[Qemu-devel] [PATCH for-2.12 1/3] qapi: Add qdict_is_null()

[Max Reitz <mreitz@redhat.com>]

Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 include/qapi/qmp/qdict.h |  1 +
 qobject/qdict.c          | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/include/qapi/qmp/qdict.h b/include/qapi/qmp/qdict.h
index fc218e7be6..c65ebfc748 100644
--- a/include/qapi/qmp/qdict.h
+++ b/include/qapi/qmp/qdict.h
@@ -76,6 +76,7 @@ int64_t qdict_get_try_int(const QDict *qdict, const char *key,
                           int64_t def_value);
 bool qdict_get_try_bool(const QDict *qdict, const char *key, bool def_value);
 const char *qdict_get_try_str(const QDict *qdict, const char *key);
+bool qdict_is_qnull(const QDict *qdict, const char *key);
 
 void qdict_copy_default(QDict *dst, QDict *src, const char *key);
 void qdict_set_default_str(QDict *dst, const char *key, const char *val);
diff --git a/qobject/qdict.c b/qobject/qdict.c
index e8f15f1132..a032ea629a 100644
--- a/qobject/qdict.c
+++ b/qobject/qdict.c
@@ -294,6 +294,16 @@ const char *qdict_get_try_str(const QDict *qdict, const char *key)
 }
 
 /**
+ * qdict_is_qnull(): Return true if the value for 'key' is QNull
+ */
+bool qdict_is_qnull(const QDict *qdict, const char *key)
+{
+    QObject *value = qdict_get(qdict, key);
+
+    return value && value->type == QTYPE_QNULL;
+}
+
+/**
  * qdict_iter(): Iterate over all the dictionary's stored values.
  *
  * This function allows the user to provide an iterator, which will be
-- 
2.13.6