+long upkg_export_find(struct upkg *pkg, const char *name)
+{
+ /* This is wrong.
+ * Export names are not necessarily unique within a package. */
+ for (unsigned i = 0; i < pkg->export_count; i++) {
+ struct upkg_export *export = &pkg->priv->exports[i];
+ if (strcmp(export->name, name) == 0) {
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+unsigned long upkg_export_flags(struct upkg *pkg, unsigned long idx)
+{
+ if (idx < pkg->export_count)
+ return pkg->priv->exports[idx].flags;
+ return 0;
+}
+
+const char *upkg_export_name(struct upkg *pkg, unsigned long idx)
+{
+ if (idx < pkg->export_count)
+ return pkg->priv->exports[idx].name;
+ return NULL;
+}
+
+const char *upkg_export_class(struct upkg *pkg, unsigned long idx,
+ const char **package)
+{
+ struct upkg_export *export;
+ struct upkg_import *iclass, *ipackage;
+ unsigned long pkg_idx;
+
+ if (idx >= pkg->export_count)
+ return NULL;
+
+ export = &pkg->priv->exports[idx];
+
+ /* Assumption: class references are always imports. */
+ format_assert(export->class <= 0, return NULL);
+
+ /* Get the class. */
+ if (export->class == 0) {
+ if (package) *package = "Core";
+ return "Class";
+ }
+
+ pkg_idx = -(export->class + 1);
+ if (pkg_idx >= pkg->import_count)
+ return NULL;
+ iclass = &pkg->priv->imports[pkg_idx];
+
+ /* Assumption: class references are always Core.Class. */
+ format_assert(!strcmp(iclass->class_package, "Core"), return NULL);
+ format_assert(!strcmp(iclass->class_name, "Class"), return NULL);
+
+ /* Assumption: package references are always imports. */
+ format_assert(iclass->package <= 0, return NULL);
+
+ /* Get the package. */
+ pkg_idx = -(iclass->package + 1);
+ if (pkg_idx >= pkg->import_count)
+ return NULL;
+ ipackage = &pkg->priv->imports[pkg_idx];
+
+ /* Assumption: package references are always Core.Package. */
+ format_assert(!strcmp(ipackage->class_package, "Core"), return NULL);
+ format_assert(!strcmp(ipackage->class_name, "Package"), return NULL);
+
+ if (package) *package = ipackage->object_name;
+ return iclass->object_name;
+}
+