qapi: complete implementation of unions

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

2 files changed, 36 insertions, 1 deletions

diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py
index b56225bdaa..727fb77266 100644
--- a/scripts/qapi-types.py
+++ b/scripts/qapi-types.py
@@ -117,6 +117,7 @@ struct %(name)s
 {
     %(name)sKind kind;
     union {
+        void *data;
 ''',
                 name=name)
 
@@ -269,6 +270,7 @@ for expr in exprs:
     elif expr.has_key('union'):
         ret += generate_fwd_struct(expr['union'], expr['data']) + "\n"
         ret += generate_enum('%sKind' % expr['union'], expr['data'].keys())
+        fdef.write(generate_enum_lookup('%sKind' % expr['union'], expr['data'].keys()))
     else:
         continue
     fdecl.write(ret)
@@ -283,6 +285,10 @@ for expr in exprs:
         fdef.write(generate_type_cleanup(expr['type']) + "\n")
     elif expr.has_key('union'):
         ret += generate_union(expr['union'], expr['data'])
+        ret += generate_type_cleanup_decl(expr['union'] + "List")
+        fdef.write(generate_type_cleanup(expr['union'] + "List") + "\n")
+        ret += generate_type_cleanup_decl(expr['union'])
+        fdef.write(generate_type_cleanup(expr['union']) + "\n")
     else:
         continue
     fdecl.write(ret)
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index 5160d83c4f..54117d4d2b 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -110,10 +110,38 @@ def generate_visit_union(name, members):
 
 void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const char *name, Error **errp)
 {
-}
+    Error *err = NULL;
+
+    visit_start_struct(m, (void **)obj, "%(name)s", name, sizeof(%(name)s), &err);
+    visit_type_%(name)sKind(m, &(*obj)->kind, "type", &err);
+    if (err) {
+        error_propagate(errp, err);
+        goto end;
+    }
+    switch ((*obj)->kind) {
 ''',
                  name=name)
 
+    for key in members:
+        ret += mcgen('''
+    case %(abbrev)s_KIND_%(enum)s:
+        visit_type_%(c_type)s(m, &(*obj)->%(c_name)s, "data", errp);
+        break;
+''',
+                abbrev = de_camel_case(name).upper(),
+                enum = de_camel_case(key).upper(),
+                c_type=members[key],
+                c_name=c_var(key))
+
+    ret += mcgen('''
+    default:
+        abort();
+    }
+end:
+    visit_end_struct(m, errp);
+}
+''')
+
     return ret
 
 def generate_declaration(name, members, genlist=True):
@@ -242,6 +270,7 @@ for expr in exprs:
         fdecl.write(ret)
     elif expr.has_key('union'):
         ret = generate_visit_union(expr['union'], expr['data'])
+        ret += generate_visit_list(expr['union'], expr['data'])
         fdef.write(ret)
 
         ret = generate_decl_enum('%sKind' % expr['union'], expr['data'].keys())