Rename bt_ctf_X -> bt_X, maintain backward compat. for pre-2.0 CTF writer
[babeltrace.git] / plugins / ctf / common / metadata / visitor-generate-ir.c
index 19a67896bfe936b850d7b41d75c66cf2f71c6cc0..f5fab1520f1c062e9b737cf4936d590924bb4e77 100644 (file)
 #include <errno.h>
 #include <babeltrace/compat/uuid-internal.h>
 #include <babeltrace/endian-internal.h>
-#include <babeltrace/ref.h>
-#include <babeltrace/ctf-ir/trace.h>
-#include <babeltrace/ctf-ir/stream-class.h>
-#include <babeltrace/ctf-ir/event.h>
-#include <babeltrace/ctf-ir/event-class.h>
-#include <babeltrace/ctf-ir/field-types.h>
+#include <babeltrace/babeltrace.h>
 #include <babeltrace/ctf-ir/field-types-internal.h>
-#include <babeltrace/ctf-ir/clock-class.h>
 
 #include "scanner.h"
 #include "parser.h"
 #include "ast.h"
+#include "decoder.h"
 
 /* Bit value (left shift) */
 #define _BV(_val)              (1 << (_val))
@@ -151,7 +146,7 @@ enum loglevel {
 #define _BT_LIST_FIRST_ENTRY(_ptr, _type, _member)     \
        bt_list_entry((_ptr)->next, _type, _member)
 
-#define _BT_CTF_FIELD_TYPE_INIT(_name) struct bt_ctf_field_type *_name = NULL;
+#define _BT_FIELD_TYPE_INIT(_name)     struct bt_field_type *_name = NULL;
 
 #define _BT_LOGE_DUP_ATTR(_node, _attr, _entity)                       \
        _BT_LOGE_LINENO((_node)->lineno,                                \
@@ -176,7 +171,7 @@ struct ctx_decl_scope {
        /*
         * Alias name to field type.
         *
-        * GQuark -> struct bt_ctf_field_type *
+        * GQuark -> struct bt_field_type *
         */
        GHashTable *decl_map;
 
@@ -189,7 +184,7 @@ struct ctx_decl_scope {
  */
 struct ctx {
        /* Trace being filled (owned by this) */
-       struct bt_ctf_trace *trace;
+       struct bt_trace *trace;
 
        /* Current declaration scope (top of the stack) */
        struct ctx_decl_scope *current_scope;
@@ -200,14 +195,11 @@ struct ctx {
        /* 1 if this is an LTTng trace */
        bool is_lttng;
 
-       /* Offset (ns) to apply to clock classes on creation */
-       int64_t clock_class_offset_ns;
-
        /* Eventual name suffix of the trace to set */
        char *trace_name_suffix;
 
        /* Trace attributes */
-       enum bt_ctf_byte_order trace_bo;
+       enum bt_byte_order trace_bo;
        uint64_t trace_major;
        uint64_t trace_minor;
        unsigned char trace_uuid[BABELTRACE_UUID_LEN];
@@ -215,9 +207,12 @@ struct ctx {
        /*
         * Stream IDs to stream classes.
         *
-        * int64_t -> struct bt_ctf_stream_class *
+        * int64_t -> struct bt_stream_class *
         */
        GHashTable *stream_classes;
+
+       /* Config passed by the user */
+       struct ctf_metadata_decoder_config decoder_config;
 };
 
 /*
@@ -225,37 +220,6 @@ struct ctx {
  */
 struct ctf_visitor_generate_ir { };
 
-static
-const char *loglevel_str [] = {
-       [ LOGLEVEL_EMERG ] = "TRACE_EMERG",
-       [ LOGLEVEL_ALERT ] = "TRACE_ALERT",
-       [ LOGLEVEL_CRIT ] = "TRACE_CRIT",
-       [ LOGLEVEL_ERR ] = "TRACE_ERR",
-       [ LOGLEVEL_WARNING ] = "TRACE_WARNING",
-       [ LOGLEVEL_NOTICE ] = "TRACE_NOTICE",
-       [ LOGLEVEL_INFO ] = "TRACE_INFO",
-       [ LOGLEVEL_DEBUG_SYSTEM ] = "TRACE_DEBUG_SYSTEM",
-       [ LOGLEVEL_DEBUG_PROGRAM ] = "TRACE_DEBUG_PROGRAM",
-       [ LOGLEVEL_DEBUG_PROCESS ] = "TRACE_DEBUG_PROCESS",
-       [ LOGLEVEL_DEBUG_MODULE ] = "TRACE_DEBUG_MODULE",
-       [ LOGLEVEL_DEBUG_UNIT ] = "TRACE_DEBUG_UNIT",
-       [ LOGLEVEL_DEBUG_FUNCTION ] = "TRACE_DEBUG_FUNCTION",
-       [ LOGLEVEL_DEBUG_LINE ] = "TRACE_DEBUG_LINE",
-       [ LOGLEVEL_DEBUG ] = "TRACE_DEBUG",
-};
-
-static
-const char *print_loglevel(int64_t value)
-{
-       if (value < 0) {
-               return NULL;
-       }
-       if (value >= _NR_LOGLEVELS) {
-               return "<<UNKNOWN>>";
-       }
-       return loglevel_str[value];
-}
-
 /**
  * Creates a new declaration scope.
  *
@@ -274,7 +238,7 @@ struct ctx_decl_scope *ctx_decl_scope_create(struct ctx_decl_scope *par_scope)
        }
 
        scope->decl_map = g_hash_table_new_full(g_direct_hash, g_direct_equal,
-               NULL, (GDestroyNotify) bt_ctf_field_type_put);
+               NULL, (GDestroyNotify) bt_put);
        scope->parent_scope = par_scope;
 
 end:
@@ -341,13 +305,13 @@ end:
  * @returns            Declaration, or NULL if not found
  */
 static
-struct bt_ctf_field_type *ctx_decl_scope_lookup_prefix_alias(
+struct bt_field_type *ctx_decl_scope_lookup_prefix_alias(
        struct ctx_decl_scope *scope, char prefix,
        const char *name, int levels)
 {
        GQuark qname = 0;
        int cur_levels = 0;
-       _BT_CTF_FIELD_TYPE_INIT(decl);
+       _BT_FIELD_TYPE_INIT(decl);
        struct ctx_decl_scope *cur_scope = scope;
 
        assert(scope);
@@ -389,7 +353,7 @@ error:
  * @returns            Declaration, or NULL if not found
  */
 static
-struct bt_ctf_field_type *ctx_decl_scope_lookup_alias(
+struct bt_field_type *ctx_decl_scope_lookup_alias(
        struct ctx_decl_scope *scope, const char *name, int levels)
 {
        return ctx_decl_scope_lookup_prefix_alias(scope, _PREFIX_ALIAS,
@@ -405,7 +369,7 @@ struct bt_ctf_field_type *ctx_decl_scope_lookup_alias(
  * @returns            Declaration, or NULL if not found
  */
 static
-struct bt_ctf_field_type *ctx_decl_scope_lookup_enum(
+struct bt_field_type *ctx_decl_scope_lookup_enum(
        struct ctx_decl_scope *scope, const char *name, int levels)
 {
        return ctx_decl_scope_lookup_prefix_alias(scope, _PREFIX_ENUM,
@@ -421,7 +385,7 @@ struct bt_ctf_field_type *ctx_decl_scope_lookup_enum(
  * @returns            Declaration, or NULL if not found
  */
 static
-struct bt_ctf_field_type *ctx_decl_scope_lookup_struct(
+struct bt_field_type *ctx_decl_scope_lookup_struct(
        struct ctx_decl_scope *scope, const char *name, int levels)
 {
        return ctx_decl_scope_lookup_prefix_alias(scope, _PREFIX_STRUCT,
@@ -437,7 +401,7 @@ struct bt_ctf_field_type *ctx_decl_scope_lookup_struct(
  * @returns            Declaration, or NULL if not found
  */
 static
-struct bt_ctf_field_type *ctx_decl_scope_lookup_variant(
+struct bt_field_type *ctx_decl_scope_lookup_variant(
        struct ctx_decl_scope *scope, const char *name, int levels)
 {
        return ctx_decl_scope_lookup_prefix_alias(scope, _PREFIX_VARIANT,
@@ -455,11 +419,11 @@ struct bt_ctf_field_type *ctx_decl_scope_lookup_variant(
  */
 static
 int ctx_decl_scope_register_prefix_alias(struct ctx_decl_scope *scope,
-       char prefix, const char *name, struct bt_ctf_field_type *decl)
+       char prefix, const char *name, struct bt_field_type *decl)
 {
        int ret = 0;
        GQuark qname = 0;
-       _BT_CTF_FIELD_TYPE_INIT(edecl);
+       _BT_FIELD_TYPE_INIT(edecl);
 
        assert(scope);
        assert(name);
@@ -500,7 +464,7 @@ error:
  */
 static
 int ctx_decl_scope_register_alias(struct ctx_decl_scope *scope,
-       const char *name, struct bt_ctf_field_type *decl)
+       const char *name, struct bt_field_type *decl)
 {
        return ctx_decl_scope_register_prefix_alias(scope, _PREFIX_ALIAS,
                name, decl);
@@ -516,7 +480,7 @@ int ctx_decl_scope_register_alias(struct ctx_decl_scope *scope,
  */
 static
 int ctx_decl_scope_register_enum(struct ctx_decl_scope *scope,
-       const char *name, struct bt_ctf_field_type *decl)
+       const char *name, struct bt_field_type *decl)
 {
        return ctx_decl_scope_register_prefix_alias(scope, _PREFIX_ENUM,
                name, decl);
@@ -532,7 +496,7 @@ int ctx_decl_scope_register_enum(struct ctx_decl_scope *scope,
  */
 static
 int ctx_decl_scope_register_struct(struct ctx_decl_scope *scope,
-       const char *name, struct bt_ctf_field_type *decl)
+       const char *name, struct bt_field_type *decl)
 {
        return ctx_decl_scope_register_prefix_alias(scope, _PREFIX_STRUCT,
                name, decl);
@@ -548,7 +512,7 @@ int ctx_decl_scope_register_struct(struct ctx_decl_scope *scope,
  */
 static
 int ctx_decl_scope_register_variant(struct ctx_decl_scope *scope,
-       const char *name, struct bt_ctf_field_type *decl)
+       const char *name, struct bt_field_type *decl)
 {
        return ctx_decl_scope_register_prefix_alias(scope, _PREFIX_VARIANT,
                name, decl);
@@ -600,12 +564,15 @@ end:
  * @returns    New visitor context, or NULL on error
  */
 static
-struct ctx *ctx_create(struct bt_ctf_trace *trace,
-               int64_t clock_class_offset_ns, const char *trace_name_suffix)
+struct ctx *ctx_create(struct bt_trace *trace,
+               const struct ctf_metadata_decoder_config *decoder_config,
+               const char *trace_name_suffix)
 {
        struct ctx *ctx = NULL;
        struct ctx_decl_scope *scope = NULL;
 
+       assert(decoder_config);
+
        ctx = g_new0(struct ctx, 1);
        if (!ctx) {
                BT_LOGE_STR("Failed to allocate one visitor context.");
@@ -619,8 +586,8 @@ struct ctx *ctx_create(struct bt_ctf_trace *trace,
                goto error;
        }
 
-       ctx->stream_classes = g_hash_table_new_full(g_direct_hash,
-               g_direct_equal, NULL, (GDestroyNotify) bt_put);
+       ctx->stream_classes = g_hash_table_new_full(g_int64_hash,
+               g_int64_equal, g_free, (GDestroyNotify) bt_put);
        if (!ctx->stream_classes) {
                BT_LOGE_STR("Failed to allocate a GHashTable.");
                goto error;
@@ -637,8 +604,8 @@ struct ctx *ctx_create(struct bt_ctf_trace *trace,
        ctx->trace = trace;
        ctx->current_scope = scope;
        scope = NULL;
-       ctx->trace_bo = BT_CTF_BYTE_ORDER_NATIVE;
-       ctx->clock_class_offset_ns = clock_class_offset_ns;
+       ctx->trace_bo = BT_BYTE_ORDER_NATIVE;
+       ctx->decoder_config = *decoder_config;
        return ctx;
 
 error:
@@ -695,7 +662,62 @@ end:
 
 static
 int visit_type_specifier_list(struct ctx *ctx, struct ctf_node *ts_list,
-       struct bt_ctf_field_type **decl);
+       struct bt_field_type **decl);
+
+static
+char *remove_underscores_from_field_ref(const char *field_ref)
+{
+       const char *in_ch;
+       char *out_ch;
+       char *ret;
+       enum {
+               UNDERSCORE_REMOVE_STATE_REMOVE_NEXT_UNDERSCORE,
+               UNDERSCORE_REMOVE_STATE_DO_NOT_REMOVE_NEXT_UNDERSCORE,
+       } state = UNDERSCORE_REMOVE_STATE_REMOVE_NEXT_UNDERSCORE;
+
+       assert(field_ref);
+       ret = calloc(strlen(field_ref) + 1, 1);
+       if (!ret) {
+               BT_LOGE("Failed to allocate a string: size=%zu",
+                       strlen(field_ref) + 1);
+               goto end;
+       }
+
+       in_ch = field_ref;
+       out_ch = ret;
+
+       while (*in_ch != '\0') {
+               switch (*in_ch) {
+               case ' ':
+               case '\t':
+                       /* Remove whitespace */
+                       in_ch++;
+                       continue;
+               case '_':
+                       if (state == UNDERSCORE_REMOVE_STATE_REMOVE_NEXT_UNDERSCORE) {
+                               in_ch++;
+                               state = UNDERSCORE_REMOVE_STATE_DO_NOT_REMOVE_NEXT_UNDERSCORE;
+                               continue;
+                       }
+
+                       goto copy;
+               case '.':
+                       state = UNDERSCORE_REMOVE_STATE_REMOVE_NEXT_UNDERSCORE;
+                       goto copy;
+               default:
+                       state = UNDERSCORE_REMOVE_STATE_DO_NOT_REMOVE_NEXT_UNDERSCORE;
+                       goto copy;
+               }
+
+copy:
+               *out_ch = *in_ch;
+               in_ch++;
+               out_ch++;
+       }
+
+end:
+       return ret;
+}
 
 static
 int is_unary_string(struct bt_list_head *head)
@@ -909,7 +931,6 @@ int get_unary_signed(struct bt_list_head *head, int64_t *value)
                int uexpr_type = node->u.unary_expression.type;
                int uexpr_link = node->u.unary_expression.link;
                int cond = node->type != NODE_UNARY_EXPRESSION ||
-                       (uexpr_type != UNARY_UNSIGNED_CONSTANT) ||
                        (uexpr_type != UNARY_UNSIGNED_CONSTANT &&
                                uexpr_type != UNARY_SIGNED_CONSTANT) ||
                        uexpr_link != UNARY_LINK_UNKNOWN || i != 0;
@@ -918,7 +939,7 @@ int get_unary_signed(struct bt_list_head *head, int64_t *value)
                        goto end;
                }
 
-               switch (node->u.unary_expression.type) {
+               switch (uexpr_type) {
                case UNARY_UNSIGNED_CONSTANT:
                        *value = (int64_t)
                                node->u.unary_expression.u.unsigned_constant;
@@ -1020,10 +1041,10 @@ end:
 }
 
 static
-enum bt_ctf_byte_order byte_order_from_unary_expr(struct ctf_node *unary_expr)
+enum bt_byte_order byte_order_from_unary_expr(struct ctf_node *unary_expr)
 {
        const char *str;
-       enum bt_ctf_byte_order bo = BT_CTF_BYTE_ORDER_UNKNOWN;
+       enum bt_byte_order bo = BT_BYTE_ORDER_UNKNOWN;
 
        if (unary_expr->u.unary_expression.type != UNARY_STRING) {
                _BT_LOGE_NODE(unary_expr,
@@ -1034,11 +1055,11 @@ enum bt_ctf_byte_order byte_order_from_unary_expr(struct ctf_node *unary_expr)
        str = unary_expr->u.unary_expression.u.string;
 
        if (!strcmp(str, "be") || !strcmp(str, "network")) {
-               bo = BT_CTF_BYTE_ORDER_BIG_ENDIAN;
+               bo = BT_BYTE_ORDER_BIG_ENDIAN;
        } else if (!strcmp(str, "le")) {
-               bo = BT_CTF_BYTE_ORDER_LITTLE_ENDIAN;
+               bo = BT_BYTE_ORDER_LITTLE_ENDIAN;
        } else if (!strcmp(str, "native")) {
-               bo = BT_CTF_BYTE_ORDER_NATIVE;
+               bo = BT_BYTE_ORDER_NATIVE;
        } else {
                _BT_LOGE_NODE(unary_expr,
                        "Unexpected \"byte_order\" attribute value: "
@@ -1052,13 +1073,13 @@ end:
 }
 
 static
-enum bt_ctf_byte_order get_real_byte_order(struct ctx *ctx,
+enum bt_byte_order get_real_byte_order(struct ctx *ctx,
        struct ctf_node *uexpr)
 {
-       enum bt_ctf_byte_order bo = byte_order_from_unary_expr(uexpr);
+       enum bt_byte_order bo = byte_order_from_unary_expr(uexpr);
 
-       if (bo == BT_CTF_BYTE_ORDER_NATIVE) {
-               bo = bt_ctf_trace_get_native_byte_order(ctx->trace);
+       if (bo == BT_BYTE_ORDER_NATIVE) {
+               bo = bt_trace_get_native_byte_order(ctx->trace);
        }
 
        return bo;
@@ -1067,7 +1088,7 @@ enum bt_ctf_byte_order get_real_byte_order(struct ctx *ctx,
 static
 int is_align_valid(uint64_t align)
 {
-       return (align != 0) && !(align & (align - 1));
+       return (align != 0) && !(align & (align - 1ULL));
 }
 
 static
@@ -1253,8 +1274,8 @@ end:
 static
 int visit_type_declarator(struct ctx *ctx, struct ctf_node *type_specifier_list,
        GQuark *field_name, struct ctf_node *node_type_declarator,
-       struct bt_ctf_field_type **field_decl,
-       struct bt_ctf_field_type *nested_decl)
+       struct bt_field_type **field_decl,
+       struct bt_field_type *nested_decl)
 {
        /*
         * During this whole function, nested_decl is always OURS,
@@ -1293,7 +1314,7 @@ int visit_type_declarator(struct ctx *ctx, struct ctf_node *type_specifier_list,
 
                if (node_type_declarator && !bt_list_empty(pointers)) {
                        GQuark qalias;
-                       _BT_CTF_FIELD_TYPE_INIT(nested_decl_copy);
+                       _BT_FIELD_TYPE_INIT(nested_decl_copy);
 
                        /*
                         * If we have a pointer declarator, it HAS to
@@ -1313,7 +1334,7 @@ int visit_type_declarator(struct ctx *ctx, struct ctf_node *type_specifier_list,
                        }
 
                        /* Make a copy of it */
-                       nested_decl_copy = bt_ctf_field_type_copy(nested_decl);
+                       nested_decl_copy = bt_field_type_copy(nested_decl);
                        BT_PUT(nested_decl);
                        if (!nested_decl_copy) {
                                _BT_LOGE_NODE(node_type_declarator,
@@ -1325,10 +1346,10 @@ int visit_type_declarator(struct ctx *ctx, struct ctf_node *type_specifier_list,
                        BT_MOVE(nested_decl, nested_decl_copy);
 
                        /* Force integer's base to 16 since it's a pointer */
-                       if (bt_ctf_field_type_is_integer(nested_decl)) {
-                               ret = bt_ctf_field_type_integer_set_base(
+                       if (bt_field_type_is_integer(nested_decl)) {
+                               ret = bt_field_type_integer_set_base(
                                        nested_decl,
-                                       BT_CTF_INTEGER_BASE_HEXADECIMAL);
+                                       BT_INTEGER_BASE_HEXADECIMAL);
                                assert(ret == 0);
                        }
                } else {
@@ -1353,6 +1374,10 @@ int visit_type_declarator(struct ctx *ctx, struct ctf_node *type_specifier_list,
                        const char *id =
                                node_type_declarator->u.type_declarator.u.id;
 
+                       if (id[0] == '_') {
+                               id++;
+                       }
+
                        *field_name = g_quark_from_string(id);
                } else {
                        *field_name = 0;
@@ -1362,8 +1387,8 @@ int visit_type_declarator(struct ctx *ctx, struct ctf_node *type_specifier_list,
                goto end;
        } else {
                struct ctf_node *first;
-               _BT_CTF_FIELD_TYPE_INIT(decl);
-               _BT_CTF_FIELD_TYPE_INIT(outer_field_decl);
+               _BT_FIELD_TYPE_INIT(decl);
+               _BT_FIELD_TYPE_INIT(outer_field_decl);
                struct bt_list_head *length =
                        &node_type_declarator->
                                u.type_declarator.u.nested.length;
@@ -1389,10 +1414,10 @@ int visit_type_declarator(struct ctx *ctx, struct ctf_node *type_specifier_list,
                case UNARY_UNSIGNED_CONSTANT:
                {
                        size_t len;
-                       _BT_CTF_FIELD_TYPE_INIT(array_decl);
+                       _BT_FIELD_TYPE_INIT(array_decl);
 
                        len = first->u.unary_expression.u.unsigned_constant;
-                       array_decl = bt_ctf_field_type_array_create(nested_decl,
+                       array_decl = bt_field_type_array_create(nested_decl,
                                len);
                        BT_PUT(nested_decl);
                        if (!array_decl) {
@@ -1408,8 +1433,9 @@ int visit_type_declarator(struct ctx *ctx, struct ctf_node *type_specifier_list,
                case UNARY_STRING:
                {
                        /* Lookup unsigned integer definition, create seq. */
-                       _BT_CTF_FIELD_TYPE_INIT(seq_decl);
+                       _BT_FIELD_TYPE_INIT(seq_decl);
                        char *length_name = concatenate_unary_strings(length);
+                       char *length_name_no_underscore;
 
                        if (!length_name) {
                                _BT_LOGE_NODE(node_type_declarator,
@@ -1418,8 +1444,16 @@ int visit_type_declarator(struct ctx *ctx, struct ctf_node *type_specifier_list,
                                goto error;
                        }
 
-                       seq_decl = bt_ctf_field_type_sequence_create(
-                               nested_decl, length_name);
+                       length_name_no_underscore =
+                               remove_underscores_from_field_ref(length_name);
+                       if (!length_name_no_underscore) {
+                               /* remove_underscores_from_field_ref() logs errors */
+                               ret = -EINVAL;
+                               goto error;
+                       }
+                       seq_decl = bt_field_type_sequence_create(
+                               nested_decl, length_name_no_underscore);
+                       free(length_name_no_underscore);
                        g_free(length_name);
                        BT_PUT(nested_decl);
                        if (!seq_decl) {
@@ -1479,19 +1513,19 @@ error:
 
 static
 int visit_struct_decl_field(struct ctx *ctx,
-       struct bt_ctf_field_type *struct_decl,
+       struct bt_field_type *struct_decl,
        struct ctf_node *type_specifier_list,
        struct bt_list_head *type_declarators)
 {
        int ret = 0;
        struct ctf_node *iter;
-       _BT_CTF_FIELD_TYPE_INIT(field_decl);
+       _BT_FIELD_TYPE_INIT(field_decl);
 
        bt_list_for_each_entry(iter, type_declarators, siblings) {
                field_decl = NULL;
                GQuark qfield_name;
                const char *field_name;
-               _BT_CTF_FIELD_TYPE_INIT(efield_decl);
+               _BT_FIELD_TYPE_INIT(efield_decl);
 
                ret = visit_type_declarator(ctx, type_specifier_list,
                        &qfield_name, iter, &field_decl, NULL);
@@ -1507,7 +1541,7 @@ int visit_struct_decl_field(struct ctx *ctx,
 
                /* Check if field with same name already exists */
                efield_decl =
-                       bt_ctf_field_type_structure_get_field_type_by_name(
+                       bt_field_type_structure_get_field_type_by_name(
                                struct_decl, field_name);
                if (efield_decl) {
                        BT_PUT(efield_decl);
@@ -1519,7 +1553,7 @@ int visit_struct_decl_field(struct ctx *ctx,
                }
 
                /* Add field to structure */
-               ret = bt_ctf_field_type_structure_add_field(struct_decl,
+               ret = bt_field_type_structure_add_field(struct_decl,
                        field_decl, field_name);
                BT_PUT(field_decl);
                if (ret) {
@@ -1541,19 +1575,19 @@ error:
 
 static
 int visit_variant_decl_field(struct ctx *ctx,
-       struct bt_ctf_field_type *variant_decl,
+       struct bt_field_type *variant_decl,
        struct ctf_node *type_specifier_list,
        struct bt_list_head *type_declarators)
 {
        int ret = 0;
        struct ctf_node *iter;
-       _BT_CTF_FIELD_TYPE_INIT(field_decl);
+       _BT_FIELD_TYPE_INIT(field_decl);
 
        bt_list_for_each_entry(iter, type_declarators, siblings) {
                field_decl = NULL;
                GQuark qfield_name;
                const char *field_name;
-               _BT_CTF_FIELD_TYPE_INIT(efield_decl);
+               _BT_FIELD_TYPE_INIT(efield_decl);
 
                ret = visit_type_declarator(ctx, type_specifier_list,
                        &qfield_name, iter, &field_decl, NULL);
@@ -1569,7 +1603,7 @@ int visit_variant_decl_field(struct ctx *ctx,
 
                /* Check if field with same name already exists */
                efield_decl =
-                       bt_ctf_field_type_variant_get_field_type_by_name(
+                       bt_field_type_variant_get_field_type_by_name(
                                variant_decl, field_name);
                if (efield_decl) {
                        BT_PUT(efield_decl);
@@ -1581,7 +1615,7 @@ int visit_variant_decl_field(struct ctx *ctx,
                }
 
                /* Add field to structure */
-               ret = bt_ctf_field_type_variant_add_field(variant_decl,
+               ret = bt_field_type_variant_add_field(variant_decl,
                        field_decl, field_name);
                BT_PUT(field_decl);
                if (ret) {
@@ -1608,7 +1642,7 @@ int visit_typedef(struct ctx *ctx, struct ctf_node *type_specifier_list,
        int ret = 0;
        GQuark qidentifier;
        struct ctf_node *iter;
-       _BT_CTF_FIELD_TYPE_INIT(type_decl);
+       _BT_FIELD_TYPE_INIT(type_decl);
 
        bt_list_for_each_entry(iter, type_declarators, siblings) {
                ret = visit_type_declarator(ctx, type_specifier_list,
@@ -1621,8 +1655,8 @@ int visit_typedef(struct ctx *ctx, struct ctf_node *type_specifier_list,
                }
 
                /* Do not allow typedef and typealias of untagged variants */
-               if (bt_ctf_field_type_is_variant(type_decl)) {
-                       if (bt_ctf_field_type_variant_get_tag_name(type_decl)) {
+               if (bt_field_type_is_variant(type_decl)) {
+                       if (bt_field_type_variant_get_tag_name(type_decl)) {
                                _BT_LOGE_NODE(iter,
                                        "Type definition of untagged variant field type is not allowed.");
                                ret = -EPERM;
@@ -1654,7 +1688,7 @@ int visit_typealias(struct ctx *ctx, struct ctf_node *target,
        GQuark qalias;
        struct ctf_node *node;
        GQuark qdummy_field_name;
-       _BT_CTF_FIELD_TYPE_INIT(type_decl);
+       _BT_FIELD_TYPE_INIT(type_decl);
 
        /* Create target type declaration */
        if (bt_list_empty(&target->u.typealias_target.type_declarators)) {
@@ -1676,9 +1710,9 @@ int visit_typealias(struct ctx *ctx, struct ctf_node *target,
        }
 
        /* Do not allow typedef and typealias of untagged variants */
-       if (bt_ctf_field_type_is_variant(type_decl)) {
-               if (bt_ctf_field_type_variant_get_tag_name(type_decl)) {
-                       _BT_LOGE_NODE(node,
+       if (bt_field_type_is_variant(type_decl)) {
+               if (bt_field_type_variant_get_tag_name(type_decl)) {
+                       _BT_LOGE_NODE(target,
                                "Type definition of untagged variant field type is not allowed.");
                        ret = -EPERM;
                        goto end;
@@ -1690,7 +1724,7 @@ int visit_typealias(struct ctx *ctx, struct ctf_node *target,
         * abstract or not (if it has an identifier). Check it here.
         */
        if (qdummy_field_name != 0) {
-               _BT_LOGE_NODE(node,
+               _BT_LOGE_NODE(target,
                        "Expecting empty identifier: id=\"%s\"",
                        g_quark_to_string(qdummy_field_name));
                ret = -EINVAL;
@@ -1719,7 +1753,7 @@ end:
 
 static
 int visit_struct_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
-       struct bt_ctf_field_type *struct_decl)
+       struct bt_field_type *struct_decl)
 {
        int ret = 0;
 
@@ -1769,7 +1803,7 @@ end:
 
 static
 int visit_variant_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
-       struct bt_ctf_field_type *variant_decl)
+       struct bt_field_type *variant_decl)
 {
        int ret = 0;
 
@@ -1822,7 +1856,7 @@ static
 int visit_struct_decl(struct ctx *ctx, const char *name,
        struct bt_list_head *decl_list, int has_body,
        struct bt_list_head *min_align,
-       struct bt_ctf_field_type **struct_decl)
+       struct bt_field_type **struct_decl)
 {
        int ret = 0;
 
@@ -1830,7 +1864,7 @@ int visit_struct_decl(struct ctx *ctx, const char *name,
 
        /* For named struct (without body), lookup in declaration scope */
        if (!has_body) {
-               _BT_CTF_FIELD_TYPE_INIT(struct_decl_copy);
+               _BT_FIELD_TYPE_INIT(struct_decl_copy);
 
                if (!name) {
                        BT_LOGE_STR("Bodyless structure field type: missing name.");
@@ -1848,7 +1882,7 @@ int visit_struct_decl(struct ctx *ctx, const char *name,
                }
 
                /* Make a copy of it */
-               struct_decl_copy = bt_ctf_field_type_copy(*struct_decl);
+               struct_decl_copy = bt_field_type_copy(*struct_decl);
                if (!struct_decl_copy) {
                        BT_LOGE_STR("Cannot create copy of structure field type.");
                        ret = -EINVAL;
@@ -1861,7 +1895,7 @@ int visit_struct_decl(struct ctx *ctx, const char *name,
                uint64_t min_align_value = 0;
 
                if (name) {
-                       _BT_CTF_FIELD_TYPE_INIT(estruct_decl);
+                       _BT_FIELD_TYPE_INIT(estruct_decl);
 
                        estruct_decl = ctx_decl_scope_lookup_struct(
                                ctx->current_scope, name, 1);
@@ -1883,7 +1917,7 @@ int visit_struct_decl(struct ctx *ctx, const char *name,
                        }
                }
 
-               *struct_decl = bt_ctf_field_type_structure_create();
+               *struct_decl = bt_field_type_structure_create();
                if (!*struct_decl) {
                        BT_LOGE_STR("Cannot create empty structure field type.");
                        ret = -ENOMEM;
@@ -1891,7 +1925,7 @@ int visit_struct_decl(struct ctx *ctx, const char *name,
                }
 
                if (min_align_value != 0) {
-                       ret = bt_ctf_field_type_set_alignment(*struct_decl,
+                       ret = bt_field_type_set_alignment(*struct_decl,
                                        min_align_value);
                        if (ret) {
                                BT_LOGE("Cannot set structure field type's alignment: "
@@ -1942,16 +1976,16 @@ error:
 static
 int visit_variant_decl(struct ctx *ctx, const char *name,
        const char *tag, struct bt_list_head *decl_list,
-       int has_body, struct bt_ctf_field_type **variant_decl)
+       int has_body, struct bt_field_type **variant_decl)
 {
        int ret = 0;
-       _BT_CTF_FIELD_TYPE_INIT(untagged_variant_decl);
+       _BT_FIELD_TYPE_INIT(untagged_variant_decl);
 
        *variant_decl = NULL;
 
        /* For named variant (without body), lookup in declaration scope */
        if (!has_body) {
-               _BT_CTF_FIELD_TYPE_INIT(variant_decl_copy);
+               _BT_FIELD_TYPE_INIT(variant_decl_copy);
 
                if (!name) {
                        BT_LOGE_STR("Bodyless variant field type: missing name.");
@@ -1970,7 +2004,7 @@ int visit_variant_decl(struct ctx *ctx, const char *name,
                }
 
                /* Make a copy of it */
-               variant_decl_copy = bt_ctf_field_type_copy(
+               variant_decl_copy = bt_field_type_copy(
                        untagged_variant_decl);
                if (!variant_decl_copy) {
                        BT_LOGE_STR("Cannot create copy of variant field type.");
@@ -1983,7 +2017,7 @@ int visit_variant_decl(struct ctx *ctx, const char *name,
                struct ctf_node *entry_node;
 
                if (name) {
-                       struct bt_ctf_field_type *evariant_decl =
+                       struct bt_field_type *evariant_decl =
                                ctx_decl_scope_lookup_struct(ctx->current_scope,
                                        name, 1);
 
@@ -1996,7 +2030,7 @@ int visit_variant_decl(struct ctx *ctx, const char *name,
                        }
                }
 
-               untagged_variant_decl = bt_ctf_field_type_variant_create(NULL,
+               untagged_variant_decl = bt_field_type_variant_create(NULL,
                        NULL);
                if (!untagged_variant_decl) {
                        BT_LOGE_STR("Cannot create empty variant field type.");
@@ -2047,8 +2081,17 @@ int visit_variant_decl(struct ctx *ctx, const char *name,
                 * At this point, we have a fresh untagged variant; nobody
                 * else owns it. Set its tag now.
                 */
-               ret = bt_ctf_field_type_variant_set_tag_name(
-                       untagged_variant_decl, tag);
+               char *tag_no_underscore =
+                       remove_underscores_from_field_ref(tag);
+
+               if (!tag_no_underscore) {
+                       /* remove_underscores_from_field_ref() logs errors */
+                       goto error;
+               }
+
+               ret = bt_field_type_variant_set_tag_name(
+                       untagged_variant_decl, tag_no_underscore);
+               free(tag_no_underscore);
                if (ret) {
                        BT_LOGE("Cannot set variant field type's tag name: "
                                "tag-name=\"%s\"", tag);
@@ -2072,7 +2115,7 @@ error:
 
 static
 int visit_enum_decl_entry(struct ctx *ctx, struct ctf_node *enumerator,
-       struct bt_ctf_field_type *enum_decl, int64_t *last, int is_signed)
+       struct bt_field_type *enum_decl, int64_t *last, bt_bool is_signed)
 {
        int ret = 0;
        int nr_vals = 0;
@@ -2142,7 +2185,7 @@ int visit_enum_decl_entry(struct ctx *ctx, struct ctf_node *enumerator,
                ret = bt_ctf_field_type_enumeration_add_mapping(enum_decl, label,
                        start, end);
        } else {
-               ret = bt_ctf_field_type_enumeration_add_mapping_unsigned(enum_decl,
+               ret = bt_field_type_enumeration_add_mapping_unsigned(enum_decl,
                        label, (uint64_t) start, (uint64_t) end);
        }
        if (ret) {
@@ -2166,17 +2209,17 @@ int visit_enum_decl(struct ctx *ctx, const char *name,
        struct ctf_node *container_type,
        struct bt_list_head *enumerator_list,
        int has_body,
-       struct bt_ctf_field_type **enum_decl)
+       struct bt_field_type **enum_decl)
 {
        int ret = 0;
        GQuark qdummy_id;
-       _BT_CTF_FIELD_TYPE_INIT(integer_decl);
+       _BT_FIELD_TYPE_INIT(integer_decl);
 
        *enum_decl = NULL;
 
        /* For named enum (without body), lookup in declaration scope */
        if (!has_body) {
-               _BT_CTF_FIELD_TYPE_INIT(enum_decl_copy);
+               _BT_FIELD_TYPE_INIT(enum_decl_copy);
 
                if (!name) {
                        BT_LOGE_STR("Bodyless enumeration field type: missing name.");
@@ -2194,7 +2237,7 @@ int visit_enum_decl(struct ctx *ctx, const char *name,
                }
 
                /* Make a copy of it */
-               enum_decl_copy = bt_ctf_field_type_copy(*enum_decl);
+               enum_decl_copy = bt_field_type_copy(*enum_decl);
                if (!enum_decl_copy) {
                        BT_LOGE_STR("Cannot create copy of enumeration field type.");
                        ret = -EINVAL;
@@ -2208,7 +2251,7 @@ int visit_enum_decl(struct ctx *ctx, const char *name,
                int64_t last_value = 0;
 
                if (name) {
-                       _BT_CTF_FIELD_TYPE_INIT(eenum_decl);
+                       _BT_FIELD_TYPE_INIT(eenum_decl);
 
                        eenum_decl = ctx_decl_scope_lookup_enum(
                                ctx->current_scope, name, 1);
@@ -2241,16 +2284,16 @@ int visit_enum_decl(struct ctx *ctx, const char *name,
 
                assert(integer_decl);
 
-               if (!bt_ctf_field_type_is_integer(integer_decl)) {
+               if (!bt_field_type_is_integer(integer_decl)) {
                        BT_LOGE("Container field type for enumeration field type is not an integer field type: "
                                "ft-id=%s",
-                               bt_ctf_field_type_id_string(
-                                       bt_ctf_field_type_get_type_id(integer_decl)));
+                               bt_field_type_id_string(
+                                       bt_field_type_get_type_id(integer_decl)));
                        ret = -EINVAL;
                        goto error;
                }
 
-               *enum_decl = bt_ctf_field_type_enumeration_create(integer_decl);
+               *enum_decl = bt_field_type_enumeration_create(integer_decl);
                if (!*enum_decl) {
                        BT_LOGE_STR("Cannot create enumeration field type.");
                        ret = -ENOMEM;
@@ -2260,7 +2303,7 @@ int visit_enum_decl(struct ctx *ctx, const char *name,
                bt_list_for_each_entry(iter, enumerator_list, siblings) {
                        ret = visit_enum_decl_entry(ctx, iter, *enum_decl,
                                &last_value,
-                               bt_ctf_field_type_integer_get_signed(integer_decl));
+                               bt_field_type_integer_is_signed(integer_decl));
                        if (ret) {
                                _BT_LOGE_NODE(iter,
                                        "Cannot visit enumeration field type entry: "
@@ -2294,11 +2337,11 @@ error:
 static
 int visit_type_specifier(struct ctx *ctx,
        struct ctf_node *type_specifier_list,
-       struct bt_ctf_field_type **decl)
+       struct bt_field_type **decl)
 {
        int ret = 0;
        GString *str = NULL;
-       _BT_CTF_FIELD_TYPE_INIT(decl_copy);
+       _BT_FIELD_TYPE_INIT(decl_copy);
 
        *decl = NULL;
        str = g_string_new("");
@@ -2318,7 +2361,7 @@ int visit_type_specifier(struct ctx *ctx,
        }
 
        /* Make a copy of the type declaration */
-       decl_copy = bt_ctf_field_type_copy(*decl);
+       decl_copy = bt_field_type_copy(*decl);
        if (!decl_copy) {
                _BT_LOGE_NODE(type_specifier_list,
                        "Cannot create field type copy.");
@@ -2345,18 +2388,18 @@ error:
 static
 int visit_integer_decl(struct ctx *ctx,
        struct bt_list_head *expressions,
-       struct bt_ctf_field_type **integer_decl)
+       struct bt_field_type **integer_decl)
 {
        int set = 0;
        int ret = 0;
-       int signedness = 0;
+       bt_bool signedness = 0;
        struct ctf_node *expression;
        uint64_t alignment = 0, size = 0;
-       struct bt_ctf_clock_class *mapped_clock = NULL;
-       enum bt_ctf_string_encoding encoding = BT_CTF_STRING_ENCODING_NONE;
-       enum bt_ctf_integer_base base = BT_CTF_INTEGER_BASE_DECIMAL;
-       enum bt_ctf_byte_order byte_order =
-               bt_ctf_trace_get_native_byte_order(ctx->trace);
+       struct bt_clock_class *mapped_clock = NULL;
+       enum bt_string_encoding encoding = BT_STRING_ENCODING_NONE;
+       enum bt_integer_base base = BT_INTEGER_BASE_DECIMAL;
+       enum bt_byte_order byte_order =
+               bt_trace_get_native_byte_order(ctx->trace);
 
        *integer_decl = NULL;
 
@@ -2405,7 +2448,7 @@ int visit_integer_decl(struct ctx *ctx,
                        }
 
                        byte_order = get_real_byte_order(ctx, right);
-                       if (byte_order == BT_CTF_BYTE_ORDER_UNKNOWN) {
+                       if (byte_order == BT_BYTE_ORDER_UNKNOWN) {
                                _BT_LOGE_NODE(right,
                                        "Invalid `byte_order` attribute in integer field type: "
                                        "ret=%d", ret);
@@ -2499,16 +2542,16 @@ int visit_integer_decl(struct ctx *ctx,
 
                                switch (constant) {
                                case 2:
-                                       base = BT_CTF_INTEGER_BASE_BINARY;
+                                       base = BT_INTEGER_BASE_BINARY;
                                        break;
                                case 8:
-                                       base = BT_CTF_INTEGER_BASE_OCTAL;
+                                       base = BT_INTEGER_BASE_OCTAL;
                                        break;
                                case 10:
-                                       base = BT_CTF_INTEGER_BASE_DECIMAL;
+                                       base = BT_INTEGER_BASE_DECIMAL;
                                        break;
                                case 16:
-                                       base = BT_CTF_INTEGER_BASE_HEXADECIMAL;
+                                       base = BT_INTEGER_BASE_HEXADECIMAL;
                                        break;
                                default:
                                        _BT_LOGE_NODE(right,
@@ -2536,20 +2579,20 @@ int visit_integer_decl(struct ctx *ctx,
                                                !strcmp(s_right, "d") ||
                                                !strcmp(s_right, "i") ||
                                                !strcmp(s_right, "u")) {
-                                       base = BT_CTF_INTEGER_BASE_DECIMAL;
+                                       base = BT_INTEGER_BASE_DECIMAL;
                                } else if (!strcmp(s_right, "hexadecimal") ||
                                                !strcmp(s_right, "hex") ||
                                                !strcmp(s_right, "x") ||
                                                !strcmp(s_right, "X") ||
                                                !strcmp(s_right, "p")) {
-                                       base = BT_CTF_INTEGER_BASE_HEXADECIMAL;
+                                       base = BT_INTEGER_BASE_HEXADECIMAL;
                                } else if (!strcmp(s_right, "octal") ||
                                                !strcmp(s_right, "oct") ||
                                                !strcmp(s_right, "o")) {
-                                       base = BT_CTF_INTEGER_BASE_OCTAL;
+                                       base = BT_INTEGER_BASE_OCTAL;
                                } else if (!strcmp(s_right, "binary") ||
                                                !strcmp(s_right, "b")) {
-                                       base = BT_CTF_INTEGER_BASE_BINARY;
+                                       base = BT_INTEGER_BASE_BINARY;
                                } else {
                                        _BT_LOGE_NODE(right,
                                                "Unexpected unary expression for integer field type's `base` attribute: "
@@ -2603,12 +2646,12 @@ int visit_integer_decl(struct ctx *ctx,
                                        !strcmp(s_right, "utf8") ||
                                        !strcmp(s_right, "utf-8") ||
                                        !strcmp(s_right, "UTF-8")) {
-                               encoding = BT_CTF_STRING_ENCODING_UTF8;
+                               encoding = BT_STRING_ENCODING_UTF8;
                        } else if (!strcmp(s_right, "ASCII") ||
                                        !strcmp(s_right, "ascii")) {
-                               encoding = BT_CTF_STRING_ENCODING_ASCII;
+                               encoding = BT_STRING_ENCODING_ASCII;
                        } else if (!strcmp(s_right, "none")) {
-                               encoding = BT_CTF_STRING_ENCODING_NONE;
+                               encoding = BT_STRING_ENCODING_NONE;
                        } else {
                                _BT_LOGE_NODE(right,
                                        "Invalid `encoding` attribute in integer field type: "
@@ -2662,7 +2705,7 @@ int visit_integer_decl(struct ctx *ctx,
                                continue;
                        }
 
-                       mapped_clock = bt_ctf_trace_get_clock_class_by_name(
+                       mapped_clock = bt_trace_get_clock_class_by_name(
                                ctx->trace, clock_name);
                        if (!mapped_clock) {
                                _BT_LOGE_NODE(right,
@@ -2698,23 +2741,23 @@ int visit_integer_decl(struct ctx *ctx,
                }
        }
 
-       *integer_decl = bt_ctf_field_type_integer_create((unsigned int) size);
+       *integer_decl = bt_field_type_integer_create((unsigned int) size);
        if (!*integer_decl) {
                BT_LOGE_STR("Cannot create integer field type.");
                ret = -ENOMEM;
                goto error;
        }
 
-       ret = bt_ctf_field_type_integer_set_signed(*integer_decl, signedness);
-       ret |= bt_ctf_field_type_integer_set_base(*integer_decl, base);
-       ret |= bt_ctf_field_type_integer_set_encoding(*integer_decl, encoding);
-       ret |= bt_ctf_field_type_set_alignment(*integer_decl,
+       ret = bt_field_type_integer_set_is_signed(*integer_decl, signedness);
+       ret |= bt_field_type_integer_set_base(*integer_decl, base);
+       ret |= bt_field_type_integer_set_encoding(*integer_decl, encoding);
+       ret |= bt_field_type_set_alignment(*integer_decl,
                (unsigned int) alignment);
-       ret |= bt_ctf_field_type_set_byte_order(*integer_decl, byte_order);
+       ret |= bt_field_type_set_byte_order(*integer_decl, byte_order);
 
        if (mapped_clock) {
                /* Move clock */
-               ret |= bt_ctf_field_type_integer_set_mapped_clock_class(
+               ret |= bt_field_type_integer_set_mapped_clock_class(
                        *integer_decl, mapped_clock);
                bt_put(mapped_clock);
                mapped_clock = NULL;
@@ -2741,14 +2784,14 @@ error:
 static
 int visit_floating_point_number_decl(struct ctx *ctx,
        struct bt_list_head *expressions,
-       struct bt_ctf_field_type **float_decl)
+       struct bt_field_type **float_decl)
 {
        int set = 0;
        int ret = 0;
        struct ctf_node *expression;
        uint64_t alignment = 1, exp_dig = 0, mant_dig = 0;
-       enum bt_ctf_byte_order byte_order =
-               bt_ctf_trace_get_native_byte_order(ctx->trace);
+       enum bt_byte_order byte_order =
+               bt_trace_get_native_byte_order(ctx->trace);
 
        *float_decl = NULL;
 
@@ -2778,7 +2821,7 @@ int visit_floating_point_number_decl(struct ctx *ctx,
                        }
 
                        byte_order = get_real_byte_order(ctx, right);
-                       if (byte_order == BT_CTF_BYTE_ORDER_UNKNOWN) {
+                       if (byte_order == BT_BYTE_ORDER_UNKNOWN) {
                                _BT_LOGE_NODE(right,
                                        "Invalid `byte_order` attribute in floating point number field type: "
                                        "ret=%d", ret);
@@ -2895,19 +2938,19 @@ int visit_floating_point_number_decl(struct ctx *ctx,
                }
        }
 
-       *float_decl = bt_ctf_field_type_floating_point_create();
+       *float_decl = bt_field_type_floating_point_create();
        if (!*float_decl) {
                BT_LOGE_STR("Cannot create floating point number field type.");
                ret = -ENOMEM;
                goto error;
        }
 
-       ret = bt_ctf_field_type_floating_point_set_exponent_digits(
+       ret = bt_field_type_floating_point_set_exponent_digits(
                *float_decl, exp_dig);
-       ret |= bt_ctf_field_type_floating_point_set_mantissa_digits(
+       ret |= bt_field_type_floating_point_set_mantissa_digits(
                *float_decl, mant_dig);
-       ret |= bt_ctf_field_type_set_byte_order(*float_decl, byte_order);
-       ret |= bt_ctf_field_type_set_alignment(*float_decl, alignment);
+       ret |= bt_field_type_set_byte_order(*float_decl, byte_order);
+       ret |= bt_field_type_set_alignment(*float_decl, alignment);
        if (ret) {
                BT_LOGE_STR("Cannot configure floating point number field type.");
                ret = -EINVAL;
@@ -2925,12 +2968,12 @@ error:
 static
 int visit_string_decl(struct ctx *ctx,
        struct bt_list_head *expressions,
-       struct bt_ctf_field_type **string_decl)
+       struct bt_field_type **string_decl)
 {
        int set = 0;
        int ret = 0;
        struct ctf_node *expression;
-       enum bt_ctf_string_encoding encoding = BT_CTF_STRING_ENCODING_UTF8;
+       enum bt_string_encoding encoding = BT_STRING_ENCODING_UTF8;
 
        *string_decl = NULL;
 
@@ -2982,12 +3025,12 @@ int visit_string_decl(struct ctx *ctx,
                                        !strcmp(s_right, "utf8") ||
                                        !strcmp(s_right, "utf-8") ||
                                        !strcmp(s_right, "UTF-8")) {
-                               encoding = BT_CTF_STRING_ENCODING_UTF8;
+                               encoding = BT_STRING_ENCODING_UTF8;
                        } else if (!strcmp(s_right, "ASCII") ||
                                        !strcmp(s_right, "ascii")) {
-                               encoding = BT_CTF_STRING_ENCODING_ASCII;
+                               encoding = BT_STRING_ENCODING_ASCII;
                        } else if (!strcmp(s_right, "none")) {
-                               encoding = BT_CTF_STRING_ENCODING_NONE;
+                               encoding = BT_STRING_ENCODING_NONE;
                        } else {
                                _BT_LOGE_NODE(right,
                                        "Invalid `encoding` attribute in string field type: "
@@ -3008,14 +3051,14 @@ int visit_string_decl(struct ctx *ctx,
                }
        }
 
-       *string_decl = bt_ctf_field_type_string_create();
+       *string_decl = bt_field_type_string_create();
        if (!*string_decl) {
                BT_LOGE_STR("Cannot create string field type.");
                ret = -ENOMEM;
                goto error;
        }
 
-       ret = bt_ctf_field_type_string_set_encoding(*string_decl, encoding);
+       ret = bt_field_type_string_set_encoding(*string_decl, encoding);
        if (ret) {
                BT_LOGE_STR("Cannot configure string field type.");
                ret = -EINVAL;
@@ -3033,7 +3076,7 @@ error:
 static
 int visit_type_specifier_list(struct ctx *ctx,
        struct ctf_node *ts_list,
-       struct bt_ctf_field_type **decl)
+       struct bt_field_type **decl)
 {
        int ret = 0;
        struct ctf_node *first, *node;
@@ -3156,12 +3199,12 @@ error:
 
 static
 int visit_event_decl_entry(struct ctx *ctx, struct ctf_node *node,
-       struct bt_ctf_event_class *event_class, int64_t *stream_id,
+       struct bt_event_class *event_class, int64_t *stream_id,
        int *set)
 {
        int ret = 0;
        char *left = NULL;
-       _BT_CTF_FIELD_TYPE_INIT(decl);
+       _BT_FIELD_TYPE_INIT(decl);
 
        switch (node->type) {
        case NODE_TYPEDEF:
@@ -3221,7 +3264,7 @@ int visit_event_decl_entry(struct ctx *ctx, struct ctf_node *node,
                                goto error;
                        }
 
-                       ret = bt_ctf_event_class_set_id(event_class, id);
+                       ret = bt_event_class_set_id(event_class, id);
                        if (ret) {
                                _BT_LOGE_NODE(node,
                                        "Cannot set event class's ID: "
@@ -3272,7 +3315,7 @@ int visit_event_decl_entry(struct ctx *ctx, struct ctf_node *node,
                        }
 
                        assert(decl);
-                       ret = bt_ctf_event_class_set_context_type(
+                       ret = bt_event_class_set_context_type(
                                event_class, decl);
                        BT_PUT(decl);
                        if (ret) {
@@ -3302,7 +3345,7 @@ int visit_event_decl_entry(struct ctx *ctx, struct ctf_node *node,
                        }
 
                        assert(decl);
-                       ret = bt_ctf_event_class_set_payload_type(
+                       ret = bt_event_class_set_payload_type(
                                event_class, decl);
                        BT_PUT(decl);
                        if (ret) {
@@ -3314,8 +3357,8 @@ int visit_event_decl_entry(struct ctx *ctx, struct ctf_node *node,
                        _SET(set, _EVENT_FIELDS_SET);
                } else if (!strcmp(left, "loglevel")) {
                        uint64_t loglevel_value;
-                       const char *loglevel_str;
-                       struct bt_value *value_obj, *str_obj;
+                       enum bt_event_class_log_level log_level =
+                               BT_EVENT_CLASS_LOG_LEVEL_UNSPECIFIED;
 
                        if (_IS_SET(set, _EVENT_LOGLEVEL_SET)) {
                                _BT_LOGE_DUP_ATTR(node, "loglevel",
@@ -3332,39 +3375,71 @@ int visit_event_decl_entry(struct ctx *ctx, struct ctf_node *node,
                                ret = -EINVAL;
                                goto error;
                        }
-                       value_obj = bt_value_integer_create_init(loglevel_value);
-                       if (!value_obj) {
-                               _BT_LOGE_NODE(node,
-                                       "Cannot create integer value object.");
-                               ret = -ENOMEM;
-                               goto error;
-                       }
-                       if (bt_ctf_event_class_set_attribute(event_class,
-                                       "loglevel", value_obj) != BT_VALUE_STATUS_OK) {
-                               _BT_LOGE_NODE(node,
-                                       "Cannot set event class's `loglevel` attribute.");
-                               ret = -EINVAL;
-                               bt_put(value_obj);
-                               goto error;
+
+                       switch (loglevel_value) {
+                       case 0:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_EMERGENCY;
+                               break;
+                       case 1:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_ALERT;
+                               break;
+                       case 2:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_CRITICAL;
+                               break;
+                       case 3:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_ERROR;
+                               break;
+                       case 4:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_WARNING;
+                               break;
+                       case 5:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_NOTICE;
+                               break;
+                       case 6:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_INFO;
+                               break;
+                       case 7:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_DEBUG_SYSTEM;
+                               break;
+                       case 8:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_DEBUG_PROGRAM;
+                               break;
+                       case 9:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_DEBUG_PROCESS;
+                               break;
+                       case 10:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_DEBUG_MODULE;
+                               break;
+                       case 11:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_DEBUG_UNIT;
+                               break;
+                       case 12:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_DEBUG_FUNCTION;
+                               break;
+                       case 13:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_DEBUG_LINE;
+                               break;
+                       case 14:
+                               log_level = BT_EVENT_CLASS_LOG_LEVEL_DEBUG;
+                               break;
+                       default:
+                               _BT_LOGW_NODE(node, "Not setting event class's log level because its value is unknown: "
+                                       "log-level=%" PRIu64, loglevel_value);
                        }
-                       loglevel_str = print_loglevel(loglevel_value);
-                       if (loglevel_str) {
-                               str_obj = bt_value_string_create_init(loglevel_str);
-                               if (bt_ctf_event_class_set_attribute(event_class,
-                                               "loglevel_string", str_obj) != BT_VALUE_STATUS_OK) {
+
+                       if (log_level != BT_EVENT_CLASS_LOG_LEVEL_UNSPECIFIED) {
+                               ret = bt_event_class_set_log_level(
+                                       event_class, log_level);
+                               if (ret) {
                                        _BT_LOGE_NODE(node,
-                                               "Cannot set event class's `loglevel_string` attribute.");
-                                       ret = -EINVAL;
-                                       bt_put(str_obj);
+                                               "Cannot set event class's log level.");
                                        goto error;
                                }
-                               bt_put(str_obj);
                        }
-                       bt_put(value_obj);
+
                        _SET(set, _EVENT_LOGLEVEL_SET);
                } else if (!strcmp(left, "model.emf.uri")) {
                        char *right;
-                       struct bt_value *str_obj;
 
                        if (_IS_SET(set, _EVENT_MODEL_EMF_URI_SET)) {
                                _BT_LOGE_DUP_ATTR(node, "model.emf.uri",
@@ -3382,16 +3457,19 @@ int visit_event_decl_entry(struct ctx *ctx, struct ctf_node *node,
                                goto error;
                        }
 
-                       str_obj = bt_value_string_create_init(right);
-                       if (bt_ctf_event_class_set_attribute(event_class,
-                                       "model.emf.uri", str_obj) != BT_VALUE_STATUS_OK) {
-                               _BT_LOGE_NODE(node,
-                                       "Cannot set event class's `model.emf.uri` attribute.");
-                               ret = -EINVAL;
-                               bt_put(str_obj);
-                               goto error;
+                       if (strlen(right) == 0) {
+                               _BT_LOGW_NODE(node,
+                                       "Not setting event class's EMF URI because it's empty.");
+                       } else {
+                               ret = bt_event_class_set_emf_uri(
+                                       event_class, right);
+                               if (ret) {
+                                       _BT_LOGE_NODE(node,
+                                               "Cannot set event class's EMF URI.");
+                                       goto error;
+                               }
                        }
-                       bt_put(str_obj);
+
                        g_free(right);
                        _SET(set, _EVENT_MODEL_EMF_URI_SET);
                } else {
@@ -3469,25 +3547,25 @@ error:
 
 static
 int reset_event_decl_types(struct ctx *ctx,
-       struct bt_ctf_event_class *event_class)
+       struct bt_event_class *event_class)
 {
        int ret = 0;
 
        /* Context type. */
-       ret = bt_ctf_event_class_set_context_type(event_class, NULL);
+       ret = bt_event_class_set_context_type(event_class, NULL);
        if (ret) {
                BT_LOGE("Cannot reset initial event class's context field type: "
                        "event-name=\"%s\"",
-                       bt_ctf_event_class_get_name(event_class));
+                       bt_event_class_get_name(event_class));
                goto end;
        }
 
        /* Event payload. */
-       ret = bt_ctf_event_class_set_payload_type(event_class, NULL);
+       ret = bt_event_class_set_payload_type(event_class, NULL);
        if (ret) {
                BT_LOGE("Cannot reset initial event class's payload field type: "
                        "event-name=\"%s\"",
-                       bt_ctf_event_class_get_name(event_class));
+                       bt_event_class_get_name(event_class));
                goto end;
        }
 end:
@@ -3496,26 +3574,26 @@ end:
 
 static
 int reset_stream_decl_types(struct ctx *ctx,
-       struct bt_ctf_stream_class *stream_class)
+       struct bt_stream_class *stream_class)
 {
        int ret = 0;
 
        /* Packet context. */
-       ret = bt_ctf_stream_class_set_packet_context_type(stream_class, NULL);
+       ret = bt_stream_class_set_packet_context_type(stream_class, NULL);
        if (ret) {
                BT_LOGE_STR("Cannot reset initial stream class's packet context field type.");
                goto end;
        }
 
        /* Event header. */
-       ret = bt_ctf_stream_class_set_event_header_type(stream_class, NULL);
+       ret = bt_stream_class_set_event_header_type(stream_class, NULL);
        if (ret) {
                BT_LOGE_STR("Cannot reset initial stream class's event header field type.");
                goto end;
        }
 
        /* Event context. */
-       ret = bt_ctf_stream_class_set_event_context_type(stream_class, NULL);
+       ret = bt_stream_class_set_event_context_type(stream_class, NULL);
        if (ret) {
                BT_LOGE_STR("Cannot reset initial stream class's event context field type.");
                goto end;
@@ -3525,12 +3603,12 @@ end:
 }
 
 static
-struct bt_ctf_stream_class *create_reset_stream_class(struct ctx *ctx)
+struct bt_stream_class *create_reset_stream_class(struct ctx *ctx)
 {
        int ret;
-       struct bt_ctf_stream_class *stream_class;
+       struct bt_stream_class *stream_class;
 
-       stream_class = bt_ctf_stream_class_create_empty(NULL);
+       stream_class = bt_stream_class_create_empty(NULL);
        if (!stream_class) {
                BT_LOGE_STR("Cannot create empty stream class.");
                goto error;
@@ -3562,9 +3640,9 @@ int visit_event_decl(struct ctx *ctx, struct ctf_node *node)
        struct ctf_node *iter;
        int64_t stream_id = -1;
        char *event_name = NULL;
-       struct bt_ctf_event_class *event_class = NULL;
-       struct bt_ctf_event_class *eevent_class;
-       struct bt_ctf_stream_class *stream_class = NULL;
+       struct bt_event_class *event_class = NULL;
+       struct bt_event_class *eevent_class;
+       struct bt_stream_class *stream_class = NULL;
        struct bt_list_head *decl_list = &node->u.event.declaration_list;
        bool pop_scope = false;
 
@@ -3581,7 +3659,7 @@ int visit_event_decl(struct ctx *ctx, struct ctf_node *node)
                goto error;
        }
 
-       event_class = bt_ctf_event_class_create(event_name);
+       event_class = bt_event_class_create(event_name);
 
        /*
         * Unset context and fields to override the default ones.
@@ -3614,10 +3692,11 @@ int visit_event_decl(struct ctx *ctx, struct ctf_node *node)
 
        if (!_IS_SET(&set, _EVENT_STREAM_ID_SET)) {
                GList *keys = NULL;
-               struct bt_ctf_stream_class *new_stream_class;
+               int64_t *new_stream_id;
+               struct bt_stream_class *new_stream_class;
                size_t stream_class_count =
                        g_hash_table_size(ctx->stream_classes) +
-                       bt_ctf_trace_get_stream_class_count(ctx->trace);
+                       bt_trace_get_stream_class_count(ctx->trace);
 
                /*
                 * Allow missing stream_id if there is only a single
@@ -3626,6 +3705,7 @@ int visit_event_decl(struct ctx *ctx, struct ctf_node *node)
                switch (stream_class_count) {
                case 0:
                        /* Create implicit stream class if there's none */
+                       stream_id = 0;
                        new_stream_class = create_reset_stream_class(ctx);
                        if (!new_stream_class) {
                                _BT_LOGE_NODE(node,
@@ -3634,7 +3714,8 @@ int visit_event_decl(struct ctx *ctx, struct ctf_node *node)
                                goto error;
                        }
 
-                       ret = bt_ctf_stream_class_set_id(new_stream_class, 0);
+                       ret = bt_stream_class_set_id(new_stream_class,
+                               stream_id);
                        if (ret) {
                                _BT_LOGE_NODE(node,
                                        "Cannot set stream class's ID: "
@@ -3643,27 +3724,35 @@ int visit_event_decl(struct ctx *ctx, struct ctf_node *node)
                                goto error;
                        }
 
-                       stream_id = 0;
+                       new_stream_id = g_new0(int64_t, 1);
+                       if (!new_stream_id) {
+                               BT_LOGE_STR("Failed to allocate a int64_t.");
+                               ret = -ENOMEM;
+                               goto error;
+                       }
+
+                       *new_stream_id = stream_id;
 
                        /* Move reference to visitor's context */
                        g_hash_table_insert(ctx->stream_classes,
-                               (gpointer) stream_id, new_stream_class);
+                               new_stream_id, new_stream_class);
+                       new_stream_id = NULL;
                        new_stream_class = NULL;
                        break;
                case 1:
                        /* Single stream class: get its ID */
                        if (g_hash_table_size(ctx->stream_classes) == 1) {
                                keys = g_hash_table_get_keys(ctx->stream_classes);
-                               stream_id = (int64_t) keys->data;
+                               stream_id = *((int64_t *) keys->data);
                                g_list_free(keys);
                        } else {
-                               assert(bt_ctf_trace_get_stream_class_count(
+                               assert(bt_trace_get_stream_class_count(
                                        ctx->trace) == 1);
                                stream_class =
-                                       bt_ctf_trace_get_stream_class_by_index(
+                                       bt_trace_get_stream_class_by_index(
                                                ctx->trace, 0);
                                assert(stream_class);
-                               stream_id = bt_ctf_stream_class_get_id(
+                               stream_id = bt_stream_class_get_id(
                                        stream_class);
                                BT_PUT(stream_class);
                        }
@@ -3679,11 +3768,10 @@ int visit_event_decl(struct ctx *ctx, struct ctf_node *node)
        assert(stream_id >= 0);
 
        /* We have the stream ID now; get the stream class if found */
-       stream_class = g_hash_table_lookup(ctx->stream_classes,
-               (gpointer) stream_id);
+       stream_class = g_hash_table_lookup(ctx->stream_classes, &stream_id);
        bt_get(stream_class);
        if (!stream_class) {
-               stream_class = bt_ctf_trace_get_stream_class_by_id(ctx->trace,
+               stream_class = bt_trace_get_stream_class_by_id(ctx->trace,
                        stream_id);
                if (!stream_class) {
                        _BT_LOGE_NODE(node,
@@ -3698,7 +3786,7 @@ int visit_event_decl(struct ctx *ctx, struct ctf_node *node)
 
        if (!_IS_SET(&set, _EVENT_ID_SET)) {
                /* Allow only one event without ID per stream */
-               if (bt_ctf_stream_class_get_event_class_count(stream_class) !=
+               if (bt_stream_class_get_event_class_count(stream_class) !=
                                0) {
                        _BT_LOGE_NODE(node,
                                "Missing `id` attribute in event class.");
@@ -3707,7 +3795,7 @@ int visit_event_decl(struct ctx *ctx, struct ctf_node *node)
                }
 
                /* Automatic ID */
-               ret = bt_ctf_event_class_set_id(event_class, 0);
+               ret = bt_event_class_set_id(event_class, 0);
                if (ret) {
                        _BT_LOGE_NODE(node,
                                "Cannot set event class's ID: id=0, ret=%d",
@@ -3716,14 +3804,14 @@ int visit_event_decl(struct ctx *ctx, struct ctf_node *node)
                }
        }
 
-       event_id = bt_ctf_event_class_get_id(event_class);
+       event_id = bt_event_class_get_id(event_class);
        if (event_id < 0) {
                _BT_LOGE_NODE(node, "Cannot get event class's ID.");
                ret = -EINVAL;
                goto error;
        }
 
-       eevent_class = bt_ctf_stream_class_get_event_class_by_id(stream_class,
+       eevent_class = bt_stream_class_get_event_class_by_id(stream_class,
                event_id);
        if (eevent_class) {
                BT_PUT(eevent_class);
@@ -3734,7 +3822,7 @@ int visit_event_decl(struct ctx *ctx, struct ctf_node *node)
                goto error;
        }
 
-       ret = bt_ctf_stream_class_add_event_class(stream_class, event_class);
+       ret = bt_stream_class_add_event_class(stream_class, event_class);
        BT_PUT(event_class);
        if (ret) {
                _BT_LOGE_NODE(node,
@@ -3757,13 +3845,157 @@ end:
        return ret;
 }
 
+static
+int auto_map_field_to_trace_clock_class(struct ctx *ctx,
+               struct bt_field_type *ft)
+{
+       struct bt_clock_class *clock_class_to_map_to = NULL;
+       struct bt_clock_class *mapped_clock_class = NULL;
+       int ret = 0;
+       int64_t clock_class_count;
+
+       if (!ft || !bt_field_type_is_integer(ft)) {
+               goto end;
+       }
+
+       mapped_clock_class =
+               bt_field_type_integer_get_mapped_clock_class(ft);
+       if (mapped_clock_class) {
+               goto end;
+       }
+
+       clock_class_count = bt_trace_get_clock_class_count(ctx->trace);
+       assert(clock_class_count >= 0);
+
+       switch (clock_class_count) {
+       case 0:
+               /*
+                * No clock class exists in the trace at this
+                * point. Create an implicit one at 1 GHz,
+                * named `default`, and use this clock class.
+                */
+               clock_class_to_map_to = bt_clock_class_create("default",
+                       1000000000);
+               if (!clock_class_to_map_to) {
+                       BT_LOGE_STR("Cannot create a clock class.");
+                       ret = -1;
+                       goto end;
+               }
+
+               ret = bt_trace_add_clock_class(ctx->trace,
+                       clock_class_to_map_to);
+               if (ret) {
+                       BT_LOGE_STR("Cannot add clock class to trace.");
+                       goto end;
+               }
+               break;
+       case 1:
+               /*
+                * Only one clock class exists in the trace at
+                * this point: use this one.
+                */
+               clock_class_to_map_to =
+                       bt_trace_get_clock_class_by_index(ctx->trace, 0);
+               assert(clock_class_to_map_to);
+               break;
+       default:
+               /*
+                * Timestamp field not mapped to a clock class
+                * and there's more than one clock class in the
+                * trace: this is an error.
+                */
+               BT_LOGE_STR("Timestamp field found with no mapped clock class, "
+                       "but there's more than one clock class in the trace at this point.");
+               ret = -1;
+               goto end;
+       }
+
+       assert(clock_class_to_map_to);
+       ret = bt_field_type_integer_set_mapped_clock_class(ft,
+               clock_class_to_map_to);
+       if (ret) {
+               BT_LOGE("Cannot map field type's field to trace's clock class: "
+                       "clock-class-name=\"%s\", ret=%d",
+                       bt_clock_class_get_name(clock_class_to_map_to),
+                       ret);
+               goto end;
+       }
+
+end:
+       bt_put(clock_class_to_map_to);
+       bt_put(mapped_clock_class);
+       return ret;
+}
+
+static
+int auto_map_fields_to_trace_clock_class(struct ctx *ctx,
+               struct bt_field_type *root_ft, const char *field_name)
+{
+       int ret = 0;
+       int64_t i, count;
+
+       if (!root_ft) {
+               goto end;
+       }
+
+       if (!bt_field_type_is_structure(root_ft) &&
+                       !bt_field_type_is_variant(root_ft)) {
+               goto end;
+       }
+
+       if (bt_field_type_is_structure(root_ft)) {
+               count = bt_field_type_structure_get_field_count(root_ft);
+       } else {
+               count = bt_field_type_variant_get_field_count(root_ft);
+       }
+
+       assert(count >= 0);
+
+       for (i = 0; i < count; i++) {
+               _BT_FIELD_TYPE_INIT(ft);
+               const char *name;
+
+               if (bt_field_type_is_structure(root_ft)) {
+                       ret = bt_field_type_structure_get_field_by_index(
+                               root_ft, &name, &ft, i);
+               } else if (bt_field_type_is_variant(root_ft)) {
+                       ret = bt_field_type_variant_get_field_by_index(
+                               root_ft, &name, &ft, i);
+               }
+
+               assert(ret == 0);
+
+               if (strcmp(name, field_name) == 0) {
+                       ret = auto_map_field_to_trace_clock_class(ctx, ft);
+                       if (ret) {
+                               BT_LOGE("Cannot automatically map field to trace's clock class: "
+                                       "field-name=\"%s\"", field_name);
+                               bt_put(ft);
+                               goto end;
+                       }
+               }
+
+               ret = auto_map_fields_to_trace_clock_class(ctx, ft, field_name);
+               bt_put(ft);
+               if (ret) {
+                       BT_LOGE("Cannot automatically map structure or variant field type's fields to trace's clock class: "
+                               "field-name=\"%s\", root-field-name=\"%s\"",
+                               field_name, name);
+                       goto end;
+               }
+       }
+
+end:
+       return ret;
+}
+
 static
 int visit_stream_decl_entry(struct ctx *ctx, struct ctf_node *node,
-       struct bt_ctf_stream_class *stream_class, int *set)
+       struct bt_stream_class *stream_class, int *set)
 {
        int ret = 0;
        char *left = NULL;
-       _BT_CTF_FIELD_TYPE_INIT(decl);
+       _BT_FIELD_TYPE_INIT(decl);
 
        switch (node->type) {
        case NODE_TYPEDEF:
@@ -3814,8 +4046,7 @@ int visit_stream_decl_entry(struct ctx *ctx, struct ctf_node *node,
                                goto error;
                        }
 
-                       ptr = g_hash_table_lookup(ctx->stream_classes,
-                               (gpointer) id);
+                       ptr = g_hash_table_lookup(ctx->stream_classes, &id);
                        if (ptr) {
                                _BT_LOGE_NODE(node,
                                        "Duplicate stream class (same ID): id=%" PRId64,
@@ -3824,7 +4055,7 @@ int visit_stream_decl_entry(struct ctx *ctx, struct ctf_node *node,
                                goto error;
                        }
 
-                       ret = bt_ctf_stream_class_set_id(stream_class, id);
+                       ret = bt_stream_class_set_id(stream_class, id);
                        if (ret) {
                                _BT_LOGE_NODE(node,
                                        "Cannot set stream class's ID: "
@@ -3853,8 +4084,15 @@ int visit_stream_decl_entry(struct ctx *ctx, struct ctf_node *node,
                        }
 
                        assert(decl);
+                       ret = auto_map_fields_to_trace_clock_class(ctx,
+                               decl, "timestamp");
+                       if (ret) {
+                               _BT_LOGE_NODE(node,
+                                       "Cannot automatically map specific event header field type fields named `timestamp` to trace's clock class.");
+                               goto error;
+                       }
 
-                       ret = bt_ctf_stream_class_set_event_header_type(
+                       ret = bt_stream_class_set_event_header_type(
                                stream_class, decl);
                        BT_PUT(decl);
                        if (ret) {
@@ -3885,7 +4123,7 @@ int visit_stream_decl_entry(struct ctx *ctx, struct ctf_node *node,
 
                        assert(decl);
 
-                       ret = bt_ctf_stream_class_set_event_context_type(
+                       ret = bt_stream_class_set_event_context_type(
                                stream_class, decl);
                        BT_PUT(decl);
                        if (ret) {
@@ -3915,8 +4153,23 @@ int visit_stream_decl_entry(struct ctx *ctx, struct ctf_node *node,
                        }
 
                        assert(decl);
+                       ret = auto_map_fields_to_trace_clock_class(ctx,
+                               decl, "timestamp_begin");
+                       if (ret) {
+                               _BT_LOGE_NODE(node,
+                                       "Cannot automatically map specific packet context field type fields named `timestamp_begin` to trace's clock class.");
+                               goto error;
+                       }
 
-                       ret = bt_ctf_stream_class_set_packet_context_type(
+                       ret = auto_map_fields_to_trace_clock_class(ctx,
+                               decl, "timestamp_end");
+                       if (ret) {
+                               _BT_LOGE_NODE(node,
+                                       "Cannot automatically map specific packet context field type fields named `timestamp_end` to trace's clock class.");
+                               goto error;
+                       }
+
+                       ret = bt_stream_class_set_packet_context_type(
                                stream_class, decl);
                        BT_PUT(decl);
                        if (ret) {
@@ -3955,11 +4208,12 @@ static
 int visit_stream_decl(struct ctx *ctx, struct ctf_node *node)
 {
        int64_t id;
+       int64_t *new_id;
        int set = 0;
        int ret = 0;
        struct ctf_node *iter;
-       struct bt_ctf_stream_class *stream_class = NULL;
-       struct bt_ctf_stream_class *existing_stream_class = NULL;
+       struct bt_stream_class *stream_class = NULL;
+       struct bt_stream_class *existing_stream_class = NULL;
        struct bt_list_head *decl_list = &node->u.stream.declaration_list;
 
        if (node->visited) {
@@ -3995,11 +4249,11 @@ int visit_stream_decl(struct ctx *ctx, struct ctf_node *node)
 
        if (_IS_SET(&set, _STREAM_ID_SET)) {
                /* Check that packet header has stream_id field */
-               _BT_CTF_FIELD_TYPE_INIT(stream_id_decl);
-               _BT_CTF_FIELD_TYPE_INIT(packet_header_decl);
+               _BT_FIELD_TYPE_INIT(stream_id_decl);
+               _BT_FIELD_TYPE_INIT(packet_header_decl);
 
                packet_header_decl =
-                       bt_ctf_trace_get_packet_header_type(ctx->trace);
+                       bt_trace_get_packet_header_type(ctx->trace);
                if (!packet_header_decl) {
                        _BT_LOGE_NODE(node,
                                "Stream class has a `id` attribute, "
@@ -4008,7 +4262,7 @@ int visit_stream_decl(struct ctx *ctx, struct ctf_node *node)
                }
 
                stream_id_decl =
-                       bt_ctf_field_type_structure_get_field_type_by_name(
+                       bt_field_type_structure_get_field_type_by_name(
                                packet_header_decl, "stream_id");
                BT_PUT(packet_header_decl);
                if (!stream_id_decl) {
@@ -4018,7 +4272,7 @@ int visit_stream_decl(struct ctx *ctx, struct ctf_node *node)
                        goto error;
                }
 
-               if (!bt_ctf_field_type_is_integer(stream_id_decl)) {
+               if (!bt_field_type_is_integer(stream_id_decl)) {
                        BT_PUT(stream_id_decl);
                        _BT_LOGE_NODE(node,
                                "Stream class has a `id` attribute, "
@@ -4037,11 +4291,11 @@ int visit_stream_decl(struct ctx *ctx, struct ctf_node *node)
                }
 
                /* Automatic ID: 0 */
-               ret = bt_ctf_stream_class_set_id(stream_class, 0);
+               ret = bt_stream_class_set_id(stream_class, 0);
                assert(ret == 0);
        }
 
-       id = bt_ctf_stream_class_get_id(stream_class);
+       id = bt_stream_class_get_id(stream_class);
        if (id < 0) {
                _BT_LOGE_NODE(node,
                        "Cannot get stream class's ID.");
@@ -4053,9 +4307,9 @@ int visit_stream_decl(struct ctx *ctx, struct ctf_node *node)
         * Make sure that this stream class's ID is currently unique in
         * the trace.
         */
-       existing_stream_class = bt_ctf_trace_get_stream_class_by_id(ctx->trace,
+       existing_stream_class = bt_trace_get_stream_class_by_id(ctx->trace,
                id);
-       if (g_hash_table_lookup(ctx->stream_classes, (gpointer) id) ||
+       if (g_hash_table_lookup(ctx->stream_classes, &id) ||
                        existing_stream_class) {
                _BT_LOGE_NODE(node,
                        "Duplicate stream class (same ID): id=%" PRId64,
@@ -4064,8 +4318,16 @@ int visit_stream_decl(struct ctx *ctx, struct ctf_node *node)
                goto error;
        }
 
+       new_id = g_new0(int64_t, 1);
+       if (!new_id) {
+               BT_LOGE_STR("Failed to allocate a int64_t.");
+               ret = -ENOMEM;
+               goto error;
+       }
+       *new_id = id;
+
        /* Move reference to visitor's context */
-       g_hash_table_insert(ctx->stream_classes, (gpointer) (int64_t) id,
+       g_hash_table_insert(ctx->stream_classes, new_id,
                stream_class);
        stream_class = NULL;
        goto end;
@@ -4083,7 +4345,7 @@ int visit_trace_decl_entry(struct ctx *ctx, struct ctf_node *node, int *set)
 {
        int ret = 0;
        char *left = NULL;
-       _BT_CTF_FIELD_TYPE_INIT(packet_header_decl);
+       _BT_FIELD_TYPE_INIT(packet_header_decl);
 
        switch (node->type) {
        case NODE_TYPEDEF:
@@ -4162,7 +4424,7 @@ int visit_trace_decl_entry(struct ctx *ctx, struct ctf_node *node, int *set)
                                goto error;
                        }
 
-                       ret = bt_ctf_trace_set_uuid(ctx->trace, ctx->trace_uuid);
+                       ret = bt_trace_set_uuid(ctx->trace, ctx->trace_uuid);
                        if (ret) {
                                _BT_LOGE_NODE(node, "Cannot set trace's UUID.");
                                goto error;
@@ -4199,7 +4461,7 @@ int visit_trace_decl_entry(struct ctx *ctx, struct ctf_node *node, int *set)
                        }
 
                        assert(packet_header_decl);
-                       ret = bt_ctf_trace_set_packet_header_type(ctx->trace,
+                       ret = bt_trace_set_packet_header_type(ctx->trace,
                                packet_header_decl);
                        BT_PUT(packet_header_decl);
                        if (ret) {
@@ -4357,7 +4619,7 @@ int visit_env(struct ctx *ctx, struct ctf_node *node)
                                }
                        }
 
-                       ret = bt_ctf_trace_set_environment_field_string(
+                       ret = bt_trace_set_environment_field_string(
                                ctx->trace, left, right);
                        g_free(right);
 
@@ -4385,7 +4647,7 @@ int visit_env(struct ctx *ctx, struct ctf_node *node)
                                goto error;
                        }
 
-                       ret = bt_ctf_trace_set_environment_field_integer(
+                       ret = bt_trace_set_environment_field_integer(
                                ctx->trace, left, v);
                        if (ret) {
                                _BT_LOGE_NODE(entry_node,
@@ -4435,7 +4697,7 @@ int set_trace_byte_order(struct ctx *ctx, struct ctf_node *trace_node)
                        }
 
                        if (!strcmp(left, "byte_order")) {
-                               enum bt_ctf_byte_order bo;
+                               enum bt_byte_order bo;
 
                                if (_IS_SET(&set, _TRACE_BYTE_ORDER_SET)) {
                                        _BT_LOGE_DUP_ATTR(node, "byte_order",
@@ -4449,13 +4711,13 @@ int set_trace_byte_order(struct ctx *ctx, struct ctf_node *trace_node)
                                        &node->u.ctf_expression.right,
                                        struct ctf_node, siblings);
                                bo = byte_order_from_unary_expr(right_node);
-                               if (bo == BT_CTF_BYTE_ORDER_UNKNOWN) {
+                               if (bo == BT_BYTE_ORDER_UNKNOWN) {
                                        _BT_LOGE_NODE(node,
                                                "Invalid `byte_order` attribute in trace (`trace` block): "
                                                "expecting `le`, `be`, or `network`.");
                                        ret = -EINVAL;
                                        goto error;
-                               } else if (bo == BT_CTF_BYTE_ORDER_NATIVE) {
+                               } else if (bo == BT_BYTE_ORDER_NATIVE) {
                                        _BT_LOGE_NODE(node,
                                                "Invalid `byte_order` attribute in trace (`trace` block): "
                                                "cannot be set to `native` here.");
@@ -4464,7 +4726,7 @@ int set_trace_byte_order(struct ctx *ctx, struct ctf_node *trace_node)
                                }
 
                                ctx->trace_bo = bo;
-                               ret = bt_ctf_trace_set_native_byte_order(
+                               ret = bt_trace_set_native_byte_order(
                                        ctx->trace, bo);
                                if (ret) {
                                        _BT_LOGE_NODE(node,
@@ -4496,7 +4758,7 @@ error:
 
 static
 int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
-       struct bt_ctf_clock_class *clock, int *set)
+       struct bt_clock_class *clock, int *set)
 {
        int ret = 0;
        char *left = NULL;
@@ -4534,7 +4796,7 @@ int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
                        goto error;
                }
 
-               ret = bt_ctf_clock_class_set_name(clock, right);
+               ret = bt_clock_class_set_name(clock, right);
                if (ret) {
                        _BT_LOGE_NODE(entry_node,
                                "cannot set clock class's name");
@@ -4560,7 +4822,7 @@ int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
                        goto error;
                }
 
-               ret = bt_ctf_clock_class_set_uuid(clock, uuid);
+               ret = bt_clock_class_set_uuid(clock, uuid);
                if (ret) {
                        _BT_LOGE_NODE(entry_node,
                                "Cannot set clock class's UUID.");
@@ -4587,7 +4849,7 @@ int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
                        goto error;
                }
 
-               ret = bt_ctf_clock_class_set_description(clock, right);
+               ret = bt_clock_class_set_description(clock, right);
                if (ret) {
                        _BT_LOGE_NODE(entry_node,
                                "Cannot set clock class's description.");
@@ -4615,7 +4877,15 @@ int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
                        goto error;
                }
 
-               ret = bt_ctf_clock_class_set_frequency(clock, freq);
+               if (freq == -1ULL || freq == 0) {
+                       _BT_LOGE_NODE(entry_node,
+                               "Invalid clock class frequency: freq=%" PRIu64,
+                               freq);
+                       ret = -EINVAL;
+                       goto error;
+               }
+
+               ret = bt_clock_class_set_frequency(clock, freq);
                if (ret) {
                        _BT_LOGE_NODE(entry_node,
                                "Cannot set clock class's frequency.");
@@ -4642,7 +4912,7 @@ int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
                        goto error;
                }
 
-               ret = bt_ctf_clock_class_set_precision(clock, precision);
+               ret = bt_clock_class_set_precision(clock, precision);
                if (ret) {
                        _BT_LOGE_NODE(entry_node,
                                "Cannot set clock class's precision.");
@@ -4651,7 +4921,7 @@ int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
 
                _SET(set, _CLOCK_PRECISION_SET);
        } else if (!strcmp(left, "offset_s")) {
-               uint64_t offset_s;
+               int64_t offset_s;
 
                if (_IS_SET(set, _CLOCK_OFFSET_S_SET)) {
                        _BT_LOGE_DUP_ATTR(entry_node, "offset_s",
@@ -4660,7 +4930,7 @@ int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
                        goto error;
                }
 
-               ret = get_unary_unsigned(
+               ret = get_unary_signed(
                        &entry_node->u.ctf_expression.right, &offset_s);
                if (ret) {
                        _BT_LOGE_NODE(entry_node,
@@ -4669,7 +4939,7 @@ int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
                        goto error;
                }
 
-               ret = bt_ctf_clock_class_set_offset_s(clock, offset_s);
+               ret = bt_clock_class_set_offset_s(clock, offset_s);
                if (ret) {
                        _BT_LOGE_NODE(entry_node,
                                "Cannot set clock class's offset in seconds.");
@@ -4678,7 +4948,7 @@ int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
 
                _SET(set, _CLOCK_OFFSET_S_SET);
        } else if (!strcmp(left, "offset")) {
-               uint64_t offset;
+               int64_t offset;
 
                if (_IS_SET(set, _CLOCK_OFFSET_SET)) {
                        _BT_LOGE_DUP_ATTR(entry_node, "offset", "clock class");
@@ -4686,7 +4956,7 @@ int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
                        goto error;
                }
 
-               ret = get_unary_unsigned(
+               ret = get_unary_signed(
                        &entry_node->u.ctf_expression.right, &offset);
                if (ret) {
                        _BT_LOGE_NODE(entry_node,
@@ -4695,7 +4965,7 @@ int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
                        goto error;
                }
 
-               ret = bt_ctf_clock_class_set_offset_cycles(clock, offset);
+               ret = bt_clock_class_set_offset_cycles(clock, offset);
                if (ret) {
                        _BT_LOGE_NODE(entry_node,
                                "Cannot set clock class's offset in cycles.");
@@ -4724,7 +4994,7 @@ int visit_clock_decl_entry(struct ctx *ctx, struct ctf_node *entry_node,
                        goto error;
                }
 
-               ret = bt_ctf_clock_class_set_is_absolute(clock, ret);
+               ret = bt_clock_class_set_is_absolute(clock, ret);
                if (ret) {
                        _BT_LOGE_NODE(entry_node,
                                "Cannot set clock class's absolute flag.");
@@ -4765,28 +5035,32 @@ int64_t cycles_from_ns(uint64_t frequency, int64_t ns)
 }
 
 static
-int apply_clock_class_offset(struct ctx *ctx, struct bt_ctf_clock_class *clock)
+int apply_clock_class_offset(struct ctx *ctx, struct bt_clock_class *clock)
 {
        int ret;
        uint64_t freq;
        int64_t offset_cycles;
+       int64_t offset_to_apply;
 
-       freq = bt_ctf_clock_class_get_frequency(clock);
+       freq = bt_clock_class_get_frequency(clock);
        if (freq == -1ULL) {
                BT_LOGE_STR("Cannot get clock class's frequency.");
                ret = -1;
                goto end;
        }
 
-       ret = bt_ctf_clock_class_get_offset_cycles(clock, &offset_cycles);
+       ret = bt_clock_class_get_offset_cycles(clock, &offset_cycles);
        if (ret) {
                BT_LOGE_STR("Cannot get clock class's offset in cycles.");
                ret = -1;
                goto end;
        }
 
-       offset_cycles += cycles_from_ns(freq, ctx->clock_class_offset_ns);
-       ret = bt_ctf_clock_class_set_offset_cycles(clock, offset_cycles);
+       offset_to_apply =
+               ctx->decoder_config.clock_class_offset_s * 1000000000LL +
+               ctx->decoder_config.clock_class_offset_ns;
+       offset_cycles += cycles_from_ns(freq, offset_to_apply);
+       ret = bt_clock_class_set_offset_cycles(clock, offset_cycles);
 
 end:
        return ret;
@@ -4797,7 +5071,7 @@ int visit_clock_decl(struct ctx *ctx, struct ctf_node *clock_node)
 {
        int ret = 0;
        int set = 0;
-       struct bt_ctf_clock_class *clock;
+       struct bt_clock_class *clock;
        struct ctf_node *entry_node;
        struct bt_list_head *decl_list = &clock_node->u.clock.declaration_list;
        const char *clock_class_name;
@@ -4807,7 +5081,9 @@ int visit_clock_decl(struct ctx *ctx, struct ctf_node *clock_node)
        }
 
        clock_node->visited = TRUE;
-       clock = bt_ctf_clock_class_create(NULL);
+
+       /* CTF 1.8's default frequency for a clock class is 1 GHz */
+       clock = bt_clock_class_create(NULL, 1000000000);
        if (!clock) {
                _BT_LOGE_NODE(clock_node,
                        "Cannot create default clock class.");
@@ -4832,7 +5108,7 @@ int visit_clock_decl(struct ctx *ctx, struct ctf_node *clock_node)
                goto error;
        }
 
-       clock_class_name = bt_ctf_clock_class_get_name(clock);
+       clock_class_name = bt_clock_class_get_name(clock);
        assert(clock_class_name);
        if (ctx->is_lttng && strcmp(clock_class_name, "monotonic") == 0) {
                /*
@@ -4841,7 +5117,7 @@ int visit_clock_decl(struct ctx *ctx, struct ctf_node *clock_node)
                 * it's a condition to be able to sort notifications
                 * from different sources.
                 */
-               ret = bt_ctf_clock_class_set_is_absolute(clock, 1);
+               ret = bt_clock_class_set_is_absolute(clock, 1);
                if (ret) {
                        _BT_LOGE_NODE(clock_node,
                                "Cannot set clock class's absolute flag.");
@@ -4856,7 +5132,7 @@ int visit_clock_decl(struct ctx *ctx, struct ctf_node *clock_node)
                goto error;
        }
 
-       ret = bt_ctf_trace_add_clock_class(ctx->trace, clock);
+       ret = bt_trace_add_clock_class(ctx->trace, clock);
        if (ret) {
                _BT_LOGE_NODE(clock_node,
                        "Cannot add clock class to trace.");
@@ -4902,7 +5178,7 @@ int visit_root_decl(struct ctx *ctx, struct ctf_node *root_decl_node)
                break;
        case NODE_TYPE_SPECIFIER_LIST:
        {
-               _BT_CTF_FIELD_TYPE_INIT(decl);
+               _BT_FIELD_TYPE_INIT(decl);
 
                /*
                 * Just add the type specifier to the root
@@ -4939,7 +5215,7 @@ int set_trace_name(struct ctx *ctx)
        int ret = 0;
        struct bt_value *value = NULL;
 
-       assert(bt_ctf_trace_get_stream_class_count(ctx->trace) == 0);
+       assert(bt_trace_get_stream_class_count(ctx->trace) == 0);
        name = g_string_new(NULL);
        if (!name) {
                BT_LOGE_STR("Failed to allocate a GString.");
@@ -4951,7 +5227,7 @@ int set_trace_name(struct ctx *ctx)
         * Check if we have a trace environment string value named `hostname`.
         * If so, use it as the trace name's prefix.
         */
-       value = bt_ctf_trace_get_environment_field_value_by_name(ctx->trace,
+       value = bt_trace_get_environment_field_value_by_name(ctx->trace,
                "hostname");
        if (bt_value_is_string(value)) {
                const char *hostname;
@@ -4969,7 +5245,7 @@ int set_trace_name(struct ctx *ctx)
                g_string_append(name, ctx->trace_name_suffix);
        }
 
-       ret = bt_ctf_trace_set_name(ctx->trace, name->str);
+       ret = bt_trace_set_name(ctx->trace, name->str);
        if (ret) {
                BT_LOGE("Cannot set trace's name: name=\"%s\"", name->str);
                goto error;
@@ -4998,7 +5274,7 @@ int move_ctx_stream_classes_to_trace(struct ctx *ctx)
        gpointer key, stream_class;
 
        if (g_hash_table_size(ctx->stream_classes) > 0 &&
-                       bt_ctf_trace_get_stream_class_count(ctx->trace) == 0) {
+                       bt_trace_get_stream_class_count(ctx->trace) == 0) {
                /*
                 * We're about to add the first stream class to the
                 * trace. This will freeze the trace, and after this
@@ -5015,10 +5291,10 @@ int move_ctx_stream_classes_to_trace(struct ctx *ctx)
        g_hash_table_iter_init(&iter, ctx->stream_classes);
 
        while (g_hash_table_iter_next(&iter, &key, &stream_class)) {
-               ret = bt_ctf_trace_add_stream_class(ctx->trace,
+               ret = bt_trace_add_stream_class(ctx->trace,
                        stream_class);
                if (ret) {
-                       int64_t id = bt_ctf_stream_class_get_id(stream_class);
+                       int64_t id = bt_stream_class_get_id(stream_class);
                        BT_LOGE("Cannot add stream class to trace: id=%" PRId64,
                                id);
                        goto end;
@@ -5033,27 +5309,28 @@ end:
 
 BT_HIDDEN
 struct ctf_visitor_generate_ir *ctf_visitor_generate_ir_create(
-               int64_t clock_class_offset_ns, const char *name)
+               const struct ctf_metadata_decoder_config *decoder_config,
+               const char *name)
 {
        int ret;
        struct ctx *ctx = NULL;
-       struct bt_ctf_trace *trace;
+       struct bt_trace *trace;
 
-       trace = bt_ctf_trace_create();
+       trace = bt_trace_create();
        if (!trace) {
                BT_LOGE_STR("Cannot create empty trace.");
                goto error;
        }
 
        /* Set packet header to NULL to override the default one */
-       ret = bt_ctf_trace_set_packet_header_type(trace, NULL);
+       ret = bt_trace_set_packet_header_type(trace, NULL);
        if (ret) {
                BT_LOGE_STR("Cannot reset initial trace's packet header field type.");
                goto error;
        }
 
        /* Create visitor's context */
-       ctx = ctx_create(trace, clock_class_offset_ns, name);
+       ctx = ctx_create(trace, decoder_config, name);
        if (!ctx) {
                BT_LOGE_STR("Cannot create visitor's context.");
                goto error;
@@ -5078,7 +5355,7 @@ void ctf_visitor_generate_ir_destroy(struct ctf_visitor_generate_ir *visitor)
 }
 
 BT_HIDDEN
-struct bt_ctf_trace *ctf_visitor_generate_ir_get_trace(
+struct bt_trace *ctf_visitor_generate_ir_get_trace(
                struct ctf_visitor_generate_ir *visitor)
 {
        struct ctx *ctx = (void *) visitor;
@@ -5110,7 +5387,7 @@ int ctf_visitor_generate_ir_visit_node(struct ctf_visitor_generate_ir *visitor,
                 * have the native byte order yet, and we don't have any
                 * trace block yet, then fail with EINCOMPLETE.
                 */
-               if (ctx->trace_bo == BT_CTF_BYTE_ORDER_NATIVE) {
+               if (ctx->trace_bo == BT_BYTE_ORDER_NATIVE) {
                        bt_list_for_each_entry(iter, &node->u.root.trace, siblings) {
                                if (got_trace_decl) {
                                        _BT_LOGE_NODE(node,
@@ -5137,8 +5414,8 @@ int ctf_visitor_generate_ir_visit_node(struct ctf_visitor_generate_ir *visitor,
                        }
                }
 
-               assert(ctx->trace_bo == BT_CTF_BYTE_ORDER_LITTLE_ENDIAN ||
-                       ctx->trace_bo == BT_CTF_BYTE_ORDER_BIG_ENDIAN);
+               assert(ctx->trace_bo == BT_BYTE_ORDER_LITTLE_ENDIAN ||
+                       ctx->trace_bo == BT_BYTE_ORDER_BIG_ENDIAN);
                assert(ctx->current_scope &&
                        ctx->current_scope->parent_scope == NULL);
 
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