[PATCH v3 13/63] docs/qapi-domain: add qapi:command directive

[John Snow]

This commit adds a stubbed version of QAPICommand that utilizes the
QAPIObject class, the qapi:command directive, the :qapi:cmd:
cross-reference role, and the "command" object type in the QAPI object
registry.

They don't do anything *particularly* interesting yet, but that will
come in forthcoming commits.

Signed-off-by: John Snow <js...@redhat.com>
---
 docs/sphinx/qapi_domain.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/docs/sphinx/qapi_domain.py b/docs/sphinx/qapi_domain.py
index 3109c0cb90a..547040f75a7 100644
--- a/docs/sphinx/qapi_domain.py
+++ b/docs/sphinx/qapi_domain.py
@@ -258,6 +258,12 @@ def handle_signature(self, sig: str, signode: 
desc_signature) -> Signature:
         return sig
 
 
+class QAPICommand(QAPIObject):
+    """Description of a QAPI Command."""
+
+    # Nothing unique for now! Changed in later commits O:-)
+
+
 class QAPIModule(QAPIDescription):
     """
     Directive to mark description of a new module.
@@ -379,12 +385,14 @@ class QAPIDomain(Domain):
     # for each object type.
     object_types: Dict[str, ObjType] = {
         "module": ObjType(_("module"), "mod", "any"),
+        "command": ObjType(_("command"), "cmd", "any"),
     }
 
     # Each of these provides a rST directive,
     # e.g. .. qapi:module:: block-core
     directives = {
         "module": QAPIModule,
+        "command": QAPICommand,
     }
 
     # These are all cross-reference roles; e.g.
@@ -392,6 +400,7 @@ class QAPIDomain(Domain):
     # the object_types table values above.
     roles = {
         "mod": QAPIXRefRole(),
+        "cmd": QAPIXRefRole(),
         "any": QAPIXRefRole(),  # reference *any* type of QAPI object.
     }
 
-- 
2.48.1