[Qemu-devel] [PATCH v2 12/14] qlit: improve QLit list vs qlist comparison

[Marc-André Lureau]

Use QLIST_FOREACH_ENTRY() to simplify the code and break earlier.

Check that the QLit list has the same size as the qlist, this should
ensure that we have an exact match when iterating over qlist for
comparing the elements.

Signed-off-by: Marc-André Lureau <address@hidden>
---
 qobject/qlit.c     | 53 +++++++++++++++++++----------------------------------
 tests/check-qlit.c |  3 +++
 2 files changed, 22 insertions(+), 34 deletions(-)

diff --git a/qobject/qlit.c b/qobject/qlit.c
index dc0015f76c..3c4882c784 100644
--- a/qobject/qlit.c
+++ b/qobject/qlit.c
@@ -18,29 +18,6 @@
 #include "qapi/qmp/qlit.h"
 #include "qapi/qmp/types.h"
 
-typedef struct QListCompareHelper {
-    int index;
-    QLitObject *objs;
-    bool result;
-} QListCompareHelper;
-
-static void compare_helper(QObject *obj, void *opaque)
-{
-    QListCompareHelper *helper = opaque;
-
-    if (!helper->result) {
-        return;
-    }
-
-    if (helper->objs[helper->index].type == QTYPE_NONE) {
-        helper->result = false;
-        return;
-    }
-
-    helper->result =
-        qlit_equal_qobject(&helper->objs[helper->index++], obj);
-}
-
 static bool qlit_equal_qdict(const QLitObject *lhs, const QDict *qdict)
 {
     int i;
@@ -62,6 +39,23 @@ static bool qlit_equal_qdict(const QLitObject *lhs, const 
QDict *qdict)
     return true;
 }
 
+static bool qlit_equal_qlist(const QLitObject *lhs, const QList *qlist)
+{
+    QListEntry *e;
+    int i = 0;
+
+    QLIST_FOREACH_ENTRY(qlist, e) {
+        QObject *obj = qlist_entry_obj(e);
+
+        if (!qlit_equal_qobject(&lhs->value.qlist[i], obj)) {
+            return false;
+        }
+        i++;
+    }
+
+    return !e && lhs->value.qlist[i].type == QTYPE_NONE;
+}
+
 bool qlit_equal_qobject(const QLitObject *lhs, const QObject *rhs)
 {
     if (!rhs || lhs->type != qobject_type(rhs)) {
@@ -78,17 +72,8 @@ bool qlit_equal_qobject(const QLitObject *lhs, const QObject 
*rhs)
                        qstring_get_str(qobject_to_qstring(rhs))) == 0);
     case QTYPE_QDICT:
         return qlit_equal_qdict(lhs, qobject_to_qdict(rhs));
-    case QTYPE_QLIST: {
-        QListCompareHelper helper;
-
-        helper.index = 0;
-        helper.objs = lhs->value.qlist;
-        helper.result = true;
-
-        qlist_iter(qobject_to_qlist(rhs), compare_helper, &helper);
-
-        return helper.result;
-    }
+    case QTYPE_QLIST:
+        return qlit_equal_qlist(lhs, qobject_to_qlist(rhs));
     case QTYPE_QNULL:
         return true;
     default:
diff --git a/tests/check-qlit.c b/tests/check-qlit.c
index 5d9558dfd9..ae74bfcb83 100644
--- a/tests/check-qlit.c
+++ b/tests/check-qlit.c
@@ -58,6 +58,9 @@ static void qlit_equal_qobject_test(void)
 
     g_assert(!qlit_equal_qobject(&qlit_foo, qobj));
 
+    qdict_put(qobject_to_qdict(qobj), "bee", qlist_new());
+    g_assert(!qlit_equal_qobject(&qlit, qobj));
+
     qobject_decref(qobj);
 }
 
-- 
2.14.1.146.gd35faa819