--- /dev/null
+#ifndef BABELTRACE_TRACE_IR_FIELDS_INTERNAL_H
+#define BABELTRACE_TRACE_IR_FIELDS_INTERNAL_H
+
+/*
+ * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
+ * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <babeltrace2/assert-pre-internal.h>
+#include <babeltrace2/common-internal.h>
+#include <babeltrace2/trace-ir/field-class-internal.h>
+#include <babeltrace2/trace-ir/utils-internal.h>
+#include <babeltrace2/object-internal.h>
+#include <babeltrace2/babeltrace-internal.h>
+#include <babeltrace2/types.h>
+#include <stdint.h>
+#include <string.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include <glib.h>
+
+#define BT_ASSERT_PRE_FIELD_HAS_CLASS_TYPE(_field, _cls_type, _name) \
+ BT_ASSERT_PRE(((const struct bt_field *) (_field))->class->type == (_cls_type), \
+ _name " has the wrong class type: expected-class-type=%s, " \
+ "%![field-]+f", \
+ bt_common_field_class_type_string(_cls_type), (_field))
+
+#define BT_ASSERT_PRE_FIELD_IS_UNSIGNED_INT(_field, _name) \
+ BT_ASSERT_PRE( \
+ ((const struct bt_field *) (_field))->class->type == BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER || \
+ ((const struct bt_field *) (_field))->class->type == BT_FIELD_CLASS_TYPE_UNSIGNED_ENUMERATION, \
+ _name " is not an unsigned integer field: %![field-]+f", \
+ (_field))
+
+#define BT_ASSERT_PRE_FIELD_IS_SIGNED_INT(_field, _name) \
+ BT_ASSERT_PRE( \
+ ((const struct bt_field *) (_field))->class->type == BT_FIELD_CLASS_TYPE_SIGNED_INTEGER || \
+ ((const struct bt_field *) (_field))->class->type == BT_FIELD_CLASS_TYPE_SIGNED_ENUMERATION, \
+ _name " is not a signed integer field: %![field-]+f", \
+ (_field))
+
+#define BT_ASSERT_PRE_FIELD_IS_ARRAY(_field, _name) \
+ BT_ASSERT_PRE( \
+ ((const struct bt_field *) (_field))->class->type == BT_FIELD_CLASS_TYPE_STATIC_ARRAY || \
+ ((const struct bt_field *) (_field))->class->type == BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY, \
+ _name " is not an array field: %![field-]+f", (_field))
+
+#define BT_ASSERT_PRE_FIELD_IS_SET(_field, _name) \
+ BT_ASSERT_PRE(bt_field_is_set(_field), \
+ _name " is not set: %!+f", (_field))
+
+#define BT_ASSERT_PRE_FIELD_HOT(_field, _name) \
+ BT_ASSERT_PRE_HOT((const struct bt_field *) (_field), (_name), \
+ ": %!+f", (_field))
+
+struct bt_field;
+
+typedef struct bt_field *(* bt_field_create_func)(struct bt_field_class *);
+typedef void (*bt_field_method_set_is_frozen)(struct bt_field *, bool);
+typedef bool (*bt_field_method_is_set)(const struct bt_field *);
+typedef void (*bt_field_method_reset)(struct bt_field *);
+
+struct bt_field_methods {
+ bt_field_method_set_is_frozen set_is_frozen;
+ bt_field_method_is_set is_set;
+ bt_field_method_reset reset;
+};
+
+struct bt_field {
+ struct bt_object base;
+
+ /* Owned by this */
+ struct bt_field_class *class;
+
+ /* Virtual table for slow path (dev mode) operations */
+ struct bt_field_methods *methods;
+
+ bool is_set;
+ bool frozen;
+};
+
+struct bt_field_integer {
+ struct bt_field common;
+
+ union {
+ uint64_t u;
+ int64_t i;
+ } value;
+};
+
+struct bt_field_real {
+ struct bt_field common;
+ double value;
+};
+
+struct bt_field_structure {
+ struct bt_field common;
+
+ /* Array of `struct bt_field *`, owned by this */
+ GPtrArray *fields;
+};
+
+struct bt_field_variant {
+ struct bt_field common;
+
+ /* Weak: belongs to `fields` below */
+ struct bt_field *selected_field;
+
+ /* Index of currently selected field */
+ uint64_t selected_index;
+
+ /* Array of `struct bt_field *`, owned by this */
+ GPtrArray *fields;
+};
+
+struct bt_field_array {
+ struct bt_field common;
+
+ /* Array of `struct bt_field *`, owned by this */
+ GPtrArray *fields;
+
+ /* Current effective length */
+ uint64_t length;
+};
+
+struct bt_field_string {
+ struct bt_field common;
+ GArray *buf;
+ uint64_t length;
+};
+
+#ifdef BT_DEV_MODE
+# define bt_field_set_is_frozen _bt_field_set_is_frozen
+# define bt_field_is_set _bt_field_is_set
+# define bt_field_reset _bt_field_reset
+# define bt_field_set_single _bt_field_set_single
+#else
+# define bt_field_set_is_frozen(_field, _is_frozen)
+# define bt_field_is_set(_field) (BT_FALSE)
+# define bt_field_reset(_field)
+# define bt_field_set_single(_field, _val)
+#endif
+
+BT_HIDDEN
+void _bt_field_set_is_frozen(const struct bt_field *field, bool is_frozen);
+
+static inline
+void _bt_field_reset(const struct bt_field *field)
+{
+ BT_ASSERT(field);
+ BT_ASSERT(field->methods->reset);
+ field->methods->reset((void *) field);
+}
+
+static inline
+void _bt_field_set_single(struct bt_field *field, bool value)
+{
+ BT_ASSERT(field);
+ field->is_set = value;
+}
+
+static inline
+bt_bool _bt_field_is_set(const struct bt_field *field)
+{
+ bt_bool is_set = BT_FALSE;
+
+ if (!field) {
+ goto end;
+ }
+
+ BT_ASSERT(bt_field_class_has_known_type(field->class));
+ BT_ASSERT(field->methods->is_set);
+ is_set = field->methods->is_set(field);
+
+end:
+ return is_set;
+}
+
+BT_HIDDEN
+struct bt_field *bt_field_create(struct bt_field_class *class);
+
+BT_HIDDEN
+void bt_field_destroy(struct bt_field *field);
+
+#endif /* BABELTRACE_TRACE_IR_FIELDS_INTERNAL_H */
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