gh-117953: Work Relative to Specific Extension Kinds in the Import Machinery (gh-118205)

This change will make some later changes simpler.

1 files changed, 31 insertions, 1 deletions

diff --git a/Include/internal/pycore_importdl.h b/Include/internal/pycore_importdl.h
index adb8916..b0af28d 100644
--- a/Include/internal/pycore_importdl.h
+++ b/Include/internal/pycore_importdl.h
@@ -15,8 +15,15 @@ extern "C" {
 extern const char *_PyImport_DynLoadFiletab[];
 
 
-typedef PyObject *(*PyModInitFunction)(void);
+typedef enum ext_module_kind {
+    _Py_ext_module_kind_UNKNOWN = 0,
+    _Py_ext_module_kind_SINGLEPHASE = 1,
+    _Py_ext_module_kind_MULTIPHASE = 2,
+    _Py_ext_module_kind_INVALID = 3,
+} _Py_ext_module_kind;
+
 
+/* Input for loading an extension module. */
 struct _Py_ext_module_loader_info {
     PyObject *filename;
 #ifndef MS_WINDOWS
@@ -43,10 +50,33 @@ extern int _Py_ext_module_loader_info_init_from_spec(
     struct _Py_ext_module_loader_info *info,
     PyObject *spec);
 
+/* The result from running an extension module's init function. */
 struct _Py_ext_module_loader_result {
     PyModuleDef *def;
     PyObject *module;
+    _Py_ext_module_kind kind;
+    struct _Py_ext_module_loader_result_error *err;
+    struct _Py_ext_module_loader_result_error {
+        enum _Py_ext_module_loader_result_error_kind {
+            _Py_ext_module_loader_result_EXCEPTION = 0,
+            _Py_ext_module_loader_result_ERR_MISSING = 1,
+            _Py_ext_module_loader_result_ERR_UNREPORTED_EXC = 2,
+            _Py_ext_module_loader_result_ERR_UNINITIALIZED = 3,
+            _Py_ext_module_loader_result_ERR_NONASCII_NOT_MULTIPHASE = 4,
+            _Py_ext_module_loader_result_ERR_NOT_MODULE = 5,
+            _Py_ext_module_loader_result_ERR_MISSING_DEF = 6,
+        } kind;
+        PyObject *exc;
+    } _err;
 };
+extern void _Py_ext_module_loader_result_clear(
+    struct _Py_ext_module_loader_result *res);
+extern void _Py_ext_module_loader_result_apply_error(
+    struct _Py_ext_module_loader_result *res,
+    const char *name);
+
+/* The module init function. */
+typedef PyObject *(*PyModInitFunction)(void);
 extern PyModInitFunction _PyImport_GetModInitFunc(
     struct _Py_ext_module_loader_info *info,
     FILE *fp);