qapi: Reserve '*List' type names for list types

Type names ending in 'List' can clash with qapi list types in
generated C.  We don't currently use such names. It is easier to
outlaw them now than to worry about how to resolve such a clash
in the future. For precedence, see commit 4dc2e69, which did the
same for names ending in 'Kind' versus implicit enum types for
qapi unions.

Update the testsuite to match.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1445898903-12082-5-git-send-email-eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

1 files changed, 4 insertions, 6 deletions

diff --git a/scripts/qapi.py b/scripts/qapi.py
index 3af4c2c..d53b5c4 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -390,10 +390,10 @@ def add_name(name, info, meta, implicit=False):
         raise QAPIExprError(info,
                             "%s '%s' is already defined"
                             % (all_names[name], name))
-    if not implicit and name.endswith('Kind'):
+    if not implicit and (name.endswith('Kind') or name.endswith('List')):
         raise QAPIExprError(info,
-                            "%s '%s' should not end in 'Kind'"
-                            % (meta, name))
+                            "%s '%s' should not end in '%s'"
+                            % (meta, name, name[-4:]))
     all_names[name] = meta
 
 
@@ -1196,9 +1196,7 @@ class QAPISchema(object):
         return name
 
     def _make_array_type(self, element_type, info):
-        # TODO fooList namespace is not reserved; user can create collisions,
-        # or abuse our type system with ['fooList'] for 2D array
-        name = element_type + 'List'
+        name = element_type + 'List'   # Use namespace reserved by add_name()
         if not self.lookup_type(name):
             self._def_entity(QAPISchemaArrayType(name, info, element_type))
         return name