replace yaml parsed/dumper w/ simple stdlib impl

pyproject.toml

@@ -7,6 +7,5 @@ requires-python = ">=3.12"
 dependencies = [
     "pydantic-settings~=2.12",
     "pynvim~=0.6.0",
-    "ruamel.yaml~=0.18.17",
     "requests>=2.32.5",
 ]

rplugin/python3/mrpy/yaml.py

@@ -1,12 +1,11 @@
-from io import StringIO
+from json import loads
-from ruamel.yaml import YAML
+from re import sub
+from textwrap import dedent
 
 from . import hints
 
-yaml = YAML(typ="safe")
 
-
+def dump_scalar(entry: hints.JSONDataScalar) -> str:
-def dump_scalar(entry: JSONDataScalar) -> str:
     match entry:
         case None:
             return "null\n"
@@ -18,7 +17,7 @@ def dump_scalar(entry: JSONDataScalar) -> str:
             return f"{entry:s}\n"
 
 
-def dump(obj: dict[str, JSONDataScalar | list[JSONDataScalar]]) -> str:
+def dump(obj: dict[str, hints.JSONDataScalar | list[hints.JSONDataScalar]]) -> str:
     ret = ""
     for key, value in obj.items():
         ret += key
@@ -35,6 +34,74 @@ def dump(obj: dict[str, JSONDataScalar | list[JSONDataScalar]]) -> str:
     return ret
 
 
-def load(content: str) -> JSONData:
+def load(content: str) -> hints.JSONData:
-    with StringIO(content) as sio:
+    """parse subset of yaml into ``JSONData``
-        return yaml.load(sio)  # pyright: ignore[reportAny, reportUnknownMemberType]
+
+    >>> from pprint import pprint
+    >>> yaml = '''
+    ...     key1: str
+    ...     key2: "str"
+    ...     key3: 1
+    ...     key4: 2.3
+    ...     key5: 2e12
+    ...     key6: null
+    ...     key7: true
+    ...     key8: false
+    ...     key9:
+    ...       - 1
+    ...       - 23.2
+    ...     key10:
+    ...       - str
+    ...       - "str"
+    ... '''
+    >>> yaml_parsed = load(yaml)
+    >>> compare = {
+    ...     'key1': 'str',
+    ...     'key2': 'str',
+    ...     'key3': 1,
+    ...     'key4': 2.3,
+    ...     'key5': 2e12,
+    ...     'key6': None,
+    ...     'key7': True,
+    ...     'key8': False,
+    ...     'key9': [1, 23.2],
+    ...     'key10': ['str', 'str'],
+    ... }
+
+    >>> {k: yaml_parsed.get(k, None) for k in compare if compare[k] != yaml_parsed[k]}
+    {}
+    """
+
+    ret = {}
+    key = None
+    value = None
+    for line in sub(r":[\s\n]*", ":\n  ", dedent(content).strip()).splitlines():
+        if line.endswith(":"):
+            if key:
+                ret[key] = value
+                value = None
+
+            key = line.removesuffix(":")
+        elif line.startswith("  -"):
+            value = value or []
+            try:
+                parsed = loads(line.removeprefix("  -").strip())
+            except:
+                parsed = loads('"' + line.removeprefix("  -").strip() + '"')
+            value.append(parsed)
+        else:
+            try:
+                value = loads(line.strip())
+            except:
+                value = loads('"' + line.strip() + '"')
+    if key:
+        ret[key] = value
+        value = None
+
+    return ret
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()