// this is a classmethod
STATIC mp_obj_t dict_fromkeys(uint n_args, const mp_obj_t *args) {
assert(2 <= n_args && n_args <= 3);
mp_obj_t iter = mp_getiter(args[1]);
mp_obj_t len = mp_obj_len_maybe(iter);
mp_obj_t value = mp_const_none;
mp_obj_t next = NULL;
mp_obj_dict_t *self = NULL;
if (n_args > 2) {
value = args[2];
}
if (len == MP_OBJ_NULL) {
/* object's type doesn't have a __len__ slot */
self = mp_obj_new_dict(0);
} else {
self = mp_obj_new_dict(MP_OBJ_SMALL_INT_VALUE(len));
}
while ((next = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) {
mp_map_lookup(&self->map, next, MP_MAP_LOOKUP_ADD_IF_NOT_FOUND)->value = value;
}
return self;
}
STATIC mp_obj_t make_func(mp_obj_t rettype_in, void *func, mp_obj_t argtypes_in) {
const char *rettype = mp_obj_str_get_str(rettype_in);
const char *argtypes = mp_obj_str_get_str(argtypes_in);
mp_int_t nparams = MP_OBJ_SMALL_INT_VALUE(mp_obj_len_maybe(argtypes_in));
mp_obj_ffifunc_t *o = m_new_obj_var(mp_obj_ffifunc_t, ffi_type*, nparams);
o->base.type = &ffifunc_type;
o->func = func;
o->rettype = *rettype;
o->argtypes = argtypes;
mp_obj_iter_buf_t iter_buf;
mp_obj_t iterable = mp_getiter(argtypes_in, &iter_buf);
mp_obj_t item;
int i = 0;
while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
o->params[i++] = get_ffi_type(item);
}
int res = ffi_prep_cif(&o->cif, FFI_DEFAULT_ABI, nparams, char2ffi_type(*rettype), o->params);
if (res != FFI_OK) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "Error in ffi_prep_cif"));
}
return MP_OBJ_FROM_PTR(o);
}
STATIC mp_obj_t ffimod_func(uint n_args, const mp_obj_t *args) {
mp_obj_ffimod_t *self = args[0];
const char *rettype = mp_obj_str_get_str(args[1]);
const char *symname = mp_obj_str_get_str(args[2]);
void *sym = dlsym(self->handle, symname);
if (sym == NULL) {
nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_OSError, "[Errno %d]", errno));
}
int nparams = MP_OBJ_SMALL_INT_VALUE(mp_obj_len_maybe(args[3]));
mp_obj_ffifunc_t *o = m_new_obj_var(mp_obj_ffifunc_t, ffi_type*, nparams);
o->base.type = &ffifunc_type;
o->func = sym;
o->rettype = *rettype;
mp_obj_t iterable = mp_getiter(args[3]);
mp_obj_t item;
int i = 0;
while ((item = mp_iternext(iterable)) != MP_OBJ_NULL) {
o->params[i++] = get_ffi_type(item);
}
int res = ffi_prep_cif(&o->cif, FFI_DEFAULT_ABI, nparams, char2ffi_type(*rettype), o->params);
if (res != FFI_OK) {
nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_OSError, "Error in ffi_prep_cif"));
}
return o;
}
STATIC mp_obj_t mod_ffi_callback(mp_obj_t rettype_in, mp_obj_t func_in, mp_obj_t paramtypes_in) {
const char *rettype = mp_obj_str_get_str(rettype_in);
mp_int_t nparams = MP_OBJ_SMALL_INT_VALUE(mp_obj_len_maybe(paramtypes_in));
mp_obj_fficallback_t *o = m_new_obj_var(mp_obj_fficallback_t, ffi_type*, nparams);
o->base.type = &fficallback_type;
o->clo = ffi_closure_alloc(sizeof(ffi_closure), &o->func);
o->rettype = *rettype;
mp_obj_t iterable = mp_getiter(paramtypes_in);
mp_obj_t item;
int i = 0;
while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
o->params[i++] = get_ffi_type(item);
}
int res = ffi_prep_cif(&o->cif, FFI_DEFAULT_ABI, nparams, char2ffi_type(*rettype), o->params);
if (res != FFI_OK) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "Error in ffi_prep_cif"));
}
res = ffi_prep_closure_loc(o->clo, &o->cif, call_py_func, MP_OBJ_TO_PTR(func_in), o->func);
if (res != FFI_OK) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "ffi_prep_closure_loc"));
}
return MP_OBJ_FROM_PTR(o);
}
static mp_obj_t mod_ffi_callback(mp_obj_t rettype_in, mp_obj_t func_in, mp_obj_t paramtypes_in) {
const char *rettype = mp_obj_str_get_str(rettype_in);
int nparams = MP_OBJ_SMALL_INT_VALUE(mp_obj_len_maybe(paramtypes_in));
mp_obj_fficallback_t *o = m_new_obj_var(mp_obj_fficallback_t, ffi_type*, nparams);
o->base.type = &fficallback_type;
o->clo = ffi_closure_alloc(sizeof(ffi_closure), &o->func);
o->rettype = *rettype;
mp_obj_t iterable = rt_getiter(paramtypes_in);
mp_obj_t item;
int i = 0;
while ((item = rt_iternext(iterable)) != mp_const_stop_iteration) {
o->params[i++] = get_ffi_type(item);
}
int res = ffi_prep_cif(&o->cif, FFI_DEFAULT_ABI, nparams, char2ffi_type(*rettype), o->params);
if (res != FFI_OK) {
nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_OSError, "Error in ffi_prep_cif"));
}
res = ffi_prep_closure_loc(o->clo, &o->cif, call_py_func, func_in, o->func);
if (res != FFI_OK) {
nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_OSError, "ffi_prep_closure_loc"));
}
return o;
}
// this is a classmethod
STATIC mp_obj_t dict_fromkeys(size_t n_args, const mp_obj_t *args) {
mp_obj_t iter = mp_getiter(args[1], NULL);
mp_obj_t value = mp_const_none;
mp_obj_t next = MP_OBJ_NULL;
if (n_args > 2) {
value = args[2];
}
// optimisation to allocate result based on len of argument
mp_obj_t self_out;
mp_obj_t len = mp_obj_len_maybe(args[1]);
if (len == MP_OBJ_NULL) {
/* object's type doesn't have a __len__ slot */
self_out = mp_obj_new_dict(0);
} else {
self_out = mp_obj_new_dict(MP_OBJ_SMALL_INT_VALUE(len));
}
mp_obj_dict_t *self = MP_OBJ_TO_PTR(self_out);
while ((next = mp_iternext(iter)) != MP_OBJ_STOP_ITERATION) {
mp_map_lookup(&self->map, next, MP_MAP_LOOKUP_ADD_IF_NOT_FOUND)->value = value;
}
return self_out;
}
STATIC mp_obj_t array_construct(char typecode, mp_obj_t initializer) {
uint len;
// Try to create array of exact len if initializer len is known
mp_obj_t len_in = mp_obj_len_maybe(initializer);
if (len_in == MP_OBJ_NULL) {
len = 0;
} else {
len = MP_OBJ_SMALL_INT_VALUE(len_in);
}
mp_obj_array_t *array = array_new(typecode, len);
mp_obj_t iterable = mp_getiter(initializer);
mp_obj_t item;
int i = 0;
while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
if (len == 0) {
array_append(array, item);
} else {
mp_binary_set_val_array(typecode, array->items, i++, item);
}
}
return array;
}
bool mp_obj_is_true(mp_obj_t arg) {
if (arg == mp_const_false) {
return 0;
} else if (arg == mp_const_true) {
return 1;
} else if (arg == mp_const_none) {
return 0;
} else if (MP_OBJ_IS_SMALL_INT(arg)) {
if (MP_OBJ_SMALL_INT_VALUE(arg) == 0) {
return 0;
} else {
return 1;
}
} else {
mp_obj_type_t *type = mp_obj_get_type(arg);
if (type->unary_op != NULL) {
mp_obj_t result = type->unary_op(MP_UNARY_OP_BOOL, arg);
if (result != MP_OBJ_NULL) {
return result == mp_const_true;
}
}
mp_obj_t len = mp_obj_len_maybe(arg);
if (len != MP_OBJ_NULL) {
// obj has a length, truth determined if len != 0
return len != MP_OBJ_NEW_SMALL_INT(0);
} else {
// any other obj is true per Python semantics
return 1;
}
}
}
STATIC mp_obj_t mp_builtin_len(mp_obj_t o_in) {
mp_obj_t len = mp_obj_len_maybe(o_in);
if (len == NULL) {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "object of type '%s' has no len()", mp_obj_get_type_str(o_in)));
} else {
return len;
}
}
// will raise a TypeError if object has no length
mp_obj_t mp_obj_len(mp_obj_t o_in) {
mp_obj_t len = mp_obj_len_maybe(o_in);
if (len == MP_OBJ_NULL) {
if (MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_TERSE) {
mp_raise_TypeError("object has no len");
} else {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError,
"object of type '%s' has no len()", mp_obj_get_type_str(o_in)));
}
} else {
return len;
}
}
STATIC mp_obj_t array_construct(char typecode, mp_obj_t initializer) {
// bytearrays can be raw-initialised from anything with the buffer protocol
// other arrays can only be raw-initialised from bytes and bytearray objects
mp_buffer_info_t bufinfo;
if (((MICROPY_PY_BUILTINS_BYTEARRAY
&& typecode == BYTEARRAY_TYPECODE)
|| (MICROPY_PY_ARRAY
&& (MP_OBJ_IS_TYPE(initializer, &mp_type_bytes)
|| (MICROPY_PY_BUILTINS_BYTEARRAY && MP_OBJ_IS_TYPE(initializer, &mp_type_bytearray)))))
&& mp_get_buffer(initializer, &bufinfo, MP_BUFFER_READ)) {
// construct array from raw bytes
// we round-down the len to make it a multiple of sz (CPython raises error)
size_t sz = mp_binary_get_size('@', typecode, NULL);
mp_uint_t len = bufinfo.len / sz;
mp_obj_array_t *o = array_new(typecode, len);
memcpy(o->items, bufinfo.buf, len * sz);
return o;
}
mp_uint_t len;
// Try to create array of exact len if initializer len is known
mp_obj_t len_in = mp_obj_len_maybe(initializer);
if (len_in == MP_OBJ_NULL) {
len = 0;
} else {
len = MP_OBJ_SMALL_INT_VALUE(len_in);
}
mp_obj_array_t *array = array_new(typecode, len);
mp_obj_t iterable = mp_getiter(initializer);
mp_obj_t item;
mp_uint_t i = 0;
while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
if (len == 0) {
array_append(array, item);
} else {
mp_binary_set_val_array(typecode, array->items, i++, item);
}
}
return array;
}
