feat: Support cross-referencing constructor parameters in instance at…

…tribute values

src/mkdocstrings_handlers/python/handler.py

@@ -305,6 +305,11 @@ def update_env(self, config: Any) -> None:  # noqa: ARG002
         self.env.tests["existing_template"] = lambda template_name: template_name in self.env.list_templates()
 
     def get_aliases(self, identifier: str) -> tuple[str, ...]:  # noqa: D102 (ignore missing docstring)
+        if "(" in identifier:
+            identifier, parameter = identifier.split("(", 1)
+            parameter.removesuffix(")")
+        else:
+            parameter = ""
         try:
             data = self._modules_collection[identifier]
         except (KeyError, AliasResolutionError):
@@ -315,7 +320,9 @@ def get_aliases(self, identifier: str) -> tuple[str, ...]:  # noqa: D102 (ignore
                 if alias not in aliases:
                     aliases.append(alias)
         except AliasResolutionError:
-            return tuple(aliases)
+            pass
+        if parameter:
+            return tuple(f"{alias}({parameter})" for alias in aliases)
         return tuple(aliases)
 
     def normalize_extension_paths(self, extensions: Sequence) -> Sequence:

src/mkdocstrings_handlers/python/rendering.py

@@ -32,7 +32,7 @@
 from mkdocstrings.loggers import get_logger
 
 if TYPE_CHECKING:
-    from collections.abc import Sequence
+    from collections.abc import Iterator, Sequence
 
     from griffe import Attribute, Class, Function, Module
     from jinja2 import Environment, Template
@@ -326,26 +326,47 @@ def repl(match: Match) -> str:
     return Markup(text).format(**variables)
 
 
-def do_split_path(path: str, full_path: str) -> list[tuple[str, str]]:
+_split_path_re = re.compile(r"([.(]?)([\w]+)(\))?")
+_splitable_re = re.compile(r"[().]")
+
+
+def do_split_path(path: str, full_path: str) -> Iterator[tuple[str, str, str, str]]:
     """Split object paths for building cross-references.
 
     Parameters:
         path: The path to split.
+        full_path: The full path, used to compute correct paths for each part of the path.
 
-    Returns:
-        A list of pairs (title, full path).
+    Yields:
+        4-tuples: prefix, word, full path, suffix.
     """
-    if "." not in path:
-        return [(path, full_path)]
-    pairs = []
-    full_path = ""
-    for part in path.split("."):
-        if full_path:
-            full_path += f".{part}"
-        else:
-            full_path = part
-        pairs.append((part, full_path))
-    return pairs
+    # Path is a single word, yield full path directly.
+    if not _splitable_re.search(path):
+        yield ("", path, full_path, "")
+        return
+
+    current_path = ""
+    if path == full_path:
+        # Split full path and yield directly without storing data in a dict.
+        for match in _split_path_re.finditer(full_path):
+            prefix, word, suffix = match.groups()
+            current_path = f"{current_path}{prefix}{word}{suffix or ''}" if current_path else word
+            yield prefix or "", word, current_path, suffix or ""
+        return
+
+    # Split full path first to store tuples in a dict.
+    elements = {}
+    for match in _split_path_re.finditer(full_path):
+        prefix, word, suffix = match.groups()
+        current_path = f"{current_path}{prefix}{word}{suffix or ''}" if current_path else word
+        elements[word] = (prefix or "", word, current_path, suffix or "")
+
+    # Then split path and pick tuples from the dict.
+    first = True
+    for match in _split_path_re.finditer(path):
+        prefix, word, current_path, suffix = elements[match.group(2)]
+        yield "" if first else prefix, word, current_path, suffix
+        first = False
 
 
 def _keep_object(name: str, filters: Sequence[tuple[Pattern, bool]]) -> bool:

src/mkdocstrings_handlers/python/templates/material/_base/expression.html.jinja

@@ -31,7 +31,8 @@ which is a tree-like structure representing a Python expression.
     {%- elif annotation_path == "full" -%}
       {%- set annotation = full -%}
     {%- endif -%}
-    {%- for title, path in annotation|split_path(full) -%}
+    {%- for prefix, title, path, suffix in annotation|split_path(full) -%}
+      {{ prefix }}
       {%- if not signature -%}
         {#- Always render cross-references outside of signatures. We don't need to stash them. -#}
         <autoref identifier="{{ path }}" optional{% if title != path %} hover{% endif %}>{{ title }}</autoref>
@@ -44,7 +45,7 @@ which is a tree-like structure representing a Python expression.
         {#- We're in a signature but cross-references are disabled, we just render the title. -#}
         {{ title }}
       {%- endif -%}
-      {%- if not loop.last -%}.{%- endif -%}
+      {{ suffix }}
     {%- endfor -%}
   {%- endwith -%}
 {%- endmacro -%}