[PATCH 04/14] qapi: add a 'command-features' pragma

["Daniel P. Berrangé" <berrange@redhat.com>]

The 'command-features' pragma allows for defining additional
special features that are unique to a particular QAPI schema
instance and its implementation.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 scripts/qapi/parser.py | 2 ++
 scripts/qapi/source.py | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/scripts/qapi/parser.py b/scripts/qapi/parser.py
index 7b13a583ac..36a9046243 100644
--- a/scripts/qapi/parser.py
+++ b/scripts/qapi/parser.py
@@ -243,6 +243,8 @@ def check_list_str(name: str, value: object) -> List[str]:
             pragma.documentation_exceptions = check_list_str(name, value)
         elif name == 'member-name-exceptions':
             pragma.member_name_exceptions = check_list_str(name, value)
+        elif name == 'command-features':
+            pragma.command_features = check_list_str(name, value)
         else:
             raise QAPISemError(info, "unknown pragma '%s'" % name)
 
diff --git a/scripts/qapi/source.py b/scripts/qapi/source.py
index 7b379fdc92..07c2958ac4 100644
--- a/scripts/qapi/source.py
+++ b/scripts/qapi/source.py
@@ -28,6 +28,8 @@ def __init__(self) -> None:
         self.documentation_exceptions: List[str] = []
         # Types whose member names may violate case conventions
         self.member_name_exceptions: List[str] = []
+        # Arbitrary extra features recorded against commands
+        self.command_features: List[str] = []
 
 
 class QAPISourceInfo:
-- 
2.45.1