qapi: Stop enforcing "type name should not end in 'Kind'

I'm about to convert simple unions to flat unions, then drop simple
union support.  The conversion involves making the implict enum types
explicit.  To reduce churn, I'd like to name them exactly like the
implicit types they replace.  However, these names are reserved for
the generator's use.  They won't be once simple unions are gone.  Stop
enforcing this naming rule now rather than then.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210917143134.412106-3-armbru@redhat.com>

scripts/qapi/expr.py

@@ -171,7 +171,7 @@ def check_defn_name_str(name: str, info: QAPISourceInfo, meta: str) -> None:
       - 'event' names adhere to `check_name_upper()`.
       - 'command' names adhere to `check_name_lower()`.
       - Else, meta is a type, and must pass `check_name_camel()`.
-        These names must not end with ``Kind`` nor ``List``.
+        These names must not end with ``List``.
 
     :param name: Name to check.
     :param info: QAPI schema source file information.
@@ -187,9 +187,9 @@ def check_defn_name_str(name: str, info: QAPISourceInfo, meta: str) -> None:
             permit_underscore=name in info.pragma.command_name_exceptions)
     else:
         check_name_camel(name, info, meta)
-        if name.endswith('Kind') or name.endswith('List'):
+        if name.endswith('List'):
             raise QAPISemError(
-                info, "%s name should not end in '%s'" % (meta, name[-4:]))
+                info, "%s name should not end in 'List'" % meta)
 
 
 def check_keys(value: _JSONObject,

tests/qapi-schema/meson.build

@@ -168,7 +168,6 @@ schemas = [
   'reserved-member-q.json',
   'reserved-member-u.json',
   'reserved-member-underscore.json',
-  'reserved-type-kind.json',
   'reserved-type-list.json',
   'returns-alternate.json',
   'returns-array-bad.json',

tests/qapi-schema/reserved-type-kind.err

@@ -1,2 +0,0 @@
-reserved-type-kind.json: In enum 'UnionKind':
-reserved-type-kind.json:2: enum name should not end in 'Kind'

tests/qapi-schema/reserved-type-kind.json

@@ -1,2 +0,0 @@
-# we reject types that would conflict with implicit union enum
-{ 'enum': 'UnionKind', 'data': [ 'oops' ] }