qapi: Remove visit_start_alternate() parameter promote_int

Before the previous commit, parameter promote_int = true made
visit_start_alternate() with an input visitor avoid QTYPE_QINT
variants and create QTYPE_QFLOAT variants instead.  This was used
where QTYPE_QINT variants were invalid.

The previous commit fused QTYPE_QINT with QTYPE_QFLOAT, rendering
promote_int useless and unused.
Signed-off-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Message-Id: <20170607163635.17635-8-marcandre.lureau@redhat.com>
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>

include/qapi/visitor-impl.h

@@ -71,7 +71,7 @@ struct Visitor
      * optional for output visitors. */
     void (*start_alternate)(Visitor *v, const char *name,
                             GenericAlternate **obj, size_t size,
-                            bool promote_int, Error **errp);
+                            Error **errp);
 
     /* Optional, needed for dealloc visitor */
     void (*end_alternate)(Visitor *v, void **obj);

include/qapi/visitor.h

@@ -410,15 +410,13 @@ void visit_end_list(Visitor *v, void **list);
  * the qtype of the next thing to be visited, stored in (*@obj)->type.
  * Other visitors will leave @obj unchanged.
  *
- * If @promote_int, treat integers as QTYPE_FLOAT.
- *
  * If successful, this must be paired with visit_end_alternate() with
  * the same @obj to clean up, even if visiting the contents of the
  * alternate fails.
  */
 void visit_start_alternate(Visitor *v, const char *name,
                            GenericAlternate **obj, size_t size,
-                           bool promote_int, Error **errp);
+                           Error **errp);
 
 /*
  * Finish visiting an alternate type.

qapi/qapi-clone-visitor.c

@@ -70,7 +70,7 @@ static GenericList *qapi_clone_next_list(Visitor *v, GenericList *tail,
 
 static void qapi_clone_start_alternate(Visitor *v, const char *name,
                                        GenericAlternate **obj, size_t size,
-                                       bool promote_int, Error **errp)
+                                       Error **errp)
 {
     qapi_clone_start_struct(v, name, (void **)obj, size, errp);
 }

qapi/qapi-dealloc-visitor.c

@@ -38,7 +38,7 @@ static void qapi_dealloc_end_struct(Visitor *v, void **obj)
 
 static void qapi_dealloc_start_alternate(Visitor *v, const char *name,
                                          GenericAlternate **obj, size_t size,
-                                         bool promote_int, Error **errp)
+                                         Error **errp)
 {
 }
 

qapi/qapi-visit-core.c

@@ -106,15 +106,15 @@ void visit_end_list(Visitor *v, void **obj)
 
 void visit_start_alternate(Visitor *v, const char *name,
                            GenericAlternate **obj, size_t size,
-                           bool promote_int, Error **errp)
+                           Error **errp)
 {
     Error *err = NULL;
 
     assert(obj && size >= sizeof(GenericAlternate));
     assert(!(v->type & VISITOR_OUTPUT) || *obj);
-    trace_visit_start_alternate(v, name, obj, size, promote_int);
+    trace_visit_start_alternate(v, name, obj, size);
     if (v->start_alternate) {
-        v->start_alternate(v, name, obj, size, promote_int, &err);
+        v->start_alternate(v, name, obj, size, &err);
     }
     if (v->type & VISITOR_INPUT) {
         assert(v->start_alternate && !err != !*obj);

qapi/qobject-input-visitor.c

@@ -367,7 +367,7 @@ static void qobject_input_end_list(Visitor *v, void **obj)
 
 static void qobject_input_start_alternate(Visitor *v, const char *name,
                                           GenericAlternate **obj, size_t size,
-                                          bool promote_int, Error **errp)
+                                          Error **errp)
 {
     QObjectInputVisitor *qiv = to_qiv(v);
     QObject *qobj = qobject_input_get_object(qiv, name, false, errp);

qapi/trace-events

@@ -11,7 +11,7 @@ visit_next_list(void *v, void *tail, size_t size) "v=%p tail=%p size=%zu"
 visit_check_list(void *v) "v=%p"
 visit_end_list(void *v, void *obj) "v=%p obj=%p"
 
-visit_start_alternate(void *v, const char *name, void *obj, size_t size, bool promote_int) "v=%p name=%s obj=%p size=%zu promote_int=%d"
+visit_start_alternate(void *v, const char *name, void *obj, size_t size) "v=%p name=%s obj=%p size=%zu"
 visit_end_alternate(void *v, void *obj) "v=%p obj=%p"
 
 visit_optional(void *v, const char *name, bool *present) "v=%p name=%s present=%p"

scripts/qapi-visit.py

@@ -161,20 +161,14 @@ void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s *obj, Error
 
 
 def gen_visit_alternate(name, variants):
-    promote_int = 'true'
-    ret = ''
-    for var in variants.variants:
-        if var.type.alternate_qtype() == 'QTYPE_QNUM':
-            promote_int = 'false'
-
-    ret += mcgen('''
+    ret = mcgen('''
 
 void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, Error **errp)
 {
     Error *err = NULL;
 
     visit_start_alternate(v, name, (GenericAlternate **)obj, sizeof(**obj),
-                          %(promote_int)s, &err);
+                          &err);
     if (err) {
         goto out;
     }
@@ -183,7 +177,7 @@ void visit_type_%(c_name)s(Visitor *v, const char *name, %(c_name)s **obj, Error
     }
     switch ((*obj)->type) {
 ''',
-                 c_name=c_name(name), promote_int=promote_int)
+                 c_name=c_name(name))
 
     for var in variants.variants:
         ret += mcgen('''

tests/test-qobject-input-visitor.c

@@ -1105,7 +1105,7 @@ static void test_visitor_in_fail_struct_missing(TestInputVisitorData *data,
     error_free_or_abort(&err);
     visit_start_list(v, "list", NULL, 0, &err);
     error_free_or_abort(&err);
-    visit_start_alternate(v, "alternate", &alt, sizeof(*alt), false, &err);
+    visit_start_alternate(v, "alternate", &alt, sizeof(*alt), &err);
     error_free_or_abort(&err);
     visit_optional(v, "optional", &present);
     g_assert(!present);