Switch to linkcode extension (#4410)

* Switch to linkcode extension

Signed-off-by: Ankita Katiyar <[email protected]>

* remove os

Signed-off-by: Ankita Katiyar <[email protected]>

* remove os

Signed-off-by: Ankita Katiyar <[email protected]>

* remove os

Signed-off-by: Ankita Katiyar <[email protected]>

* Refactor

Signed-off-by: Ankita Katiyar <[email protected]>

* use os

Signed-off-by: Ankita Katiyar <[email protected]>

---------

Signed-off-by: Ankita Katiyar <[email protected]>

docs/source/conf.py

@@ -14,13 +14,16 @@
 from __future__ import annotations
 
 import importlib
+import inspect
+import os
 import re
 import sys
 from inspect import getmembers, isclass, isfunction
 from pathlib import Path
 
 from click import secho, style
 
+import kedro
 from kedro import __version__ as release
 
 # -- Project information -----------------------------------------------------
@@ -47,7 +50,7 @@
     "sphinx_autodoc_typehints",
     "sphinx.ext.doctest",
     "sphinx.ext.ifconfig",
-    "sphinx.ext.viewcode",
+    "sphinx.ext.linkcode",
     "sphinx_copybutton",
     "myst_parser",
     "notfound.extension",
@@ -534,3 +537,26 @@ def setup(app):
 
 myst_heading_anchors = 5
 myst_enable_extensions = ["colon_fence"]
+
+def linkcode_resolve(domain, info):
+    """Resolve a GitHub URL corresponding to a Python object."""
+    if domain != 'py':
+        return None
+
+    try:
+        mod = sys.modules[info['module']]
+        obj = mod
+        for attr in info['fullname'].split('.'):
+            obj = getattr(obj, attr)
+        obj = inspect.unwrap(obj)
+
+        filename = inspect.getsourcefile(obj)
+        source, lineno = inspect.getsourcelines(obj)
+        relpath = os.path.relpath(filename, start=os.path.dirname(
+          kedro.__file__))
+
+        return 'https://github.com/kedro-org/kedro/blob/main/kedro/%s#L%d#L%d' % (
+            relpath, lineno, lineno + len(source) - 1
+        )
+    except (KeyError, ImportError, AttributeError, TypeError, OSError, ValueError):
+        return None