lib: add internal object pool API and use it; adapt plugins/tests
[babeltrace.git] / lib / ctf-ir / fields.c
index 95c19fd11a643c8031957f941164540a3e88f0f3..5c9ff0b667cd4ae7e482f0b983a042bf42134b19 100644 (file)
 #define BT_LOG_TAG "FIELDS"
 #include <babeltrace/lib-logging-internal.h>
 
+#include <babeltrace/assert-pre-internal.h>
 #include <babeltrace/ctf-ir/fields-internal.h>
 #include <babeltrace/ctf-ir/field-types-internal.h>
-#include <babeltrace/ctf-writer/serialize-internal.h>
 #include <babeltrace/object-internal.h>
 #include <babeltrace/ref.h>
 #include <babeltrace/compiler-internal.h>
 #include <babeltrace/compat/fcntl-internal.h>
 #include <babeltrace/align-internal.h>
+#include <babeltrace/assert-internal.h>
 #include <inttypes.h>
 
-static
-struct bt_ctf_field *bt_ctf_field_integer_create(struct bt_ctf_field_type *);
-static
-struct bt_ctf_field *bt_ctf_field_enumeration_create(
-               struct bt_ctf_field_type *);
-static
-struct bt_ctf_field *bt_ctf_field_floating_point_create(
-               struct bt_ctf_field_type *);
-static
-struct bt_ctf_field *bt_ctf_field_structure_create(
-               struct bt_ctf_field_type *);
-static
-struct bt_ctf_field *bt_ctf_field_variant_create(
-               struct bt_ctf_field_type *);
-static
-struct bt_ctf_field *bt_ctf_field_array_create(
-               struct bt_ctf_field_type *);
-static
-struct bt_ctf_field *bt_ctf_field_sequence_create(
-               struct bt_ctf_field_type *);
-static
-struct bt_ctf_field *bt_ctf_field_string_create(struct bt_ctf_field_type *);
+#define BT_ASSERT_PRE_FIELD_IS_INT_OR_ENUM(_field, _name)              \
+       BT_ASSERT_PRE((_field)->type->id == BT_FIELD_TYPE_ID_INTEGER || \
+               (_field)->type->id == BT_FIELD_TYPE_ID_ENUM,            \
+               _name " is not an integer or an enumeration field: "    \
+               "%!+f", (_field))
+
+static struct bt_field_common_methods bt_field_integer_methods = {
+       .set_is_frozen = bt_field_common_generic_set_is_frozen,
+       .validate = bt_field_common_generic_validate,
+       .copy = NULL,
+       .is_set = bt_field_common_generic_is_set,
+       .reset = bt_field_common_generic_reset,
+};
 
-static
-void bt_ctf_field_destroy(struct bt_object *);
-static
-void bt_ctf_field_integer_destroy(struct bt_ctf_field *);
-static
-void bt_ctf_field_enumeration_destroy(struct bt_ctf_field *);
-static
-void bt_ctf_field_floating_point_destroy(struct bt_ctf_field *);
-static
-void bt_ctf_field_structure_destroy(struct bt_ctf_field *);
-static
-void bt_ctf_field_variant_destroy(struct bt_ctf_field *);
-static
-void bt_ctf_field_array_destroy(struct bt_ctf_field *);
-static
-void bt_ctf_field_sequence_destroy(struct bt_ctf_field *);
-static
-void bt_ctf_field_string_destroy(struct bt_ctf_field *);
+static struct bt_field_common_methods bt_field_floating_point_methods = {
+       .set_is_frozen = bt_field_common_generic_set_is_frozen,
+       .validate = bt_field_common_generic_validate,
+       .copy = NULL,
+       .is_set = bt_field_common_generic_is_set,
+       .reset = bt_field_common_generic_reset,
+};
 
-static
-int bt_ctf_field_generic_validate(struct bt_ctf_field *);
-static
-int bt_ctf_field_structure_validate(struct bt_ctf_field *);
-static
-int bt_ctf_field_variant_validate(struct bt_ctf_field *);
-static
-int bt_ctf_field_enumeration_validate(struct bt_ctf_field *);
-static
-int bt_ctf_field_array_validate(struct bt_ctf_field *);
-static
-int bt_ctf_field_sequence_validate(struct bt_ctf_field *);
+static struct bt_field_common_methods bt_field_enumeration_methods = {
+       .set_is_frozen = bt_field_common_generic_set_is_frozen,
+       .validate = bt_field_common_generic_validate,
+       .copy = NULL,
+       .is_set = bt_field_common_generic_is_set,
+       .reset = bt_field_common_generic_reset,
+};
 
-static
-int bt_ctf_field_generic_reset(struct bt_ctf_field *);
-static
-int bt_ctf_field_structure_reset(struct bt_ctf_field *);
-static
-int bt_ctf_field_variant_reset(struct bt_ctf_field *);
-static
-int bt_ctf_field_enumeration_reset(struct bt_ctf_field *);
-static
-int bt_ctf_field_array_reset(struct bt_ctf_field *);
-static
-int bt_ctf_field_sequence_reset(struct bt_ctf_field *);
-static
-int bt_ctf_field_string_reset(struct bt_ctf_field *);
+static struct bt_field_common_methods bt_field_string_methods = {
+       .set_is_frozen = bt_field_common_generic_set_is_frozen,
+       .validate = bt_field_common_generic_validate,
+       .copy = NULL,
+       .is_set = bt_field_common_generic_is_set,
+       .reset = bt_field_common_string_reset,
+};
 
-static
-int bt_ctf_field_integer_serialize(struct bt_ctf_field *,
-               struct bt_ctf_stream_pos *, enum bt_ctf_byte_order);
-static
-int bt_ctf_field_enumeration_serialize(struct bt_ctf_field *,
-               struct bt_ctf_stream_pos *, enum bt_ctf_byte_order);
-static
-int bt_ctf_field_floating_point_serialize(struct bt_ctf_field *,
-               struct bt_ctf_stream_pos *, enum bt_ctf_byte_order);
-static
-int bt_ctf_field_structure_serialize(struct bt_ctf_field *,
-               struct bt_ctf_stream_pos *, enum bt_ctf_byte_order);
-static
-int bt_ctf_field_variant_serialize(struct bt_ctf_field *,
-               struct bt_ctf_stream_pos *, enum bt_ctf_byte_order);
-static
-int bt_ctf_field_array_serialize(struct bt_ctf_field *,
-               struct bt_ctf_stream_pos *, enum bt_ctf_byte_order);
-static
-int bt_ctf_field_sequence_serialize(struct bt_ctf_field *,
-               struct bt_ctf_stream_pos *, enum bt_ctf_byte_order);
-static
-int bt_ctf_field_string_serialize(struct bt_ctf_field *,
-               struct bt_ctf_stream_pos *, enum bt_ctf_byte_order);
+static struct bt_field_common_methods bt_field_structure_methods = {
+       .set_is_frozen = bt_field_common_structure_set_is_frozen_recursive,
+       .validate = bt_field_common_structure_validate_recursive,
+       .copy = NULL,
+       .is_set = bt_field_common_structure_is_set_recursive,
+       .reset = bt_field_common_structure_reset_recursive,
+};
 
-static
-int bt_ctf_field_integer_copy(struct bt_ctf_field *, struct bt_ctf_field *);
-static
-int bt_ctf_field_enumeration_copy(struct bt_ctf_field *, struct bt_ctf_field *);
-static
-int bt_ctf_field_floating_point_copy(struct bt_ctf_field *,
-               struct bt_ctf_field *);
-static
-int bt_ctf_field_structure_copy(struct bt_ctf_field *, struct bt_ctf_field *);
-static
-int bt_ctf_field_variant_copy(struct bt_ctf_field *, struct bt_ctf_field *);
-static
-int bt_ctf_field_array_copy(struct bt_ctf_field *, struct bt_ctf_field *);
-static
-int bt_ctf_field_sequence_copy(struct bt_ctf_field *, struct bt_ctf_field *);
-static
-int bt_ctf_field_string_copy(struct bt_ctf_field *, struct bt_ctf_field *);
+static struct bt_field_common_methods bt_field_sequence_methods = {
+       .set_is_frozen = bt_field_common_sequence_set_is_frozen_recursive,
+       .validate = bt_field_common_sequence_validate_recursive,
+       .copy = NULL,
+       .is_set = bt_field_common_sequence_is_set_recursive,
+       .reset = bt_field_common_sequence_reset_recursive,
+};
+
+static struct bt_field_common_methods bt_field_array_methods = {
+       .set_is_frozen = bt_field_common_array_set_is_frozen_recursive,
+       .validate = bt_field_common_array_validate_recursive,
+       .copy = NULL,
+       .is_set = bt_field_common_array_is_set_recursive,
+       .reset = bt_field_common_array_reset_recursive,
+};
+
+static struct bt_field_common_methods bt_field_variant_methods = {
+       .set_is_frozen = bt_field_common_variant_set_is_frozen_recursive,
+       .validate = bt_field_common_variant_validate_recursive,
+       .copy = NULL,
+       .is_set = bt_field_common_variant_is_set_recursive,
+       .reset = bt_field_common_variant_reset_recursive,
+};
 
 static
-void generic_field_freeze(struct bt_ctf_field *);
-static
-void bt_ctf_field_enumeration_freeze(struct bt_ctf_field *);
-static
-void bt_ctf_field_structure_freeze(struct bt_ctf_field *);
-static
-void bt_ctf_field_variant_freeze(struct bt_ctf_field *);
+struct bt_field *bt_field_integer_create(struct bt_field_type *);
+
 static
-void bt_ctf_field_array_freeze(struct bt_ctf_field *);
+struct bt_field *bt_field_enumeration_create(struct bt_field_type *);
+
 static
-void bt_ctf_field_sequence_freeze(struct bt_ctf_field *);
+struct bt_field *bt_field_floating_point_create(struct bt_field_type *);
 
 static
-bt_bool bt_ctf_field_generic_is_set(struct bt_ctf_field *);
+struct bt_field *bt_field_structure_create(struct bt_field_type *);
+
 static
-bt_bool bt_ctf_field_structure_is_set(struct bt_ctf_field *);
+struct bt_field *bt_field_variant_create(struct bt_field_type *);
+
 static
-bt_bool bt_ctf_field_variant_is_set(struct bt_ctf_field *);
+struct bt_field *bt_field_array_create(struct bt_field_type *);
+
 static
-bt_bool bt_ctf_field_enumeration_is_set(struct bt_ctf_field *);
+struct bt_field *bt_field_sequence_create(struct bt_field_type *);
+
 static
-bt_bool bt_ctf_field_array_is_set(struct bt_ctf_field *);
+struct bt_field *bt_field_string_create(struct bt_field_type *);
+
 static
-bt_bool bt_ctf_field_sequence_is_set(struct bt_ctf_field *);
+struct bt_field *(* const field_create_funcs[])(struct bt_field_type *) = {
+       [BT_FIELD_TYPE_ID_INTEGER] =    bt_field_integer_create,
+       [BT_FIELD_TYPE_ID_ENUM] =       bt_field_enumeration_create,
+       [BT_FIELD_TYPE_ID_FLOAT] =      bt_field_floating_point_create,
+       [BT_FIELD_TYPE_ID_STRUCT] =     bt_field_structure_create,
+       [BT_FIELD_TYPE_ID_VARIANT] =    bt_field_variant_create,
+       [BT_FIELD_TYPE_ID_ARRAY] =      bt_field_array_create,
+       [BT_FIELD_TYPE_ID_SEQUENCE] =   bt_field_sequence_create,
+       [BT_FIELD_TYPE_ID_STRING] =     bt_field_string_create,
+};
 
 static
-int increase_packet_size(struct bt_ctf_stream_pos *pos);
+void bt_field_integer_destroy(struct bt_field *field);
 
 static
-struct bt_ctf_field *(* const field_create_funcs[])(
-               struct bt_ctf_field_type *) = {
-       [BT_CTF_FIELD_TYPE_ID_INTEGER] = bt_ctf_field_integer_create,
-       [BT_CTF_FIELD_TYPE_ID_ENUM] = bt_ctf_field_enumeration_create,
-       [BT_CTF_FIELD_TYPE_ID_FLOAT] =
-               bt_ctf_field_floating_point_create,
-       [BT_CTF_FIELD_TYPE_ID_STRUCT] = bt_ctf_field_structure_create,
-       [BT_CTF_FIELD_TYPE_ID_VARIANT] = bt_ctf_field_variant_create,
-       [BT_CTF_FIELD_TYPE_ID_ARRAY] = bt_ctf_field_array_create,
-       [BT_CTF_FIELD_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_create,
-       [BT_CTF_FIELD_TYPE_ID_STRING] = bt_ctf_field_string_create,
-};
+void bt_field_enumeration_destroy(struct bt_field *field);
 
 static
-void (* const field_destroy_funcs[])(struct bt_ctf_field *) = {
-       [BT_CTF_FIELD_TYPE_ID_INTEGER] = bt_ctf_field_integer_destroy,
-       [BT_CTF_FIELD_TYPE_ID_ENUM] = bt_ctf_field_enumeration_destroy,
-       [BT_CTF_FIELD_TYPE_ID_FLOAT] =
-               bt_ctf_field_floating_point_destroy,
-       [BT_CTF_FIELD_TYPE_ID_STRUCT] = bt_ctf_field_structure_destroy,
-       [BT_CTF_FIELD_TYPE_ID_VARIANT] = bt_ctf_field_variant_destroy,
-       [BT_CTF_FIELD_TYPE_ID_ARRAY] = bt_ctf_field_array_destroy,
-       [BT_CTF_FIELD_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_destroy,
-       [BT_CTF_FIELD_TYPE_ID_STRING] = bt_ctf_field_string_destroy,
-};
+void bt_field_floating_point_destroy(struct bt_field *field);
 
 static
-int (* const field_validate_funcs[])(struct bt_ctf_field *) = {
-       [BT_CTF_FIELD_TYPE_ID_INTEGER] = bt_ctf_field_generic_validate,
-       [BT_CTF_FIELD_TYPE_ID_ENUM] = bt_ctf_field_enumeration_validate,
-       [BT_CTF_FIELD_TYPE_ID_FLOAT] = bt_ctf_field_generic_validate,
-       [BT_CTF_FIELD_TYPE_ID_STRUCT] = bt_ctf_field_structure_validate,
-       [BT_CTF_FIELD_TYPE_ID_VARIANT] = bt_ctf_field_variant_validate,
-       [BT_CTF_FIELD_TYPE_ID_ARRAY] = bt_ctf_field_array_validate,
-       [BT_CTF_FIELD_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_validate,
-       [BT_CTF_FIELD_TYPE_ID_STRING] = bt_ctf_field_generic_validate,
-};
+void bt_field_structure_destroy_recursive(struct bt_field *field);
 
 static
-int (* const field_reset_funcs[])(struct bt_ctf_field *) = {
-       [BT_CTF_FIELD_TYPE_ID_INTEGER] = bt_ctf_field_generic_reset,
-       [BT_CTF_FIELD_TYPE_ID_ENUM] = bt_ctf_field_enumeration_reset,
-       [BT_CTF_FIELD_TYPE_ID_FLOAT] = bt_ctf_field_generic_reset,
-       [BT_CTF_FIELD_TYPE_ID_STRUCT] = bt_ctf_field_structure_reset,
-       [BT_CTF_FIELD_TYPE_ID_VARIANT] = bt_ctf_field_variant_reset,
-       [BT_CTF_FIELD_TYPE_ID_ARRAY] = bt_ctf_field_array_reset,
-       [BT_CTF_FIELD_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_reset,
-       [BT_CTF_FIELD_TYPE_ID_STRING] = bt_ctf_field_string_reset,
-};
+void bt_field_variant_destroy_recursive(struct bt_field *field);
 
 static
-int (* const field_serialize_funcs[])(struct bt_ctf_field *,
-               struct bt_ctf_stream_pos *, enum bt_ctf_byte_order) = {
-       [BT_CTF_FIELD_TYPE_ID_INTEGER] = bt_ctf_field_integer_serialize,
-       [BT_CTF_FIELD_TYPE_ID_ENUM] = bt_ctf_field_enumeration_serialize,
-       [BT_CTF_FIELD_TYPE_ID_FLOAT] =
-               bt_ctf_field_floating_point_serialize,
-       [BT_CTF_FIELD_TYPE_ID_STRUCT] = bt_ctf_field_structure_serialize,
-       [BT_CTF_FIELD_TYPE_ID_VARIANT] = bt_ctf_field_variant_serialize,
-       [BT_CTF_FIELD_TYPE_ID_ARRAY] = bt_ctf_field_array_serialize,
-       [BT_CTF_FIELD_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_serialize,
-       [BT_CTF_FIELD_TYPE_ID_STRING] = bt_ctf_field_string_serialize,
-};
+void bt_field_array_destroy_recursive(struct bt_field *field);
 
 static
-int (* const field_copy_funcs[])(struct bt_ctf_field *,
-               struct bt_ctf_field *) = {
-       [BT_CTF_FIELD_TYPE_ID_INTEGER] = bt_ctf_field_integer_copy,
-       [BT_CTF_FIELD_TYPE_ID_ENUM] = bt_ctf_field_enumeration_copy,
-       [BT_CTF_FIELD_TYPE_ID_FLOAT] = bt_ctf_field_floating_point_copy,
-       [BT_CTF_FIELD_TYPE_ID_STRUCT] = bt_ctf_field_structure_copy,
-       [BT_CTF_FIELD_TYPE_ID_VARIANT] = bt_ctf_field_variant_copy,
-       [BT_CTF_FIELD_TYPE_ID_ARRAY] = bt_ctf_field_array_copy,
-       [BT_CTF_FIELD_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_copy,
-       [BT_CTF_FIELD_TYPE_ID_STRING] = bt_ctf_field_string_copy,
-};
+void bt_field_sequence_destroy_recursive(struct bt_field *field);
 
 static
-void (* const field_freeze_funcs[])(struct bt_ctf_field *) = {
-       [BT_CTF_FIELD_TYPE_ID_INTEGER] = generic_field_freeze,
-       [BT_CTF_FIELD_TYPE_ID_FLOAT] = generic_field_freeze,
-       [BT_CTF_FIELD_TYPE_ID_STRING] = generic_field_freeze,
-       [BT_CTF_FIELD_TYPE_ID_ENUM] = bt_ctf_field_enumeration_freeze,
-       [BT_CTF_FIELD_TYPE_ID_STRUCT] = bt_ctf_field_structure_freeze,
-       [BT_CTF_FIELD_TYPE_ID_VARIANT] = bt_ctf_field_variant_freeze,
-       [BT_CTF_FIELD_TYPE_ID_ARRAY] = bt_ctf_field_array_freeze,
-       [BT_CTF_FIELD_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_freeze,
-};
+void bt_field_string_destroy(struct bt_field *field);
 
 static
-bt_bool (* const field_is_set_funcs[])(struct bt_ctf_field *) = {
-       [BT_CTF_FIELD_TYPE_ID_INTEGER] = bt_ctf_field_generic_is_set,
-       [BT_CTF_FIELD_TYPE_ID_ENUM] = bt_ctf_field_enumeration_is_set,
-       [BT_CTF_FIELD_TYPE_ID_FLOAT] = bt_ctf_field_generic_is_set,
-       [BT_CTF_FIELD_TYPE_ID_STRUCT] = bt_ctf_field_structure_is_set,
-       [BT_CTF_FIELD_TYPE_ID_VARIANT] = bt_ctf_field_variant_is_set,
-       [BT_CTF_FIELD_TYPE_ID_ARRAY] = bt_ctf_field_array_is_set,
-       [BT_CTF_FIELD_TYPE_ID_SEQUENCE] = bt_ctf_field_sequence_is_set,
-       [BT_CTF_FIELD_TYPE_ID_STRING] = bt_ctf_field_generic_is_set,
+void (* const field_destroy_funcs[])(struct bt_field *) = {
+       [BT_FIELD_TYPE_ID_INTEGER] =    bt_field_integer_destroy,
+       [BT_FIELD_TYPE_ID_ENUM] =       bt_field_enumeration_destroy,
+       [BT_FIELD_TYPE_ID_FLOAT] =      bt_field_floating_point_destroy,
+       [BT_FIELD_TYPE_ID_STRUCT] =     bt_field_structure_destroy_recursive,
+       [BT_FIELD_TYPE_ID_VARIANT] =    bt_field_variant_destroy_recursive,
+       [BT_FIELD_TYPE_ID_ARRAY] =      bt_field_array_destroy_recursive,
+       [BT_FIELD_TYPE_ID_SEQUENCE] =   bt_field_sequence_destroy_recursive,
+       [BT_FIELD_TYPE_ID_STRING] =     bt_field_string_destroy,
 };
 
-struct bt_ctf_field *bt_ctf_field_create(struct bt_ctf_field_type *type)
+BT_HIDDEN
+struct bt_field *bt_field_create_recursive(struct bt_field_type *type)
 {
-       struct bt_ctf_field *field = NULL;
-       enum bt_ctf_field_type_id type_id;
-       int ret;
-
-       if (!type) {
-               BT_LOGW_STR("Invalid parameter: field type is NULL.");
-               goto error;
-       }
-
-       type_id = bt_ctf_field_type_get_type_id(type);
-       if (type_id <= BT_CTF_FIELD_TYPE_ID_UNKNOWN ||
-                       type_id >= BT_CTF_NR_TYPE_IDS) {
-               BT_LOGW("Invalid parameter: unknown field type ID: "
-                       "ft-addr=%p, ft-id=%d", type, type_id);
-               goto error;
-       }
-
-       /* Field class MUST be valid */
-       ret = bt_ctf_field_type_validate(type);
-       if (ret) {
-               /* Invalid */
-               BT_LOGW("Invalid parameter: field type is invalid: "
-                       "ft-addr=%p", type);
-               goto error;
-       }
+       struct bt_field *field = NULL;
+       enum bt_field_type_id type_id;
 
+       BT_ASSERT_PRE_NON_NULL(type, "Field type");
+       BT_ASSERT(field_type_common_has_known_id((void *) type));
+       BT_ASSERT_PRE(bt_field_type_common_validate((void *) type) == 0,
+               "Field type is invalid: %!+F", type);
+       type_id = bt_field_type_get_type_id(type);
        field = field_create_funcs[type_id](type);
        if (!field) {
-               goto error;
+               goto end;
        }
 
-       /* The type's declaration can't change after this point */
-       bt_ctf_field_type_freeze(type);
-       bt_get(type);
-       bt_object_init(field, bt_ctf_field_destroy);
-       field->type = type;
-error:
+       bt_object_set_is_shared((void *) field, false);
+       bt_field_type_freeze(type);
+
+end:
        return field;
 }
 
-/* Pre-2.0 CTF writer backward compatibility */
-void bt_ctf_field_get(struct bt_ctf_field *field)
+struct bt_field_type *bt_field_borrow_type(struct bt_field *field)
 {
-       bt_get(field);
+       return (void *) bt_field_common_borrow_type((void *) field);
 }
 
-/* Pre-2.0 CTF writer backward compatibility */
-void bt_ctf_field_put(struct bt_ctf_field *field)
+enum bt_field_type_id bt_field_get_type_id(struct bt_field *field)
 {
-       bt_put(field);
+       struct bt_field_common *field_common = (void *) field;
+
+       BT_ASSERT_PRE_NON_NULL(field, "Field");
+       return field_common->type->id;
 }
 
-struct bt_ctf_field_type *bt_ctf_field_get_type(struct bt_ctf_field *field)
+bt_bool bt_field_is_integer(struct bt_field *field)
 {
-       struct bt_ctf_field_type *ret = NULL;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto end;
-       }
-
-       ret = field->type;
-       bt_get(ret);
-end:
-       return ret;
+       return bt_field_get_type_id(field) == BT_FIELD_TYPE_ID_INTEGER;
 }
 
-enum bt_ctf_field_type_id bt_ctf_field_get_type_id(struct bt_ctf_field *field)
+bt_bool bt_field_is_floating_point(struct bt_field *field)
 {
-       enum bt_ctf_field_type_id ret = BT_CTF_FIELD_TYPE_ID_UNKNOWN;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto end;
-       }
-
-       ret = bt_ctf_field_type_get_type_id(field->type);
-end:
-       return ret;
+       return bt_field_get_type_id(field) == BT_FIELD_TYPE_ID_FLOAT;
 }
 
-bt_bool bt_ctf_field_is_integer(struct bt_ctf_field *field)
+bt_bool bt_field_is_enumeration(struct bt_field *field)
 {
-       return bt_ctf_field_get_type_id(field) == BT_CTF_FIELD_TYPE_ID_INTEGER;
+       return bt_field_get_type_id(field) == BT_FIELD_TYPE_ID_ENUM;
 }
 
-bt_bool bt_ctf_field_is_floating_point(struct bt_ctf_field *field)
+bt_bool bt_field_is_string(struct bt_field *field)
 {
-       return bt_ctf_field_get_type_id(field) == BT_CTF_FIELD_TYPE_ID_FLOAT;
+       return bt_field_get_type_id(field) == BT_FIELD_TYPE_ID_STRING;
 }
 
-bt_bool bt_ctf_field_is_enumeration(struct bt_ctf_field *field)
+bt_bool bt_field_is_structure(struct bt_field *field)
 {
-       return bt_ctf_field_get_type_id(field) == BT_CTF_FIELD_TYPE_ID_ENUM;
+       return bt_field_get_type_id(field) == BT_FIELD_TYPE_ID_STRUCT;
 }
 
-bt_bool bt_ctf_field_is_string(struct bt_ctf_field *field)
+bt_bool bt_field_is_array(struct bt_field *field)
 {
-       return bt_ctf_field_get_type_id(field) == BT_CTF_FIELD_TYPE_ID_STRING;
+       return bt_field_get_type_id(field) == BT_FIELD_TYPE_ID_ARRAY;
 }
 
-bt_bool bt_ctf_field_is_structure(struct bt_ctf_field *field)
+bt_bool bt_field_is_sequence(struct bt_field *field)
 {
-       return bt_ctf_field_get_type_id(field) == BT_CTF_FIELD_TYPE_ID_STRUCT;
+       return bt_field_get_type_id(field) == BT_FIELD_TYPE_ID_SEQUENCE;
 }
 
-bt_bool bt_ctf_field_is_array(struct bt_ctf_field *field)
+bt_bool bt_field_is_variant(struct bt_field *field)
 {
-       return bt_ctf_field_get_type_id(field) == BT_CTF_FIELD_TYPE_ID_ARRAY;
+       return bt_field_get_type_id(field) == BT_FIELD_TYPE_ID_VARIANT;
 }
 
-bt_bool bt_ctf_field_is_sequence(struct bt_ctf_field *field)
+int64_t bt_field_sequence_get_length(struct bt_field *field)
 {
-       return bt_ctf_field_get_type_id(field) == BT_CTF_FIELD_TYPE_ID_SEQUENCE;
+       return bt_field_common_sequence_get_length((void *) field);
 }
 
-bt_bool bt_ctf_field_is_variant(struct bt_ctf_field *field)
+int bt_field_sequence_set_length(struct bt_field *field, uint64_t length)
 {
-       return bt_ctf_field_get_type_id(field) == BT_CTF_FIELD_TYPE_ID_VARIANT;
+       return bt_field_common_sequence_set_length((void *) field,
+               length, (bt_field_common_create_func) bt_field_create_recursive);
 }
 
-struct bt_ctf_field *bt_ctf_field_sequence_get_length(
-               struct bt_ctf_field *field)
+struct bt_field *bt_field_structure_borrow_field_by_index(
+               struct bt_field *field, uint64_t index)
 {
-       struct bt_ctf_field *ret = NULL;
-       struct bt_ctf_field_sequence *sequence;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_SEQUENCE) {
-               BT_LOGW("Invalid parameter: field's type is not a sequence field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               goto end;
-       }
-
-       sequence = container_of(field, struct bt_ctf_field_sequence, parent);
-       ret = sequence->length;
-       bt_get(ret);
-end:
-       return ret;
+       return (void *) bt_field_common_structure_borrow_field_by_index(
+               (void *) field, index);
 }
 
-int bt_ctf_field_sequence_set_length(struct bt_ctf_field *field,
-               struct bt_ctf_field *length_field)
+struct bt_field *bt_field_structure_borrow_field_by_name(
+               struct bt_field *field, const char *name)
 {
-       int ret = 0;
-       struct bt_ctf_field_type_integer *length_type;
-       struct bt_ctf_field_integer *length;
-       struct bt_ctf_field_sequence *sequence;
-       uint64_t sequence_length;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (!length_field) {
-               BT_LOGW_STR("Invalid parameter: length field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (field->frozen) {
-               BT_LOGW("Invalid parameter: field is frozen: addr=%p",
-                       field);
-               ret = -1;
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(length_field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_INTEGER) {
-               BT_LOGW("Invalid parameter: length field's type is not an integer field type: "
-                       "field-addr=%p, length-field-addr=%p, length-ft-addr=%p, length-ft-id=%s",
-                       field, length_field, length_field->type,
-                       bt_ctf_field_type_id_string(length_field->type->id));
-               ret = -1;
-               goto end;
-       }
-
-       length_type = container_of(length_field->type,
-               struct bt_ctf_field_type_integer, parent);
-       /* The length field must be unsigned */
-       if (length_type->is_signed) {
-               BT_LOGW("Invalid parameter: length field's type is signed: "
-                       "field-addr=%p, length-field-addr=%p, "
-                       "length-field-ft-addr=%p", field, length_field,
-                       length_field->type);
-               ret = -1;
-               goto end;
-       }
+       return (void *) bt_field_common_structure_borrow_field_by_name(
+               (void *) field, name);
+}
 
-       length = container_of(length_field, struct bt_ctf_field_integer,
-               parent);
-       sequence_length = length->payload.unsignd;
-       sequence = container_of(field, struct bt_ctf_field_sequence, parent);
-       if (sequence->elements) {
-               g_ptr_array_free(sequence->elements, TRUE);
-               bt_put(sequence->length);
-       }
+struct bt_field *bt_field_array_borrow_field(
+               struct bt_field *field, uint64_t index)
+{
+       return (void *) bt_field_common_array_borrow_field((void *) field,
+               index);
+}
 
-       sequence->elements = g_ptr_array_sized_new((size_t)sequence_length);
-       if (!sequence->elements) {
-               BT_LOGE_STR("Failed to allocate a GPtrArray.");
-               ret = -1;
-               goto end;
-       }
+struct bt_field *bt_field_sequence_borrow_field(
+               struct bt_field *field, uint64_t index)
+{
+       return (void *) bt_field_common_sequence_borrow_field((void *) field,
+               index);
+}
 
-       g_ptr_array_set_free_func(sequence->elements,
-               (GDestroyNotify) bt_put);
-       g_ptr_array_set_size(sequence->elements, (size_t) sequence_length);
-       bt_get(length_field);
-       sequence->length = length_field;
-end:
-       return ret;
+struct bt_field *bt_field_variant_borrow_current_field(
+               struct bt_field *variant_field)
+{
+       return (void *) bt_field_common_variant_borrow_current_field(
+               (void *) variant_field);
 }
 
-struct bt_ctf_field *bt_ctf_field_structure_get_field_by_name(
-               struct bt_ctf_field *field, const char *name)
+int bt_field_variant_set_tag_signed(struct bt_field *variant_field,
+               int64_t tag)
 {
-       struct bt_ctf_field *ret = NULL;
-       GQuark field_quark;
-       struct bt_ctf_field_structure *structure;
-       size_t index;
-       GHashTable *field_name_to_index;
+       return bt_field_variant_common_set_tag((void *) variant_field,
+               (uint64_t) tag, true);
+}
 
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto error;
-       }
+int bt_field_variant_set_tag_unsigned(struct bt_field *variant_field,
+               uint64_t tag)
+{
+       return bt_field_variant_common_set_tag((void *) variant_field,
+               (uint64_t) tag, false);
+}
 
-       if (!name) {
-               BT_LOGW_STR("Invalid parameter: field name is NULL.");
-               goto error;
-       }
+int bt_field_variant_get_tag_signed(struct bt_field *variant_field,
+               int64_t *tag)
+{
+       return bt_field_common_variant_get_tag_signed((void *) variant_field, tag);
+}
 
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_STRUCT) {
-               BT_LOGW("Invalid parameter: field's type is not a structure field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               goto error;
-       }
+int bt_field_variant_get_tag_unsigned(struct bt_field *variant_field,
+               uint64_t *tag)
+{
+       return bt_field_common_variant_get_tag_unsigned((void *) variant_field, tag);
+}
 
-       field_name_to_index =
-               container_of(field->type, struct bt_ctf_field_type_structure,
-                       parent)->field_name_to_index;
-       field_quark = g_quark_from_string(name);
-       structure = container_of(field, struct bt_ctf_field_structure, parent);
-       if (!g_hash_table_lookup_extended(field_name_to_index,
-                       GUINT_TO_POINTER(field_quark),
-                       NULL, (gpointer *)&index)) {
-               BT_LOGV("Invalid parameter: no such field in structure field's type: "
-                       "struct-field-addr=%p, struct-ft-addr=%p, name=\"%s\"",
-                       field, field->type, name);
-               goto error;
-       }
+struct bt_field_type_enumeration_mapping_iterator *
+bt_field_enumeration_get_mappings(struct bt_field *field)
+{
+       struct bt_field_enumeration *enum_field = (void *) field;
 
-       ret = bt_get(structure->fields->pdata[index]);
-       assert(ret);
-error:
-       return ret;
+       BT_ASSERT_PRE_NON_NULL(field, "Enumeration field");
+       BT_ASSERT_PRE_FIELD_COMMON_HAS_TYPE_ID((struct bt_field_common *) field,
+               BT_FIELD_TYPE_ID_ENUM, "Field");
+       BT_ASSERT_PRE_FIELD_COMMON_IS_SET((struct bt_field_common *) field,
+               "Enumeration field");
+       return bt_field_common_enumeration_get_mappings((void *) field,
+               (bt_field_common_create_func) bt_field_create_recursive,
+               enum_field->common.payload.unsignd);
 }
 
-struct bt_ctf_field *bt_ctf_field_structure_get_field_by_index(
-               struct bt_ctf_field *field, uint64_t index)
+BT_ASSERT_PRE_FUNC
+static inline
+struct bt_field_type_common_integer *get_int_enum_int_ft(
+               struct bt_field *field)
 {
-       struct bt_ctf_field_structure *structure;
-       struct bt_ctf_field *ret = NULL;
+       struct bt_field_common_integer *int_field = (void *) field;
+       struct bt_field_type_common_integer *int_ft = NULL;
 
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto end;
+       if (int_field->common.type->id == BT_FIELD_TYPE_ID_INTEGER) {
+               int_ft = BT_FROM_COMMON(int_field->common.type);
+       } else if (int_field->common.type->id == BT_FIELD_TYPE_ID_ENUM) {
+               struct bt_field_type_common_enumeration *enum_ft =
+                       BT_FROM_COMMON(int_field->common.type);
+               int_ft = enum_ft->container_ft;
        }
 
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_STRUCT) {
-               BT_LOGW("Invalid parameter: field's type is not a structure field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               goto end;
-       }
+       BT_ASSERT(int_ft);
+       return int_ft;
+}
 
-       structure = container_of(field, struct bt_ctf_field_structure, parent);
-       if (index >= structure->fields->len) {
-               BT_LOGW("Invalid parameter: index is out of bounds: "
-                       "addr=%p, index=%" PRIu64 ", count=%u",
-                       field, index, structure->fields->len);
-               goto end;
-       }
+int bt_field_integer_signed_get_value(struct bt_field *field, int64_t *value)
+{
+       struct bt_field_common_integer *integer = (void *) field;
 
-       ret = bt_get(structure->fields->pdata[index]);
-end:
-       return ret;
+       BT_ASSERT_PRE_NON_NULL(field, "Integer/enumeration field");
+       BT_ASSERT_PRE_NON_NULL(value, "Value");
+       BT_ASSERT_PRE_FIELD_COMMON_IS_SET(BT_TO_COMMON(integer),
+               "Integer/enumeration field");
+       BT_ASSERT_PRE_FIELD_IS_INT_OR_ENUM(BT_TO_COMMON(integer), "Field");
+       BT_ASSERT_PRE(bt_field_type_common_integer_is_signed(
+               BT_TO_COMMON(get_int_enum_int_ft(field))),
+               "Field's type is unsigned: %!+f", field);
+       *value = integer->payload.signd;
+       return 0;
 }
 
-int bt_ctf_field_structure_set_field_by_name(struct bt_ctf_field *field,
-               const char *name, struct bt_ctf_field *value)
+int bt_field_integer_signed_set_value(struct bt_field *field, int64_t value)
 {
        int ret = 0;
-       GQuark field_quark;
-       struct bt_ctf_field_structure *structure;
-       struct bt_ctf_field_type *expected_field_type = NULL;
-       size_t index;
-       GHashTable *field_name_to_index;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: structure field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (!name) {
-               BT_LOGW_STR("Invalid parameter: field name is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (!value) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_STRUCT) {
-               BT_LOGW("Invalid parameter: field's type is not a structure field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               ret = -1;
-               goto end;
-       }
-
-       field_quark = g_quark_from_string(name);
-       structure = container_of(field, struct bt_ctf_field_structure, parent);
-       expected_field_type =
-               bt_ctf_field_type_structure_get_field_type_by_name(field->type,
-               name);
-
-       if (bt_ctf_field_type_compare(expected_field_type, value->type)) {
-               BT_LOGW("Invalid parameter: field type of field to set is different from the expected field type: "
-                       "struct-field-addr=%p, field-addr=%p, "
-                       "field-ft-addr=%p, expected-ft-addr=%p",
-                       field, value, value->type, expected_field_type);
-               ret = -1;
-               goto end;
-       }
-
-       field_name_to_index =
-               container_of(field->type, struct bt_ctf_field_type_structure,
-                       parent)->field_name_to_index;
-       if (!g_hash_table_lookup_extended(field_name_to_index,
-                       GUINT_TO_POINTER(field_quark), NULL,
-                       (gpointer *) &index)) {
-               BT_LOGV("Invalid parameter: no such field in structure field's type: "
-                       "struct-field-addr=%p, struct-ft-addr=%p, "
-                       "field-ft-addr=%p, name=\"%s\"",
-                       field, field->type, value->type, name);
-               ret = -1;
-               goto end;
-       }
-       bt_get(value);
-       BT_MOVE(structure->fields->pdata[index], value);
-end:
-       if (expected_field_type) {
-               bt_put(expected_field_type);
-       }
+       struct bt_field_common_integer *integer = (void *) field;
+
+       BT_ASSERT_PRE_NON_NULL(field, "Integer field");
+       BT_ASSERT_PRE_FIELD_COMMON_HOT(BT_TO_COMMON(integer), "Integer field");
+       BT_ASSERT_PRE_FIELD_IS_INT_OR_ENUM(BT_TO_COMMON(integer), "Field");
+       BT_ASSERT_PRE(bt_field_type_common_integer_is_signed(
+               BT_FROM_COMMON(get_int_enum_int_ft(field))),
+               "Field's type is unsigned: %!+f", field);
+       BT_ASSERT_PRE(value_is_in_range_signed(
+               get_int_enum_int_ft(field)->size, value),
+               "Value is out of bounds: value=%" PRId64 ", %![field-]+f",
+               value, field);
+       integer->payload.signd = value;
+       bt_field_set(field, true);
        return ret;
 }
 
-struct bt_ctf_field *bt_ctf_field_array_get_field(struct bt_ctf_field *field,
-               uint64_t index)
+int bt_field_integer_unsigned_get_value(struct bt_field *field, uint64_t *value)
 {
-       struct bt_ctf_field *new_field = NULL;
-       struct bt_ctf_field_type *field_type = NULL;
-       struct bt_ctf_field_array *array;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto end;
-       }
+       struct bt_field_common_integer *integer = (void *) field;
 
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_ARRAY) {
-               BT_LOGW("Invalid parameter: field's type is not an array field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               goto end;
-       }
+       BT_ASSERT_PRE_NON_NULL(field, "Integer field");
+       BT_ASSERT_PRE_NON_NULL(value, "Value");
+       BT_ASSERT_PRE_FIELD_COMMON_IS_SET(BT_TO_COMMON(integer), "Integer field");
+       BT_ASSERT_PRE_FIELD_IS_INT_OR_ENUM(BT_TO_COMMON(integer), "Field");
+       BT_ASSERT_PRE(!bt_field_type_common_integer_is_signed(
+               BT_FROM_COMMON(get_int_enum_int_ft(field))),
+               "Field's type is signed: %!+f", field);
+       *value = integer->payload.unsignd;
+       return 0;
+}
 
-       array = container_of(field, struct bt_ctf_field_array, parent);
-       if (index >= array->elements->len) {
-               BT_LOGW("Invalid parameter: index is out of bounds: "
-                       "addr=%p, index=%" PRIu64 ", count=%u",
-                       field, index, array->elements->len);
-               goto end;
-       }
+int bt_field_integer_unsigned_set_value(struct bt_field *field,
+               uint64_t value)
+{
+       struct bt_field_common_integer *integer = (void *) field;
+
+       BT_ASSERT_PRE_NON_NULL(field, "Integer field");
+       BT_ASSERT_PRE_FIELD_COMMON_HOT(BT_TO_COMMON(integer), "Integer field");
+       BT_ASSERT_PRE_FIELD_IS_INT_OR_ENUM(BT_TO_COMMON(integer), "Field");
+       BT_ASSERT_PRE(!bt_field_type_common_integer_is_signed(
+               BT_FROM_COMMON(get_int_enum_int_ft(field))),
+               "Field's type is signed: %!+f", field);
+       BT_ASSERT_PRE(value_is_in_range_unsigned(
+               get_int_enum_int_ft(field)->size, value),
+               "Value is out of bounds: value=%" PRIu64 ", %![field-]+f",
+               value, field);
+       integer->payload.unsignd = value;
+       bt_field_set(field, true);
+       return 0;
+}
 
-       field_type = bt_ctf_field_type_array_get_element_type(field->type);
-       if (array->elements->pdata[(size_t)index]) {
-               new_field = array->elements->pdata[(size_t)index];
-               goto end;
-       }
+int bt_field_floating_point_get_value(struct bt_field *field,
+               double *value)
+{
+       return bt_field_common_floating_point_get_value((void *) field, value);
+}
 
-       /* We don't want to modify this field if it's frozen */
-       if (field->frozen) {
-               /*
-                * Not logging a warning here because the user could
-                * legitimately check if a array field is set with
-                * this function: if the preconditions are satisfied,
-                * a NULL return value means this.
-                */
-               BT_LOGV("Not creating a field because array field is frozen: "
-                       "array-field-addr=%p, index=%" PRIu64, field, index);
-               goto end;
-       }
+int bt_field_floating_point_set_value(struct bt_field *field,
+               double value)
+{
+       return bt_field_common_floating_point_set_value((void *) field, value);
+}
 
-       new_field = bt_ctf_field_create(field_type);
-       array->elements->pdata[(size_t)index] = new_field;
-end:
-       if (field_type) {
-               bt_put(field_type);
-       }
-       if (new_field) {
-               bt_get(new_field);
-       }
-       return new_field;
+const char *bt_field_string_get_value(struct bt_field *field)
+{
+       return bt_field_common_string_get_value((void *) field);
 }
 
-struct bt_ctf_field *bt_ctf_field_sequence_get_field(struct bt_ctf_field *field,
-               uint64_t index)
+int bt_field_string_set_value(struct bt_field *field, const char *value)
 {
-       struct bt_ctf_field *new_field = NULL;
-       struct bt_ctf_field_type *field_type = NULL;
-       struct bt_ctf_field_sequence *sequence;
+       return bt_field_common_string_set_value((void *) field, value);
+}
 
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto end;
-       }
+int bt_field_string_append(struct bt_field *field, const char *value)
+{
+       return bt_field_common_string_append((void *) field, value);
+}
 
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_SEQUENCE) {
-               BT_LOGW("Invalid parameter: field's type is not a sequence field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               goto end;
-       }
+int bt_field_string_append_len(struct bt_field *field,
+               const char *value, unsigned int length)
+{
+       return bt_field_common_string_append_len((void *) field, value, length);
+}
 
-       sequence = container_of(field, struct bt_ctf_field_sequence, parent);
-       if (!sequence->elements) {
-               BT_LOGV("Sequence field's elements do not exist: addr=%p",
-                       field);
-               goto end;
-       }
+int bt_field_string_clear(struct bt_field *string_field)
+{
+       return bt_field_common_string_clear((void *) string_field);
+}
 
-       if (index >= sequence->elements->len) {
-               BT_LOGW("Invalid parameter: index is out of bounds: "
-                       "addr=%p, index=%" PRIu64 ", count=%u",
-                       field, index, sequence->elements->len);
-               goto end;
-       }
+BT_HIDDEN
+struct bt_field_common *bt_field_common_copy(struct bt_field_common *field)
+{
+       struct bt_field_common *copy = NULL;
 
-       field_type = bt_ctf_field_type_sequence_get_element_type(field->type);
-       if (sequence->elements->pdata[(size_t) index]) {
-               new_field = sequence->elements->pdata[(size_t) index];
+       BT_ASSERT_PRE_NON_NULL(field, "Field");
+       BT_ASSERT(field_type_common_has_known_id(field->type));
+       BT_ASSERT(field->methods->copy);
+       copy = field->methods->copy(field);
+       if (!copy) {
+               BT_LOGW("Cannot create field: ft-addr=%p", field->type);
                goto end;
        }
 
-       /* We don't want to modify this field if it's frozen */
-       if (field->frozen) {
-               /*
-                * Not logging a warning here because the user could
-                * legitimately check if a sequence field is set with
-                * this function: if the preconditions are satisfied,
-                * a NULL return value means this.
-                */
-               BT_LOGV("Not creating a field because sequence field is frozen: "
-                       "sequence-field-addr=%p, index=%" PRIu64, field, index);
-               goto end;
-       }
-
-       new_field = bt_ctf_field_create(field_type);
-       sequence->elements->pdata[(size_t) index] = new_field;
-end:
-       if (field_type) {
-               bt_put(field_type);
-       }
-       if (new_field) {
-               bt_get(new_field);
-       }
-       return new_field;
-}
-
-struct bt_ctf_field *bt_ctf_field_variant_get_field(struct bt_ctf_field *field,
-               struct bt_ctf_field *tag_field)
-{
-       struct bt_ctf_field *new_field = NULL;
-       struct bt_ctf_field_variant *variant;
-       struct bt_ctf_field_type_variant *variant_type;
-       struct bt_ctf_field_type *field_type;
-       struct bt_ctf_field *tag_enum = NULL;
-       struct bt_ctf_field_integer *tag_enum_integer;
-       int64_t tag_enum_value;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto end;
-       }
-
-       if (!tag_field) {
-               BT_LOGW_STR("Invalid parameter: tag field is NULL.");
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_VARIANT) {
-               BT_LOGW("Invalid parameter: field's type is not a variant field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(tag_field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_ENUM) {
-               BT_LOGW("Invalid parameter: tag field's type is not an enumeration field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", tag_field,
-                       tag_field->type,
-                       bt_ctf_field_type_id_string(tag_field->type->id));
-               goto end;
-       }
-
-       variant = container_of(field, struct bt_ctf_field_variant, parent);
-       variant_type = container_of(field->type,
-               struct bt_ctf_field_type_variant, parent);
-       tag_enum = bt_ctf_field_enumeration_get_container(tag_field);
-       if (!tag_enum) {
-               goto end;
-       }
-
-       tag_enum_integer = container_of(tag_enum, struct bt_ctf_field_integer,
-               parent);
-
-       if (bt_ctf_field_validate(tag_field) < 0) {
-               BT_LOGW("Invalid parameter: tag field is invalid: "
-                       "variant-field-addr=%p, tag-field-addr=%p",
-                       field, tag_field);
-               goto end;
-       }
-
-       tag_enum_value = tag_enum_integer->payload.signd;
-
-       /*
-        * If the variant currently has a tag and a payload, and if the
-        * requested tag value is the same as the current one, return
-        * the current payload instead of creating a fresh one.
-        */
-       if (variant->tag && variant->payload) {
-               struct bt_ctf_field *cur_tag_container = NULL;
-               struct bt_ctf_field_integer *cur_tag_enum_integer;
-               int64_t cur_tag_value;
-
-               cur_tag_container =
-                       bt_ctf_field_enumeration_get_container(variant->tag);
-               assert(cur_tag_container);
-               cur_tag_enum_integer = container_of(cur_tag_container,
-                       struct bt_ctf_field_integer, parent);
-               bt_put(cur_tag_container);
-               cur_tag_value = cur_tag_enum_integer->payload.signd;
-
-               if (cur_tag_value == tag_enum_value) {
-                       new_field = variant->payload;
-                       bt_get(new_field);
-                       goto end;
-               }
-       }
-
-       /* We don't want to modify this field if it's frozen */
-       if (field->frozen) {
-               /*
-                * Not logging a warning here because the user could
-                * legitimately check if a variant field is set with
-                * this function: if the preconditions are satisfied,
-                * a NULL return value means this.
-                */
-               BT_LOGV("Not creating a field because variant field is frozen: "
-                       "variant-field-addr=%p, tag-field-addr=%p",
-                       field, tag_field);
-               goto end;
-       }
-
-       field_type = bt_ctf_field_type_variant_get_field_type_signed(
-               variant_type, tag_enum_value);
-       if (!field_type) {
-               BT_LOGW("Cannot get variant field type's field: "
-                       "variant-field-addr=%p, variant-ft-addr=%p, "
-                       "tag-value-signed=%" PRId64,
-                       field, variant_type, tag_enum_value);
-               goto end;
-       }
-
-       new_field = bt_ctf_field_create(field_type);
-       if (!new_field) {
-               BT_LOGW("Cannot create field: "
-                       "variant-field-addr=%p, variant-ft-addr=%p, "
-                       "field-ft-addr=%p", field, field->type, field_type);
-               goto end;
-       }
-
-       bt_put(variant->tag);
-       bt_put(variant->payload);
-       bt_get(new_field);
-       bt_get(tag_field);
-       variant->tag = tag_field;
-       variant->payload = new_field;
-end:
-       bt_put(tag_enum);
-       return new_field;
-}
-
-struct bt_ctf_field *bt_ctf_field_variant_get_current_field(
-               struct bt_ctf_field *variant_field)
-{
-       struct bt_ctf_field *current_field = NULL;
-       struct bt_ctf_field_variant *variant;
-
-       if (!variant_field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(variant_field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_VARIANT) {
-               BT_LOGW("Invalid parameter: field's type is not a variant field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", variant_field,
-                       variant_field->type,
-                       bt_ctf_field_type_id_string(variant_field->type->id));
-               goto end;
-       }
-
-       variant = container_of(variant_field, struct bt_ctf_field_variant,
-               parent);
-
-       if (variant->payload) {
-               current_field = variant->payload;
-               bt_get(current_field);
-               goto end;
-       }
-
-end:
-       return current_field;
-}
-
-struct bt_ctf_field *bt_ctf_field_variant_get_tag(
-               struct bt_ctf_field *variant_field)
-{
-       struct bt_ctf_field *tag = NULL;
-       struct bt_ctf_field_variant *variant;
-
-       if (!variant_field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(variant_field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_VARIANT) {
-               BT_LOGW("Invalid parameter: field's type is not a variant field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", variant_field,
-                       variant_field->type,
-                       bt_ctf_field_type_id_string(variant_field->type->id));
-               goto end;
-       }
-
-       variant = container_of(variant_field, struct bt_ctf_field_variant,
-                       parent);
-       if (variant->tag) {
-               tag = bt_get(variant->tag);
-       }
-end:
-       return tag;
-}
-
-struct bt_ctf_field *bt_ctf_field_enumeration_get_container(
-       struct bt_ctf_field *field)
-{
-       struct bt_ctf_field *container = NULL;
-       struct bt_ctf_field_enumeration *enumeration;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_ENUM) {
-               BT_LOGW("Invalid parameter: field's type is not an enumeration field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               goto end;
-       }
-
-       enumeration = container_of(field, struct bt_ctf_field_enumeration,
-               parent);
-       if (!enumeration->payload) {
-               /* We don't want to modify this field if it's frozen */
-               if (field->frozen) {
-                       /*
-                        * Not logging a warning here because the user
-                        * could legitimately check if an enumeration's
-                        * container field is set with this function: if
-                        * the preconditions are satisfied, a NULL
-                        * return value means this.
-                        */
-                       BT_LOGV("Not creating a field because enumeration field is frozen: "
-                               "enum-field-addr=%p", field);
-                       goto end;
-               }
-
-               struct bt_ctf_field_type_enumeration *enumeration_type =
-                       container_of(field->type,
-                       struct bt_ctf_field_type_enumeration, parent);
-               enumeration->payload =
-                       bt_ctf_field_create(enumeration_type->container);
-       }
-
-       container = enumeration->payload;
-       bt_get(container);
-end:
-       return container;
-}
-
-struct bt_ctf_field_type_enumeration_mapping_iterator *
-bt_ctf_field_enumeration_get_mappings(struct bt_ctf_field *field)
-{
-       int ret;
-       struct bt_ctf_field *container = NULL;
-       struct bt_ctf_field_type *container_type = NULL;
-       struct bt_ctf_field_type_integer *integer_type = NULL;
-       struct bt_ctf_field_type_enumeration_mapping_iterator *iter = NULL;
-
-       container = bt_ctf_field_enumeration_get_container(field);
-       if (!container) {
-               BT_LOGW("Invalid parameter: enumeration field has no container field: "
-                       "addr=%p", field);
-               goto end;
-       }
-
-       container_type = bt_ctf_field_get_type(container);
-       assert(container_type);
-       integer_type = container_of(container_type,
-               struct bt_ctf_field_type_integer, parent);
-
-       if (!integer_type->is_signed) {
-               uint64_t value;
-
-               ret = bt_ctf_field_unsigned_integer_get_value(container,
-                     &value);
-               if (ret) {
-                       BT_LOGW("Cannot get value from signed enumeration field's payload field: "
-                               "enum-field-addr=%p, payload-field-addr=%p",
-                               field, container);
-                       goto error_put_container_type;
-               }
-               iter = bt_ctf_field_type_enumeration_find_mappings_by_unsigned_value(
-                               field->type, value);
-       } else {
-               int64_t value;
-
-               ret = bt_ctf_field_signed_integer_get_value(container,
-                     &value);
-               if (ret) {
-                       BT_LOGW("Cannot get value from unsigned enumeration field's payload field: "
-                               "enum-field-addr=%p, payload-field-addr=%p",
-                               field, container);
-                       goto error_put_container_type;
-               }
-               iter = bt_ctf_field_type_enumeration_find_mappings_by_signed_value(
-                               field->type, value);
-       }
-
-error_put_container_type:
-       bt_put(container_type);
-       bt_put(container);
-end:
-       return iter;
-}
-
-int bt_ctf_field_signed_integer_get_value(struct bt_ctf_field *field,
-               int64_t *value)
-{
-       int ret = 0;
-       struct bt_ctf_field_integer *integer;
-       struct bt_ctf_field_type_integer *integer_type;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (!value) {
-               BT_LOGW_STR("Invalid parameter: value is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (!field->payload_set) {
-               BT_LOGV("Field's payload is not set: addr=%p", field);
-               ret = -1;
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_INTEGER) {
-               BT_LOGW("Invalid parameter: field's type is not an integer field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               ret = -1;
-               goto end;
-       }
-
-       integer_type = container_of(field->type,
-               struct bt_ctf_field_type_integer, parent);
-       if (!integer_type->is_signed) {
-               BT_LOGW("Invalid parameter: integer field's type is not signed: "
-                       "field-addr=%p, ft-addr=%p", field, field->type);
-               ret = -1;
-               goto end;
-       }
-
-       integer = container_of(field,
-               struct bt_ctf_field_integer, parent);
-       *value = integer->payload.signd;
-end:
-       return ret;
-}
-
-int bt_ctf_field_signed_integer_set_value(struct bt_ctf_field *field,
-               int64_t value)
-{
-       int ret = 0;
-       struct bt_ctf_field_integer *integer;
-       struct bt_ctf_field_type_integer *integer_type;
-       unsigned int size;
-       int64_t min_value, max_value;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (field->frozen) {
-               BT_LOGW("Invalid parameter: field is frozen: addr=%p",
-                       field);
-               ret = -1;
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_INTEGER) {
-               BT_LOGW("Invalid parameter: field's type is not an integer field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               ret = -1;
-               goto end;
-       }
-
-       integer = container_of(field, struct bt_ctf_field_integer, parent);
-       integer_type = container_of(field->type,
-               struct bt_ctf_field_type_integer, parent);
-       if (!integer_type->is_signed) {
-               BT_LOGW("Invalid parameter: integer field's type is not signed: "
-                       "field-addr=%p, ft-addr=%p", field, field->type);
-               ret = -1;
-               goto end;
-       }
-
-       size = integer_type->size;
-       min_value = -(1ULL << (size - 1));
-       max_value = (1ULL << (size - 1)) - 1;
-       if (value < min_value || value > max_value) {
-               BT_LOGW("Invalid parameter: value is out of bounds: "
-                       "addr=%p, value=%" PRId64 ", "
-                       "min-value=%" PRId64 ", max-value=%" PRId64,
-                       field, value, min_value, max_value);
-               ret = -1;
-               goto end;
-       }
-
-       integer->payload.signd = value;
-       integer->parent.payload_set = true;
-end:
-       return ret;
-}
-
-int bt_ctf_field_unsigned_integer_get_value(struct bt_ctf_field *field,
-               uint64_t *value)
-{
-       int ret = 0;
-       struct bt_ctf_field_integer *integer;
-       struct bt_ctf_field_type_integer *integer_type;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (!value) {
-               BT_LOGW_STR("Invalid parameter: value is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (!field->payload_set) {
-               BT_LOGV("Field's payload is not set: addr=%p", field);
-               ret = -1;
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_INTEGER) {
-               BT_LOGW("Invalid parameter: field's type is not an integer field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               ret = -1;
-               goto end;
-       }
-
-       integer_type = container_of(field->type,
-               struct bt_ctf_field_type_integer, parent);
-       if (integer_type->is_signed) {
-               BT_LOGW("Invalid parameter: integer field's type is signed: "
-                       "field-addr=%p, ft-addr=%p", field, field->type);
-               ret = -1;
-               goto end;
-       }
-
-       integer = container_of(field,
-               struct bt_ctf_field_integer, parent);
-       *value = integer->payload.unsignd;
-end:
-       return ret;
-}
-
-int bt_ctf_field_unsigned_integer_set_value(struct bt_ctf_field *field,
-               uint64_t value)
-{
-       int ret = 0;
-       struct bt_ctf_field_integer *integer;
-       struct bt_ctf_field_type_integer *integer_type;
-       unsigned int size;
-       uint64_t max_value;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (field->frozen) {
-               BT_LOGW("Invalid parameter: field is frozen: addr=%p",
-                       field);
-               ret = -1;
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_INTEGER) {
-               BT_LOGW("Invalid parameter: field's type is not an integer field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               ret = -1;
-               goto end;
-       }
-
-       integer = container_of(field, struct bt_ctf_field_integer, parent);
-       integer_type = container_of(field->type,
-               struct bt_ctf_field_type_integer, parent);
-       if (integer_type->is_signed) {
-               BT_LOGW("Invalid parameter: integer field's type is signed: "
-                       "field-addr=%p, ft-addr=%p", field, field->type);
-               ret = -1;
-               goto end;
-       }
-
-       size = integer_type->size;
-       max_value = (size == 64) ? UINT64_MAX : ((uint64_t) 1 << size) - 1;
-       if (value > max_value) {
-               BT_LOGW("Invalid parameter: value is out of bounds: "
-                       "addr=%p, value=%" PRIu64 ", "
-                       "min-value=%" PRIu64 ", max-value=%" PRIu64,
-                       field, value, (uint64_t) 0, max_value);
-               ret = -1;
-               goto end;
-       }
-
-       integer->payload.unsignd = value;
-       integer->parent.payload_set = true;
-end:
-       return ret;
-}
-
-int bt_ctf_field_floating_point_get_value(struct bt_ctf_field *field,
-               double *value)
-{
-       int ret = 0;
-       struct bt_ctf_field_floating_point *floating_point;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (!value) {
-               BT_LOGW_STR("Invalid parameter: value is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (!field->payload_set) {
-               BT_LOGV("Field's payload is not set: addr=%p", field);
-               ret = -1;
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_FLOAT) {
-               BT_LOGW("Invalid parameter: field's type is not a floating point number field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               ret = -1;
-               goto end;
-       }
-
-       floating_point = container_of(field,
-               struct bt_ctf_field_floating_point, parent);
-       *value = floating_point->payload;
-end:
-       return ret;
-}
-
-int bt_ctf_field_floating_point_set_value(struct bt_ctf_field *field,
-               double value)
-{
-       int ret = 0;
-       struct bt_ctf_field_floating_point *floating_point;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (field->frozen) {
-               BT_LOGW("Invalid parameter: field is frozen: addr=%p",
-                       field);
-               ret = -1;
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_FLOAT) {
-               BT_LOGW("Invalid parameter: field's type is not a floating point number field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               ret = -1;
-               goto end;
-       }
-
-       floating_point = container_of(field, struct bt_ctf_field_floating_point,
-               parent);
-       floating_point->payload = value;
-       floating_point->parent.payload_set = true;
-end:
-       return ret;
-}
-
-const char *bt_ctf_field_string_get_value(struct bt_ctf_field *field)
-{
-       const char *ret = NULL;
-       struct bt_ctf_field_string *string;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto end;
-       }
-
-       if (!field->payload_set) {
-               BT_LOGV("Field's payload is not set: addr=%p", field);
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_STRING) {
-               BT_LOGW("Invalid parameter: field's type is not a string field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               goto end;
-       }
-
-       string = container_of(field,
-               struct bt_ctf_field_string, parent);
-       ret = string->payload->str;
-end:
-       return ret;
-}
-
-int bt_ctf_field_string_set_value(struct bt_ctf_field *field,
-               const char *value)
-{
-       int ret = 0;
-       struct bt_ctf_field_string *string;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (!value) {
-               BT_LOGW_STR("Invalid parameter: value is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (field->frozen) {
-               BT_LOGW("Invalid parameter: field is frozen: addr=%p",
-                       field);
-               ret = -1;
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_STRING) {
-               BT_LOGW("Invalid parameter: field's type is not a string field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               ret = -1;
-               goto end;
-       }
-
-       string = container_of(field, struct bt_ctf_field_string, parent);
-       if (string->payload) {
-               g_string_assign(string->payload, value);
-       } else {
-               string->payload = g_string_new(value);
-       }
-
-       string->parent.payload_set = true;
-end:
-       return ret;
-}
-
-int bt_ctf_field_string_append(struct bt_ctf_field *field,
-               const char *value)
-{
-       int ret = 0;
-       struct bt_ctf_field_string *string_field;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (!value) {
-               BT_LOGW_STR("Invalid parameter: value is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (field->frozen) {
-               BT_LOGW("Invalid parameter: field is frozen: addr=%p",
-                       field);
-               ret = -1;
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_STRING) {
-               BT_LOGW("Invalid parameter: field's type is not a string field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               ret = -1;
-               goto end;
-       }
-
-       string_field = container_of(field, struct bt_ctf_field_string, parent);
-
-       if (string_field->payload) {
-               g_string_append(string_field->payload, value);
-       } else {
-               string_field->payload = g_string_new(value);
-       }
-
-       string_field->parent.payload_set = true;
-
-end:
-       return ret;
-}
-
-int bt_ctf_field_string_append_len(struct bt_ctf_field *field,
-               const char *value, unsigned int length)
-{
-       int i;
-       int ret = 0;
-       unsigned int effective_length = length;
-       struct bt_ctf_field_string *string_field;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (!value) {
-               BT_LOGW_STR("Invalid parameter: value is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       if (field->frozen) {
-               BT_LOGW("Invalid parameter: field is frozen: addr=%p",
-                       field);
-               ret = -1;
-               goto end;
-       }
-
-       if (bt_ctf_field_type_get_type_id(field->type) !=
-                       BT_CTF_FIELD_TYPE_ID_STRING) {
-               BT_LOGW("Invalid parameter: field's type is not a string field type: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%s", field,
-                       field->type,
-                       bt_ctf_field_type_id_string(field->type->id));
-               ret = -1;
-               goto end;
-       }
-
-       string_field = container_of(field, struct bt_ctf_field_string, parent);
-
-       /* make sure no null bytes are appended */
-       for (i = 0; i < length; ++i) {
-               if (value[i] == '\0') {
-                       effective_length = i;
-                       break;
-               }
-       }
-
-       if (string_field->payload) {
-               g_string_append_len(string_field->payload, value,
-                       effective_length);
-       } else {
-               string_field->payload = g_string_new_len(value,
-                       effective_length);
-       }
-
-       string_field->parent.payload_set = true;
-
-end:
-       return ret;
-}
-
-BT_HIDDEN
-int bt_ctf_field_validate(struct bt_ctf_field *field)
-{
-       int ret = 0;
-       enum bt_ctf_field_type_id type_id;
-
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       type_id = bt_ctf_field_type_get_type_id(field->type);
-       if (type_id <= BT_CTF_FIELD_TYPE_ID_UNKNOWN || type_id >= BT_CTF_NR_TYPE_IDS) {
-               BT_LOGW("Invalid parameter: unknown field type ID: "
-                       "addr=%p, ft-addr=%p, ft-id=%d",
-                       field, field->type, type_id);
-               ret = -1;
-               goto end;
-       }
-
-       ret = field_validate_funcs[type_id](field);
-end:
-       return ret;
-}
-
-BT_HIDDEN
-int bt_ctf_field_reset(struct bt_ctf_field *field)
-{
-       int ret = 0;
-       enum bt_ctf_field_type_id type_id;
-
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       type_id = bt_ctf_field_type_get_type_id(field->type);
-       if (type_id <= BT_CTF_FIELD_TYPE_ID_UNKNOWN || type_id >= BT_CTF_NR_TYPE_IDS) {
-               BT_LOGW("Invalid parameter: unknown field type ID: "
-                       "addr=%p, ft-addr=%p, ft-id=%d",
-                       field, field->type, type_id);
-               ret = -1;
-               goto end;
-       }
-
-       ret = field_reset_funcs[type_id](field);
-end:
-       return ret;
-}
-
-BT_HIDDEN
-int bt_ctf_field_serialize(struct bt_ctf_field *field,
-               struct bt_ctf_stream_pos *pos,
-               enum bt_ctf_byte_order native_byte_order)
-{
-       int ret = 0;
-       enum bt_ctf_field_type_id type_id;
-
-       assert(pos);
-
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       type_id = bt_ctf_field_type_get_type_id(field->type);
-       if (type_id <= BT_CTF_FIELD_TYPE_ID_UNKNOWN || type_id >= BT_CTF_NR_TYPE_IDS) {
-               BT_LOGW("Invalid parameter: unknown field type ID: "
-                       "addr=%p, ft-addr=%p, ft-id=%d",
-                       field, field->type, type_id);
-               ret = -1;
-               goto end;
-       }
-
-       ret = field_serialize_funcs[type_id](field, pos, native_byte_order);
-end:
-       return ret;
-}
-
-
-BT_HIDDEN
-bt_bool bt_ctf_field_is_set(struct bt_ctf_field *field)
-{
-       bt_bool is_set = BT_FALSE;
-       enum bt_ctf_field_type_id type_id;
-
-       if (!field) {
-               goto end;
-       }
-
-       type_id = bt_ctf_field_type_get_type_id(field->type);
-       if (type_id <= BT_CTF_FIELD_TYPE_ID_UNKNOWN || type_id >= BT_CTF_NR_TYPE_IDS) {
-               BT_LOGW("Invalid parameter: unknown field type ID: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%d",
-                       field, field->type, type_id);
-               goto end;
-       }
-
-       is_set = field_is_set_funcs[type_id](field);
-end:
-       return is_set;
-}
-
-struct bt_ctf_field *bt_ctf_field_copy(struct bt_ctf_field *field)
-{
-       int ret;
-       struct bt_ctf_field *copy = NULL;
-       enum bt_ctf_field_type_id type_id;
-
-       if (!field) {
-               BT_LOGW_STR("Invalid parameter: field is NULL.");
-               goto end;
-       }
-
-       type_id = bt_ctf_field_type_get_type_id(field->type);
-       if (type_id <= BT_CTF_FIELD_TYPE_ID_UNKNOWN || type_id >= BT_CTF_NR_TYPE_IDS) {
-               BT_LOGW("Invalid parameter: unknown field type ID: "
-                       "field-addr=%p, ft-addr=%p, ft-id=%d",
-                       field, field->type, type_id);
-               goto end;
-       }
-
-       copy = bt_ctf_field_create(field->type);
-       if (!copy) {
-               BT_LOGW("Cannot create field: ft-addr=%p", field->type);
-               goto end;
-       }
-
-       copy->payload_set = field->payload_set;
-       ret = field_copy_funcs[type_id](field, copy);
-       if (ret) {
-               bt_put(copy);
-               copy = NULL;
-       }
-end:
-       return copy;
-}
-
-static
-struct bt_ctf_field *bt_ctf_field_integer_create(struct bt_ctf_field_type *type)
-{
-       struct bt_ctf_field_integer *integer = g_new0(
-               struct bt_ctf_field_integer, 1);
-
-       BT_LOGD("Creating integer field object: ft-addr=%p", type);
-
-       if (integer) {
-               BT_LOGD("Created integer field object: addr=%p, ft-addr=%p",
-                       &integer->parent, type);
-       } else {
-               BT_LOGE_STR("Failed to allocate one integer field.");
-       }
-
-       return integer ? &integer->parent : NULL;
-}
-
-static
-struct bt_ctf_field *bt_ctf_field_enumeration_create(
-       struct bt_ctf_field_type *type)
-{
-       struct bt_ctf_field_enumeration *enumeration = g_new0(
-               struct bt_ctf_field_enumeration, 1);
-
-       BT_LOGD("Creating enumeration field object: ft-addr=%p", type);
-
-       if (enumeration) {
-               BT_LOGD("Created enumeration field object: addr=%p, ft-addr=%p",
-                       &enumeration->parent, type);
-       } else {
-               BT_LOGE_STR("Failed to allocate one enumeration field.");
-       }
-
-       return enumeration ? &enumeration->parent : NULL;
-}
-
-static
-struct bt_ctf_field *bt_ctf_field_floating_point_create(
-       struct bt_ctf_field_type *type)
-{
-       struct bt_ctf_field_floating_point *floating_point;
-
-       BT_LOGD("Creating floating point number field object: ft-addr=%p", type);
-       floating_point = g_new0(struct bt_ctf_field_floating_point, 1);
-
-       if (floating_point) {
-               BT_LOGD("Created floating point number field object: addr=%p, ft-addr=%p",
-                       &floating_point->parent, type);
-       } else {
-               BT_LOGE_STR("Failed to allocate one floating point number field.");
-       }
-
-       return floating_point ? &floating_point->parent : NULL;
-}
-
-static
-struct bt_ctf_field *bt_ctf_field_structure_create(
-       struct bt_ctf_field_type *type)
-{
-       struct bt_ctf_field_type_structure *structure_type = container_of(type,
-               struct bt_ctf_field_type_structure, parent);
-       struct bt_ctf_field_structure *structure = g_new0(
-               struct bt_ctf_field_structure, 1);
-       struct bt_ctf_field *ret = NULL;
-       size_t i;
-
-       BT_LOGD("Creating structure field object: ft-addr=%p", type);
-
-       if (!structure) {
-               BT_LOGE_STR("Failed to allocate one structure field.");
-               goto end;
-       }
-
-       structure->fields = g_ptr_array_new_with_free_func(
-               (GDestroyNotify) bt_ctf_field_put);
-       g_ptr_array_set_size(structure->fields,
-               structure_type->fields->len);
-
-       /* Create all fields contained by the structure field. */
-       for (i = 0; i < structure_type->fields->len; i++) {
-               struct bt_ctf_field *field;
-               struct structure_field *field_type =
-                       g_ptr_array_index(structure_type->fields, i);
-
-               field = bt_ctf_field_create(field_type->type);
-               if (!field) {
-                       BT_LOGE("Failed to create structure field's member: name=\"%s\", index=%zu",
-                               g_quark_to_string(field_type->name), i);
-                       bt_ctf_field_structure_destroy(&structure->parent);
-                       goto end;
-               }
-
-               g_ptr_array_index(structure->fields, i) = field;
-       }
-
-       ret = &structure->parent;
-       BT_LOGD("Created structure field object: addr=%p, ft-addr=%p", ret,
-               type);
-end:
-       return ret;
-}
-
-static
-struct bt_ctf_field *bt_ctf_field_variant_create(struct bt_ctf_field_type *type)
-{
-       struct bt_ctf_field_variant *variant = g_new0(
-               struct bt_ctf_field_variant, 1);
-
-       BT_LOGD("Creating variant field object: ft-addr=%p", type);
-
-       if (variant) {
-               BT_LOGD("Created variant field object: addr=%p, ft-addr=%p",
-                       &variant->parent, type);
-       } else {
-               BT_LOGE_STR("Failed to allocate one variant field.");
-       }
-
-       return variant ? &variant->parent : NULL;
-}
-
-static
-struct bt_ctf_field *bt_ctf_field_array_create(struct bt_ctf_field_type *type)
-{
-       struct bt_ctf_field_array *array = g_new0(struct bt_ctf_field_array, 1);
-       struct bt_ctf_field_type_array *array_type;
-       unsigned int array_length;
-
-       BT_LOGD("Creating array field object: ft-addr=%p", type);
-       assert(type);
-
-       if (!array) {
-               BT_LOGE_STR("Failed to allocate one array field.");
-               goto error;
-       }
-
-       array_type = container_of(type, struct bt_ctf_field_type_array, parent);
-       array_length = array_type->length;
-       array->elements = g_ptr_array_sized_new(array_length);
-       if (!array->elements) {
-               goto error;
-       }
-
-       g_ptr_array_set_free_func(array->elements,
-               (GDestroyNotify)bt_ctf_field_put);
-       g_ptr_array_set_size(array->elements, array_length);
-       BT_LOGD("Created array field object: addr=%p, ft-addr=%p",
-               &array->parent, type);
-       return &array->parent;
-error:
-       g_free(array);
-       return NULL;
-}
-
-static
-struct bt_ctf_field *bt_ctf_field_sequence_create(
-       struct bt_ctf_field_type *type)
-{
-       struct bt_ctf_field_sequence *sequence = g_new0(
-               struct bt_ctf_field_sequence, 1);
-
-       BT_LOGD("Creating sequence field object: ft-addr=%p", type);
-
-       if (sequence) {
-               BT_LOGD("Created sequence field object: addr=%p, ft-addr=%p",
-                       &sequence->parent, type);
-       } else {
-               BT_LOGE_STR("Failed to allocate one sequence field.");
-       }
-
-       return sequence ? &sequence->parent : NULL;
-}
-
-static
-struct bt_ctf_field *bt_ctf_field_string_create(struct bt_ctf_field_type *type)
-{
-       struct bt_ctf_field_string *string = g_new0(
-               struct bt_ctf_field_string, 1);
-
-       BT_LOGD("Creating string field object: ft-addr=%p", type);
-
-       if (string) {
-               BT_LOGD("Created string field object: addr=%p, ft-addr=%p",
-                       &string->parent, type);
-       } else {
-               BT_LOGE_STR("Failed to allocate one string field.");
-       }
-
-       return string ? &string->parent : NULL;
-}
-
-static
-void bt_ctf_field_destroy(struct bt_object *obj)
-{
-       struct bt_ctf_field *field;
-       struct bt_ctf_field_type *type;
-       enum bt_ctf_field_type_id type_id;
+       bt_field_common_set(copy, field->payload_set);
 
-       field = container_of(obj, struct bt_ctf_field, base);
-       type = field->type;
-       type_id = bt_ctf_field_type_get_type_id(type);
-       assert(type_id > BT_CTF_FIELD_TYPE_ID_UNKNOWN &&
-               type_id < BT_CTF_NR_TYPE_IDS);
-       field_destroy_funcs[type_id](field);
-       BT_LOGD_STR("Putting field's type.");
-       bt_put(type);
+end:
+       return copy;
 }
 
 static
-void bt_ctf_field_integer_destroy(struct bt_ctf_field *field)
+void bt_field_integer_destroy(struct bt_field *field)
 {
-       struct bt_ctf_field_integer *integer;
-
-       if (!field) {
-               return;
-       }
-
        BT_LOGD("Destroying integer field object: addr=%p", field);
-       integer = container_of(field, struct bt_ctf_field_integer, parent);
-       g_free(integer);
+       bt_field_common_integer_finalize((void *) field);
+       g_free(field);
 }
 
 static
-void bt_ctf_field_enumeration_destroy(struct bt_ctf_field *field)
+void bt_field_floating_point_destroy(struct bt_field *field)
 {
-       struct bt_ctf_field_enumeration *enumeration;
-
-       if (!field) {
-               return;
-       }
-
-       BT_LOGD("Destroying enumeration field object: addr=%p", field);
-       enumeration = container_of(field, struct bt_ctf_field_enumeration,
-               parent);
-       BT_LOGD_STR("Putting payload field.");
-       bt_put(enumeration->payload);
-       g_free(enumeration);
+       BT_LOGD("Destroying floating point field object: addr=%p", field);
+       bt_field_common_floating_point_finalize((void *) field);
+       g_free(field);
 }
 
 static
-void bt_ctf_field_floating_point_destroy(struct bt_ctf_field *field)
+void bt_field_enumeration_destroy(struct bt_field *field)
 {
-       struct bt_ctf_field_floating_point *floating_point;
-
-       if (!field) {
-               return;
-       }
-
-       BT_LOGD("Destroying floating point number field object: addr=%p", field);
-       floating_point = container_of(field, struct bt_ctf_field_floating_point,
-               parent);
-       g_free(floating_point);
+       BT_LOGD("Destroying enumeration field object: addr=%p", field);
+       bt_field_common_finalize((void *) field);
+       g_free(field);
 }
 
 static
-void bt_ctf_field_structure_destroy(struct bt_ctf_field *field)
+void bt_field_structure_destroy_recursive(struct bt_field *field)
 {
-       struct bt_ctf_field_structure *structure;
-
-       if (!field) {
-               return;
-       }
-
        BT_LOGD("Destroying structure field object: addr=%p", field);
-       structure = container_of(field, struct bt_ctf_field_structure, parent);
-       g_ptr_array_free(structure->fields, TRUE);
-       g_free(structure);
+       bt_field_common_structure_finalize_recursive((void *) field);
+       g_free(field);
 }
 
 static
-void bt_ctf_field_variant_destroy(struct bt_ctf_field *field)
+void bt_field_variant_destroy_recursive(struct bt_field *field)
 {
-       struct bt_ctf_field_variant *variant;
-
-       if (!field) {
-               return;
-       }
-
        BT_LOGD("Destroying variant field object: addr=%p", field);
-       variant = container_of(field, struct bt_ctf_field_variant, parent);
-       BT_LOGD_STR("Putting tag field.");
-       bt_put(variant->tag);
-       BT_LOGD_STR("Putting payload field.");
-       bt_put(variant->payload);
-       g_free(variant);
+       bt_field_common_variant_finalize_recursive((void *) field);
+       g_free(field);
 }
 
 static
-void bt_ctf_field_array_destroy(struct bt_ctf_field *field)
+void bt_field_array_destroy_recursive(struct bt_field *field)
 {
-       struct bt_ctf_field_array *array;
-
-       if (!field) {
-               return;
-       }
-
        BT_LOGD("Destroying array field object: addr=%p", field);
-       array = container_of(field, struct bt_ctf_field_array, parent);
-       g_ptr_array_free(array->elements, TRUE);
-       g_free(array);
+       bt_field_common_array_finalize_recursive((void *) field);
+       g_free(field);
 }
 
 static
-void bt_ctf_field_sequence_destroy(struct bt_ctf_field *field)
+void bt_field_sequence_destroy_recursive(struct bt_field *field)
 {
-       struct bt_ctf_field_sequence *sequence;
-
-       if (!field) {
-               return;
-       }
-
        BT_LOGD("Destroying sequence field object: addr=%p", field);
-       sequence = container_of(field, struct bt_ctf_field_sequence, parent);
-       if (sequence->elements) {
-               g_ptr_array_free(sequence->elements, TRUE);
-       }
-       BT_LOGD_STR("Putting length field.");
-       bt_put(sequence->length);
-       g_free(sequence);
+       bt_field_common_sequence_finalize_recursive((void *) field);
+       g_free(field);
 }
 
 static
-void bt_ctf_field_string_destroy(struct bt_ctf_field *field)
+void bt_field_string_destroy(struct bt_field *field)
 {
-       struct bt_ctf_field_string *string;
-
-       if (!field) {
-               return;
-       }
-
        BT_LOGD("Destroying string field object: addr=%p", field);
-       string = container_of(field, struct bt_ctf_field_string, parent);
-       if (string->payload) {
-               g_string_free(string->payload, TRUE);
-       }
-       g_free(string);
-}
-
-static
-int bt_ctf_field_generic_validate(struct bt_ctf_field *field)
-{
-       return (field && field->payload_set) ? 0 : -1;
+       bt_field_common_string_finalize((void *) field);
+       g_free(field);
 }
 
-static
-int bt_ctf_field_enumeration_validate(struct bt_ctf_field *field)
+BT_HIDDEN
+void bt_field_destroy_recursive(struct bt_field *field)
 {
-       int ret;
-       struct bt_ctf_field_enumeration *enumeration;
+       struct bt_field_common *field_common = (void *) field;
 
        if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
-
-       enumeration = container_of(field, struct bt_ctf_field_enumeration,
-               parent);
-       if (!enumeration->payload) {
-               BT_LOGW("Invalid enumeration field: payload is not set: "
-                       "addr=%p", field);
-               ret = -1;
-               goto end;
+               return;
        }
 
-       ret = bt_ctf_field_validate(enumeration->payload);
-end:
-       return ret;
+       BT_ASSERT(field_type_common_has_known_id((void *) field_common->type));
+       field_destroy_funcs[field_common->type->id](field);
 }
 
 static
-int bt_ctf_field_structure_validate(struct bt_ctf_field *field)
+struct bt_field *bt_field_integer_create(struct bt_field_type *type)
 {
-       int64_t i;
-       int ret = 0;
-       struct bt_ctf_field_structure *structure;
-
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
+       struct bt_field_common_integer *integer =
+               g_new0(struct bt_field_common_integer, 1);
 
-       structure = container_of(field, struct bt_ctf_field_structure, parent);
-       for (i = 0; i < structure->fields->len; i++) {
-               struct bt_ctf_field *entry_field = structure->fields->pdata[i];
-               ret = bt_ctf_field_validate(entry_field);
+       BT_LOGD("Creating integer field object: ft-addr=%p", type);
 
-               if (ret) {
-                       int this_ret;
-                       const char *name;
-                       struct bt_ctf_field_type *field_type =
-                                       bt_ctf_field_get_type(field);
-
-                       this_ret = bt_ctf_field_type_structure_get_field(
-                               field_type, &name, NULL, i);
-                       assert(this_ret == 0);
-                       BT_LOGW("Invalid structure field's field: "
-                               "struct-field-addr=%p, field-addr=%p, "
-                               "field-name=\"%s\", index=%" PRId64,
-                               field, entry_field, name, i);
-                       bt_put(field_type);
-                       goto end;
-               }
+       if (integer) {
+               bt_field_common_initialize(BT_TO_COMMON(integer), (void *) type,
+                       NULL, &bt_field_integer_methods);
+               BT_LOGD("Created integer field object: addr=%p, ft-addr=%p",
+                       integer, type);
+       } else {
+               BT_LOGE_STR("Failed to allocate one integer field.");
        }
-end:
-       return ret;
+
+       return (void *) integer;
 }
 
 static
-int bt_ctf_field_variant_validate(struct bt_ctf_field *field)
+struct bt_field *bt_field_enumeration_create(struct bt_field_type *type)
 {
-       int ret = 0;
-       struct bt_ctf_field_variant *variant;
+       struct bt_field_enumeration *enumeration = g_new0(
+               struct bt_field_enumeration, 1);
 
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
+       BT_LOGD("Creating enumeration field object: ft-addr=%p", type);
 
-       variant = container_of(field, struct bt_ctf_field_variant, parent);
-       ret = bt_ctf_field_validate(variant->payload);
-       if (ret) {
-               BT_LOGW("Invalid variant field's payload field: "
-                       "variant-field-addr=%p, variant-payload-field-addr=%p",
-                       field, variant->payload);
+       if (enumeration) {
+               bt_field_common_initialize(
+                       BT_TO_COMMON(BT_TO_COMMON(enumeration)),
+                       (void *) type, NULL, &bt_field_enumeration_methods);
+               BT_LOGD("Created enumeration field object: addr=%p, ft-addr=%p",
+                       enumeration, type);
+       } else {
+               BT_LOGE_STR("Failed to allocate one enumeration field.");
        }
-end:
-       return ret;
+
+       return (void *) enumeration;
 }
 
 static
-int bt_ctf_field_array_validate(struct bt_ctf_field *field)
+struct bt_field *bt_field_floating_point_create(struct bt_field_type *type)
 {
-       int64_t i;
-       int ret = 0;
-       struct bt_ctf_field_array *array;
-
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
+       struct bt_field_common_floating_point *floating_point;
 
-       array = container_of(field, struct bt_ctf_field_array, parent);
-       for (i = 0; i < array->elements->len; i++) {
-               struct bt_ctf_field *elem_field = array->elements->pdata[i];
+       BT_LOGD("Creating floating point number field object: ft-addr=%p", type);
+       floating_point = g_new0(struct bt_field_common_floating_point, 1);
 
-               ret = bt_ctf_field_validate(elem_field);
-               if (ret) {
-                       BT_LOGW("Invalid array field's element field: "
-                               "array-field-addr=%p, field-addr=%p, "
-                               "index=%" PRId64, field, elem_field, i);
-                       goto end;
-               }
+       if (floating_point) {
+               bt_field_common_initialize(BT_TO_COMMON(floating_point),
+                       (void *) type, NULL, &bt_field_floating_point_methods);
+               BT_LOGD("Created floating point number field object: addr=%p, ft-addr=%p",
+                       floating_point, type);
+       } else {
+               BT_LOGE_STR("Failed to allocate one floating point number field.");
        }
-end:
-       return ret;
+
+       return (void *) floating_point;
 }
 
-static
-int bt_ctf_field_sequence_validate(struct bt_ctf_field *field)
+BT_HIDDEN
+int bt_field_common_structure_initialize(struct bt_field_common *field,
+               struct bt_field_type_common *type,
+               bt_object_release_func release_func,
+               struct bt_field_common_methods *methods,
+               bt_field_common_create_func field_create_func,
+               GDestroyNotify field_release_func)
 {
-       size_t i;
        int ret = 0;
-       struct bt_ctf_field_sequence *sequence;
-
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
+       struct bt_field_type_common_structure *structure_type =
+               BT_FROM_COMMON(type);
+       struct bt_field_common_structure *structure = BT_FROM_COMMON(field);
+       size_t i;
 
-       sequence = container_of(field, struct bt_ctf_field_sequence, parent);
-       for (i = 0; i < sequence->elements->len; i++) {
-               struct bt_ctf_field *elem_field = sequence->elements->pdata[i];
+       BT_LOGD("Initializing common structure field object: ft-addr=%p", type);
+       bt_field_common_initialize(field, type, release_func, methods);
+       structure->fields = g_ptr_array_new_with_free_func(field_release_func);
+       g_ptr_array_set_size(structure->fields, structure_type->fields->len);
 
-               ret = bt_ctf_field_validate(elem_field);
-               if (ret) {
-                       BT_LOGW("Invalid sequence field's element field: "
-                               "sequence-field-addr=%p, field-addr=%p, "
-                               "index=%zu", field, elem_field, i);
+       /* Create all fields contained in the structure field. */
+       for (i = 0; i < structure_type->fields->len; i++) {
+               struct bt_field_common *field;
+               struct bt_field_type_common_structure_field *struct_field =
+                       BT_FIELD_TYPE_COMMON_STRUCTURE_FIELD_AT_INDEX(
+                               structure_type, i);
+               field = field_create_func(struct_field->type);
+               if (!field) {
+                       BT_LOGE("Failed to create structure field's member: name=\"%s\", index=%zu",
+                               g_quark_to_string(struct_field->name), i);
+                       ret = -1;
                        goto end;
                }
-       }
-end:
-       return ret;
-}
-
-static
-int bt_ctf_field_generic_reset(struct bt_ctf_field *field)
-{
-       int ret = 0;
 
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
+               g_ptr_array_index(structure->fields, i) = field;
        }
 
-       field->payload_set = false;
+       BT_LOGD("Initialized common structure field object: addr=%p, ft-addr=%p",
+               field, type);
+
 end:
        return ret;
 }
 
 static
-int bt_ctf_field_enumeration_reset(struct bt_ctf_field *field)
+struct bt_field *bt_field_structure_create(struct bt_field_type *type)
 {
-       int ret = 0;
-       struct bt_ctf_field_enumeration *enumeration;
+       struct bt_field_common_structure *structure = g_new0(
+               struct bt_field_common_structure, 1);
+       int iret;
 
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
+       BT_LOGD("Creating structure field object: ft-addr=%p", type);
+
+       if (!structure) {
+               BT_LOGE_STR("Failed to allocate one structure field.");
                goto end;
        }
 
-       enumeration = container_of(field, struct bt_ctf_field_enumeration,
-               parent);
-       if (!enumeration->payload) {
+       iret = bt_field_common_structure_initialize(BT_TO_COMMON(structure),
+               (void *) type, NULL, &bt_field_structure_methods,
+               (bt_field_common_create_func) bt_field_create_recursive,
+               (GDestroyNotify) bt_field_destroy_recursive);
+       if (iret) {
+               BT_PUT(structure);
                goto end;
        }
 
-       ret = bt_ctf_field_reset(enumeration->payload);
+       BT_LOGD("Created structure field object: addr=%p, ft-addr=%p",
+               structure, type);
+
 end:
-       return ret;
+       return (void *) structure;
 }
 
-static
-int bt_ctf_field_structure_reset(struct bt_ctf_field *field)
+BT_HIDDEN
+int bt_field_common_variant_initialize(struct bt_field_common *field,
+               struct bt_field_type_common *type,
+               bt_object_release_func release_func,
+               struct bt_field_common_methods *methods,
+               bt_field_common_create_func field_create_func,
+               GDestroyNotify field_release_func)
 {
-       int64_t i;
        int ret = 0;
-       struct bt_ctf_field_structure *structure;
+       struct bt_field_type_common_variant *variant_type =
+               BT_FROM_COMMON(type);
+       struct bt_field_common_variant *variant = BT_FROM_COMMON(field);
+       size_t i;
 
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
+       BT_LOGD("Initializing common variant field object: ft-addr=%p", type);
+       bt_field_common_initialize(field, type, release_func, methods);
+       ret = bt_field_type_common_variant_update_choices(type);
+       if (ret) {
+               BT_LOGE("Cannot update common variant field type choices: "
+                       "ret=%d", ret);
                goto end;
        }
 
-       structure = container_of(field, struct bt_ctf_field_structure, parent);
-       for (i = 0; i < structure->fields->len; i++) {
-               struct bt_ctf_field *member = structure->fields->pdata[i];
+       variant->fields = g_ptr_array_new_with_free_func(field_release_func);
+       g_ptr_array_set_size(variant->fields, variant_type->choices->len);
 
-               if (!member) {
-                       /*
-                        * Structure members are lazily initialized; skip if
-                        * this member has not been allocated yet.
-                        */
-                       continue;
-               }
+       /* Create all fields contained in the variant field. */
+       for (i = 0; i < variant_type->choices->len; i++) {
+               struct bt_field_common *field;
+               struct bt_field_type_common_variant_choice *var_choice =
+                       BT_FIELD_TYPE_COMMON_VARIANT_CHOICE_AT_INDEX(
+                               variant_type, i);
 
-               ret = bt_ctf_field_reset(member);
-               if (ret) {
-                       BT_LOGE("Failed to reset structure field's field: "
-                               "struct-field-addr=%p, field-addr=%p, "
-                               "index=%" PRId64, field, member, i);
+               field = field_create_func(var_choice->type);
+               if (!field) {
+                       BT_LOGE("Failed to create variant field's member: name=\"%s\", index=%zu",
+                               g_quark_to_string(var_choice->name), i);
+                       ret = -1;
                        goto end;
                }
-       }
-end:
-       return ret;
-}
-
-static
-int bt_ctf_field_variant_reset(struct bt_ctf_field *field)
-{
-       int ret = 0;
-       struct bt_ctf_field_variant *variant;
 
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
+               g_ptr_array_index(variant->fields, i) = field;
        }
 
-       variant = container_of(field, struct bt_ctf_field_variant, parent);
-       if (variant->payload) {
-               ret = bt_ctf_field_reset(variant->payload);
-               if (ret) {
-                       BT_LOGW("Failed to reset variant field's payload field: "
-                               "variant-field-addr=%p, payload-field-addr=%p",
-                               field, variant->payload);
-               }
-       }
+       BT_LOGD("Initialized common variant field object: addr=%p, ft-addr=%p",
+               field, type);
+
 end:
        return ret;
 }
 
 static
-int bt_ctf_field_array_reset(struct bt_ctf_field *field)
+struct bt_field *bt_field_variant_create(struct bt_field_type *type)
 {
-       size_t i;
-       int ret = 0;
-       struct bt_ctf_field_array *array;
+       struct bt_field_common_variant *variant = g_new0(
+               struct bt_field_common_variant, 1);
+       int iret;
 
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
+       BT_LOGD("Creating variant field object: ft-addr=%p", type);
+
+       if (!variant) {
+               BT_LOGE_STR("Failed to allocate one variant field.");
                goto end;
        }
 
-       array = container_of(field, struct bt_ctf_field_array, parent);
-       for (i = 0; i < array->elements->len; i++) {
-               struct bt_ctf_field *member = array->elements->pdata[i];
+       iret = bt_field_common_variant_initialize(BT_TO_COMMON(variant),
+               (void *) type, NULL, &bt_field_variant_methods,
+               (bt_field_common_create_func) bt_field_create_recursive,
+               (GDestroyNotify) bt_field_destroy_recursive);
+       if (iret) {
+               BT_PUT(variant);
+               goto end;
+       }
 
-               if (!member) {
-                       /*
-                        * Array elements are lazily initialized; skip if
-                        * this member has not been allocated yet.
-                        */
-                       continue;
-               }
+       BT_LOGD("Created variant field object: addr=%p, ft-addr=%p",
+               variant, type);
 
-               ret = bt_ctf_field_reset(member);
-               if (ret) {
-                       BT_LOGE("Failed to reset array field's field: "
-                               "array-field-addr=%p, field-addr=%p, "
-                               "index=%zu", field, member, i);
-                       goto end;
-               }
-       }
 end:
-       return ret;
+       return (void *) variant;
 }
 
-static
-int bt_ctf_field_sequence_reset(struct bt_ctf_field *field)
-{
-       size_t i;
+BT_HIDDEN
+int bt_field_common_array_initialize(struct bt_field_common *field,
+               struct bt_field_type_common *type,
+               bt_object_release_func release_func,
+               struct bt_field_common_methods *methods,
+               bt_field_common_create_func field_create_func,
+               GDestroyNotify field_destroy_func)
+{
+       struct bt_field_type_common_array *array_type = BT_FROM_COMMON(type);
+       struct bt_field_common_array *array = BT_FROM_COMMON(field);
+       unsigned int array_length;
        int ret = 0;
-       struct bt_ctf_field_sequence *sequence;
+       uint64_t i;
 
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
+       BT_LOGD("Initializing common array field object: ft-addr=%p", type);
+       BT_ASSERT(type);
+       bt_field_common_initialize(field, type, release_func, methods);
+       array_length = array_type->length;
+       array->elements = g_ptr_array_sized_new(array_length);
+       if (!array->elements) {
                ret = -1;
                goto end;
        }
 
-       sequence = container_of(field, struct bt_ctf_field_sequence, parent);
-       for (i = 0; i < sequence->elements->len; i++) {
-               struct bt_ctf_field *member = sequence->elements->pdata[i];
-
-               if (!member) {
-                       /*
-                        * Sequence elements are lazily initialized; skip if
-                        * this member has not been allocated yet.
-                        */
-                       continue;
-               }
+       g_ptr_array_set_free_func(array->elements, field_destroy_func);
+       g_ptr_array_set_size(array->elements, array_length);
 
-               ret = bt_ctf_field_reset(member);
-               if (ret) {
-                       BT_LOGE("Failed to reset sequence field's field: "
-                               "sequence-field-addr=%p, field-addr=%p, "
-                               "index=%zu", field, member, i);
+       for (i = 0; i < array_length; i++) {
+               array->elements->pdata[i] = field_create_func(
+                       array_type->element_ft);
+               if (!array->elements->pdata[i]) {
+                       ret = -1;
                        goto end;
                }
        }
+
+       BT_LOGD("Initialized common array field object: addr=%p, ft-addr=%p",
+               field, type);
+
 end:
        return ret;
 }
 
 static
-int bt_ctf_field_string_reset(struct bt_ctf_field *field)
+struct bt_field *bt_field_array_create(struct bt_field_type *type)
 {
-       int ret = 0;
-       struct bt_ctf_field_string *string;
+       struct bt_field_common_array *array =
+               g_new0(struct bt_field_common_array, 1);
+       int ret;
 
-       if (!field) {
-               BT_LOGD_STR("Invalid parameter: field is NULL.");
-               ret = -1;
-               goto end;
-       }
+       BT_LOGD("Creating array field object: ft-addr=%p", type);
+       BT_ASSERT(type);
 
-       ret = bt_ctf_field_generic_reset(field);
-       if (ret) {
+       if (!array) {
+               BT_LOGE_STR("Failed to allocate one array field.");
                goto end;
        }
 
-       string = container_of(field, struct bt_ctf_field_string, parent);
-       if (string->payload) {
-               g_string_truncate(string->payload, 0);
-       }
-end:
-       return ret;
-}
-
-static
-int bt_ctf_field_integer_serialize(struct bt_ctf_field *field,
-               struct bt_ctf_stream_pos *pos,
-               enum bt_ctf_byte_order native_byte_order)
-{
-       int ret = 0;
-       struct bt_ctf_field_integer *integer = container_of(field,
-               struct bt_ctf_field_integer, parent);
-
-       BT_LOGV("Serializing integer field: addr=%p, pos-offset=%" PRId64 ", "
-               "native-bo=%s", field, pos->offset,
-               bt_ctf_byte_order_string(native_byte_order));
-
-       if (!bt_ctf_field_generic_is_set(field)) {
-               BT_LOGW_STR("Field's payload is not set.");
-               ret = -1;
+       ret = bt_field_common_array_initialize(BT_TO_COMMON(array),
+               (void *) type, NULL, &bt_field_array_methods,
+               (bt_field_common_create_func) bt_field_create_recursive,
+               (GDestroyNotify) bt_field_destroy_recursive);
+       if (ret) {
+               BT_PUT(array);
                goto end;
        }
-retry:
-       ret = bt_ctf_field_integer_write(integer, pos, native_byte_order);
-       if (ret == -EFAULT) {
-               /*
-                * The field is too large to fit in the current packet's
-                * remaining space. Bump the packet size and retry.
-                */
-               ret = increase_packet_size(pos);
-               if (ret) {
-                       BT_LOGE("Cannot increase packet size: ret=%d", ret);
-                       goto end;
-               }
-               goto retry;
-       }
-end:
-       return ret;
-}
 
-static
-int bt_ctf_field_enumeration_serialize(struct bt_ctf_field *field,
-               struct bt_ctf_stream_pos *pos,
-               enum bt_ctf_byte_order native_byte_order)
-{
-       struct bt_ctf_field_enumeration *enumeration = container_of(
-               field, struct bt_ctf_field_enumeration, parent);
+       BT_LOGD("Created array field object: addr=%p, ft-addr=%p",
+               array, type);
 
-       BT_LOGV("Serializing enumeration field: addr=%p, pos-offset=%" PRId64 ", "
-               "native-bo=%s", field, pos->offset,
-               bt_ctf_byte_order_string(native_byte_order));
-       BT_LOGV_STR("Serializing enumeration field's payload field.");
-       return bt_ctf_field_serialize(enumeration->payload, pos,
-               native_byte_order);
+end:
+       return (void *) array;
 }
 
-static
-int bt_ctf_field_floating_point_serialize(struct bt_ctf_field *field,
-               struct bt_ctf_stream_pos *pos,
-               enum bt_ctf_byte_order native_byte_order)
+BT_HIDDEN
+int bt_field_common_sequence_initialize(struct bt_field_common *field,
+               struct bt_field_type_common *type,
+               bt_object_release_func release_func,
+               struct bt_field_common_methods *methods,
+               GDestroyNotify field_destroy_func)
 {
+       struct bt_field_common_sequence *sequence = BT_FROM_COMMON(field);
        int ret = 0;
-       struct bt_ctf_field_floating_point *floating_point = container_of(field,
-               struct bt_ctf_field_floating_point, parent);
-
-       BT_LOGV("Serializing floating point number field: addr=%p, pos-offset=%" PRId64 ", "
-               "native-bo=%s", field, pos->offset,
-               bt_ctf_byte_order_string(native_byte_order));
 
-       if (!bt_ctf_field_generic_is_set(field)) {
-               BT_LOGW_STR("Field's payload is not set.");
+       BT_LOGD("Initializing common sequence field object: ft-addr=%p", type);
+       BT_ASSERT(type);
+       bt_field_common_initialize(field, type, release_func, methods);
+       sequence->elements = g_ptr_array_new();
+       if (!sequence->elements) {
                ret = -1;
                goto end;
        }
-retry:
-       ret = bt_ctf_field_floating_point_write(floating_point, pos,
-               native_byte_order);
-       if (ret == -EFAULT) {
-               /*
-                * The field is too large to fit in the current packet's
-                * remaining space. Bump the packet size and retry.
-                */
-               ret = increase_packet_size(pos);
-               if (ret) {
-                       BT_LOGE("Cannot increase packet size: ret=%d", ret);
-                       goto end;
-               }
-               goto retry;
-       }
+
+       g_ptr_array_set_free_func(sequence->elements, field_destroy_func);
+       BT_LOGD("Initialized common sequence field object: addr=%p, ft-addr=%p",
+               field, type);
+
 end:
        return ret;
 }
 
 static
-int bt_ctf_field_structure_serialize(struct bt_ctf_field *field,
-               struct bt_ctf_stream_pos *pos,
-               enum bt_ctf_byte_order native_byte_order)
+struct bt_field *bt_field_sequence_create(struct bt_field_type *type)
 {
-       int64_t i;
-       int ret = 0;
-       struct bt_ctf_field_structure *structure = container_of(
-               field, struct bt_ctf_field_structure, parent);
+       struct bt_field_common_sequence *sequence =
+               g_new0(struct bt_field_common_sequence, 1);
+       int ret;
 
-       BT_LOGV("Serializing structure field: addr=%p, pos-offset=%" PRId64 ", "
-               "native-bo=%s", field, pos->offset,
-               bt_ctf_byte_order_string(native_byte_order));
+       BT_LOGD("Creating sequence field object: ft-addr=%p", type);
+       BT_ASSERT(type);
 
-       while (!bt_ctf_stream_pos_access_ok(pos,
-               offset_align(pos->offset, field->type->alignment))) {
-               ret = increase_packet_size(pos);
-               if (ret) {
-                       BT_LOGE("Cannot increase packet size: ret=%d", ret);
-                       goto end;
-               }
+       if (!sequence) {
+               BT_LOGE_STR("Failed to allocate one sequence field.");
+               goto end;
        }
 
-       if (!bt_ctf_stream_pos_align(pos, field->type->alignment)) {
-               BT_LOGE("Cannot align packet's position: pos-offset=%" PRId64 ", "
-                       "align=%u", pos->offset, field->type->alignment);
-               ret = -1;
+       ret = bt_field_common_sequence_initialize(BT_TO_COMMON(sequence),
+               (void *) type, NULL, &bt_field_sequence_methods,
+               (GDestroyNotify) bt_field_destroy_recursive);
+       if (ret) {
+               BT_PUT(sequence);
                goto end;
        }
 
-       for (i = 0; i < structure->fields->len; i++) {
-               struct bt_ctf_field *member = g_ptr_array_index(
-                       structure->fields, i);
-               const char *field_name = NULL;
-
-               if (BT_LOG_ON_WARN) {
-                       ret = bt_ctf_field_type_structure_get_field(
-                               field->type, &field_name, NULL, i);
-                       assert(ret == 0);
-               }
-
-               BT_LOGV("Serializing structure field's field: pos-offset=%" PRId64 ", "
-                       "field-addr=%p, index=%" PRId64,
-                       pos->offset, member, i);
-
-               if (!member) {
-                       BT_LOGW("Cannot serialize structure field's field: field is not set: "
-                               "struct-field-addr=%p, "
-                               "field-name=\"%s\", index=%" PRId64,
-                               field, field_name, i);
-                       ret = -1;
-                       goto end;
-               }
+       BT_LOGD("Created sequence field object: addr=%p, ft-addr=%p",
+               sequence, type);
 
-               ret = bt_ctf_field_serialize(member, pos, native_byte_order);
-               if (ret) {
-                       BT_LOGW("Cannot serialize structure field's field: "
-                               "struct-field-addr=%p, field-addr=%p, "
-                               "field-name=\"%s\", index=%" PRId64,
-                               field->type, member, field_name, i);
-                       break;
-               }
-       }
 end:
-       return ret;
+       return (void *) sequence;
 }
 
 static
-int bt_ctf_field_variant_serialize(struct bt_ctf_field *field,
-               struct bt_ctf_stream_pos *pos,
-               enum bt_ctf_byte_order native_byte_order)
+struct bt_field *bt_field_string_create(struct bt_field_type *type)
 {
-       struct bt_ctf_field_variant *variant = container_of(
-               field, struct bt_ctf_field_variant, parent);
+       struct bt_field_common_string *string = g_new0(
+               struct bt_field_common_string, 1);
+
+       BT_LOGD("Creating string field object: ft-addr=%p", type);
+
+       if (string) {
+               bt_field_common_initialize(BT_TO_COMMON(string),
+                       (void *) type, NULL, &bt_field_string_methods);
+               BT_LOGD("Created string field object: addr=%p, ft-addr=%p",
+                       string, type);
+       } else {
+               BT_LOGE_STR("Failed to allocate one string field.");
+       }
 
-       BT_LOGV("Serializing variant field: addr=%p, pos-offset=%" PRId64 ", "
-               "native-bo=%s", field, pos->offset,
-               bt_ctf_byte_order_string(native_byte_order));
-       BT_LOGV_STR("Serializing variant field's payload field.");
-       return bt_ctf_field_serialize(variant->payload, pos,
-               native_byte_order);
+       return (void *) string;
 }
 
-static
-int bt_ctf_field_array_serialize(struct bt_ctf_field *field,
-               struct bt_ctf_stream_pos *pos,
-               enum bt_ctf_byte_order native_byte_order)
+BT_HIDDEN
+int bt_field_common_generic_validate(struct bt_field_common *field)
+{
+       return (field && field->payload_set) ? 0 : -1;
+}
+
+BT_HIDDEN
+int bt_field_common_structure_validate_recursive(struct bt_field_common *field)
 {
        int64_t i;
        int ret = 0;
-       struct bt_ctf_field_array *array = container_of(
-               field, struct bt_ctf_field_array, parent);
+       struct bt_field_common_structure *structure = BT_FROM_COMMON(field);
 
-       BT_LOGV("Serializing array field: addr=%p, pos-offset=%" PRId64 ", "
-               "native-bo=%s", field, pos->offset,
-               bt_ctf_byte_order_string(native_byte_order));
+       BT_ASSERT(field);
+
+       for (i = 0; i < structure->fields->len; i++) {
+               ret = bt_field_common_validate_recursive(
+                       (void *) structure->fields->pdata[i]);
 
-       for (i = 0; i < array->elements->len; i++) {
-               struct bt_ctf_field *elem_field =
-                       g_ptr_array_index(array->elements, i);
-
-               BT_LOGV("Serializing array field's element field: "
-                       "pos-offset=%" PRId64 ", field-addr=%p, index=%" PRId64,
-                       pos->offset, elem_field, i);
-               ret = bt_ctf_field_serialize(elem_field, pos,
-                       native_byte_order);
                if (ret) {
-                       BT_LOGW("Cannot serialize array field's element field: "
-                               "array-field-addr=%p, field-addr=%p, "
-                               "index=%" PRId64, field, elem_field, i);
+                       int this_ret;
+                       const char *name;
+
+                       this_ret = bt_field_type_common_structure_borrow_field_by_index(
+                               field->type, &name, NULL, i);
+                       BT_ASSERT(this_ret == 0);
+                       BT_ASSERT_PRE_MSG("Invalid structure field's field: "
+                               "%![struct-field-]+_f, field-name=\"%s\", "
+                               "index=%" PRId64 ", %![field-]+_f",
+                               field, name, i, structure->fields->pdata[i]);
                        goto end;
                }
        }
+
 end:
        return ret;
 }
 
-static
-int bt_ctf_field_sequence_serialize(struct bt_ctf_field *field,
-               struct bt_ctf_stream_pos *pos,
-               enum bt_ctf_byte_order native_byte_order)
+BT_HIDDEN
+int bt_field_common_variant_validate_recursive(struct bt_field_common *field)
 {
-       int64_t i;
        int ret = 0;
-       struct bt_ctf_field_sequence *sequence = container_of(
-               field, struct bt_ctf_field_sequence, parent);
+       struct bt_field_common_variant *variant = BT_FROM_COMMON(field);
 
-       BT_LOGV("Serializing sequence field: addr=%p, pos-offset=%" PRId64 ", "
-               "native-bo=%s", field, pos->offset,
-               bt_ctf_byte_order_string(native_byte_order));
+       BT_ASSERT(field);
 
-       for (i = 0; i < sequence->elements->len; i++) {
-               struct bt_ctf_field *elem_field =
-                       g_ptr_array_index(sequence->elements, i);
-
-               BT_LOGV("Serializing sequence field's element field: "
-                       "pos-offset=%" PRId64 ", field-addr=%p, index=%" PRId64,
-                       pos->offset, elem_field, i);
-               ret = bt_ctf_field_serialize(elem_field, pos,
-                       native_byte_order);
-               if (ret) {
-                       BT_LOGW("Cannot serialize sequence field's element field: "
-                               "sequence-field-addr=%p, field-addr=%p, "
-                               "index=%" PRId64, field, elem_field, i);
-                       goto end;
-               }
+       if (!variant->current_field) {
+               ret = -1;
+               goto end;
        }
+
+       ret = bt_field_common_validate_recursive(variant->current_field);
+
 end:
        return ret;
 }
 
-static
-int bt_ctf_field_string_serialize(struct bt_ctf_field *field,
-               struct bt_ctf_stream_pos *pos,
-               enum bt_ctf_byte_order native_byte_order)
+BT_HIDDEN
+int bt_field_common_array_validate_recursive(struct bt_field_common *field)
 {
        int64_t i;
        int ret = 0;
-       struct bt_ctf_field_string *string = container_of(field,
-               struct bt_ctf_field_string, parent);
-       struct bt_ctf_field_type *character_type =
-               get_field_type(FIELD_TYPE_ALIAS_UINT8_T);
-       struct bt_ctf_field *character;
-
-       BT_LOGV("Serializing string field: addr=%p, pos-offset=%" PRId64 ", "
-               "native-bo=%s", field, pos->offset,
-               bt_ctf_byte_order_string(native_byte_order));
+       struct bt_field_common_array *array = BT_FROM_COMMON(field);
 
-       BT_LOGV_STR("Creating character field from string field's character field type.");
-       character = bt_ctf_field_create(character_type);
+       BT_ASSERT(field);
 
-       for (i = 0; i < string->payload->len + 1; i++) {
-               const uint64_t chr = (uint64_t) string->payload->str[i];
-
-               ret = bt_ctf_field_unsigned_integer_set_value(character, chr);
-               if (ret) {
-                       BT_LOGW("Cannot set character field's value: "
-                               "pos-offset=%" PRId64 ", field-addr=%p, "
-                               "index=%" PRId64 ", char-int=%" PRIu64,
-                               pos->offset, character, i, chr);
-                       goto end;
-               }
-
-               BT_LOGV("Serializing string field's character field: "
-                       "pos-offset=%" PRId64 ", field-addr=%p, "
-                       "index=%" PRId64 ", char-int=%" PRIu64,
-                       pos->offset, character, i, chr);
-               ret = bt_ctf_field_integer_serialize(character, pos,
-                       native_byte_order);
+       for (i = 0; i < array->elements->len; i++) {
+               ret = bt_field_common_validate_recursive((void *) array->elements->pdata[i]);
                if (ret) {
-                       BT_LOGW_STR("Cannot serialize character field.");
+                       BT_ASSERT_PRE_MSG("Invalid array field's element field: "
+                               "%![array-field-]+_f, " PRId64 ", "
+                               "%![elem-field-]+_f",
+                               field, i, array->elements->pdata[i]);
                        goto end;
                }
        }
+
 end:
-       bt_put(character);
-       bt_put(character_type);
        return ret;
 }
 
-static
-int bt_ctf_field_integer_copy(struct bt_ctf_field *src,
-               struct bt_ctf_field *dst)
+BT_HIDDEN
+int bt_field_common_sequence_validate_recursive(struct bt_field_common *field)
 {
-       struct bt_ctf_field_integer *integer_src, *integer_dst;
+       size_t i;
+       int ret = 0;
+       struct bt_field_common_sequence *sequence = BT_FROM_COMMON(field);
 
-       BT_LOGD("Copying integer field: src-field-addr=%p, dst-field-addr=%p",
-               src, dst);
-       integer_src = container_of(src, struct bt_ctf_field_integer, parent);
-       integer_dst = container_of(dst, struct bt_ctf_field_integer, parent);
-       integer_dst->payload = integer_src->payload;
-       BT_LOGD_STR("Copied integer field.");
-       return 0;
-}
+       BT_ASSERT(field);
 
-static
-int bt_ctf_field_enumeration_copy(struct bt_ctf_field *src,
-               struct bt_ctf_field *dst)
-{
-       int ret = 0;
-       struct bt_ctf_field_enumeration *enum_src, *enum_dst;
-
-       BT_LOGD("Copying enumeration field: src-field-addr=%p, dst-field-addr=%p",
-               src, dst);
-       enum_src = container_of(src, struct bt_ctf_field_enumeration, parent);
-       enum_dst = container_of(dst, struct bt_ctf_field_enumeration, parent);
-
-       if (enum_src->payload) {
-               BT_LOGD_STR("Copying enumeration field's payload field.");
-               enum_dst->payload = bt_ctf_field_copy(enum_src->payload);
-               if (!enum_dst->payload) {
-                       BT_LOGE_STR("Cannot copy enumeration field's payload field.");
-                       ret = -1;
+       for (i = 0; i < sequence->elements->len; i++) {
+               ret = bt_field_common_validate_recursive(
+                       (void *) sequence->elements->pdata[i]);
+               if (ret) {
+                       BT_ASSERT_PRE_MSG("Invalid sequence field's element field: "
+                               "%![seq-field-]+_f, " PRId64 ", "
+                               "%![elem-field-]+_f",
+                               field, i, sequence->elements->pdata[i]);
                        goto end;
                }
        }
-
-       BT_LOGD_STR("Copied enumeration field.");
 end:
        return ret;
 }
 
-static
-int bt_ctf_field_floating_point_copy(
-               struct bt_ctf_field *src, struct bt_ctf_field *dst)
-{
-       struct bt_ctf_field_floating_point *float_src, *float_dst;
-
-       BT_LOGD("Copying floating point number field: src-field-addr=%p, dst-field-addr=%p",
-               src, dst);
-       float_src = container_of(src, struct bt_ctf_field_floating_point,
-               parent);
-       float_dst = container_of(dst, struct bt_ctf_field_floating_point,
-               parent);
-       float_dst->payload = float_src->payload;
-       BT_LOGD_STR("Copied floating point number field.");
-       return 0;
+BT_HIDDEN
+void bt_field_common_generic_reset(struct bt_field_common *field)
+{
+       BT_ASSERT(field);
+       field->payload_set = false;
 }
 
-static
-int bt_ctf_field_structure_copy(struct bt_ctf_field *src,
-               struct bt_ctf_field *dst)
+BT_HIDDEN
+void bt_field_common_structure_reset_recursive(struct bt_field_common *field)
 {
-       int ret = 0;
        int64_t i;
-       struct bt_ctf_field_structure *struct_src, *struct_dst;
-
-       BT_LOGD("Copying structure field: src-field-addr=%p, dst-field-addr=%p",
-               src, dst);
-       struct_src = container_of(src, struct bt_ctf_field_structure, parent);
-       struct_dst = container_of(dst, struct bt_ctf_field_structure, parent);
-
-       g_ptr_array_set_size(struct_dst->fields, struct_src->fields->len);
-
-       for (i = 0; i < struct_src->fields->len; i++) {
-               struct bt_ctf_field *field =
-                       g_ptr_array_index(struct_src->fields, i);
-               struct bt_ctf_field *field_copy = NULL;
-
-               if (field) {
-                       BT_LOGD("Copying structure field's field: src-field-addr=%p"
-                               "index=%" PRId64, field, i);
-                       field_copy = bt_ctf_field_copy(field);
-                       if (!field_copy) {
-                               BT_LOGE("Cannot copy structure field's field: "
-                                       "src-field-addr=%p, index=%" PRId64,
-                                       field, i);
-                               ret = -1;
-                               goto end;
-                       }
-               }
-
-               BT_MOVE(g_ptr_array_index(struct_dst->fields, i), field_copy);
-       }
+       struct bt_field_common_structure *structure = BT_FROM_COMMON(field);
 
-       BT_LOGD_STR("Copied structure field.");
+       BT_ASSERT(field);
 
-end:
-       return ret;
-}
+       for (i = 0; i < structure->fields->len; i++) {
+               struct bt_field_common *member = structure->fields->pdata[i];
 
-static
-int bt_ctf_field_variant_copy(struct bt_ctf_field *src,
-               struct bt_ctf_field *dst)
-{
-       int ret = 0;
-       struct bt_ctf_field_variant *variant_src, *variant_dst;
-
-       BT_LOGD("Copying variant field: src-field-addr=%p, dst-field-addr=%p",
-               src, dst);
-       variant_src = container_of(src, struct bt_ctf_field_variant, parent);
-       variant_dst = container_of(dst, struct bt_ctf_field_variant, parent);
-
-       if (variant_src->tag) {
-               BT_LOGD_STR("Copying variant field's tag field.");
-               variant_dst->tag = bt_ctf_field_copy(variant_src->tag);
-               if (!variant_dst->tag) {
-                       BT_LOGE_STR("Cannot copy variant field's tag field.");
-                       ret = -1;
-                       goto end;
-               }
-       }
-       if (variant_src->payload) {
-               BT_LOGD_STR("Copying variant field's payload field.");
-               variant_dst->payload = bt_ctf_field_copy(variant_src->payload);
-               if (!variant_dst->payload) {
-                       BT_LOGE_STR("Cannot copy variant field's payload field.");
-                       ret = -1;
-                       goto end;
+               if (!member) {
+                       /*
+                        * Structure members are lazily initialized;
+                        * skip if this member has not been allocated
+                        * yet.
+                        */
+                       continue;
                }
-       }
-
-       BT_LOGD_STR("Copied variant field.");
 
-end:
-       return ret;
+               bt_field_common_reset_recursive(member);
+       }
 }
 
-static
-int bt_ctf_field_array_copy(struct bt_ctf_field *src,
-               struct bt_ctf_field *dst)
+BT_HIDDEN
+void bt_field_common_variant_reset_recursive(struct bt_field_common *field)
 {
-       int ret = 0;
-       int64_t i;
-       struct bt_ctf_field_array *array_src, *array_dst;
-
-       BT_LOGD("Copying array field: src-field-addr=%p, dst-field-addr=%p",
-               src, dst);
-       array_src = container_of(src, struct bt_ctf_field_array, parent);
-       array_dst = container_of(dst, struct bt_ctf_field_array, parent);
-
-       g_ptr_array_set_size(array_dst->elements, array_src->elements->len);
-       for (i = 0; i < array_src->elements->len; i++) {
-               struct bt_ctf_field *field =
-                       g_ptr_array_index(array_src->elements, i);
-               struct bt_ctf_field *field_copy = NULL;
-
-               if (field) {
-                       BT_LOGD("Copying array field's element field: field-addr=%p, "
-                               "index=%" PRId64, field, i);
-                       field_copy = bt_ctf_field_copy(field);
-                       if (!field_copy) {
-                               BT_LOGE("Cannot copy array field's element field: "
-                                       "src-field-addr=%p, index=%" PRId64,
-                                       field, i);
-                               ret = -1;
-                               goto end;
-                       }
-               }
-
-               g_ptr_array_index(array_dst->elements, i) = field_copy;
-       }
+       struct bt_field_common_variant *variant = BT_FROM_COMMON(field);
 
-       BT_LOGD_STR("Copied array field.");
-
-end:
-       return ret;
+       BT_ASSERT(field);
+       variant->current_field = NULL;
 }
 
-static
-int bt_ctf_field_sequence_copy(struct bt_ctf_field *src,
-               struct bt_ctf_field *dst)
+BT_HIDDEN
+void bt_field_common_array_reset_recursive(struct bt_field_common *field)
 {
-       int ret = 0;
-       int64_t i;
-       struct bt_ctf_field_sequence *sequence_src, *sequence_dst;
-       struct bt_ctf_field *src_length;
-       struct bt_ctf_field *dst_length;
-
-       BT_LOGD("Copying sequence field: src-field-addr=%p, dst-field-addr=%p",
-               src, dst);
-       sequence_src = container_of(src, struct bt_ctf_field_sequence, parent);
-       sequence_dst = container_of(dst, struct bt_ctf_field_sequence, parent);
-
-       src_length = bt_ctf_field_sequence_get_length(src);
-       if (!src_length) {
-               /* no length set yet: keep destination sequence empty */
-               goto end;
-       }
+       size_t i;
+       struct bt_field_common_array *array = BT_FROM_COMMON(field);
 
-       /* copy source length */
-       BT_LOGD_STR("Copying sequence field's length field.");
-       dst_length = bt_ctf_field_copy(src_length);
-       BT_PUT(src_length);
-       if (!dst_length) {
-               BT_LOGE_STR("Cannot copy sequence field's length field.");
-               ret = -1;
-               goto end;
-       }
+       BT_ASSERT(field);
 
-       /* this will initialize the destination sequence's internal array */
-       ret = bt_ctf_field_sequence_set_length(dst, dst_length);
-       bt_put(dst_length);
-       if (ret) {
-               BT_LOGE("Cannot set sequence field copy's length field: "
-                       "dst-length-field-addr=%p", dst_length);
-               ret = -1;
-               goto end;
-       }
+       for (i = 0; i < array->elements->len; i++) {
+               struct bt_field_common *member = array->elements->pdata[i];
 
-       assert(sequence_dst->elements->len == sequence_src->elements->len);
-
-       for (i = 0; i < sequence_src->elements->len; i++) {
-               struct bt_ctf_field *field =
-                       g_ptr_array_index(sequence_src->elements, i);
-               struct bt_ctf_field *field_copy = NULL;
-
-               if (field) {
-                       BT_LOGD("Copying sequence field's element field: field-addr=%p, "
-                               "index=%" PRId64, field, i);
-                       field_copy = bt_ctf_field_copy(field);
-                       if (!field_copy) {
-                               BT_LOGE("Cannot copy sequence field's element field: "
-                                       "src-field-addr=%p, index=%" PRId64,
-                                       field, i);
-                               ret = -1;
-                               goto end;
-                       }
+               if (!member) {
+                       /*
+                        * Array elements are lazily initialized; skip
+                        * if this member has not been allocated yet.
+                        */
+                       continue;
                }
 
-               g_ptr_array_index(sequence_dst->elements, i) = field_copy;
+               bt_field_common_reset_recursive(member);
        }
-
-       BT_LOGD_STR("Copied sequence field.");
-
-end:
-       return ret;
 }
 
-static
-int bt_ctf_field_string_copy(struct bt_ctf_field *src,
-               struct bt_ctf_field *dst)
+BT_HIDDEN
+void bt_field_common_sequence_reset_recursive(struct bt_field_common *field)
 {
-       int ret = 0;
-       struct bt_ctf_field_string *string_src, *string_dst;
+       struct bt_field_common_sequence *sequence = BT_FROM_COMMON(field);
+       uint64_t i;
 
-       BT_LOGD("Copying string field: src-field-addr=%p, dst-field-addr=%p",
-               src, dst);
-       string_src = container_of(src, struct bt_ctf_field_string, parent);
-       string_dst = container_of(dst, struct bt_ctf_field_string, parent);
+       BT_ASSERT(field);
 
-       if (string_src->payload) {
-               string_dst->payload = g_string_new(string_src->payload->str);
-               if (!string_dst->payload) {
-                       BT_LOGE_STR("Failed to allocate a GString.");
-                       ret = -1;
-                       goto end;
+       for (i = 0; i < sequence->elements->len; i++) {
+               if (sequence->elements->pdata[i]) {
+                       bt_field_common_reset_recursive(
+                               sequence->elements->pdata[i]);
                }
        }
 
-       BT_LOGD_STR("Copied string field.");
-
-end:
-       return ret;
+       sequence->length = 0;
 }
 
-static
-int increase_packet_size(struct bt_ctf_stream_pos *pos)
+BT_HIDDEN
+void bt_field_common_string_reset(struct bt_field_common *field)
 {
-       int ret;
-
-       assert(pos);
-       BT_LOGV("Increasing packet size: pos-offset=%" PRId64 ", "
-               "cur-packet-size=%" PRIu64,
-               pos->offset, pos->packet_size);
-       ret = munmap_align(pos->base_mma);
-       if (ret) {
-               BT_LOGE_ERRNO("Failed to perform an aligned memory unmapping",
-                       ": ret=%d", ret);
-               goto end;
-       }
+       struct bt_field_common_string *string = BT_FROM_COMMON(field);
 
-       pos->packet_size += PACKET_LEN_INCREMENT;
-       do {
-               ret = bt_posix_fallocate(pos->fd, pos->mmap_offset,
-                       pos->packet_size / CHAR_BIT);
-       } while (ret == EINTR);
-       if (ret) {
-               BT_LOGE_ERRNO("Failed to preallocate memory space",
-                       ": ret=%d", ret);
-               errno = EINTR;
-               ret = -1;
-               goto end;
-       }
+       BT_ASSERT(field);
+       bt_field_common_generic_reset(field);
 
-       pos->base_mma = mmap_align(pos->packet_size / CHAR_BIT, pos->prot,
-               pos->flags, pos->fd, pos->mmap_offset);
-       if (pos->base_mma == MAP_FAILED) {
-               BT_LOGE_ERRNO("Failed to perform an aligned memory mapping",
-                       ": ret=%d", ret);
-               ret = -1;
+       if (string->payload) {
+               g_string_truncate(string->payload, 0);
        }
-
-       BT_LOGV("Increased packet size: pos-offset=%" PRId64 ", "
-               "new-packet-size=%" PRIu64,
-               pos->offset, pos->packet_size);
-       assert(pos->packet_size % 8 == 0);
-
-end:
-       return ret;
-}
-
-static
-void generic_field_freeze(struct bt_ctf_field *field)
-{
-       field->frozen = true;
 }
 
-static
-void bt_ctf_field_enumeration_freeze(struct bt_ctf_field *field)
+BT_HIDDEN
+void bt_field_common_generic_set_is_frozen(struct bt_field_common *field,
+               bool is_frozen)
 {
-       struct bt_ctf_field_enumeration *enum_field =
-               container_of(field, struct bt_ctf_field_enumeration, parent);
-
-       BT_LOGD("Freezing enumeration field object: addr=%p", field);
-       BT_LOGD("Freezing enumeration field object's contained payload field: payload-field-addr=%p", enum_field->payload);
-       bt_ctf_field_freeze(enum_field->payload);
-       generic_field_freeze(field);
+       field->frozen = is_frozen;
 }
 
-static
-void bt_ctf_field_structure_freeze(struct bt_ctf_field *field)
+BT_HIDDEN
+void bt_field_common_structure_set_is_frozen_recursive(
+               struct bt_field_common *field, bool is_frozen)
 {
-       int64_t i;
-       struct bt_ctf_field_structure *structure_field =
-               container_of(field, struct bt_ctf_field_structure, parent);
+       uint64_t i;
+       struct bt_field_common_structure *structure_field =
+               BT_FROM_COMMON(field);
 
        BT_LOGD("Freezing structure field object: addr=%p", field);
 
        for (i = 0; i < structure_field->fields->len; i++) {
-               struct bt_ctf_field *field =
+               struct bt_field_common *struct_field =
                        g_ptr_array_index(structure_field->fields, i);
 
                BT_LOGD("Freezing structure field's field: field-addr=%p, index=%" PRId64,
-                       field, i);
-               bt_ctf_field_freeze(field);
+                       struct_field, i);
+               bt_field_common_set_is_frozen_recursive(struct_field,
+                       is_frozen);
        }
 
-       generic_field_freeze(field);
+       bt_field_common_generic_set_is_frozen(field, is_frozen);
 }
 
-static
-void bt_ctf_field_variant_freeze(struct bt_ctf_field *field)
+BT_HIDDEN
+void bt_field_common_variant_set_is_frozen_recursive(
+               struct bt_field_common *field, bool is_frozen)
 {
-       struct bt_ctf_field_variant *variant_field =
-               container_of(field, struct bt_ctf_field_variant, parent);
+       uint64_t i;
+       struct bt_field_common_variant *variant_field = BT_FROM_COMMON(field);
 
        BT_LOGD("Freezing variant field object: addr=%p", field);
-       BT_LOGD("Freezing variant field object's tag field: tag-field-addr=%p", variant_field->tag);
-       bt_ctf_field_freeze(variant_field->tag);
-       BT_LOGD("Freezing variant field object's payload field: payload-field-addr=%p", variant_field->payload);
-       bt_ctf_field_freeze(variant_field->payload);
-       generic_field_freeze(field);
+
+       for (i = 0; i < variant_field->fields->len; i++) {
+               struct bt_field_common *var_field =
+                       g_ptr_array_index(variant_field->fields, i);
+
+               BT_LOGD("Freezing variant field's field: field-addr=%p, index=%" PRId64,
+                       var_field, i);
+               bt_field_common_set_is_frozen_recursive(var_field, is_frozen);
+       }
+
+       bt_field_common_generic_set_is_frozen(field, is_frozen);
 }
 
-static
-void bt_ctf_field_array_freeze(struct bt_ctf_field *field)
+BT_HIDDEN
+void bt_field_common_array_set_is_frozen_recursive(
+               struct bt_field_common *field, bool is_frozen)
 {
        int64_t i;
-       struct bt_ctf_field_array *array_field =
-               container_of(field, struct bt_ctf_field_array, parent);
+       struct bt_field_common_array *array_field = BT_FROM_COMMON(field);
 
        BT_LOGD("Freezing array field object: addr=%p", field);
 
        for (i = 0; i < array_field->elements->len; i++) {
-               struct bt_ctf_field *elem_field =
+               struct bt_field_common *elem_field =
                        g_ptr_array_index(array_field->elements, i);
 
                BT_LOGD("Freezing array field object's element field: "
                        "element-field-addr=%p, index=%" PRId64,
                        elem_field, i);
-               bt_ctf_field_freeze(elem_field);
+               bt_field_common_set_is_frozen_recursive(elem_field, is_frozen);
        }
 
-       generic_field_freeze(field);
+       bt_field_common_generic_set_is_frozen(field, is_frozen);
 }
 
-static
-void bt_ctf_field_sequence_freeze(struct bt_ctf_field *field)
+BT_HIDDEN
+void bt_field_common_sequence_set_is_frozen_recursive(
+               struct bt_field_common *field, bool is_frozen)
 {
        int64_t i;
-       struct bt_ctf_field_sequence *sequence_field =
-               container_of(field, struct bt_ctf_field_sequence, parent);
+       struct bt_field_common_sequence *sequence_field =
+               BT_FROM_COMMON(field);
 
        BT_LOGD("Freezing sequence field object: addr=%p", field);
-       BT_LOGD("Freezing sequence field object's length field: length-field-addr=%p",
-               sequence_field->length);
-       bt_ctf_field_freeze(sequence_field->length);
 
-       for (i = 0; i < sequence_field->elements->len; i++) {
-               struct bt_ctf_field *elem_field =
+       for (i = 0; i < sequence_field->length; i++) {
+               struct bt_field_common *elem_field =
                        g_ptr_array_index(sequence_field->elements, i);
 
                BT_LOGD("Freezing sequence field object's element field: "
                        "element-field-addr=%p, index=%" PRId64,
                        elem_field, i);
-               bt_ctf_field_freeze(elem_field);
+               bt_field_common_set_is_frozen_recursive(elem_field, is_frozen);
        }
 
-       generic_field_freeze(field);
+       bt_field_common_generic_set_is_frozen(field, is_frozen);
 }
 
 BT_HIDDEN
-void bt_ctf_field_freeze(struct bt_ctf_field *field)
+void _bt_field_common_set_is_frozen_recursive(struct bt_field_common *field,
+               bool is_frozen)
 {
-       enum bt_ctf_field_type_id type_id;
-
        if (!field) {
                goto end;
        }
@@ -3127,120 +1244,101 @@ void bt_ctf_field_freeze(struct bt_ctf_field *field)
                goto end;
        }
 
-       BT_LOGD("Freezing field object: addr=%p", field);
-       type_id = bt_ctf_field_get_type_id(field);
-       assert(type_id > BT_CTF_FIELD_TYPE_ID_UNKNOWN &&
-                       type_id < BT_CTF_NR_TYPE_IDS);
-       field_freeze_funcs[type_id](field);
+       BT_LOGD("Setting field object's frozen state: addr=%p, is-frozen=%d",
+               field, is_frozen);
+       BT_ASSERT(field_type_common_has_known_id(field->type));
+       BT_ASSERT(field->methods->set_is_frozen);
+       field->methods->set_is_frozen(field, is_frozen);
+
 end:
        return;
 }
 
-static
-bt_bool bt_ctf_field_generic_is_set(struct bt_ctf_field *field)
+BT_HIDDEN
+bt_bool bt_field_common_generic_is_set(struct bt_field_common *field)
 {
        return field && field->payload_set;
 }
 
-static
-bt_bool bt_ctf_field_enumeration_is_set(struct bt_ctf_field *field)
-{
-       bt_bool is_set = BT_FALSE;
-       struct bt_ctf_field_enumeration *enumeration;
-
-       if (!field) {
-               goto end;
-       }
-
-       enumeration = container_of(field, struct bt_ctf_field_enumeration,
-                       parent);
-       if (!enumeration->payload) {
-               goto end;
-       }
-
-       is_set = bt_ctf_field_is_set(enumeration->payload);
-end:
-       return is_set;
-}
-
-static
-bt_bool bt_ctf_field_structure_is_set(struct bt_ctf_field *field)
+BT_HIDDEN
+bt_bool bt_field_common_structure_is_set_recursive(
+               struct bt_field_common *field)
 {
        bt_bool is_set = BT_FALSE;
        size_t i;
-       struct bt_ctf_field_structure *structure;
+       struct bt_field_common_structure *structure = BT_FROM_COMMON(field);
 
-       if (!field) {
-               goto end;
-       }
+       BT_ASSERT(field);
 
-       structure = container_of(field, struct bt_ctf_field_structure, parent);
        for (i = 0; i < structure->fields->len; i++) {
-               is_set = bt_ctf_field_is_set(structure->fields->pdata[i]);
+               is_set = bt_field_common_is_set_recursive(
+                       structure->fields->pdata[i]);
                if (!is_set) {
                        goto end;
                }
        }
+
 end:
        return is_set;
 }
 
-static
-bt_bool bt_ctf_field_variant_is_set(struct bt_ctf_field *field)
+BT_HIDDEN
+bt_bool bt_field_common_variant_is_set_recursive(struct bt_field_common *field)
 {
+       struct bt_field_common_variant *variant = BT_FROM_COMMON(field);
        bt_bool is_set = BT_FALSE;
-       struct bt_ctf_field_variant *variant;
 
-       if (!field) {
-               goto end;
+       BT_ASSERT(field);
+
+       if (variant->current_field) {
+               is_set = bt_field_common_is_set_recursive(
+                       variant->current_field);
        }
 
-       variant = container_of(field, struct bt_ctf_field_variant, parent);
-       is_set = bt_ctf_field_is_set(variant->payload);
-end:
        return is_set;
 }
 
-static
-bt_bool bt_ctf_field_array_is_set(struct bt_ctf_field *field)
+BT_HIDDEN
+bt_bool bt_field_common_array_is_set_recursive(struct bt_field_common *field)
 {
        size_t i;
        bt_bool is_set = BT_FALSE;
-       struct bt_ctf_field_array *array;
+       struct bt_field_common_array *array = BT_FROM_COMMON(field);
 
-       if (!field) {
-               goto end;
-       }
+       BT_ASSERT(field);
 
-       array = container_of(field, struct bt_ctf_field_array, parent);
        for (i = 0; i < array->elements->len; i++) {
-               is_set = bt_ctf_field_is_set(array->elements->pdata[i]);
+               is_set = bt_field_common_is_set_recursive(array->elements->pdata[i]);
                if (!is_set) {
                        goto end;
                }
        }
+
 end:
        return is_set;
 }
 
-static
-bt_bool bt_ctf_field_sequence_is_set(struct bt_ctf_field *field)
+BT_HIDDEN
+bt_bool bt_field_common_sequence_is_set_recursive(struct bt_field_common *field)
 {
        size_t i;
        bt_bool is_set = BT_FALSE;
-       struct bt_ctf_field_sequence *sequence;
+       struct bt_field_common_sequence *sequence = BT_FROM_COMMON(field);
 
-       if (!field) {
+       BT_ASSERT(field);
+
+       if (!sequence->elements) {
                goto end;
        }
 
-       sequence = container_of(field, struct bt_ctf_field_sequence, parent);
        for (i = 0; i < sequence->elements->len; i++) {
-               is_set = bt_ctf_field_validate(sequence->elements->pdata[i]);
+               is_set = bt_field_common_is_set_recursive(
+                       sequence->elements->pdata[i]);
                if (!is_set) {
                        goto end;
                }
        }
+
 end:
        return is_set;
 }
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