse_tokens(self, block: "BlockParser", text: str, state: "BlockState") -> Iterable[Dict[str, Any]]:
return self.parser.parse_tokens(block, text, state)
def parse(
self, block: "BlockParser", m: Match[str], state: "BlockState"
) -> Union[Dict[str, Any], List[Dict[str, Any]]]:
raise NotImplementedError()
def __call__(self, directive: BaseDirective, md: "Markdown") -> None:
raise NotImplementedError()
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