Support ol start attribute (#175)

Author: sophstad

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - fail_on_diagnostics toml flag (DOP-1132)
 - Support additional ordered list labels (DOP-1129)
+- Support ordered list "start" attribute (DOP-1210)
 
 ## [v0.4.11] - 2020-06-22
 

snooty/n.py

@@ -233,9 +233,10 @@ class ListNodeItem(Parent[Node]):
 
 @dataclass
 class ListNode(Parent[ListNodeItem]):
-    __slots__ = "enumtype"
+    __slots__ = ("enumtype", "startat")
     type = "list"
     enumtype: ListEnumType
+    startat: Optional[int]
 
 
 @dataclass

snooty/parser.py

@@ -234,9 +234,16 @@ def dispatch_visit(self, node: docutils.nodes.Node) -> None:
         elif isinstance(node, docutils.nodes.definition_list_item):
             self.state.append(n.DefinitionListItem((line,), [], []))
         elif isinstance(node, docutils.nodes.bullet_list):
-            self.state.append(n.ListNode((line,), [], n.ListEnumType.unordered))
+            self.state.append(n.ListNode((line,), [], n.ListEnumType.unordered, None))
         elif isinstance(node, docutils.nodes.enumerated_list):
-            self.state.append(n.ListNode((line,), [], n.ListEnumType[node["enumtype"]]))
+            self.state.append(
+                n.ListNode(
+                    (line,),
+                    [],
+                    n.ListEnumType[node["enumtype"]],
+                    node["start"] if "start" in node else None,
+                )
+            )
         elif isinstance(node, docutils.nodes.list_item):
             self.state.append(n.ListNodeItem((line,), []))
         elif isinstance(node, docutils.nodes.title):

snooty/test_parser.py

@@ -1073,6 +1073,10 @@ def test_list() -> None:
 a. First list item
 #. Second
 #. Third
+
+e. Fifth list item
+#. Sixth
+#. Seventh
 """,
     )
     page.finish(diagnostics)
@@ -1085,6 +1089,11 @@ def test_list() -> None:
         <listItem><paragraph><text>Second</text></paragraph></listItem>
         <listItem><paragraph><text>Third</text></paragraph></listItem>
         </list>
+        <list enumtype="loweralpha" startat="5">
+        <listItem><paragraph><text>Fifth list item</text></paragraph></listItem>
+        <listItem><paragraph><text>Sixth</text></paragraph></listItem>
+        <listItem><paragraph><text>Seventh</text></paragraph></listItem>
+        </list>
         </root>""",
     )