Add version property to Python documents

Author: davidbrochart

jupyter_ydoc/ybasedoc.py

@@ -29,6 +29,16 @@ def __init__(self, ydoc: Optional[Y.YDoc] = None):
         self._ystate = self._ydoc.get_map("state")
         self._subscriptions = {}
 
+    @property
+    @abstractmethod
+    def version(self):
+        """
+        Returns the version of the document.
+
+        :return: Document's version.
+        :rtype: str
+        """
+
     @property
     def ystate(self) -> Y.YMap:
         """

jupyter_ydoc/yblob.py

@@ -38,6 +38,16 @@ def __init__(self, ydoc: Optional[Y.YDoc] = None):
         super().__init__(ydoc)
         self._ysource = self._ydoc.get_map("source")
 
+    @property
+    def version(self):
+        """
+        Returns the version of the document.
+
+        :return: Document's version.
+        :rtype: str
+        """
+        return "0.1.0"
+
     def get(self) -> bytes:
         """
         Returns the content of the document.

jupyter_ydoc/ynotebook.py

@@ -57,6 +57,16 @@ def __init__(self, ydoc: Optional[Y.YDoc] = None):
         self._ymeta = self._ydoc.get_map("meta")
         self._ycells = self._ydoc.get_array("cells")
 
+    @property
+    def version(self):
+        """
+        Returns the version of the document.
+
+        :return: Document's version.
+        :rtype: str
+        """
+        return "0.1.0"
+
     @property
     def ycells(self):
         """

jupyter_ydoc/yunicode.py

@@ -33,6 +33,16 @@ def __init__(self, ydoc: Optional[Y.YDoc] = None):
         super().__init__(ydoc)
         self._ysource = self._ydoc.get_text("source")
 
+    @property
+    def version(self):
+        """
+        Returns the version of the document.
+
+        :return: Document's version.
+        :rtype: str
+        """
+        return "0.1.0"
+
     def get(self) -> str:
         """
         Returns the content of the document.