+static
+struct declaration *ctf_type_declarator_visit(int fd, int depth,
+ struct cds_list_head *declaration_specifier,
+ GQuark *field_name,
+ struct ctf_node *node_type_declarator,
+ struct declaration_scope *declaration_scope
+ struct declaration *nested_declaration)
+{
+ /*
+ * Visit type declarator by first taking care of sequence/array
+ * (recursively). Then, when we get to the identifier, take care
+ * of pointers.
+ */
+
+ assert(node_type_declarator->u.type_declarator.type != TYPEDEC_UNKNOWN);
+ /* TODO: gcc bitfields not supported yet. */
+ assert(node_type_declarator->u.type_declarator.bitfield_len == NULL);
+
+ if (!nested_declaration) {
+ if (!cds_list_empty(&node_type_declarator->u.type_declarator.pointers)) {
+ /*
+ * If we have a pointer declarator, it _has_ to be present in
+ * the typealiases (else fail).
+ */
+ nested_declaration = ... ;
+ } else {
+ nested_declaration = /* parse declaration_specifier */;
+ }
+
+ }
+
+ if (node_type_declarator->u.type_declarator.type == TYPEDEC_ID) {
+ if (node_type_declarator->u.type_declarator.u.id)
+ *field_name = g_quark_from_string(node_type_declarator->u.type_declarator.u.id);
+ else
+ *field_name = 0;
+ return nested_declaration;
+ } else {
+ struct declaration *declaration;
+ struct node *length;
+
+ /* TYPEDEC_NESTED */
+
+ /* create array/sequence, pass nested_declaration as child. */
+ length = node_type_declarator->u.type_declarator.u.nested.length;
+ if (length) {
+ switch (length->type) {
+ case NODE_UNARY_EXPRESSION:
+ /* Array */
+ declaration = /* create array */;
+ break;
+ case NODE_TYPE_SPECIFIER:
+ /* Sequence */
+ declaration = /* create sequence */;
+ break;
+ default:
+ assert(0);
+ }
+ }
+
+ /* Pass it as content of outer container */
+ declaration = ctf_type_declarator_visit(fd, depth,
+ declaration_specifier, field_name,
+ node_type_declarator->u.type_declarator.u.nested.type_declarator,
+ declaration_scope, declaration);
+ return declaration;
+ }
+}
+
+static
+int ctf_struct_type_declarators_visit(int fd, int depth,
+ struct declaration_struct *struct_declaration,
+ struct cds_list_head *declaration_specifier,
+ struct cds_list_head *type_declarators,
+ struct declaration_scope *declaration_scope)
+{
+ struct ctf_node *iter;
+ GQuark field_name;
+
+ cds_list_for_each_entry(iter, type_declarators, siblings) {
+ struct declaration *field_declaration;
+
+ field_declaration = ctf_type_declarator_visit(fd, depth,
+ declaration_specifier,
+ &field_name, iter,
+ struct_declaration->scope,
+ NULL);
+ struct_declaration_add_field(struct_declaration,
+ g_quark_to_string(field_name),
+ field_declaration);
+ }
+
+ return 0;
+}
+
+static
+int ctf_typedef_visit(int fd, int depth, struct declaration_scope *scope,
+ struct cds_list_head *declaration_specifier,
+ struct cds_list_head *type_declarators)
+{
+ struct ctf_node *iter;
+ GQuark identifier;
+
+ cds_list_for_each_entry(iter, type_declarators, siblings) {
+ struct declaration *type_declaration;
+ int ret;
+
+ type_declaration = ctf_type_declarator_visit(fd, depth,
+ declaration_specifier,
+ &identifier, iter,
+ scope, NULL);
+ ret = register_declaration(identifier, type_declaration, scope);
+ if (ret) {
+ type_declaration->declaration_free(type_declaration);
+ return ret;
+ }
+ }
+ return 0;
+}
+
+static
+int ctf_typealias_visit(int fd, int depth, struct declaration_scope *scope,
+ struct ctf_node *target, struct ctf_node *alias)
+{
+ struct declaration *type_declaration;
+ struct ctf_node *iter, *node;
+ GQuark identifier, dummy_id;
+ GString *str;
+ const char *str_c;
+ GQuark alias_q;
+ int alias_item_nr = 0;
+
+ /* See ctf_visitor_type_declarator() in the semantic validator. */
+
+ /*
+ * Create target type declaration.
+ */
+
+ type_declaration = ctf_type_declarator_visit(fd, depth,
+ &target->u.typealias_target.declaration_specifier,
+ &dummy_id, &target->u.typealias_target.type_declarators,
+ scope, NULL);
+ if (!type_declaration) {
+ fprintf(stderr, "[error] %s: problem creating type declaration\n", __func__);
+ err = -EINVAL;
+ goto error;
+ }
+ /*
+ * The semantic validator does not check whether the target is
+ * abstract or not (if it has an identifier). Check it here.
+ */
+ if (dummy_id != 0) {
+ fprintf(stderr, "[error] %s: expecting empty identifier\n", __func__);
+ err = -EINVAL;
+ goto error;
+ }
+ /*
+ * Create alias identifier.
+ */
+ str = g_string_new();
+ cds_list_for_each_entry(iter, &alias->u.typealias_alias.declaration_specifier, siblings) {
+ if (alias_item_nr != 0)
+ g_string_append(str, " ");
+ alias_item_nr++;
+
+ switch (iter->type) {
+ case NODE_TYPE_SPECIFIER:
+ switch (iter->u.type_specifier.type) {
+ case TYPESPEC_VOID:
+ g_string_append(str, "void");
+ break;
+ case TYPESPEC_CHAR:
+ g_string_append(str, "char");
+ break;
+ case TYPESPEC_SHORT:
+ g_string_append(str, "short");
+ break;
+ case TYPESPEC_INT:
+ g_string_append(str, "int");
+ break;
+ case TYPESPEC_LONG:
+ g_string_append(str, "long");
+ break;
+ case TYPESPEC_FLOAT:
+ g_string_append(str, "float");
+ break;
+ case TYPESPEC_DOUBLE:
+ g_string_append(str, "double");
+ break;
+ case TYPESPEC_SIGNED:
+ g_string_append(str, "signed");
+ break;
+ case TYPESPEC_UNSIGNED:
+ g_string_append(str, "unsigned");
+ break;
+ case TYPESPEC_BOOL:
+ g_string_append(str, "bool");
+ break;
+ case TYPESPEC_COMPLEX:
+ g_string_append(str, "_Complex");
+ break;
+ case TYPESPEC_IMAGINARY:
+ g_string_append(str, "_Imaginary");
+ break;
+ case TYPESPEC_CONST:
+ g_string_append(str, "const");
+ break;
+ case TYPESPEC_ID_TYPE:
+ if (!iter->u.type_specifier.id_type) {
+ fprintf(stderr, "[error] %s: unexpected empty ID\n", __func__);
+ err = -EINVAL;
+ goto error;
+ }
+ g_string_append(str, iter->u.type_specifier.id_type);
+ break;
+ default:
+ fprintf(stderr, "[error] %s: unknown specifier\n", __func__);
+ err = -EINVAL;
+ goto error;
+ }
+ break;
+ case NODE_ENUM:
+ if (!iter->u._enum.enum_id) {
+ fprintf(stderr, "[error] %s: unexpected empty enum ID\n", __func__);
+ err = -EINVAL;
+ goto error;
+ }
+ g_string_append(str, "enum ");
+ g_string_append(str, iter->u._enum.enum_id);
+ break;
+ case NODE_VARIANT:
+ if (!iter->u.variant.name) {
+ fprintf(stderr, "[error] %s: unexpected empty variant name\n", __func__);
+ err = -EINVAL;
+ goto error;
+ }
+ g_string_append(str, "variant ");
+ g_string_append(str, iter->u.variant.name);
+ break;
+ case NODE_STRUCT:
+ if (!iter->u._struct.name) {
+ fprintf(stderr, "[error] %s: unexpected empty variant name\n", __func__);
+ err = -EINVAL;
+ goto error;
+ }
+ g_string_append(str, "struct ");
+ g_string_append(str, iter->u._struct.name);
+ break;
+ default:
+ fprintf(stderr, "[error] %s: unexpected node type %d\n", __func__, (int) iter->type);
+ err = -EINVAL;
+ goto error;
+ }
+ }
+
+ node = _cds_list_first_entry(&alias->u.typealias_alias.type_declarators,
+ struct node, siblings) {
+ cds_list_for_each_entry(iter, &node->u.type_declarator.pointers, siblings) {
+ g_string_append(str, " *");
+ if (iter->u.pointer.const_qualifier)
+ g_string_append(str, " const");
+ }
+
+ }
+ str_c = g_string_free(str, FALSE);
+ alias_q = g_quark_from_string(str_c);
+ g_free(str_c);
+ ret = register_declaration(alias_q, type_declaration, scope);
+ if (ret)
+ goto error;
+ return 0;
+
+error:
+ type_declaration->declaration_free(type_declaration);
+ return ret;
+}
+
+static
+int ctf_struct_declaration_list_visit(int fd, int depth,
+ struct ctf_node *iter, struct declaration_struct *struct_declaration)
+{
+ struct declaration *declaration;
+ int ret;
+
+ switch (iter->type) {
+ case NODE_TYPEDEF:
+ /* For each declarator, declare type and add type to struct declaration scope */
+ ret = ctf_typedef_visit(fd, depth,
+ struct_declaration->scope,
+ &iter->u._typedef.declaration_specifier,
+ &iter->u._typedef.type_declarators);
+ if (ret)
+ return ret;
+ break;
+ case NODE_TYPEALIAS:
+ /* Declare type with declarator and add type to struct declaration scope */
+ ret = ctf_typealias_visit(fd, depth,
+ struct_declaration->scope,
+ iter->u.typealias.target,
+ iter->u.typealias.alias);
+ if (ret)
+ return ret;
+ break;
+ case NODE_STRUCT_OR_VARIANT_DECLARATION:
+ /* Add field to structure declaration */
+ ret = ctf_struct_type_declarators_visit(fd, depth,
+ struct_declaration,
+ &iter->u.struct_or_variant_declaration.declaration_specifier,
+ &iter->u.struct_or_variant_declaration.type_declarators);
+ if (ret)
+ return ret;
+ break;
+ default:
+ fprintf(stderr, "[error] %s: unexpected node type %d\n", __func__, (int) iter->type);
+ assert(0);
+ }
+ return 0;
+}
+
+static
+struct declaration_struct *ctf_declaration_struct_visit(FILE *fd,
+ int depth, const char *name, struct cds_list_head *declaration_list,
+ int has_body, struct declaration_scope *declaration_scope)
+{
+ struct declaration *declaration;
+ struct declaration_struct *struct_declaration;
+ struct ctf_node *iter;
+
+ /*
+ * For named struct (without body), lookup in
+ * declaration scope. Don't take reference on struct
+ * declaration: ref is only taken upon definition.
+ */
+ if (!has_body) {
+ assert(name);
+ struct_declaration =
+ lookup_struct_declaration(g_quark_from_string(name),
+ declaration_scope);
+ return struct_declaration;
+ } else {
+ /* For unnamed struct, create type */
+ /* For named struct (with body), create type and add to declaration scope */
+ if (name) {
+ if (lookup_struct_declaration(g_quark_from_string(name),
+ declaration_scope)) {
+
+ fprintf(stderr, "[error] %s: struct %s already declared in scope\n", name);
+ return NULL;
+ }
+ }
+ struct_declaration = struct_declaration_new(name, declaration_scope);
+ cds_list_for_each_entry(iter, declaration_list, siblings) {
+ ret = ctf_struct_declaration_list_visit(fd,
+depth + 1, iter, struct_declaration);
+ if (ret)
+ goto error;
+ }
+ if (name) {
+ ret = register_struct_declaration(g_quark_from_string(name),
+ struct_declaration,
+ declaration_scope);
+ assert(!ret);
+ }
+ return struct_declaration;
+ }
+error:
+ struct_declaration->p.declaration_free(&struct_declaration->p);
+ return NULL;
+}
+
projects / babeltrace.git / commitdiff
