docs: kdoc_item: add support to generate a KdocItem from a dict

When reading the contents on a KdocItem using YAML, the data
will be imported into a dict.

Add a method to create a new KdocItem from a dict to allow
converting such input into a real KdocItem.

While here, address an issue that, if the class is initialized
with an internal parameter outside the 4 initial arguments,
it would end being added inside other_stuff, which breaks
initializing it from a dict.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <fafeac23d1577927e1a3c32cddfbec1e0209ac73.1773823995.git.mchehab+huawei@kernel.org>

1 files changed, 34 insertions, 1 deletions

diff --git a/tools/lib/python/kdoc/kdoc_item.py b/tools/lib/python/kdoc/kdoc_item.py
index c0585cdbcbd1e..5f41790efacb2 100644
--- a/tools/lib/python/kdoc/kdoc_item.py
+++ b/tools/lib/python/kdoc/kdoc_item.py
@@ -25,12 +25,31 @@ class KdocItem:
         self.parameterdesc_start_lines = {}
         self.parameterdescs = {}
         self.parametertypes = {}
+
+        self.warnings = []
+
         #
         # Just save everything else into our own dict so that the output
         # side can grab it directly as before.  As we move things into more
         # structured data, this will, hopefully, fade away.
         #
-        self.other_stuff = other_stuff
+        known_keys = {
+            'declaration_start_line',
+            'sections',
+            'sections_start_lines',
+            'parameterlist',
+            'parameterdesc_start_lines',
+            'parameterdescs',
+            'parametertypes',
+            'warnings',
+        }
+
+        self.other_stuff = {}
+        for k, v in other_stuff.items():
+            if k in known_keys:
+                setattr(self, k, v)           # real attribute
+            else:
+                self.other_stuff[k] = v
 
     def get(self, key, default = None):
         """
@@ -41,6 +60,20 @@ class KdocItem:
     def __getitem__(self, key):
         return self.get(key)
 
+    @classmethod
+    def from_dict(cls, d):
+        """Create a KdocItem from a plain dict."""
+
+        cp = d.copy()
+        name        = cp.pop('name', None)
+        fname       = cp.pop('fname', None)
+        type        = cp.pop('type', None)
+        start_line  = cp.pop('start_line', 1)
+        other_stuff = cp.pop('other_stuff', {})
+
+        # Everything that’s left goes straight to __init__
+        return cls(name, fname, type, start_line, **cp, **other_stuff)
+
     #
     # Tracking of section and parameter information.
     #