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py: Add very basic implementation of dir() builtin. 

Only works on modules and class instances.
This commit is contained in:
Damien George 2014-02-02 22:07:44 +00:00
parent 0473e2790b
commit 4acb2452b3
5 changed files with 34 additions and 1 deletions
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30
py/builtin.c
View File

@ -148,6 +148,36 @@ static mp_obj_t mp_builtin_chr(mp_obj_t o_in) {
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_chr_obj, mp_builtin_chr);
static mp_obj_t mp_builtin_dir(uint n_args, const mp_obj_t *args) {
// TODO make this function more general and less of a hack
mp_map_t *map;
if (n_args == 0) {
// make a list of names in the local name space
map = rt_locals_get();
} else { // n_args == 1
// make a list of names in the given object
mp_obj_type_t *type = mp_obj_get_type(args[0]);
if (type == &module_type) {
map = mp_obj_module_get_globals(args[0]);
} else if (type->locals_dict != MP_OBJ_NULL && MP_OBJ_IS_TYPE(type->locals_dict, &dict_type)) {
map = mp_obj_dict_get_map(type->locals_dict);
} else {
return mp_obj_new_list(0, NULL);
}
}
mp_obj_t dir = mp_obj_new_list(0, NULL);
for (uint i = 0; i < map->alloc; i++) {
if (map->table[i].key != MP_OBJ_NULL) {
mp_obj_list_append(dir, map->table[i].key);
}
}
return dir;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_dir_obj, 0, 1, mp_builtin_dir);
static mp_obj_t mp_builtin_divmod(mp_obj_t o1_in, mp_obj_t o2_in) {
if (MP_OBJ_IS_SMALL_INT(o1_in) && MP_OBJ_IS_SMALL_INT(o2_in)) {
mp_small_int_t i1 = MP_OBJ_SMALL_INT_VALUE(o1_in);

1
py/builtin.h
View File

@ -8,6 +8,7 @@ MP_DECLARE_CONST_FUN_OBJ(mp_builtin_any_obj);
MP_DECLARE_CONST_FUN_OBJ(mp_builtin_bytes_obj); // Temporary hack
MP_DECLARE_CONST_FUN_OBJ(mp_builtin_callable_obj);
MP_DECLARE_CONST_FUN_OBJ(mp_builtin_chr_obj);
MP_DECLARE_CONST_FUN_OBJ(mp_builtin_dir_obj);
MP_DECLARE_CONST_FUN_OBJ(mp_builtin_divmod_obj);
MP_DECLARE_CONST_FUN_OBJ(mp_builtin_eval_obj);
MP_DECLARE_CONST_FUN_OBJ(mp_builtin_hash_obj);

2
py/objtype.c
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@ -35,7 +35,7 @@ static mp_obj_t mp_obj_class_lookup(const mp_obj_type_t *type, qstr attr) {
// search locals_dict (the dynamically created set of methods/attributes)
assert(MP_OBJ_IS_TYPE(type->locals_dict, &dict_type)); // Micro Python restriction, for now
mp_map_t *locals_map = ((void*)type->locals_dict + sizeof(mp_obj_base_t)); // XXX hack to get map object from dict object
mp_map_t *locals_map = mp_obj_dict_get_map(type->locals_dict);
mp_map_elem_t *elem = mp_map_lookup(locals_map, MP_OBJ_NEW_QSTR(attr), MP_MAP_LOOKUP);
if (elem != NULL) {
return elem->value;

1
py/qstrdefs.h
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@ -51,6 +51,7 @@ Q(callable)
Q(chr)
Q(complex)
Q(dict)
Q(dir)
Q(divmod)
Q(enumerate)
Q(eval)

1
py/runtime.c
View File

@ -141,6 +141,7 @@ void rt_init(void) {
mp_map_add_qstr(&map_builtins, MP_QSTR_bytes, (mp_obj_t)&mp_builtin_bytes_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_callable, (mp_obj_t)&mp_builtin_callable_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_chr, (mp_obj_t)&mp_builtin_chr_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_dir, (mp_obj_t)&mp_builtin_dir_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_divmod, (mp_obj_t)&mp_builtin_divmod_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_eval, (mp_obj_t)&mp_builtin_eval_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_hash, (mp_obj_t)&mp_builtin_hash_obj);