--- /dev/null
+#ifndef BABELTRACE_VALUES_INTERNAL_H
+#define BABELTRACE_VALUES_INTERNAL_H
+
+/*
+ * Copyright (c) 2015-2018 Philippe Proulx <pproulx@efficios.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "lib/object.h"
+#include <babeltrace2/value.h>
+#include <babeltrace2/value-const.h>
+#include <babeltrace2/types.h>
+#include <glib.h>
+
+struct bt_value {
+ struct bt_object base;
+ enum bt_value_type type;
+ bt_bool frozen;
+};
+
+struct bt_value_bool {
+ struct bt_value base;
+ bt_bool value;
+};
+
+struct bt_value_integer {
+ struct bt_value base;
+ union {
+ uint64_t i;
+ int64_t u;
+ } value;
+};
+
+struct bt_value_real {
+ struct bt_value base;
+ double value;
+};
+
+struct bt_value_string {
+ struct bt_value base;
+ GString *gstr;
+};
+
+struct bt_value_array {
+ struct bt_value base;
+ GPtrArray *garray;
+};
+
+struct bt_value_map {
+ struct bt_value base;
+ GHashTable *ght;
+};
+
+BT_HIDDEN
+enum bt_value_status _bt_value_freeze(const struct bt_value *object);
+
+#ifdef BT_DEV_MODE
+# define bt_value_freeze _bt_value_freeze
+#else
+# define bt_value_freeze(_value)
+#endif /* BT_DEV_MODE */
+
+#endif /* BABELTRACE_VALUES_INTERNAL_H */