STATIC mp_import_stat_t find_file(const char *file_str, uint file_len, vstr_t *dest) {
#if MICROPY_PY_SYS
// extract the list of paths
mp_uint_t path_num;
mp_obj_t *path_items;
mp_obj_list_get(mp_sys_path, &path_num, &path_items);
if (path_num == 0) {
#endif
// mp_sys_path is empty, so just use the given file name
vstr_add_strn(dest, file_str, file_len);
return stat_dir_or_file(dest);
#if MICROPY_PY_SYS
} else {
// go through each path looking for a directory or file
for (mp_uint_t i = 0; i < path_num; i++) {
vstr_reset(dest);
mp_uint_t p_len;
const char *p = mp_obj_str_get_data(path_items[i], &p_len);
if (p_len > 0) {
vstr_add_strn(dest, p, p_len);
vstr_add_char(dest, PATH_SEP_CHAR);
}
vstr_add_strn(dest, file_str, file_len);
mp_import_stat_t stat = stat_dir_or_file(dest);
if (stat != MP_IMPORT_STAT_NO_EXIST) {
return stat;
}
}
// could not find a directory or file
return MP_IMPORT_STAT_NO_EXIST;
}
#endif
}
static ssize_t vstr_chan_write(struct vstr_chan_t *self_p,
const void *buf_p,
size_t size)
{
vstr_add_strn(&self_p->string, buf_p, size);
return (size);
}
mp_obj_t mp_builtin___import__(mp_uint_t n_args, const mp_obj_t *args) {
#if DEBUG_PRINT
DEBUG_printf("__import__:\n");
for (mp_uint_t i = 0; i < n_args; i++) {
DEBUG_printf(" ");
mp_obj_print(args[i], PRINT_REPR);
DEBUG_printf("\n");
}
#endif
mp_obj_t module_name = args[0];
mp_obj_t fromtuple = mp_const_none;
mp_int_t level = 0;
if (n_args >= 4) {
fromtuple = args[3];
if (n_args >= 5) {
level = MP_OBJ_SMALL_INT_VALUE(args[4]);
}
}
mp_uint_t mod_len;
const char *mod_str = mp_obj_str_get_data(module_name, &mod_len);
if (level != 0) {
// What we want to do here is to take name of current module,
// chop <level> trailing components, and concatenate with passed-in
// module name, thus resolving relative import name into absolue.
// This even appears to be correct per
// http://legacy.python.org/dev/peps/pep-0328/#relative-imports-and-name
// "Relative imports use a module's __name__ attribute to determine that
// module's position in the package hierarchy."
level--;
mp_obj_t this_name_q = mp_obj_dict_get(mp_globals_get(), MP_OBJ_NEW_QSTR(MP_QSTR___name__));
assert(this_name_q != MP_OBJ_NULL);
#if MICROPY_CPYTHON_COMPAT
if (MP_OBJ_QSTR_VALUE(this_name_q) == MP_QSTR___main__) {
// This is a module run by -m command-line switch, get its real name from backup attribute
this_name_q = mp_obj_dict_get(mp_globals_get(), MP_OBJ_NEW_QSTR(MP_QSTR___main__));
}
#endif
mp_map_t *globals_map = mp_obj_dict_get_map(mp_globals_get());
mp_map_elem_t *elem = mp_map_lookup(globals_map, MP_OBJ_NEW_QSTR(MP_QSTR___path__), MP_MAP_LOOKUP);
bool is_pkg = (elem != NULL);
#if DEBUG_PRINT
DEBUG_printf("Current module/package: ");
mp_obj_print(this_name_q, PRINT_REPR);
DEBUG_printf(", is_package: %d", is_pkg);
DEBUG_printf("\n");
#endif
mp_uint_t this_name_l;
const char *this_name = mp_obj_str_get_data(this_name_q, &this_name_l);
const char *p = this_name + this_name_l;
if (!is_pkg) {
// We have module, but relative imports are anchored at package, so
// go there.
chop_component(this_name, &p);
}
uint dots_seen = 0;
while (level--) {
chop_component(this_name, &p);
dots_seen++;
}
if (dots_seen == 0 && level >= 1) {
// http://legacy.python.org/dev/peps/pep-0328/#relative-imports-and-name
// "If the module's name does not contain any package information
// (e.g. it is set to '__main__') then relative imports are
// resolved as if the module were a top level module, regardless
// of where the module is actually located on the file system."
// Supposedly this if catches this condition and resolve it properly
// TODO: But nobody knows for sure. This condition happens when
// package's __init__.py does something like "import .submod". So,
// maybe we should check for package here? But quote above doesn't
// talk about packages, it talks about dot-less module names.
DEBUG_printf("Warning: no dots in current module name and level>0\n");
p = this_name + this_name_l;
} else if (level != -1) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ImportError, "Invalid relative import"));
}
uint new_mod_l = (mod_len == 0 ? (size_t)(p - this_name) : (size_t)(p - this_name) + 1 + mod_len);
char *new_mod = alloca(new_mod_l);
memcpy(new_mod, this_name, p - this_name);
if (mod_len != 0) {
new_mod[p - this_name] = '.';
memcpy(new_mod + (p - this_name) + 1, mod_str, mod_len);
}
qstr new_mod_q = qstr_from_strn(new_mod, new_mod_l);
DEBUG_printf("Resolved base name for relative import: '%s'\n", qstr_str(new_mod_q));
if (new_mod_q == MP_QSTR_) {
// CPython raises SystemError
nlr_raise(mp_obj_new_exception_msg(&mp_type_ImportError, "cannot perform relative import"));
}
module_name = MP_OBJ_NEW_QSTR(new_mod_q);
mod_str = new_mod;
mod_len = new_mod_l;
}
// check if module already exists
qstr module_name_qstr = mp_obj_str_get_qstr(module_name);
mp_obj_t module_obj = mp_module_get(module_name_qstr);
if (module_obj != MP_OBJ_NULL) {
DEBUG_printf("Module already loaded\n");
// If it's not a package, return module right away
char *p = strchr(mod_str, '.');
if (p == NULL) {
return module_obj;
}
// If fromlist is not empty, return leaf module
if (fromtuple != mp_const_none) {
return module_obj;
}
// Otherwise, we need to return top-level package
qstr pkg_name = qstr_from_strn(mod_str, p - mod_str);
return mp_module_get(pkg_name);
}
DEBUG_printf("Module not yet loaded\n");
#if MICROPY_MODULE_FROZEN
mp_lexer_t *lex = mp_find_frozen_module(mod_str, mod_len);
if (lex != NULL) {
module_obj = mp_obj_new_module(module_name_qstr);
// if args[3] (fromtuple) has magic value False, set up
// this module for command-line "-m" option (set module's
// name to __main__ instead of real name).
// TODO: Duplicated below too.
if (fromtuple == mp_const_false) {
mp_obj_module_t *o = module_obj;
mp_obj_dict_store(o->globals, MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR___main__));
}
do_load_from_lexer(module_obj, lex, mod_str);
return module_obj;
}
#endif
uint last = 0;
VSTR_FIXED(path, MICROPY_ALLOC_PATH_MAX)
module_obj = MP_OBJ_NULL;
mp_obj_t top_module_obj = MP_OBJ_NULL;
mp_obj_t outer_module_obj = MP_OBJ_NULL;
uint i;
for (i = 1; i <= mod_len; i++) {
if (i == mod_len || mod_str[i] == '.') {
// create a qstr for the module name up to this depth
qstr mod_name = qstr_from_strn(mod_str, i);
DEBUG_printf("Processing module: %s\n", qstr_str(mod_name));
DEBUG_printf("Previous path: =%.*s=\n", vstr_len(&path), vstr_str(&path));
// find the file corresponding to the module name
mp_import_stat_t stat;
if (vstr_len(&path) == 0) {
// first module in the dotted-name; search for a directory or file
stat = find_file(mod_str, i, &path);
} else {
// latter module in the dotted-name; append to path
vstr_add_char(&path, PATH_SEP_CHAR);
vstr_add_strn(&path, mod_str + last, i - last);
stat = stat_dir_or_file(&path);
}
DEBUG_printf("Current path: %.*s\n", vstr_len(&path), vstr_str(&path));
if (stat == MP_IMPORT_STAT_NO_EXIST) {
#if MICROPY_MODULE_WEAK_LINKS
// check if there is a weak link to this module
if (i == mod_len) {
mp_map_elem_t *el = mp_map_lookup((mp_map_t*)&mp_builtin_module_weak_links_map, MP_OBJ_NEW_QSTR(mod_name), MP_MAP_LOOKUP);
if (el == NULL) {
goto no_exist;
}
// found weak linked module
module_obj = el->value;
} else {
no_exist:
#else
{
#endif
// couldn't find the file, so fail
if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ImportError, "module not found"));
} else {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ImportError,
"no module named '%q'", mod_name));
}
}
} else {
// found the file, so get the module
module_obj = mp_module_get(mod_name);
}
if (module_obj == MP_OBJ_NULL) {
// module not already loaded, so load it!
module_obj = mp_obj_new_module(mod_name);
// if args[3] (fromtuple) has magic value False, set up
// this module for command-line "-m" option (set module's
// name to __main__ instead of real name).
if (i == mod_len && fromtuple == mp_const_false) {
mp_obj_module_t *o = module_obj;
mp_obj_dict_store(o->globals, MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR___main__));
#if MICROPY_CPYTHON_COMPAT
// Store real name in "__main__" attribute. Choosen semi-randonly, to reuse existing qstr's.
mp_obj_dict_store(o->globals, MP_OBJ_NEW_QSTR(MP_QSTR___main__), MP_OBJ_NEW_QSTR(mod_name));
#endif
}
if (stat == MP_IMPORT_STAT_DIR) {
DEBUG_printf("%.*s is dir\n", vstr_len(&path), vstr_str(&path));
// https://docs.python.org/3/reference/import.html
// "Specifically, any module that contains a __path__ attribute is considered a package."
mp_store_attr(module_obj, MP_QSTR___path__, mp_obj_new_str(vstr_str(&path), vstr_len(&path), false));
vstr_add_char(&path, PATH_SEP_CHAR);
vstr_add_str(&path, "__init__.py");
if (mp_import_stat(vstr_null_terminated_str(&path)) != MP_IMPORT_STAT_FILE) {
vstr_cut_tail_bytes(&path, sizeof("/__init__.py") - 1); // cut off /__init__.py
mp_warning("%s is imported as namespace package", vstr_str(&path));
} else {
do_load(module_obj, &path);
vstr_cut_tail_bytes(&path, sizeof("/__init__.py") - 1); // cut off /__init__.py
}
} else { // MP_IMPORT_STAT_FILE
do_load(module_obj, &path);
// TODO: We cannot just break here, at the very least, we must execute
// trailer code below. But otherwise if there're remaining components,
// that would be (??) object path within module, not modules path within FS.
// break;
}
}
if (outer_module_obj != MP_OBJ_NULL) {
qstr s = qstr_from_strn(mod_str + last, i - last);
mp_store_attr(outer_module_obj, s, module_obj);
}
outer_module_obj = module_obj;
if (top_module_obj == MP_OBJ_NULL) {
top_module_obj = module_obj;
}
last = i + 1;
}
}
mp_obj_t mp_builtin___import__(uint n_args, mp_obj_t *args) {
#if DEBUG_PRINT
printf("__import__:\n");
for (int i = 0; i < n_args; i++) {
printf(" ");
mp_obj_print(args[i], PRINT_REPR);
printf("\n");
}
#endif
mp_obj_t module_name = args[0];
mp_obj_t fromtuple = mp_const_none;
int level = 0;
if (n_args >= 4) {
fromtuple = args[3];
if (n_args >= 5) {
level = MP_OBJ_SMALL_INT_VALUE(args[4]);
}
}
uint mod_len;
const char *mod_str = (const char*)mp_obj_str_get_data(module_name, &mod_len);
if (level != 0) {
// What we want to do here is to take name of current module,
// chop <level> trailing components, and concatenate with passed-in
// module name, thus resolving relative import name into absolue.
// This even appears to be correct per
// http://legacy.python.org/dev/peps/pep-0328/#relative-imports-and-name
// "Relative imports use a module's __name__ attribute to determine that
// module's position in the package hierarchy."
mp_obj_t this_name_q = mp_obj_dict_get(mp_globals_get(), MP_OBJ_NEW_QSTR(MP_QSTR___name__));
assert(this_name_q != MP_OBJ_NULL);
#if DEBUG_PRINT
printf("Current module: ");
mp_obj_print(this_name_q, PRINT_REPR);
printf("\n");
#endif
uint this_name_l;
const char *this_name = (const char*)mp_obj_str_get_data(this_name_q, &this_name_l);
uint dots_seen = 0;
const char *p = this_name + this_name_l - 1;
while (p > this_name) {
if (*p == '.') {
dots_seen++;
if (--level == 0) {
break;
}
}
p--;
}
if (dots_seen == 0 && level == 1) {
// http://legacy.python.org/dev/peps/pep-0328/#relative-imports-and-name
// "If the module's name does not contain any package information
// (e.g. it is set to '__main__') then relative imports are
// resolved as if the module were a top level module, regardless
// of where the module is actually located on the file system."
// Supposedly this if catches this condition and resolve it properly
// TODO: But nobody knows for sure. This condition happens when
// package's __init__.py does something like "import .submod". So,
// maybe we should check for package here? But quote above doesn't
// talk about packages, it talks about dot-less module names.
p = this_name + this_name_l;
} else if (level != 0) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ImportError, "Invalid relative import"));
}
uint new_mod_l = (mod_len == 0 ? p - this_name : p - this_name + 1 + mod_len);
char *new_mod = alloca(new_mod_l);
memcpy(new_mod, this_name, p - this_name);
if (mod_len != 0) {
new_mod[p - this_name] = '.';
memcpy(new_mod + (p - this_name) + 1, mod_str, mod_len);
}
qstr new_mod_q = qstr_from_strn(new_mod, new_mod_l);
DEBUG_printf("Resolved relative name: %s\n", qstr_str(new_mod_q));
module_name = MP_OBJ_NEW_QSTR(new_mod_q);
mod_str = new_mod;
mod_len = new_mod_l;
}
// check if module already exists
mp_obj_t module_obj = mp_module_get(mp_obj_str_get_qstr(module_name));
if (module_obj != MP_OBJ_NULL) {
DEBUG_printf("Module already loaded\n");
// If it's not a package, return module right away
char *p = strchr(mod_str, '.');
if (p == NULL) {
return module_obj;
}
// If fromlist is not empty, return leaf module
if (fromtuple != mp_const_none) {
return module_obj;
}
// Otherwise, we need to return top-level package
qstr pkg_name = qstr_from_strn(mod_str, p - mod_str);
return mp_module_get(pkg_name);
}
DEBUG_printf("Module not yet loaded\n");
uint last = 0;
VSTR_FIXED(path, MICROPY_ALLOC_PATH_MAX)
module_obj = MP_OBJ_NULL;
mp_obj_t top_module_obj = MP_OBJ_NULL;
mp_obj_t outer_module_obj = MP_OBJ_NULL;
uint i;
for (i = 1; i <= mod_len; i++) {
if (i == mod_len || mod_str[i] == '.') {
// create a qstr for the module name up to this depth
qstr mod_name = qstr_from_strn(mod_str, i);
DEBUG_printf("Processing module: %s\n", qstr_str(mod_name));
DEBUG_printf("Previous path: %s\n", vstr_str(&path));
// find the file corresponding to the module name
mp_import_stat_t stat;
if (vstr_len(&path) == 0) {
// first module in the dotted-name; search for a directory or file
stat = find_file(mod_str, i, &path);
} else {
// latter module in the dotted-name; append to path
vstr_add_char(&path, PATH_SEP_CHAR);
vstr_add_strn(&path, mod_str + last, i - last);
stat = stat_dir_or_file(&path);
}
DEBUG_printf("Current path: %s\n", vstr_str(&path));
// fail if we couldn't find the file
if (stat == MP_IMPORT_STAT_NO_EXIST) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ImportError, "No module named '%s'", qstr_str(mod_name)));
}
module_obj = mp_module_get(mod_name);
if (module_obj == MP_OBJ_NULL) {
// module not already loaded, so load it!
module_obj = mp_obj_new_module(mod_name);
if (stat == MP_IMPORT_STAT_DIR) {
DEBUG_printf("%s is dir\n", vstr_str(&path));
// https://docs.python.org/3/reference/import.html
// "Specifically, any module that contains a __path__ attribute is considered a package."
mp_store_attr(module_obj, MP_QSTR___path__, mp_obj_new_str(vstr_str(&path), vstr_len(&path), false));
vstr_add_char(&path, PATH_SEP_CHAR);
vstr_add_str(&path, "__init__.py");
if (mp_import_stat(vstr_str(&path)) != MP_IMPORT_STAT_FILE) {
vstr_cut_tail_bytes(&path, sizeof("/__init__.py") - 1); // cut off /__init__.py
printf("Notice: %s is imported as namespace package\n", vstr_str(&path));
} else {
do_load(module_obj, &path);
vstr_cut_tail_bytes(&path, sizeof("/__init__.py") - 1); // cut off /__init__.py
}
} else { // MP_IMPORT_STAT_FILE
do_load(module_obj, &path);
// TODO: We cannot just break here, at the very least, we must execute
// trailer code below. But otherwise if there're remaining components,
// that would be (??) object path within module, not modules path within FS.
// break;
}
}
if (outer_module_obj != MP_OBJ_NULL) {
qstr s = qstr_from_strn(mod_str + last, i - last);
mp_store_attr(outer_module_obj, s, module_obj);
}
outer_module_obj = module_obj;
if (top_module_obj == MP_OBJ_NULL) {
top_module_obj = module_obj;
}
last = i + 1;
}
}
if (i < mod_len) {
// we loaded a package, now need to load objects from within that package
// TODO
assert(0);
}
// If fromlist is not empty, return leaf module
if (fromtuple != mp_const_none) {
return module_obj;
}
// Otherwise, we need to return top-level package
return top_module_obj;
}
void pfenv_vstr_add_strn(void *data, const char *str, unsigned int len){
vstr_add_strn(data, str, len);
}
mp_obj_t mp_builtin___import__(size_t n_args, const mp_obj_t *args) {
#if DEBUG_PRINT
DEBUG_printf("__import__:\n");
for (size_t i = 0; i < n_args; i++) {
DEBUG_printf(" ");
mp_obj_print(args[i], PRINT_REPR);
DEBUG_printf("\n");
}
#endif
mp_obj_t module_name = args[0];
mp_obj_t fromtuple = mp_const_none;
mp_int_t level = 0;
if (n_args >= 4) {
fromtuple = args[3];
if (n_args >= 5) {
level = MP_OBJ_SMALL_INT_VALUE(args[4]);
if (level < 0) {
mp_raise_ValueError(NULL);
}
}
}
size_t mod_len;
const char *mod_str = mp_obj_str_get_data(module_name, &mod_len);
if (level != 0) {
// What we want to do here is to take name of current module,
// chop <level> trailing components, and concatenate with passed-in
// module name, thus resolving relative import name into absolute.
// This even appears to be correct per
// http://legacy.python.org/dev/peps/pep-0328/#relative-imports-and-name
// "Relative imports use a module's __name__ attribute to determine that
// module's position in the package hierarchy."
level--;
mp_obj_t this_name_q = mp_obj_dict_get(MP_OBJ_FROM_PTR(mp_globals_get()), MP_OBJ_NEW_QSTR(MP_QSTR___name__));
assert(this_name_q != MP_OBJ_NULL);
#if MICROPY_CPYTHON_COMPAT
if (MP_OBJ_QSTR_VALUE(this_name_q) == MP_QSTR___main__) {
// This is a module run by -m command-line switch, get its real name from backup attribute
this_name_q = mp_obj_dict_get(MP_OBJ_FROM_PTR(mp_globals_get()), MP_OBJ_NEW_QSTR(MP_QSTR___main__));
}
#endif
mp_map_t *globals_map = &mp_globals_get()->map;
mp_map_elem_t *elem = mp_map_lookup(globals_map, MP_OBJ_NEW_QSTR(MP_QSTR___path__), MP_MAP_LOOKUP);
bool is_pkg = (elem != NULL);
#if DEBUG_PRINT
DEBUG_printf("Current module/package: ");
mp_obj_print(this_name_q, PRINT_REPR);
DEBUG_printf(", is_package: %d", is_pkg);
DEBUG_printf("\n");
#endif
size_t this_name_l;
const char *this_name = mp_obj_str_get_data(this_name_q, &this_name_l);
const char *p = this_name + this_name_l;
if (!is_pkg) {
// We have module, but relative imports are anchored at package, so
// go there.
chop_component(this_name, &p);
}
while (level--) {
chop_component(this_name, &p);
}
// We must have some component left over to import from
if (p == this_name) {
mp_raise_ValueError("cannot perform relative import");
}
uint new_mod_l = (mod_len == 0 ? (size_t)(p - this_name) : (size_t)(p - this_name) + 1 + mod_len);
char *new_mod = mp_local_alloc(new_mod_l);
memcpy(new_mod, this_name, p - this_name);
if (mod_len != 0) {
new_mod[p - this_name] = '.';
memcpy(new_mod + (p - this_name) + 1, mod_str, mod_len);
}
qstr new_mod_q = qstr_from_strn(new_mod, new_mod_l);
mp_local_free(new_mod);
DEBUG_printf("Resolved base name for relative import: '%s'\n", qstr_str(new_mod_q));
module_name = MP_OBJ_NEW_QSTR(new_mod_q);
mod_str = qstr_str(new_mod_q);
mod_len = new_mod_l;
}
// check if module already exists
qstr module_name_qstr = mp_obj_str_get_qstr(module_name);
mp_obj_t module_obj = mp_module_get(module_name_qstr);
if (module_obj != MP_OBJ_NULL) {
DEBUG_printf("Module already loaded\n");
// If it's not a package, return module right away
char *p = strchr(mod_str, '.');
if (p == NULL) {
return module_obj;
}
// If fromlist is not empty, return leaf module
if (fromtuple != mp_const_none) {
return module_obj;
}
// Otherwise, we need to return top-level package
qstr pkg_name = qstr_from_strn(mod_str, p - mod_str);
return mp_module_get(pkg_name);
}
DEBUG_printf("Module not yet loaded\n");
uint last = 0;
VSTR_FIXED(path, MICROPY_ALLOC_PATH_MAX)
module_obj = MP_OBJ_NULL;
mp_obj_t top_module_obj = MP_OBJ_NULL;
mp_obj_t outer_module_obj = MP_OBJ_NULL;
uint i;
for (i = 1; i <= mod_len; i++) {
if (i == mod_len || mod_str[i] == '.') {
// create a qstr for the module name up to this depth
qstr mod_name = qstr_from_strn(mod_str, i);
DEBUG_printf("Processing module: %s\n", qstr_str(mod_name));
DEBUG_printf("Previous path: =%.*s=\n", vstr_len(&path), vstr_str(&path));
// find the file corresponding to the module name
mp_import_stat_t stat;
if (vstr_len(&path) == 0) {
// first module in the dotted-name; search for a directory or file
stat = find_file(mod_str, i, &path);
} else {
// latter module in the dotted-name; append to path
vstr_add_char(&path, PATH_SEP_CHAR);
vstr_add_strn(&path, mod_str + last, i - last);
stat = stat_dir_or_file(&path);
}
DEBUG_printf("Current path: %.*s\n", vstr_len(&path), vstr_str(&path));
if (stat == MP_IMPORT_STAT_NO_EXIST) {
#if MICROPY_MODULE_WEAK_LINKS
// check if there is a weak link to this module
if (i == mod_len) {
mp_map_elem_t *el = mp_map_lookup((mp_map_t*)&mp_builtin_module_weak_links_map, MP_OBJ_NEW_QSTR(mod_name), MP_MAP_LOOKUP);
if (el == NULL) {
goto no_exist;
}
// found weak linked module
module_obj = el->value;
mp_module_call_init(mod_name, module_obj);
} else {
no_exist:
#else
{
#endif
// couldn't find the file, so fail
if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
mp_raise_msg(&mp_type_ImportError, "module not found");
} else {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ImportError,
"no module named '%q'", mod_name));
}
}
} else {
// found the file, so get the module
module_obj = mp_module_get(mod_name);
}
if (module_obj == MP_OBJ_NULL) {
// module not already loaded, so load it!
module_obj = mp_obj_new_module(mod_name);
// if args[3] (fromtuple) has magic value False, set up
// this module for command-line "-m" option (set module's
// name to __main__ instead of real name). Do this only
// for *modules* however - packages never have their names
// replaced, instead they're -m'ed using a special __main__
// submodule in them. (This all apparently is done to not
// touch package name itself, which is important for future
// imports).
if (i == mod_len && fromtuple == mp_const_false && stat != MP_IMPORT_STAT_DIR) {
mp_obj_module_t *o = MP_OBJ_TO_PTR(module_obj);
mp_obj_dict_store(MP_OBJ_FROM_PTR(o->globals), MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR___main__));
#if MICROPY_CPYTHON_COMPAT
// Store module as "__main__" in the dictionary of loaded modules (returned by sys.modules).
mp_obj_dict_store(MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_loaded_modules_dict)), MP_OBJ_NEW_QSTR(MP_QSTR___main__), module_obj);
// Store real name in "__main__" attribute. Chosen semi-randonly, to reuse existing qstr's.
mp_obj_dict_store(MP_OBJ_FROM_PTR(o->globals), MP_OBJ_NEW_QSTR(MP_QSTR___main__), MP_OBJ_NEW_QSTR(mod_name));
#endif
}
if (stat == MP_IMPORT_STAT_DIR) {
DEBUG_printf("%.*s is dir\n", vstr_len(&path), vstr_str(&path));
// https://docs.python.org/3/reference/import.html
// "Specifically, any module that contains a __path__ attribute is considered a package."
mp_store_attr(module_obj, MP_QSTR___path__, mp_obj_new_str(vstr_str(&path), vstr_len(&path)));
size_t orig_path_len = path.len;
vstr_add_char(&path, PATH_SEP_CHAR);
vstr_add_str(&path, "__init__.py");
if (stat_file_py_or_mpy(&path) != MP_IMPORT_STAT_FILE) {
//mp_warning("%s is imported as namespace package", vstr_str(&path));
} else {
do_load(module_obj, &path);
}
path.len = orig_path_len;
} else { // MP_IMPORT_STAT_FILE
do_load(module_obj, &path);
// This should be the last component in the import path. If there are
// remaining components then it's an ImportError because the current path
// (the module that was just loaded) is not a package. This will be caught
// on the next iteration because the file will not exist.
}
}
if (outer_module_obj != MP_OBJ_NULL) {
qstr s = qstr_from_strn(mod_str + last, i - last);
mp_store_attr(outer_module_obj, s, module_obj);
}
outer_module_obj = module_obj;
if (top_module_obj == MP_OBJ_NULL) {
top_module_obj = module_obj;
}
last = i + 1;
}
}
void usbdbg_data_out(void *buffer, int length)
{
switch (cmd) {
case USBDBG_SCRIPT_EXEC:
// check if GC is locked before allocating memory for vstr. If GC was locked
// at least once before the script is fully uploaded xfer_bytes will be less
// than the total length (xfer_length) and the script will Not be executed.
if (!script_running && !gc_is_locked()) {
vstr_add_strn(&script_buf, buffer, length);
xfer_bytes += length;
if (xfer_bytes == xfer_length) {
// Set script ready flag
script_ready = true;
// Set script running flag
script_running = true;
// Disable IDE IRQ (re-enabled by pyexec or main).
usbdbg_set_irq_enabled(false);
// Clear interrupt traceback
mp_obj_exception_clear_traceback(mp_const_ide_interrupt);
// Interrupt running REPL
// Note: setting pendsv explicitly here because the VM is probably
// waiting in REPL and the soft interrupt flag will not be checked.
pendsv_nlr_jump_hard(mp_const_ide_interrupt);
}
}
break;
case USBDBG_TEMPLATE_SAVE: {
image_t image ={
.w = MAIN_FB()->w,
.h = MAIN_FB()->h,
.bpp = MAIN_FB()->bpp,
.pixels = MAIN_FB()->pixels
};
// null terminate the path
length = (length == 64) ? 63:length;
((char*)buffer)[length] = 0;
rectangle_t *roi = (rectangle_t*)buffer;
char *path = (char*)buffer+sizeof(rectangle_t);
imlib_save_image(&image, path, roi, 50);
// raise a flash IRQ to flush image
//NVIC->STIR = FLASH_IRQn;
break;
}
case USBDBG_DESCRIPTOR_SAVE: {
image_t image ={
.w = MAIN_FB()->w,
.h = MAIN_FB()->h,
.bpp = MAIN_FB()->bpp,
.pixels = MAIN_FB()->pixels
};
// null terminate the path
length = (length == 64) ? 63:length;
((char*)buffer)[length] = 0;
rectangle_t *roi = (rectangle_t*)buffer;
char *path = (char*)buffer+sizeof(rectangle_t);
py_image_descriptor_from_roi(&image, path, roi);
break;
}
default: /* error */
break;
}
}
mp_obj_t mp_builtin___import__(uint n_args, mp_obj_t *args) {
/*
printf("import:\n");
for (int i = 0; i < n_args; i++) {
printf(" ");
mp_obj_print(args[i], PRINT_REPR);
printf("\n");
}
*/
mp_obj_t fromtuple = mp_const_none;
int level = 0;
if (n_args >= 4) {
fromtuple = args[3];
if (n_args >= 5) {
level = MP_OBJ_SMALL_INT_VALUE(args[4]);
}
}
if (level != 0) {
nlr_jump(mp_obj_new_exception_msg(&mp_type_NotImplementedError,
"Relative import is not implemented"));
}
uint mod_len;
const char *mod_str = (const char*)mp_obj_str_get_data(args[0], &mod_len);
// check if module already exists
mp_obj_t module_obj = mp_module_get(mp_obj_str_get_qstr(args[0]));
if (module_obj != MP_OBJ_NULL) {
// If it's not a package, return module right away
char *p = strchr(mod_str, '.');
if (p == NULL) {
return module_obj;
}
// If fromlist is not empty, return leaf module
if (fromtuple != mp_const_none) {
return module_obj;
}
// Otherwise, we need to return top-level package
qstr pkg_name = qstr_from_strn(mod_str, p - mod_str);
return mp_module_get(pkg_name);
}
uint last = 0;
VSTR_FIXED(path, MICROPY_PATH_MAX)
module_obj = MP_OBJ_NULL;
mp_obj_t top_module_obj = MP_OBJ_NULL;
mp_obj_t outer_module_obj = MP_OBJ_NULL;
uint i;
for (i = 1; i <= mod_len; i++) {
if (i == mod_len || mod_str[i] == '.') {
// create a qstr for the module name up to this depth
qstr mod_name = qstr_from_strn(mod_str, i);
// find the file corresponding to the module name
mp_import_stat_t stat;
if (vstr_len(&path) == 0) {
// first module in the dotted-name; search for a directory or file
stat = find_file(mod_str, i, &path);
} else {
// latter module in the dotted-name; append to path
vstr_add_char(&path, PATH_SEP_CHAR);
vstr_add_strn(&path, mod_str + last, i - last);
stat = stat_dir_or_file(&path);
}
// fail if we couldn't find the file
if (stat == MP_IMPORT_STAT_NO_EXIST) {
nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_ImportError, "ImportError: No module named '%s'", qstr_str(mod_name)));
}
module_obj = mp_module_get(mod_name);
if (module_obj == MP_OBJ_NULL) {
// module not already loaded, so load it!
module_obj = mp_obj_new_module(mod_name);
if (stat == MP_IMPORT_STAT_DIR) {
vstr_add_char(&path, PATH_SEP_CHAR);
vstr_add_str(&path, "__init__.py");
if (mp_import_stat(vstr_str(&path)) != MP_IMPORT_STAT_FILE) {
vstr_cut_tail_bytes(&path, sizeof("/__init__.py") - 1); // cut off /__init__.py
nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_ImportError,
"Per PEP-420 a dir without __init__.py (%s) is a namespace package; "
"namespace packages are not supported", vstr_str(&path)));
}
do_load(module_obj, &path);
vstr_cut_tail_bytes(&path, sizeof("/__init__.py") - 1); // cut off /__init__.py
} else { // MP_IMPORT_STAT_FILE
do_load(module_obj, &path);
// TODO: We cannot just break here, at the very least, we must execute
// trailer code below. But otherwise if there're remaining components,
// that would be (??) object path within module, not modules path within FS.
// break;
}
}
if (outer_module_obj != MP_OBJ_NULL) {
qstr s = qstr_from_strn(mod_str + last, i - last);
mp_store_attr(outer_module_obj, s, module_obj);
}
outer_module_obj = module_obj;
if (top_module_obj == MP_OBJ_NULL) {
top_module_obj = module_obj;
}
last = i + 1;
}
}
if (i < mod_len) {
// we loaded a package, now need to load objects from within that package
// TODO
assert(0);
}
// If fromlist is not empty, return leaf module
if (fromtuple != mp_const_none) {
return module_obj;
}
// Otherwise, we need to return top-level package
return top_module_obj;
}
void usbdbg_data_out(void *buffer, int length)
{
switch (cmd) {
case USBDBG_SCRIPT_EXEC:
// check if GC is locked before allocating memory for vstr. If GC was locked
// at least once before the script is fully uploaded xfer_bytes will be less
// than the total length (xfer_length) and the script will Not be executed.
if (usbdbg_get_irq_enabled() && !gc_is_locked()) {
vstr_add_strn(&script_buf, buffer, length);
xfer_bytes += length;
if (xfer_bytes == xfer_length) {
// Set script ready flag
script_ready = 1;
// Disable IDE IRQ (re-enabled by pyexec or main).
usbdbg_set_irq_enabled(false);
// interrupt running script/REPL
mp_obj_exception_clear_traceback(mp_const_ide_interrupt);
pendsv_nlr_jump_hard(mp_const_ide_interrupt);
}
}
break;
case USBDBG_TEMPLATE_SAVE: {
image_t image ={
.w = fb->w,
.h = fb->h,
.bpp = fb->bpp,
.pixels = fb->pixels
};
// null terminate the path
length = (length == 64) ? 63:length;
((char*)buffer)[length] = 0;
rectangle_t *roi = (rectangle_t*)buffer;
char *path = (char*)buffer+sizeof(rectangle_t);
int res=imlib_save_image(&image, path, roi);
if (res != FR_OK) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, ffs_strerror(res)));
}
// raise a flash IRQ to flush image
//NVIC->STIR = FLASH_IRQn;
break;
}
case USBDBG_DESCRIPTOR_SAVE: {
image_t image ={
.w = fb->w,
.h = fb->h,
.bpp = fb->bpp,
.pixels = fb->pixels
};
// null terminate the path
length = (length == 64) ? 63:length;
((char*)buffer)[length] = 0;
rectangle_t *roi = (rectangle_t*)buffer;
char *path = (char*)buffer+sizeof(rectangle_t);
py_image_descriptor_from_roi(&image, path, roi);
break;
}
default: /* error */
break;
}
}
void usbdbg_control(void *buffer, uint8_t request, uint32_t length)
{
cmd = (enum usbdbg_cmd) request;
switch (cmd) {
case USBDBG_FW_VERSION:
xfer_bytes = 0;
xfer_length = length;
break;
case USBDBG_FRAME_SIZE:
xfer_bytes = 0;
xfer_length = length;
break;
case USBDBG_FRAME_DUMP:
xfer_bytes = 0;
xfer_length = length;
break;
case USBDBG_FRAME_LOCK:
xfer_bytes = 0;
xfer_length = length;
break;
case USBDBG_FRAME_UPDATE:
sensor_snapshot(NULL);
cmd = USBDBG_NONE;
break;
case USBDBG_SCRIPT_EXEC:
xfer_bytes = 0;
xfer_length =length;
vstr_reset(&script_buf);
break;
case USBDBG_SCRIPT_STOP:
if (usbdbg_get_irq_enabled()) {
// Disable IDE IRQ (re-enabled by pyexec or main).
usbdbg_set_irq_enabled(false);
// interrupt running code by raising an exception
mp_obj_exception_clear_traceback(mp_const_ide_interrupt);
pendsv_nlr_jump_hard(mp_const_ide_interrupt);
}
cmd = USBDBG_NONE;
break;
case USBDBG_SCRIPT_SAVE:
/* save running script */
break;
case USBDBG_TEMPLATE_SAVE:
case USBDBG_DESCRIPTOR_SAVE:
/* save template */
xfer_bytes = 0;
xfer_length =length;
break;
case USBDBG_ATTR_WRITE: {
/* write sensor attribute */
int16_t attr= *((int16_t*)buffer);
int16_t val = *((int16_t*)buffer+1);
switch (attr) {
case ATTR_CONTRAST:
sensor_set_contrast(val);
break;
case ATTR_BRIGHTNESS:
sensor_set_brightness(val);
break;
case ATTR_SATURATION:
sensor_set_saturation(val);
break;
case ATTR_GAINCEILING:
sensor_set_gainceiling(val);
break;
default:
break;
}
cmd = USBDBG_NONE;
break;
}
case USBDBG_SYS_RESET:
NVIC_SystemReset();
break;
case USBDBG_BOOT:
*((uint32_t *)0x20002000) = 0xDEADBEEF;
NVIC_SystemReset();
break;
case USBDBG_TX_BUF:
case USBDBG_TX_BUF_LEN:
xfer_bytes = 0;
xfer_length = length;
break;
default: /* error */
cmd = USBDBG_NONE;
break;
}
}
void pfenv_vstr_add_strn(void *data, const char *str, mp_uint_t len){
vstr_add_strn(data, str, len);
}
