[Qemu-devel] [PATCH 16/17] RFC: qdict: add uint

["Marc-André Lureau" <marcandre.lureau@redhat.com>]

Similar to int support, add uint support.

Note this is RFC because this is currently unused in qemu, I haven't
found a good user for it yet (kaslr qemu-ga code did use it though).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 include/qapi/qmp/qdict.h |  5 +++++
 qobject/qdict.c          | 38 ++++++++++++++++++++++++++++++++++++++
 tests/check-qdict.c      | 32 ++++++++++++++++++++++++++++++++
 3 files changed, 75 insertions(+)

diff --git a/include/qapi/qmp/qdict.h b/include/qapi/qmp/qdict.h
index 363e431106..8c7c2b762b 100644
--- a/include/qapi/qmp/qdict.h
+++ b/include/qapi/qmp/qdict.h
@@ -56,6 +56,8 @@ void qdict_destroy_obj(QObject *obj);
 /* Helpers for int, bool, and string */
 #define qdict_put_int(qdict, key, value) \
         qdict_put(qdict, key, qnum_from_int(value))
+#define qdict_put_uint(qdict, key, value)        \
+        qdict_put(qdict, key, qnum_from_uint(value))
 #define qdict_put_bool(qdict, key, value) \
         qdict_put(qdict, key, qbool_from_bool(value))
 #define qdict_put_str(qdict, key, value) \
@@ -64,12 +66,15 @@ void qdict_destroy_obj(QObject *obj);
 /* High level helpers */
 double qdict_get_double(const QDict *qdict, const char *key);
 int64_t qdict_get_int(const QDict *qdict, const char *key);
+uint64_t qdict_get_uint(const QDict *qdict, const char *key);
 bool qdict_get_bool(const QDict *qdict, const char *key);
 QList *qdict_get_qlist(const QDict *qdict, const char *key);
 QDict *qdict_get_qdict(const QDict *qdict, const char *key);
 const char *qdict_get_str(const QDict *qdict, const char *key);
 int64_t qdict_get_try_int(const QDict *qdict, const char *key,
                           int64_t def_value);
+uint64_t qdict_get_try_uint(const QDict *qdict, const char *key,
+                            uint64_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);
 
diff --git a/qobject/qdict.c b/qobject/qdict.c
index ad5bab9572..34478fbdd4 100644
--- a/qobject/qdict.c
+++ b/qobject/qdict.c
@@ -202,6 +202,19 @@ int64_t qdict_get_int(const QDict *qdict, const char *key)
 }
 
 /**
+ * qdict_get_uint(): Get an unsigned integer mapped by 'key'
+ *
+ * This function assumes that 'key' exists and it stores a
+ * QNum int object.
+ *
+ * Return unsigned integer mapped by 'key'.
+ */
+uint64_t qdict_get_uint(const QDict *qdict, const char *key)
+{
+    return qnum_get_uint(qobject_to_qnum(qdict_get(qdict, key)), &error_abort);
+}
+
+/**
  * qdict_get_bool(): Get a bool mapped by 'key'
  *
  * This function assumes that 'key' exists and it stores a
@@ -270,6 +283,31 @@ int64_t qdict_get_try_int(const QDict *qdict, const char *key,
 }
 
 /**
+ * qdict_get_try_uint(): Try to get usigned integer mapped by 'key'
+ *
+ * Return unsigned integer mapped by 'key', if it is not present in
+ * the dictionary or if the stored object is not of QNum type
+ * 'def_value' will be returned.
+ */
+uint64_t qdict_get_try_uint(const QDict *qdict, const char *key,
+                            uint64_t def_value)
+{
+    Error *err = NULL;
+    QNum *qnum = qobject_to_qnum(qdict_get(qdict, key));
+    uint64_t val = def_value;
+
+    if (qnum) {
+        val = qnum_get_uint(qnum, &err);
+    }
+    if (err) {
+        error_free(err);
+        val = def_value;
+    }
+
+    return val;
+}
+
+/**
  * qdict_get_try_bool(): Try to get a bool mapped by 'key'
  *
  * Return bool mapped by 'key', if it is not present in the
diff --git a/tests/check-qdict.c b/tests/check-qdict.c
index bcd06a7d6b..7f9ea67862 100644
--- a/tests/check-qdict.c
+++ b/tests/check-qdict.c
@@ -105,6 +105,21 @@ static void qdict_get_int_test(void)
     QDECREF(tests_dict);
 }
 
+static void qdict_get_uint_test(void)
+{
+    uint64_t ret;
+    const uint64_t value = UINT64_MAX;
+    const char *key = "uint";
+    QDict *tests_dict = qdict_new();
+
+    qdict_put_uint(tests_dict, key, value);
+
+    ret = qdict_get_uint(tests_dict, key);
+    g_assert(ret == value);
+
+    QDECREF(tests_dict);
+}
+
 static void qdict_get_try_int_test(void)
 {
     int ret;
@@ -120,6 +135,21 @@ static void qdict_get_try_int_test(void)
     QDECREF(tests_dict);
 }
 
+static void qdict_get_try_uint_test(void)
+{
+    uint64_t ret;
+    const uint64_t value = UINT64_MAX;
+    const char *key = "uint";
+    QDict *tests_dict = qdict_new();
+
+    qdict_put_uint(tests_dict, key, value);
+
+    ret = qdict_get_try_uint(tests_dict, key, 0);
+    g_assert(ret == value);
+
+    QDECREF(tests_dict);
+}
+
 static void qdict_get_str_test(void)
 {
     const char *p;
@@ -852,7 +882,9 @@ int main(int argc, char **argv)
     /* Continue, but now with fixtures */
     g_test_add_func("/public/get", qdict_get_test);
     g_test_add_func("/public/get_int", qdict_get_int_test);
+    g_test_add_func("/public/get_uint", qdict_get_uint_test);
     g_test_add_func("/public/get_try_int", qdict_get_try_int_test);
+    g_test_add_func("/public/get_try_uint", qdict_get_try_uint_test);
     g_test_add_func("/public/get_str", qdict_get_str_test);
     g_test_add_func("/public/get_try_str", qdict_get_try_str_test);
     g_test_add_func("/public/defaults", qdict_defaults_test);
-- 
2.13.0.rc1.16.gd80b50c3f