Implement CTF-IR event fields getters
[babeltrace.git] / formats / ctf / ir / event-fields.c
index 17616a51be4f21baa3b7faa1d0f6098d8724926a..973c9bdd395338bbc5370355393dd61a374fd85c 100644 (file)
@@ -212,6 +212,42 @@ void bt_ctf_field_put(struct bt_ctf_field *field)
        }
 }
 
+struct bt_ctf_field_type *bt_ctf_field_get_type(struct bt_ctf_field *field)
+{
+       struct bt_ctf_field_type *ret = NULL;
+
+       if (!field) {
+               goto end;
+       }
+
+       ret = field->type;
+       bt_ctf_field_type_get(ret);
+end:
+       return ret;
+}
+
+struct bt_ctf_field *bt_ctf_field_sequence_get_length(
+               struct bt_ctf_field *field)
+{
+       struct bt_ctf_field *ret = NULL;
+       struct bt_ctf_field_sequence *sequence;
+
+       if (!field) {
+               goto end;
+       }
+
+       if (bt_ctf_field_type_get_type_id(field->type) !=
+               CTF_TYPE_SEQUENCE) {
+               goto end;
+       }
+
+       sequence = container_of(field, struct bt_ctf_field_sequence, parent);
+       ret = sequence->length;
+       bt_ctf_field_get(ret);
+end:
+       return ret;
+}
+
 int bt_ctf_field_sequence_set_length(struct bt_ctf_field *field,
                struct bt_ctf_field *length_field)
 {
@@ -305,6 +341,59 @@ error:
        return new_field;
 }
 
+struct bt_ctf_field *bt_ctf_field_structure_get_field_by_index(
+               struct bt_ctf_field *field, size_t index)
+{
+       int ret;
+       const char *field_name;
+       struct bt_ctf_field_structure *structure;
+       struct bt_ctf_field_type *structure_type;
+       struct bt_ctf_field_type *field_type = NULL;
+       struct bt_ctf_field *ret_field = NULL;
+
+       if (!field ||
+               bt_ctf_field_type_get_type_id(field->type) != CTF_TYPE_STRUCT) {
+               goto end;
+       }
+
+       structure = container_of(field, struct bt_ctf_field_structure, parent);
+       if (index >= structure->fields->len) {
+               goto error;
+       }
+
+       ret_field = structure->fields->pdata[index];
+       if (ret_field) {
+               goto end;
+       }
+
+       /* Field has not been instanciated yet, create it */
+       structure_type = bt_ctf_field_get_type(field);
+       if (!structure_type) {
+               goto error;
+       }
+
+       ret = bt_ctf_field_type_structure_get_field(structure_type,
+               &field_name, &field_type, index);
+       bt_ctf_field_type_put(structure_type);
+       if (ret) {
+               goto error;
+       }
+
+       ret_field = bt_ctf_field_create(field_type);
+       if (!ret_field) {
+               goto error;
+       }
+
+       structure->fields->pdata[index] = ret_field;
+end:
+       bt_ctf_field_get(ret_field);
+error:
+       if (field_type) {
+               bt_ctf_field_type_put(field_type);
+       }
+       return ret_field;
+}
+
 BT_HIDDEN
 int bt_ctf_field_structure_set_field(struct bt_ctf_field *field,
                const char *name, struct bt_ctf_field *value)
@@ -498,6 +587,89 @@ end:
        return container;
 }
 
+const char *bt_ctf_field_enumeration_get_mapping_name(
+       struct bt_ctf_field *field)
+{
+       int ret;
+       const char *name = NULL;
+       struct bt_ctf_field *container = NULL;
+       struct bt_ctf_field_type *container_type = NULL;
+       struct bt_ctf_field_type_integer *integer_type = NULL;
+       struct bt_ctf_field_type_enumeration *enumeration_type = NULL;
+
+       container = bt_ctf_field_enumeration_get_container(field);
+       if (!container) {
+               goto end;
+       }
+
+       container_type = bt_ctf_field_get_type(container);
+       if (!container_type) {
+               goto error_put_container;
+       }
+
+       integer_type = container_of(container_type,
+               struct bt_ctf_field_type_integer, parent);
+       enumeration_type = container_of(field->type,
+               struct bt_ctf_field_type_enumeration, parent);
+
+       if (integer_type->declaration.signedness) {
+               uint64_t value;
+               ret = bt_ctf_field_unsigned_integer_get_value(container,
+                     &value);
+               if (ret) {
+                       goto error_put_container_type;
+               }
+
+               name = bt_ctf_field_type_enumeration_get_mapping_name_unsigned(
+                       enumeration_type, value);
+       } else {
+               int64_t value;
+               ret = bt_ctf_field_signed_integer_get_value(container,
+                     &value);
+               if (ret) {
+                       goto error_put_container_type;
+               }
+
+               name = bt_ctf_field_type_enumeration_get_mapping_name_signed(
+                       enumeration_type, value);
+       }
+
+error_put_container_type:
+       bt_ctf_field_type_put(container_type);
+error_put_container:
+       bt_ctf_field_put(container);
+end:
+       return name;
+}
+
+int bt_ctf_field_signed_integer_get_value(struct bt_ctf_field *field,
+               int64_t *value)
+{
+       int ret = 0;
+       struct bt_ctf_field_integer *integer;
+       struct bt_ctf_field_type_integer *integer_type;
+
+       if (!field || !value || !field->payload_set ||
+               bt_ctf_field_type_get_type_id(field->type) !=
+                       CTF_TYPE_INTEGER) {
+               ret = -1;
+               goto end;
+       }
+
+       integer_type = container_of(field->type,
+               struct bt_ctf_field_type_integer, parent);
+       if (!integer_type->declaration.signedness) {
+               ret = -1;
+               goto end;
+       }
+
+       integer = container_of(field,
+               struct bt_ctf_field_integer, parent);
+       *value = integer->definition.value._signed;
+end:
+       return ret;
+}
+
 int bt_ctf_field_signed_integer_set_value(struct bt_ctf_field *field,
                int64_t value)
 {
@@ -536,6 +708,34 @@ end:
        return ret;
 }
 
+int bt_ctf_field_unsigned_integer_get_value(struct bt_ctf_field *field,
+               uint64_t *value)
+{
+       int ret = 0;
+       struct bt_ctf_field_integer *integer;
+       struct bt_ctf_field_type_integer *integer_type;
+
+       if (!field || !value || !field->payload_set ||
+               bt_ctf_field_type_get_type_id(field->type) !=
+                       CTF_TYPE_INTEGER) {
+               ret = -1;
+               goto end;
+       }
+
+       integer_type = container_of(field->type,
+               struct bt_ctf_field_type_integer, parent);
+       if (integer_type->declaration.signedness) {
+               ret = -1;
+               goto end;
+       }
+
+       integer = container_of(field,
+               struct bt_ctf_field_integer, parent);
+       *value = integer->definition.value._unsigned;
+end:
+       return ret;
+}
+
 int bt_ctf_field_unsigned_integer_set_value(struct bt_ctf_field *field,
                uint64_t value)
 {
@@ -573,6 +773,26 @@ end:
        return ret;
 }
 
+int bt_ctf_field_floating_point_get_value(struct bt_ctf_field *field,
+               double *value)
+{
+       int ret = 0;
+       struct bt_ctf_field_floating_point *floating_point;
+
+       if (!field || !value || !field->payload_set ||
+               bt_ctf_field_type_get_type_id(field->type) !=
+                       CTF_TYPE_FLOAT) {
+               ret = -1;
+               goto end;
+       }
+
+       floating_point = container_of(field,
+               struct bt_ctf_field_floating_point, parent);
+       *value = floating_point->definition.value;
+end:
+       return ret;
+}
+
 int bt_ctf_field_floating_point_set_value(struct bt_ctf_field *field,
                double value)
 {
@@ -593,6 +813,24 @@ end:
        return ret;
 }
 
+const char *bt_ctf_field_string_get_value(struct bt_ctf_field *field)
+{
+       const char *ret = NULL;
+       struct bt_ctf_field_string *string;
+
+       if (!field || !field->payload_set ||
+               bt_ctf_field_type_get_type_id(field->type) !=
+                       CTF_TYPE_STRING) {
+               goto end;
+       }
+
+       string = container_of(field,
+               struct bt_ctf_field_string, parent);
+       ret = string->payload->str;
+end:
+       return ret;
+}
+
 int bt_ctf_field_string_set_value(struct bt_ctf_field *field,
                const char *value)
 {
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