py/builtinimport: Populate __file__ when importing frozen or mpy files.

Note that bytecode already includes the source filename as a qstr so there
is no additional memory used by the interning operation here.

py/builtinimport.c

@@ -145,11 +145,11 @@ 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* source_name) {
+    (void)source_name;
+
     #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(source_name)));
     #endif
 
     // execute the module in its context
@@ -206,7 +206,7 @@ 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
@@ -216,7 +216,7 @@ STATIC void do_load(mp_obj_t module_obj, vstr_t *file) {
     #if MICROPY_HAS_FILE_READER && 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

tests/unix/extra_coverage.py

@@ -48,13 +48,15 @@ print(buf.write(bytearray(16)))
 
 # test basic import of frozen scripts
 import frzstr1
+print(frzstr1.__file__)
 import frzmpy1
+print(frzmpy1.__file__)
 
 # test import of frozen packages with __init__.py
 import frzstr_pkg1
-print(frzstr_pkg1.x)
+print(frzstr_pkg1.__file__, frzstr_pkg1.x)
 import frzmpy_pkg1
-print(frzmpy_pkg1.x)
+print(frzmpy_pkg1.__file__, frzmpy_pkg1.x)
 
 # test import of frozen packages without __init__.py
 from frzstr_pkg2.mod import Foo

tests/unix/extra_coverage.py.exp

@@ -94,11 +94,13 @@ OSError
 None
 None
 frzstr1
+frzstr1.py
 frzmpy1
+frzmpy1.py
 frzstr_pkg1.__init__
-1
+frzstr_pkg1/__init__.py 1
 frzmpy_pkg1.__init__
-1
+frzmpy_pkg1/__init__.py 1
 frzstr_pkg2.mod
 1
 frzmpy_pkg2.mod