Přidána data na kontextu nezávislá na docu.

src/formatitko/context.py

@@ -23,6 +23,7 @@ CommandCallable = Callable[[Command, 'Context', 'NOPProcessor'], list[Element]]
 class Context:
 	parent: Union["Context", None]
 	_commands: dict[str, Union[CommandCallable, None]]
+	_data: dict[str, object]
 	doc: Doc
 	trusted: bool
 	path: str
@@ -34,6 +35,7 @@ class Context:
 	def __init__(self, doc: Doc, path: str, parent: Union['Context', None]=None, trusted: bool=True):
 		self.parent = parent
 		self._commands = {}
+		self._data = {}
 		self.doc = doc
 		self.trusted = trusted
 		self.path = path
@@ -113,6 +115,40 @@ class Context:
 		else:
 			self.set_metadata(key, data)
 
+	def get_data(self, key: str, immediate: bool=False):
+		data = self._data
+		keys = key.split(".")
+		try:
+			for k in keys:
+				data = data[k]
+			return data
+		except KeyError:
+			if self.parent and not immediate:
+				return self.parent.get_data(key)
+			else:
+				return None
+
+	def set_data(self, key: str, value: object):
+		data = self._data
+		keys = key.split(".")
+		for k in keys[:-1]:
+			try:
+				data = data[k]
+			except KeyError:
+				data[k] = {}
+				data = data[k]
+		data[keys[-1]] = value
+
+	def unset_data(self, key: str):
+		if key == "":
+			self._doc = {}
+		data = self._doc
+		keys = key.split(".")
+		for k in keys[:-1]:
+			data = data[k]
+		del data[keys[-1]]
+
+
 
 
 # This is a custom element which creates \begingroup \endgroup groups in TeX