- 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 */
- if (export->class > 0) {
- fprintf(stderr, "Assumption Violated: class not import\n");
- 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 */
- if (strcmp(iclass->class_name, "Class") || strcmp(iclass->class_package, "Core")) {
- fprintf(stderr, "Assumption Violated: class not Core.Class\n");
- return NULL;
- }
-
- /* ASSUMPTION: Package references are always imports */
- if (iclass->package >= 0) {
- fprintf(stderr, "Assumption Violated: package not import\n");
- return NULL;
- }