Docs: Fixes and improvements in API documentation

Fixes several notable mistakes and missing information
regarding the API documentation (*.rst).

This will allow API stub generators like bpystubgen or
fake-bpy-module to produce more accurate result.

Differential Revision: https://developer.blender.org/D12639

6 files changed, 62 insertions, 22 deletions

diff --git a/extern/audaspace/bindings/python/PySound.cpp b/extern/audaspace/bindings/python/PySound.cpp
index 2236057e7d2..1f149482914 100644
--- a/extern/audaspace/bindings/python/PySound.cpp
+++ b/extern/audaspace/bindings/python/PySound.cpp
@@ -290,7 +290,7 @@ PyDoc_STRVAR(M_aud_Sound_buffer_doc,
 			 ".. classmethod:: buffer(data, rate)\n\n"
 			 "   Creates a sound from a data buffer.\n\n"
 			 "   :arg data: The data as two dimensional numpy array.\n"
-			 "   :type data: numpy.ndarray\n"
+			 "   :type data: :class:`numpy.ndarray`\n"
 			 "   :arg rate: The sample rate.\n"
 			 "   :type rate: double\n"
 			 "   :return: The created :class:`Sound` object.\n"
diff --git a/release/scripts/modules/bpy/path.py b/release/scripts/modules/bpy/path.py
index 30f93d051e5..37bdb939c07 100644
--- a/release/scripts/modules/bpy/path.py
+++ b/release/scripts/modules/bpy/path.py
@@ -67,6 +67,8 @@ def abspath(path, *, start=None, library=None):
     :arg library: The library this path is from. This is only included for
        convenience, when the library is not None its path replaces *start*.
     :type library: :class:`bpy.types.Library`
+    :return: The absolute path.
+    :rtype: string
     """
     if isinstance(path, bytes):
         if path.startswith(b"//"):
@@ -101,6 +103,8 @@ def relpath(path, *, start=None):
     :arg start: Relative to this path,
        when not set the current filename is used.
     :type start: string or bytes
+    :return: The relative path.
+    :rtype: string
     """
     if isinstance(path, bytes):
         if not path.startswith(b"//"):
@@ -123,6 +127,8 @@ def is_subdir(path, directory):
 
     :arg path: An absolute path.
     :type path: string or bytes
+    :return: Whether or not the path is a subdirectory.
+    :rtype: boolean
     """
     from os.path import normpath, normcase, sep
     path = normpath(normcase(path))
@@ -141,6 +147,12 @@ def clean_name(name, *, replace="_"):
     such as writing to a file.
     All characters besides A-Z/a-z, 0-9 are replaced with "_"
     or the *replace* argument if defined.
+    :arg name: The path name.
+    :type name: string or bytes
+    :arg replace: The replacement for non-valid characters.
+    :type replace: string
+    :return: The cleaned name.
+    :rtype: string
     """
 
     if replace != "_":
@@ -207,8 +219,14 @@ def display_name(name, *, has_ext=True, title_case=True):
     Creates a display string from name to be used menus and the user interface.
     Intended for use with filenames and module names.
 
-    :arg has_ext: Remove file extension from name
-    :arg title_case: Convert lowercase names to title case
+    :arg name: The name to be used for displaying the user interface.
+    :type name: string
+    :arg has_ext: Remove file extension from name.
+    :type has_ext: boolean
+    :arg title_case: Convert lowercase names to title case.
+    :type title_case: boolean
+    :return: The display string.
+    :rtype: string
     """
 
     if has_ext:
@@ -233,6 +251,10 @@ def display_name_to_filepath(name):
     """
     Performs the reverse of display_name using literal versions of characters
     which aren't supported in a filepath.
+    :arg name: The display name to convert.
+    :type name: string
+    :return: The file path.
+    :rtype: string
     """
     for disp_value, file_value in _display_name_literals.items():
         name = name.replace(disp_value, file_value)
@@ -243,6 +265,10 @@ def display_name_from_filepath(name):
     """
     Returns the path stripped of directory and extension,
     ensured to be utf8 compatible.
+    :arg name: The file path to convert.
+    :type name: string
+    :return: The display name.
+    :rtype: string
     """
 
     name = _os.path.splitext(basename(name))[0]
@@ -254,6 +280,10 @@ def resolve_ncase(path):
     """
     Resolve a case insensitive path on a case sensitive system,
     returning a string with the path if found else return the original path.
+    :arg path: The path name to resolve.
+    :type path: string
+    :return: The resolved path.
+    :rtype: string
     """
 
     def _ncase_path_found(path):
@@ -315,11 +345,15 @@ def ensure_ext(filepath, ext, *, case_sensitive=False):
     """
     Return the path with the extension added if it is not already set.
 
+    :arg filepath: The file path.
+    :type filepath: string
     :arg ext: The extension to check for, can be a compound extension. Should
               start with a dot, such as '.blend' or '.tar.gz'.
     :type ext: string
     :arg case_sensitive: Check for matching case when comparing extensions.
-    :type case_sensitive: bool
+    :type case_sensitive: boolean
+    :return: The file path with the given extension.
+    :rtype: string
     """
 
     if case_sensitive:
@@ -341,7 +375,7 @@ def module_names(path, *, recursive=False):
     :arg recursive: Also return submodule names for packages.
     :type recursive: bool
     :return: a list of string pairs (module_name, module_file).
-    :rtype: list
+    :rtype: list of strings
     """
 
     from os.path import join, isfile
@@ -374,6 +408,8 @@ def basename(path):
     Equivalent to ``os.path.basename``, but skips a "//" prefix.
 
     Use for Windows compatibility.
+    :return: The base name of the given path.
+    :rtype: string
     """
     return _os.path.basename(path[2:] if path[:2] in {"//", b"//"} else path)
 
@@ -381,6 +417,10 @@ def basename(path):
 def native_pathsep(path):
     """
     Replace the path separator with the systems native ``os.sep``.
+    :arg path: The path to replace.
+    :type path: string
+    :return: The path with system native separators.
+    :rtype: string
     """
     if type(path) is str:
         if _os.sep == "/":
@@ -407,9 +447,9 @@ def reduce_dirs(dirs):
     (Useful for recursive path searching).
 
     :arg dirs: Sequence of directory paths.
-    :type dirs: sequence
+    :type dirs: sequence of strings
     :return: A unique list of paths.
-    :rtype: list
+    :rtype: list of strings
     """
     dirs = list({_os.path.normpath(_os.path.abspath(d)) for d in dirs})
     dirs.sort(key=lambda d: len(d))
diff --git a/source/blender/python/generic/bl_math_py_api.c b/source/blender/python/generic/bl_math_py_api.c
index f17aaa4ca5d..5e938db0c35 100644
--- a/source/blender/python/generic/bl_math_py_api.c
+++ b/source/blender/python/generic/bl_math_py_api.c
@@ -77,14 +77,14 @@ static PyObject *py_bl_math_clamp(PyObject *UNUSED(self), PyObject *args)
 }
 
 PyDoc_STRVAR(py_bl_math_lerp_doc,
-             ".. function:: lerp(from, to, factor)\n"
+             ".. function:: lerp(from_value, to_value, factor)\n"
              "\n"
              "   Linearly interpolate between two float values based on factor.\n"
              "\n"
-             "   :arg from: The value to return when factor is 0.\n"
-             "   :type from: float\n"
-             "   :arg to: The value to return when factor is 1.\n"
-             "   :type to: float\n"
+             "   :arg from_value: The value to return when factor is 0.\n"
+             "   :type from_value: float\n"
+             "   :arg to_value: The value to return when factor is 1.\n"
+             "   :type to_value: float\n"
              "   :arg factor: The interpolation value, normally in [0.0, 1.0].\n"
              "   :type factor: float\n"
              "   :return: The interpolated value.\n"
@@ -101,15 +101,15 @@ static PyObject *py_bl_math_lerp(PyObject *UNUSED(self), PyObject *args)
 
 PyDoc_STRVAR(
     py_bl_math_smoothstep_doc,
-    ".. function:: smoothstep(from, to, value)\n"
+    ".. function:: smoothstep(from_value, to_value, value)\n"
     "\n"
-    "   Performs smooth interpolation between 0 and 1 as value changes between from and to.\n"
+    "   Performs smooth interpolation between 0 and 1 as value changes between from and to values.\n"
     "   Outside the range the function returns the same value as the nearest edge.\n"
     "\n"
-    "   :arg from: The edge value where the result is 0.\n"
-    "   :type from: float\n"
-    "   :arg to: The edge value where the result is 1.\n"
-    "   :type to: float\n"
+    "   :arg from_value: The edge value where the result is 0.\n"
+    "   :type from_value: float\n"
+    "   :arg to_value: The edge value where the result is 1.\n"
+    "   :type to_value: float\n"
     "   :arg factor: The interpolation value.\n"
     "   :type factor: float\n"
     "   :return: The interpolated value in [0.0, 1.0].\n"
diff --git a/source/blender/python/gpu/gpu_py_texture.c b/source/blender/python/gpu/gpu_py_texture.c
index 5d136921300..c034c31d828 100644
--- a/source/blender/python/gpu/gpu_py_texture.c
+++ b/source/blender/python/gpu/gpu_py_texture.c
@@ -536,7 +536,7 @@ PyDoc_STRVAR(pygpu_texture_from_image_doc,
              "premultiplied or straight alpha matching the image alpha mode.\n"
              "\n"
              "   :arg image: The Image datablock.\n"
-             "   :type image: `bpy.types.Image`\n"
+             "   :type image: :class:`bpy.types.Image`\n"
              "   :return: The GPUTexture used by the image.\n"
              "   :rtype: :class:`gpu.types.GPUTexture`\n");
 static PyObject *pygpu_texture_from_image(PyObject *UNUSED(self), PyObject *arg)
diff --git a/source/blender/python/intern/bpy_rna.c b/source/blender/python/intern/bpy_rna.c
index 1296a6c174c..7b1877f3191 100644
--- a/source/blender/python/intern/bpy_rna.c
+++ b/source/blender/python/intern/bpy_rna.c
@@ -8786,7 +8786,7 @@ void pyrna_free_types(void)
  * - Should still be fixed - Campbell
  */
 PyDoc_STRVAR(pyrna_register_class_doc,
-             ".. method:: register_class(cls)\n"
+             ".. function:: register_class(cls)\n"
              "\n"
              "   Register a subclass of a Blender type class.\n"
              "\n"
@@ -8971,7 +8971,7 @@ static int pyrna_srna_contains_pointer_prop_srna(StructRNA *srna_props,
 }
 
 PyDoc_STRVAR(pyrna_unregister_class_doc,
-             ".. method:: unregister_class(cls)\n"
+             ".. function:: unregister_class(cls)\n"
              "\n"
              "   Unload the Python class from blender.\n"
              "\n"
diff --git a/source/blender/python/mathutils/mathutils_noise.c b/source/blender/python/mathutils/mathutils_noise.c
index 69d37b345c6..d5e27496af8 100644
--- a/source/blender/python/mathutils/mathutils_noise.c
+++ b/source/blender/python/mathutils/mathutils_noise.c
@@ -562,7 +562,7 @@ PyDoc_STRVAR(M_Noise_turbulence_vector_doc,
              "   :type octaves: int\n"
              "   :arg hard: Specifies whether returned turbulence is hard (sharp transitions) or "
              "soft (smooth transitions).\n"
-             "   :type hard: :boolean\n" BPY_NOISE_BASIS_ENUM_DOC
+             "   :type hard: boolean\n" BPY_NOISE_BASIS_ENUM_DOC
              "   :arg amplitude_scale: The amplitude scaling factor.\n"
              "   :type amplitude_scale: float\n"
              "   :arg frequency_scale: The frequency scaling factor\n"