qapi: merge QInt and QFloat in QNum

We would like to use a same QObject type to represent numbers, whether
they are int, uint, or floats. Getters will allow some compatibility
between the various types if the number fits other representations.

Add a few more tests while at it.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20170607163635.17635-7-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[parse_stats_intervals() simplified a bit, comment in
test_visitor_in_int_overflow() tidied up, suppress bogus warnings]
Signed-off-by: Markus Armbruster <armbru@redhat.com>

2 files changed, 16 insertions, 31 deletions

diff --git a/qapi/qobject-input-visitor.c b/qapi/qobject-input-visitor.c
index 26ef49a60b..b24f99d698 100644
--- a/qapi/qobject-input-visitor.c
+++ b/qapi/qobject-input-visitor.c
@@ -378,9 +378,6 @@ static void qobject_input_start_alternate(Visitor *v, const char *name,
     }
     *obj = g_malloc0(size);
     (*obj)->type = qobject_type(qobj);
-    if (promote_int && (*obj)->type == QTYPE_QINT) {
-        (*obj)->type = QTYPE_QFLOAT;
-    }
 }
 
 static void qobject_input_type_int64(Visitor *v, const char *name, int64_t *obj,
@@ -388,22 +385,18 @@ static void qobject_input_type_int64(Visitor *v, const char *name, int64_t *obj,
 {
     QObjectInputVisitor *qiv = to_qiv(v);
     QObject *qobj = qobject_input_get_object(qiv, name, true, errp);
-    QInt *qint;
+    QNum *qnum;
 
     if (!qobj) {
         return;
     }
-    qint = qobject_to_qint(qobj);
-    if (!qint) {
+    qnum = qobject_to_qnum(qobj);
+    if (!qnum || !qnum_get_try_int(qnum, obj)) {
         error_setg(errp, QERR_INVALID_PARAMETER_TYPE,
                    full_name(qiv, name), "integer");
-        return;
     }
-
-    *obj = qint_get_int(qint);
 }
 
-
 static void qobject_input_type_int64_keyval(Visitor *v, const char *name,
                                             int64_t *obj, Error **errp)
 {
@@ -424,22 +417,21 @@ static void qobject_input_type_int64_keyval(Visitor *v, const char *name,
 static void qobject_input_type_uint64(Visitor *v, const char *name,
                                       uint64_t *obj, Error **errp)
 {
-    /* FIXME: qobject_to_qint mishandles values over INT64_MAX */
+    /* FIXME: qobject_to_qnum mishandles values over INT64_MAX */
     QObjectInputVisitor *qiv = to_qiv(v);
     QObject *qobj = qobject_input_get_object(qiv, name, true, errp);
-    QInt *qint;
+    QNum *qnum;
+    int64_t val;
 
     if (!qobj) {
         return;
     }
-    qint = qobject_to_qint(qobj);
-    if (!qint) {
+    qnum = qobject_to_qnum(qobj);
+    if (!qnum || !qnum_get_try_int(qnum, &val)) {
         error_setg(errp, QERR_INVALID_PARAMETER_TYPE,
                    full_name(qiv, name), "integer");
-        return;
     }
-
-    *obj = qint_get_int(qint);
+    *obj = val;
 }
 
 static void qobject_input_type_uint64_keyval(Visitor *v, const char *name,
@@ -534,26 +526,19 @@ static void qobject_input_type_number(Visitor *v, const char *name, double *obj,
 {
     QObjectInputVisitor *qiv = to_qiv(v);
     QObject *qobj = qobject_input_get_object(qiv, name, true, errp);
-    QInt *qint;
-    QFloat *qfloat;
+    QNum *qnum;
 
     if (!qobj) {
         return;
     }
-    qint = qobject_to_qint(qobj);
-    if (qint) {
-        *obj = qint_get_int(qobject_to_qint(qobj));
-        return;
-    }
-
-    qfloat = qobject_to_qfloat(qobj);
-    if (!qfloat) {
+    qnum = qobject_to_qnum(qobj);
+    if (!qnum) {
         error_setg(errp, QERR_INVALID_PARAMETER_TYPE,
                    full_name(qiv, name), "number");
         return;
     }
 
-    *obj = qfloat_get_double(qobject_to_qfloat(qobj));
+    *obj = qnum_get_double(qnum);
 }
 
 static void qobject_input_type_number_keyval(Visitor *v, const char *name,
diff --git a/qapi/qobject-output-visitor.c b/qapi/qobject-output-visitor.c
index 871127079d..2ca5093b22 100644
--- a/qapi/qobject-output-visitor.c
+++ b/qapi/qobject-output-visitor.c
@@ -144,7 +144,7 @@ static void qobject_output_type_int64(Visitor *v, const char *name,
                                       int64_t *obj, Error **errp)
 {
     QObjectOutputVisitor *qov = to_qov(v);
-    qobject_output_add(qov, name, qint_from_int(*obj));
+    qobject_output_add(qov, name, qnum_from_int(*obj));
 }
 
 static void qobject_output_type_uint64(Visitor *v, const char *name,
@@ -152,7 +152,7 @@ static void qobject_output_type_uint64(Visitor *v, const char *name,
 {
     /* FIXME values larger than INT64_MAX become negative */
     QObjectOutputVisitor *qov = to_qov(v);
-    qobject_output_add(qov, name, qint_from_int(*obj));
+    qobject_output_add(qov, name, qnum_from_int(*obj));
 }
 
 static void qobject_output_type_bool(Visitor *v, const char *name, bool *obj,
@@ -177,7 +177,7 @@ static void qobject_output_type_number(Visitor *v, const char *name,
                                        double *obj, Error **errp)
 {
     QObjectOutputVisitor *qov = to_qov(v);
-    qobject_output_add(qov, name, qfloat_from_double(*obj));
+    qobject_output_add(qov, name, qnum_from_double(*obj));
 }
 
 static void qobject_output_type_any(Visitor *v, const char *name,