Merge tag 'pull-qapi-2025-02-10-v2' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2025-02-10

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# gpg: Signature made Mon 10 Feb 2025 09:47:13 EST
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* tag 'pull-qapi-2025-02-10-v2' of https://repo.or.cz/qemu/armbru:
  qapi: expose all schema features to code
  qapi: rename 'special_features' to 'features'
  qapi: change 'unsigned special_features' to 'uint64_t features'
  qapi: cope with feature names containing a '-'
  qapi/ui: Fix documentation of upper bound value in InputMoveEvent
  qapi: fix colon in Since tag section
  qapi: Move and rename qapi/qmp/dispatch.h to qapi/qmp-registry.h
  qapi: Move include/qapi/qmp/ to include/qobject/

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/scripts/qapi/features.py b/scripts/qapi/features.py
new file mode 100644
index 0000000000..57563207a8
--- /dev/null
+++ b/scripts/qapi/features.py
@@ -0,0 +1,48 @@
+"""
+QAPI features generator
+
+Copyright 2024 Red Hat
+
+This work is licensed under the terms of the GNU GPL, version 2.
+# See the COPYING file in the top-level directory.
+"""
+
+from typing import ValuesView
+
+from .common import c_enum_const, c_name
+from .gen import QAPISchemaMonolithicCVisitor
+from .schema import QAPISchema, QAPISchemaFeature
+
+
+class QAPISchemaGenFeatureVisitor(QAPISchemaMonolithicCVisitor):
+
+    def __init__(self, prefix: str):
+        super().__init__(
+            prefix, 'qapi-features',
+            ' * Schema-defined QAPI features',
+            __doc__)
+
+        self.features: ValuesView[QAPISchemaFeature]
+
+    def visit_begin(self, schema: QAPISchema) -> None:
+        self.features = schema.features()
+        self._genh.add("#include \"qapi/util.h\"\n\n")
+
+    def visit_end(self) -> None:
+        self._genh.add("typedef enum {\n")
+        for f in self.features:
+            self._genh.add(f"    {c_enum_const('qapi_feature', f.name)}")
+            if f.name in QAPISchemaFeature.SPECIAL_NAMES:
+                self._genh.add(f" = {c_enum_const('qapi', f.name)},\n")
+            else:
+                self._genh.add(",\n")
+
+        self._genh.add("} " + c_name('QapiFeature') + ";\n")
+
+
+def gen_features(schema: QAPISchema,
+                 output_dir: str,
+                 prefix: str) -> None:
+    vis = QAPISchemaGenFeatureVisitor(prefix)
+    schema.visit(vis)
+    vis.write(output_dir)