test(lark): debugging ambiguity

Author: wpbonelli

flopy4/mf6/io/parser.py

@@ -84,6 +84,7 @@ def make_parser(
     params: Iterable[str],
     dict_blocks: Iterable[str],
     list_blocks: Iterable[str],
+    **kwargs,
 ):
     """
     Create a parser for the MODFLOW 6 input language with the given
@@ -109,4 +110,4 @@ def make_parser(
             f"LISTBLOCK: ({list_blocks})",
         ]
     )
-    return Lark(grammar, start="component")
+    return Lark(grammar, start="component", **kwargs)

test/test_lark.py

@@ -34,18 +34,20 @@
     params=["k", "i", "d", "s", "f", "a"],
     dict_blocks=["options", "packagedata"],
     list_blocks=["period"],
+    debug=True,
+    # ambiguity="explicit"  # uncomment to see ambiguous parse tree
 )
 MF6_TRANSFORMER = MF6Transformer()
 
 
 def test_parse_mf6():
     tree = MF6_PARSER.parse(COMPONENT)
-    # view the parse tree with e.g.
-    #   pytest test/test_lark.py::test_parse -s
+    # pytest -s to view the parse tree
     print(linesep + tree.pretty())
 
 
 def test_transform_mf6():
+    # fails with ambiguity="explicit"
     tree = MF6_PARSER.parse(COMPONENT)
     data = MF6_TRANSFORMER.transform(tree)
     assert data["options"] == {