Add xref to Structure

gedcom7/parser.py

@@ -23,6 +23,7 @@ def loads(string: str) -> List[GedcomStructure]:
         structure = GedcomStructure(
             tag=ext.get(data["tag"]) or data["tag"],
             pointer=data["pointer"],
+            xref=data["xref"],
             text=data["linestr"],
         )
         # handle extension tags

gedcom7/types.py

@@ -1,7 +1,10 @@
 """Classes and data types."""
 
+import re
 from typing import Optional, List
 
+from . import grammar
+
 
 class GedcomStructure:
     """Gedcom structure class."""
@@ -11,13 +14,15 @@ def __init__(
         tag: str,
         pointer: str,
         text: str,
+        xref: str,
         children: Optional[List["GedcomStructure"]] = None,
     ):
         """Initialize self."""
         self.tag = tag
         self.pointer = pointer
         self.text = text
         self.children = children or []
+        self.xref = xref
         self.parent: Optional["GedcomStructure"] = None
 
     def __repr__(self):
@@ -30,3 +35,10 @@ def __repr__(self):
             f"tag={self.tag}, pointer={self.pointer}, text={self.text}, "
             f"children={repr_children}"
         )
+
+    def as_list_enum(self) -> List[str]:
+        """Return as list enum data type."""
+        match = re.fullmatch(grammar.list_enum, self.text)
+        if not match:
+            raise ValueError(f"Cannot interpret {self.text} as type list enum")
+        return [el.strip() for el in self.text.split(",")]