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circuitpython/py/builtin.c

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include <assert.h>
#include "mpconfig.h"
#include "nlr.h"
#include "misc.h"
#include "qstr.h"
#include "obj.h"
#include "objstr.h"
#include "runtime0.h"
#include "runtime.h"
#include "builtin.h"
#include "stream.h"
#include "pfenv.h"
#if MICROPY_PY_BUILTINS_FLOAT
#include <math.h>
#endif
// args[0] is function from class body
// args[1] is class name
// args[2:] are base objects
STATIC mp_obj_t mp_builtin___build_class__(mp_uint_t n_args, const mp_obj_t *args) {
assert(2 <= n_args);
// set the new classes __locals__ object
mp_obj_dict_t *old_locals = mp_locals_get();
mp_obj_t class_locals = mp_obj_new_dict(0);
mp_locals_set(class_locals);
// call the class code
mp_obj_t cell = mp_call_function_0(args[0]);
// restore old __locals__ object
mp_locals_set(old_locals);
// get the class type (meta object) from the base objects
mp_obj_t meta;
if (n_args == 2) {
// no explicit bases, so use 'type'
meta = (mp_obj_t)&mp_type_type;
} else {
// use type of first base object
meta = mp_obj_get_type(args[2]);
}
// TODO do proper metaclass resolution for multiple base objects
// create the new class using a call to the meta object
mp_obj_t meta_args[3];
meta_args[0] = args[1]; // class name
meta_args[1] = mp_obj_new_tuple(n_args - 2, args + 2); // tuple of bases
meta_args[2] = class_locals; // dict of members
mp_obj_t new_class = mp_call_function_n_kw(meta, 3, 0, meta_args);
// store into cell if neede
if (cell != mp_const_none) {
mp_obj_cell_set(cell, new_class);
}
return new_class;
}
MP_DEFINE_CONST_FUN_OBJ_VAR(mp_builtin___build_class___obj, 2, mp_builtin___build_class__);
STATIC mp_obj_t mp_builtin___repl_print__(mp_obj_t o) {
if (o != mp_const_none) {
mp_obj_print(o, PRINT_REPR);
printf("\n");
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin___repl_print___obj, mp_builtin___repl_print__);
STATIC mp_obj_t mp_builtin_abs(mp_obj_t o_in) {
if (MP_OBJ_IS_SMALL_INT(o_in)) {
mp_int_t val = MP_OBJ_SMALL_INT_VALUE(o_in);
if (val < 0) {
val = -val;
}
return MP_OBJ_NEW_SMALL_INT(val);
#if MICROPY_PY_BUILTINS_FLOAT
} else if (MP_OBJ_IS_TYPE(o_in, &mp_type_float)) {
mp_float_t value = mp_obj_float_get(o_in);
// TODO check for NaN etc
if (value < 0) {
return mp_obj_new_float(-value);
} else {
return o_in;
}
#if MICROPY_PY_BUILTINS_COMPLEX
} else if (MP_OBJ_IS_TYPE(o_in, &mp_type_complex)) {
mp_float_t real, imag;
mp_obj_complex_get(o_in, &real, &imag);
return mp_obj_new_float(MICROPY_FLOAT_C_FUN(sqrt)(real*real + imag*imag));
#endif
#endif
} else {
assert(0);
return mp_const_none;
}
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_abs_obj, mp_builtin_abs);
STATIC mp_obj_t mp_builtin_all(mp_obj_t o_in) {
mp_obj_t iterable = mp_getiter(o_in);
mp_obj_t item;
while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
if (!mp_obj_is_true(item)) {
return mp_const_false;
}
}
return mp_const_true;
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_all_obj, mp_builtin_all);
STATIC mp_obj_t mp_builtin_any(mp_obj_t o_in) {
mp_obj_t iterable = mp_getiter(o_in);
mp_obj_t item;
while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
if (mp_obj_is_true(item)) {
return mp_const_true;
}
}
return mp_const_false;
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_any_obj, mp_builtin_any);
STATIC mp_obj_t mp_builtin_bin(mp_obj_t o_in) {
mp_obj_t args[] = { MP_OBJ_NEW_QSTR(MP_QSTR__brace_open__colon__hash_b_brace_close_), o_in };
return mp_obj_str_format(MP_ARRAY_SIZE(args), args);
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_bin_obj, mp_builtin_bin);
STATIC mp_obj_t mp_builtin_callable(mp_obj_t o_in) {
if (mp_obj_is_callable(o_in)) {
return mp_const_true;
} else {
return mp_const_false;
}
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_callable_obj, mp_builtin_callable);
STATIC mp_obj_t mp_builtin_chr(mp_obj_t o_in) {
#if MICROPY_PY_BUILTINS_STR_UNICODE
mp_uint_t c = mp_obj_get_int(o_in);
char str[4];
int len = 0;
if (c < 0x80) {
*str = c; len = 1;
} else if (c < 0x800) {
str[0] = (c >> 6) | 0xC0;
str[1] = (c & 0x3F) | 0x80;
len = 2;
} else if (c < 0x10000) {
str[0] = (c >> 12) | 0xE0;
str[1] = ((c >> 6) & 0x3F) | 0x80;
str[2] = (c & 0x3F) | 0x80;
len = 3;
} else if (c < 0x110000) {
str[0] = (c >> 18) | 0xF0;
str[1] = ((c >> 12) & 0x3F) | 0x80;
str[2] = ((c >> 6) & 0x3F) | 0x80;
str[3] = (c & 0x3F) | 0x80;
len = 4;
} else {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "chr() arg not in range(0x110000)"));
}
return mp_obj_new_str(str, len, true);
#else
mp_int_t ord = mp_obj_get_int(o_in);
if (0 <= ord && ord <= 0x10ffff) {
char str[1] = {ord};
return mp_obj_new_str(str, 1, true);
} else {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "chr() arg not in range(0x110000)"));
}
#endif
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_chr_obj, mp_builtin_chr);
STATIC mp_obj_t mp_builtin_dir(mp_uint_t n_args, const mp_obj_t *args) {
// TODO make this function more general and less of a hack
mp_obj_dict_t *dict = NULL;
if (n_args == 0) {
// make a list of names in the local name space
dict = mp_locals_get();
} else { // n_args == 1
// make a list of names in the given object
if (MP_OBJ_IS_TYPE(args[0], &mp_type_module)) {
dict = mp_obj_module_get_globals(args[0]);
} else {
mp_obj_type_t *type;
if (MP_OBJ_IS_TYPE(args[0], &mp_type_type)) {
type = args[0];
} else {
type = mp_obj_get_type(args[0]);
}
if (type->locals_dict != MP_OBJ_NULL && MP_OBJ_IS_TYPE(type->locals_dict, &mp_type_dict)) {
dict = type->locals_dict;
}
}
}
mp_obj_t dir = mp_obj_new_list(0, NULL);
if (dict != NULL) {
for (mp_uint_t i = 0; i < dict->map.alloc; i++) {
if (MP_MAP_SLOT_IS_FILLED(&dict->map, i)) {
mp_obj_list_append(dir, dict->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_int_t i1 = MP_OBJ_SMALL_INT_VALUE(o1_in);
mp_int_t i2 = MP_OBJ_SMALL_INT_VALUE(o2_in);
mp_obj_t args[2];
args[0] = MP_OBJ_NEW_SMALL_INT(i1 / i2);
args[1] = MP_OBJ_NEW_SMALL_INT(i1 % i2);
return mp_obj_new_tuple(2, args);
} else {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "unsupported operand type(s) for divmod(): '%s' and '%s'", mp_obj_get_type_str(o1_in), mp_obj_get_type_str(o2_in)));
}
}
MP_DEFINE_CONST_FUN_OBJ_2(mp_builtin_divmod_obj, mp_builtin_divmod);
STATIC mp_obj_t mp_builtin_hash(mp_obj_t o_in) {
// TODO hash will generally overflow small integer; can we safely truncate it?
return mp_obj_new_int(mp_obj_hash(o_in));
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_hash_obj, mp_builtin_hash);
STATIC mp_obj_t mp_builtin_hex(mp_obj_t o_in) {
return mp_binary_op(MP_BINARY_OP_MODULO, MP_OBJ_NEW_QSTR(MP_QSTR__percent__hash_x), o_in);
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_hex_obj, mp_builtin_hex);
STATIC mp_obj_t mp_builtin_iter(mp_obj_t o_in) {
return mp_getiter(o_in);
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_iter_obj, mp_builtin_iter);
STATIC mp_obj_t mp_builtin_min_max(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kwargs, mp_uint_t op) {
mp_map_elem_t *key_elem = mp_map_lookup(kwargs, MP_OBJ_NEW_QSTR(MP_QSTR_key), MP_MAP_LOOKUP);
mp_obj_t key_fn = key_elem == NULL ? MP_OBJ_NULL : key_elem->value;
if (n_args == 1) {
// given an iterable
mp_obj_t iterable = mp_getiter(args[0]);
mp_obj_t best_key = MP_OBJ_NULL;
mp_obj_t best_obj = MP_OBJ_NULL;
mp_obj_t item;
while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
mp_obj_t key = key_fn == MP_OBJ_NULL ? item : mp_call_function_1(key_fn, item);
if (best_obj == MP_OBJ_NULL || (mp_binary_op(op, key, best_key) == mp_const_true)) {
best_key = key;
best_obj = item;
}
}
if (best_obj == MP_OBJ_NULL) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "arg is an empty sequence"));
}
return best_obj;
} else {
// given many args
mp_obj_t best_key = MP_OBJ_NULL;
mp_obj_t best_obj = MP_OBJ_NULL;
for (mp_uint_t i = 0; i < n_args; i++) {
mp_obj_t key = key_fn == MP_OBJ_NULL ? args[i] : mp_call_function_1(key_fn, args[i]);
if (best_obj == MP_OBJ_NULL || (mp_binary_op(op, key, best_key) == mp_const_true)) {
best_key = key;
best_obj = args[i];
}
}
return best_obj;
}
}
STATIC mp_obj_t mp_builtin_max(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
return mp_builtin_min_max(n_args, args, kwargs, MP_BINARY_OP_MORE);
}
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_max_obj, 1, mp_builtin_max);
STATIC mp_obj_t mp_builtin_min(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
return mp_builtin_min_max(n_args, args, kwargs, MP_BINARY_OP_LESS);
}
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_min_obj, 1, mp_builtin_min);
STATIC mp_obj_t mp_builtin_next(mp_obj_t o) {
mp_obj_t ret = mp_iternext_allow_raise(o);
if (ret == MP_OBJ_STOP_ITERATION) {
nlr_raise(mp_obj_new_exception(&mp_type_StopIteration));
} else {
return ret;
}
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_next_obj, mp_builtin_next);
STATIC mp_obj_t mp_builtin_oct(mp_obj_t o_in) {
return mp_binary_op(MP_BINARY_OP_MODULO, MP_OBJ_NEW_QSTR(MP_QSTR__percent__hash_o), o_in);
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_oct_obj, mp_builtin_oct);
STATIC mp_obj_t mp_builtin_ord(mp_obj_t o_in) {
mp_uint_t len;
const char *str = mp_obj_str_get_data(o_in, &len);
#if MICROPY_PY_BUILTINS_STR_UNICODE
mp_uint_t charlen = unichar_charlen(str, len);
if (charlen == 1) {
if (MP_OBJ_IS_STR(o_in) && UTF8_IS_NONASCII(*str)) {
mp_int_t ord = *str++ & 0x7F;
for (mp_int_t mask = 0x40; ord & mask; mask >>= 1) {
ord &= ~mask;
}
while (UTF8_IS_CONT(*str)) {
ord = (ord << 6) | (*str++ & 0x3F);
}
return mp_obj_new_int(ord);
} else {
return mp_obj_new_int(((const byte*)str)[0]);
}
} else {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "ord() expected a character, but string of length %d found", charlen));
}
#else
if (len == 1) {
// don't sign extend when converting to ord
return mp_obj_new_int(((const byte*)str)[0]);
} else {
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "ord() expected a character, but string of length %d found", len));
}
#endif
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_ord_obj, mp_builtin_ord);
STATIC mp_obj_t mp_builtin_pow(mp_uint_t n_args, const mp_obj_t *args) {
assert(2 <= n_args && n_args <= 3);
switch (n_args) {
case 2: return mp_binary_op(MP_BINARY_OP_POWER, args[0], args[1]);
default: return mp_binary_op(MP_BINARY_OP_MODULO, mp_binary_op(MP_BINARY_OP_POWER, args[0], args[1]), args[2]); // TODO optimise...
}
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_pow_obj, 2, 3, mp_builtin_pow);
STATIC mp_obj_t mp_builtin_print(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
mp_map_elem_t *sep_elem = mp_map_lookup(kwargs, MP_OBJ_NEW_QSTR(MP_QSTR_sep), MP_MAP_LOOKUP);
mp_map_elem_t *end_elem = mp_map_lookup(kwargs, MP_OBJ_NEW_QSTR(MP_QSTR_end), MP_MAP_LOOKUP);
const char *sep_data = " ";
mp_uint_t sep_len = 1;
const char *end_data = "\n";
mp_uint_t end_len = 1;
if (sep_elem != NULL && sep_elem->value != mp_const_none) {
sep_data = mp_obj_str_get_data(sep_elem->value, &sep_len);
}
if (end_elem != NULL && end_elem->value != mp_const_none) {
end_data = mp_obj_str_get_data(end_elem->value, &end_len);
}
#if MICROPY_PY_IO
mp_obj_t stream_obj = &mp_sys_stdout_obj;
mp_map_elem_t *file_elem = mp_map_lookup(kwargs, MP_OBJ_NEW_QSTR(MP_QSTR_file), MP_MAP_LOOKUP);
if (file_elem != NULL && file_elem->value != mp_const_none) {
stream_obj = file_elem->value;
}
pfenv_t pfenv;
pfenv.data = stream_obj;
pfenv.print_strn = (void (*)(void *, const char *, unsigned int))mp_stream_write;
#endif
for (int i = 0; i < n_args; i++) {
if (i > 0) {
#if MICROPY_PY_IO
mp_stream_write(stream_obj, sep_data, sep_len);
#else
printf("%.*s", sep_len, sep_data);
#endif
}
#if MICROPY_PY_IO
mp_obj_print_helper((void (*)(void *env, const char *fmt, ...))pfenv_printf, &pfenv, args[i], PRINT_STR);
#else
mp_obj_print(args[i], PRINT_STR);
#endif
}
#if MICROPY_PY_IO
mp_stream_write(stream_obj, end_data, end_len);
#else
printf("%.*s", end_len, end_data);
#endif
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_print_obj, 0, mp_builtin_print);
STATIC mp_obj_t mp_builtin_repr(mp_obj_t o_in) {
vstr_t *vstr = vstr_new();
mp_obj_print_helper((void (*)(void *env, const char *fmt, ...))vstr_printf, vstr, o_in, PRINT_REPR);
mp_obj_t s = mp_obj_new_str(vstr->buf, vstr->len, false);
vstr_free(vstr);
return s;
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_repr_obj, mp_builtin_repr);
STATIC mp_obj_t mp_builtin_sum(mp_uint_t n_args, const mp_obj_t *args) {
assert(1 <= n_args && n_args <= 2);
mp_obj_t value;
switch (n_args) {
case 1: value = mp_obj_new_int(0); break;
default: value = args[1]; break;
}
mp_obj_t iterable = mp_getiter(args[0]);
mp_obj_t item;
while ((item = mp_iternext(iterable)) != MP_OBJ_STOP_ITERATION) {
value = mp_binary_op(MP_BINARY_OP_ADD, value, item);
}
return value;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_sum_obj, 1, 2, mp_builtin_sum);
STATIC mp_obj_t mp_builtin_sorted(mp_uint_t n_args, const mp_obj_t *args, mp_map_t *kwargs) {
assert(n_args >= 1);
if (n_args > 1) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError,
"must use keyword argument for key function"));
}
mp_obj_t self = mp_type_list.make_new((mp_obj_t)&mp_type_list, 1, 0, args);
mp_obj_list_sort(1, &self, kwargs);
return self;
}
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_sorted_obj, 1, mp_builtin_sorted);
STATIC mp_obj_t mp_builtin_id(mp_obj_t o_in) {
mp_int_t id = (mp_int_t)o_in;
if (!MP_OBJ_IS_OBJ(o_in)) {
return mp_obj_new_int(id);
} else if (id >= 0) {
// Many OSes and CPUs have affinity for putting "user" memories
// into low half of address space, and "system" into upper half.
// We're going to take advantage of that and return small int
// (signed) for such "user" addresses.
return MP_OBJ_NEW_SMALL_INT(id);
} else {
// If that didn't work, well, let's return long int, just as
// a (big) positve value, so it will never clash with the range
// of small int returned in previous case.
return mp_obj_new_int_from_uint((mp_uint_t)id);
}
}
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_id_obj, mp_builtin_id);
// See mp_load_attr() if making any changes
STATIC inline mp_obj_t mp_load_attr_default(mp_obj_t base, qstr attr, mp_obj_t defval) {
mp_obj_t dest[2];
// use load_method, raising or not raising exception
((defval == MP_OBJ_NULL) ? mp_load_method : mp_load_method_maybe)(base, attr, dest);
if (dest[0] == MP_OBJ_NULL) {
return defval;
} else if (dest[1] == MP_OBJ_NULL) {
// load_method returned just a normal attribute
return dest[0];
} else {
// load_method returned a method, so build a bound method object
return mp_obj_new_bound_meth(dest[0], dest[1]);
}
}
STATIC mp_obj_t mp_builtin_getattr(mp_uint_t n_args, const mp_obj_t *args) {
mp_obj_t attr = args[1];
if (MP_OBJ_IS_TYPE(attr, &mp_type_str)) {
attr = mp_obj_str_intern(attr);
} else if (!MP_OBJ_IS_QSTR(attr)) {
nlr_raise(mp_obj_new_exception_msg(&mp_type_TypeError, "string required"));
}
mp_obj_t defval = MP_OBJ_NULL;
if (n_args > 2) {
defval = args[2];
}
return mp_load_attr_default(args[0], MP_OBJ_QSTR_VALUE(attr), defval);
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mp_builtin_getattr_obj, 2, 3, mp_builtin_getattr);
STATIC mp_obj_t mp_builtin_hasattr(mp_obj_t object_in, mp_obj_t attr_in) {
assert(MP_OBJ_IS_QSTR(attr_in));
mp_obj_t dest[2];
// TODO: https://docs.python.org/3/library/functions.html?highlight=hasattr#hasattr
// explicitly says "This is implemented by calling getattr(object, name) and seeing
// whether it raises an AttributeError or not.", so we should explicitly wrap this
// in nlr_push and handle exception.
mp_load_method_maybe(object_in, MP_OBJ_QSTR_VALUE(attr_in), dest);
return MP_BOOL(dest[0] != MP_OBJ_NULL);
}
MP_DEFINE_CONST_FUN_OBJ_2(mp_builtin_hasattr_obj, mp_builtin_hasattr);
// These are defined in terms of MicroPython API functions right away
MP_DEFINE_CONST_FUN_OBJ_1(mp_builtin_len_obj, mp_obj_len);
MP_DEFINE_CONST_FUN_OBJ_0(mp_builtin_globals_obj, mp_globals_get);
MP_DEFINE_CONST_FUN_OBJ_0(mp_builtin_locals_obj, mp_locals_get);
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