py/builtinimport: Set __file__ on MPY modules

This sets the __file__ property on MPY modules like how it's done on pure python modules.

Author: notro

py/builtinimport.c

@@ -155,11 +155,9 @@ STATIC void do_load_from_lexer(mp_obj_t module_obj, mp_lexer_t *lex) {
 #endif
 
 #if MICROPY_PERSISTENT_CODE_LOAD || MICROPY_MODULE_FROZEN_MPY
-STATIC void do_execute_raw_code(mp_obj_t module_obj, mp_raw_code_t *raw_code) {
+STATIC void do_execute_raw_code(mp_obj_t module_obj, mp_raw_code_t *raw_code, const char *filename) {
     #if MICROPY_PY___FILE__
-    // TODO
-    //qstr source_name = lex->source_name;
-    //mp_store_attr(module_obj, MP_QSTR___file__, MP_OBJ_NEW_QSTR(source_name));
+    mp_store_attr(module_obj, MP_QSTR___file__, MP_OBJ_NEW_QSTR(qstr_from_str(filename)));
     #endif
 
     // execute the module in its context
@@ -222,7 +220,7 @@ STATIC void do_load(mp_obj_t module_obj, vstr_t *file) {
         // its data) in the list of frozen files, execute it.
         #if MICROPY_MODULE_FROZEN_MPY
         if (frozen_type == MP_FROZEN_MPY) {
-            do_execute_raw_code(module_obj, modref);
+            do_execute_raw_code(module_obj, modref, file_str);
             return;
         }
         #endif
@@ -235,7 +233,7 @@ STATIC void do_load(mp_obj_t module_obj, vstr_t *file) {
     #if MICROPY_PERSISTENT_CODE_LOAD
     if (file_str[file->len - 3] == 'm') {
         mp_raw_code_t *raw_code = mp_raw_code_load_file(file_str);
-        do_execute_raw_code(module_obj, raw_code);
+        do_execute_raw_code(module_obj, raw_code, file_str);
         return;
     }
     #endif