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circuitpython/py/runtime.c

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// in principle, rt_xxx functions are called only by vm/native/viper and make assumptions about args
// mp_xxx functions are safer and can be called by anyone
// note that rt_assign_xxx are called only from emit*, and maybe we can rename them to reflect this
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "nlr.h"
#include "misc.h"
#include "mpconfig.h"
#include "qstr.h"
#include "obj.h"
#include "runtime0.h"
#include "runtime.h"
#include "map.h"
#include "builtin.h"
#include "objarray.h"
#include "bc.h"
#if 0 // print debugging info
#define DEBUG_PRINT (1)
#define WRITE_CODE (1)
#define DEBUG_printf(args...) printf(args)
#define DEBUG_OP_printf(args...) printf(args)
#else // don't print debugging info
#define DEBUG_printf(args...) (void)0
#define DEBUG_OP_printf(args...) (void)0
#endif
// locals and globals need to be pointers because they can be the same in outer module scope
static mp_map_t *map_locals;
static mp_map_t *map_globals;
static mp_map_t map_builtins;
static mp_map_t map_loaded_modules; // TODO: expose as sys.modules
typedef enum {
MP_CODE_NONE,
MP_CODE_BYTE,
MP_CODE_NATIVE,
MP_CODE_INLINE_ASM,
} mp_code_kind_t;
typedef struct _mp_code_t {
struct {
mp_code_kind_t kind : 8;
bool is_generator : 1;
};
struct {
uint n_args : 16;
uint n_state : 16;
};
union {
struct {
byte *code;
uint len;
} u_byte;
struct {
mp_fun_t fun;
} u_native;
struct {
void *fun;
} u_inline_asm;
};
} mp_code_t;
static uint next_unique_code_id;
static machine_uint_t unique_codes_alloc = 0;
static mp_code_t *unique_codes = NULL;
#ifdef WRITE_CODE
FILE *fp_write_code = NULL;
#endif
// a good optimising compiler will inline this if necessary
static void mp_map_add_qstr(mp_map_t *map, qstr qstr, mp_obj_t value) {
mp_map_lookup(map, MP_OBJ_NEW_QSTR(qstr), MP_MAP_LOOKUP_ADD_IF_NOT_FOUND)->value = value;
}
void rt_init(void) {
// locals = globals for outer module (see Objects/frameobject.c/PyFrame_New())
map_locals = map_globals = mp_map_new(1);
mp_map_add_qstr(map_globals, MP_QSTR___name__, MP_OBJ_NEW_QSTR(MP_QSTR___main__));
// init built-in hash table
mp_map_init(&map_builtins, 3);
// init loaded modules table
mp_map_init(&map_loaded_modules, 3);
// built-in exceptions (TODO, make these proper classes, and const if possible)
mp_map_add_qstr(&map_builtins, MP_QSTR_AttributeError, mp_obj_new_exception(MP_QSTR_AttributeError));
mp_map_add_qstr(&map_builtins, MP_QSTR_IndexError, mp_obj_new_exception(MP_QSTR_IndexError));
mp_map_add_qstr(&map_builtins, MP_QSTR_KeyError, mp_obj_new_exception(MP_QSTR_KeyError));
mp_map_add_qstr(&map_builtins, MP_QSTR_NameError, mp_obj_new_exception(MP_QSTR_NameError));
mp_map_add_qstr(&map_builtins, MP_QSTR_TypeError, mp_obj_new_exception(MP_QSTR_TypeError));
mp_map_add_qstr(&map_builtins, MP_QSTR_SyntaxError, mp_obj_new_exception(MP_QSTR_SyntaxError));
mp_map_add_qstr(&map_builtins, MP_QSTR_ValueError, mp_obj_new_exception(MP_QSTR_ValueError));
// Somehow CPython managed to have OverflowError not inherit from ValueError ;-/
// TODO: For MICROPY_CPYTHON_COMPAT==0 use ValueError to avoid exc proliferation
mp_map_add_qstr(&map_builtins, MP_QSTR_OverflowError, mp_obj_new_exception(MP_QSTR_OverflowError));
mp_map_add_qstr(&map_builtins, MP_QSTR_OSError, mp_obj_new_exception(MP_QSTR_OSError));
mp_map_add_qstr(&map_builtins, MP_QSTR_AssertionError, mp_obj_new_exception(MP_QSTR_AssertionError));
mp_map_add_qstr(&map_builtins, MP_QSTR_StopIteration, mp_obj_new_exception(MP_QSTR_StopIteration));
// built-in objects
mp_map_add_qstr(&map_builtins, MP_QSTR_Ellipsis, mp_const_ellipsis);
// built-in core functions
mp_map_add_qstr(&map_builtins, MP_QSTR___build_class__, (mp_obj_t)&mp_builtin___build_class___obj);
mp_map_add_qstr(&map_builtins, MP_QSTR___repl_print__, (mp_obj_t)&mp_builtin___repl_print___obj);
// built-in types
mp_map_add_qstr(&map_builtins, MP_QSTR_bool, (mp_obj_t)&bool_type);
#if MICROPY_ENABLE_FLOAT
mp_map_add_qstr(&map_builtins, MP_QSTR_complex, (mp_obj_t)&complex_type);
#endif
mp_map_add_qstr(&map_builtins, MP_QSTR_dict, (mp_obj_t)&dict_type);
mp_map_add_qstr(&map_builtins, MP_QSTR_enumerate, (mp_obj_t)&enumerate_type);
mp_map_add_qstr(&map_builtins, MP_QSTR_filter, (mp_obj_t)&filter_type);
#if MICROPY_ENABLE_FLOAT
mp_map_add_qstr(&map_builtins, MP_QSTR_float, (mp_obj_t)&float_type);
#endif
mp_map_add_qstr(&map_builtins, MP_QSTR_int, (mp_obj_t)&int_type);
mp_map_add_qstr(&map_builtins, MP_QSTR_list, (mp_obj_t)&list_type);
mp_map_add_qstr(&map_builtins, MP_QSTR_map, (mp_obj_t)&map_type);
mp_map_add_qstr(&map_builtins, MP_QSTR_set, (mp_obj_t)&set_type);
mp_map_add_qstr(&map_builtins, MP_QSTR_tuple, (mp_obj_t)&tuple_type);
mp_map_add_qstr(&map_builtins, MP_QSTR_type, (mp_obj_t)&mp_const_type);
mp_map_add_qstr(&map_builtins, MP_QSTR_zip, (mp_obj_t)&zip_type);
mp_obj_t m_array = mp_obj_new_module(MP_QSTR_array);
rt_store_attr(m_array, MP_QSTR_array, (mp_obj_t)&array_type);
// built-in user functions
mp_map_add_qstr(&map_builtins, MP_QSTR_abs, (mp_obj_t)&mp_builtin_abs_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_all, (mp_obj_t)&mp_builtin_all_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_any, (mp_obj_t)&mp_builtin_any_obj);
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_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);
mp_map_add_qstr(&map_builtins, MP_QSTR_isinstance, (mp_obj_t)&mp_builtin_isinstance_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_issubclass, (mp_obj_t)&mp_builtin_issubclass_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_iter, (mp_obj_t)&mp_builtin_iter_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_len, (mp_obj_t)&mp_builtin_len_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_max, (mp_obj_t)&mp_builtin_max_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_min, (mp_obj_t)&mp_builtin_min_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_next, (mp_obj_t)&mp_builtin_next_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_ord, (mp_obj_t)&mp_builtin_ord_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_pow, (mp_obj_t)&mp_builtin_pow_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_print, (mp_obj_t)&mp_builtin_print_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_range, (mp_obj_t)&mp_builtin_range_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_repr, (mp_obj_t)&mp_builtin_repr_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_sorted, (mp_obj_t)&mp_builtin_sorted_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_sum, (mp_obj_t)&mp_builtin_sum_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_str, (mp_obj_t)&mp_builtin_str_obj);
mp_map_add_qstr(&map_builtins, MP_QSTR_bytearray, (mp_obj_t)&mp_builtin_bytearray_obj);
#if MICROPY_CPYTHON_COMPAT
// Precreate sys module, so "import sys" didn't throw exceptions.
mp_obj_new_module(QSTR_FROM_STR_STATIC("sys"));
#endif
mp_module_micropython_init();
// TODO: wastes one mp_code_t structure in mem
next_unique_code_id = 1; // 0 indicates "no code"
unique_codes_alloc = 0;
unique_codes = NULL;
#ifdef WRITE_CODE
fp_write_code = fopen("out-code", "wb");
#endif
}
void rt_deinit(void) {
m_del(mp_code_t, unique_codes, unique_codes_alloc);
mp_map_free(map_globals);
mp_map_deinit(&map_loaded_modules);
mp_map_deinit(&map_builtins);
#ifdef WRITE_CODE
if (fp_write_code != NULL) {
fclose(fp_write_code);
}
#endif
}
uint rt_get_unique_code_id(void) {
return next_unique_code_id++;
}
static void alloc_unique_codes(void) {
if (next_unique_code_id > unique_codes_alloc) {
DEBUG_printf("allocate more unique codes: " UINT_FMT " -> %u\n", unique_codes_alloc, next_unique_code_id);
// increase size of unique_codes table
unique_codes = m_renew(mp_code_t, unique_codes, unique_codes_alloc, next_unique_code_id);
for (uint i = unique_codes_alloc; i < next_unique_code_id; i++) {
unique_codes[i].kind = MP_CODE_NONE;
}
unique_codes_alloc = next_unique_code_id;
}
}
void rt_assign_byte_code(uint unique_code_id, byte *code, uint len, int n_args, int n_locals, int n_stack, bool is_generator) {
alloc_unique_codes();
assert(1 <= unique_code_id && unique_code_id < next_unique_code_id && unique_codes[unique_code_id].kind == MP_CODE_NONE);
unique_codes[unique_code_id].kind = MP_CODE_BYTE;
unique_codes[unique_code_id].is_generator = is_generator;
unique_codes[unique_code_id].n_args = n_args;
unique_codes[unique_code_id].n_state = n_locals + n_stack;
unique_codes[unique_code_id].u_byte.code = code;
unique_codes[unique_code_id].u_byte.len = len;
//printf("byte code: %d bytes\n", len);
#ifdef DEBUG_PRINT
DEBUG_printf("assign byte code: id=%d code=%p len=%u n_args=%d n_locals=%d n_stack=%d\n", unique_code_id, code, len, n_args, n_locals, n_stack);
for (int i = 0; i < 128 && i < len; i++) {
if (i > 0 && i % 16 == 0) {
DEBUG_printf("\n");
}
DEBUG_printf(" %02x", code[i]);
}
DEBUG_printf("\n");
#if MICROPY_DEBUG_PRINTERS
mp_byte_code_print(code, len);
#endif
#ifdef WRITE_CODE
if (fp_write_code != NULL) {
fwrite(code, len, 1, fp_write_code);
fflush(fp_write_code);
}
#endif
#endif
}
void rt_assign_native_code(uint unique_code_id, void *fun, uint len, int n_args) {
alloc_unique_codes();
assert(1 <= unique_code_id && unique_code_id < next_unique_code_id && unique_codes[unique_code_id].kind == MP_CODE_NONE);
unique_codes[unique_code_id].kind = MP_CODE_NATIVE;
unique_codes[unique_code_id].is_generator = false;
unique_codes[unique_code_id].n_args = n_args;
unique_codes[unique_code_id].n_state = 0;
unique_codes[unique_code_id].u_native.fun = fun;
//printf("native code: %d bytes\n", len);
#ifdef DEBUG_PRINT
DEBUG_printf("assign native code: id=%d fun=%p len=%u n_args=%d\n", unique_code_id, fun, len, n_args);
byte *fun_data = (byte*)(((machine_uint_t)fun) & (~1)); // need to clear lower bit in case it's thumb code
for (int i = 0; i < 128 && i < len; i++) {
if (i > 0 && i % 16 == 0) {
DEBUG_printf("\n");
}
DEBUG_printf(" %02x", fun_data[i]);
}
DEBUG_printf("\n");
#ifdef WRITE_CODE
if (fp_write_code != NULL) {
fwrite(fun_data, len, 1, fp_write_code);
fflush(fp_write_code);
}
#endif
#endif
}
void rt_assign_inline_asm_code(uint unique_code_id, void *fun, uint len, int n_args) {
alloc_unique_codes();
assert(1 <= unique_code_id && unique_code_id < next_unique_code_id && unique_codes[unique_code_id].kind == MP_CODE_NONE);
unique_codes[unique_code_id].kind = MP_CODE_INLINE_ASM;
unique_codes[unique_code_id].is_generator = false;
unique_codes[unique_code_id].n_args = n_args;
unique_codes[unique_code_id].n_state = 0;
unique_codes[unique_code_id].u_inline_asm.fun = fun;
#ifdef DEBUG_PRINT
DEBUG_printf("assign inline asm code: id=%d fun=%p len=%u n_args=%d\n", unique_code_id, fun, len, n_args);
byte *fun_data = (byte*)(((machine_uint_t)fun) & (~1)); // need to clear lower bit in case it's thumb code
for (int i = 0; i < 128 && i < len; i++) {
if (i > 0 && i % 16 == 0) {
DEBUG_printf("\n");
}
DEBUG_printf(" %02x", fun_data[i]);
}
DEBUG_printf("\n");
#ifdef WRITE_CODE
if (fp_write_code != NULL) {
fwrite(fun_data, len, 1, fp_write_code);
}
#endif
#endif
}
int rt_is_true(mp_obj_t arg) {
DEBUG_OP_printf("is true %p\n", 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(RT_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;
}
}
}
mp_obj_t rt_list_append(mp_obj_t self_in, mp_obj_t arg) {
return mp_obj_list_append(self_in, arg);
}
#define PARSE_DEC_IN_INTG (1)
#define PARSE_DEC_IN_FRAC (2)
#define PARSE_DEC_IN_EXP (3)
mp_obj_t rt_load_const_dec(qstr qstr) {
#if MICROPY_ENABLE_FLOAT
DEBUG_OP_printf("load '%s'\n", qstr_str(qstr));
const char *s = qstr_str(qstr);
int in = PARSE_DEC_IN_INTG;
mp_float_t dec_val = 0;
bool exp_neg = false;
int exp_val = 0;
int exp_extra = 0;
bool imag = false;
for (; *s; s++) {
int dig = *s;
if ('0' <= dig && dig <= '9') {
dig -= '0';
if (in == PARSE_DEC_IN_EXP) {
exp_val = 10 * exp_val + dig;
} else {
dec_val = 10 * dec_val + dig;
if (in == PARSE_DEC_IN_FRAC) {
exp_extra -= 1;
}
}
} else if (in == PARSE_DEC_IN_INTG && dig == '.') {
in = PARSE_DEC_IN_FRAC;
} else if (in != PARSE_DEC_IN_EXP && (dig == 'E' || dig == 'e')) {
in = PARSE_DEC_IN_EXP;
if (s[1] == '+') {
s++;
} else if (s[1] == '-') {
s++;
exp_neg = true;
}
} else if (dig == 'J' || dig == 'j') {
s++;
imag = true;
break;
} else {
// unknown character
break;
}
}
if (*s != 0) {
nlr_jump(mp_obj_new_exception_msg(MP_QSTR_SyntaxError, "invalid syntax for number"));
}
if (exp_neg) {
exp_val = -exp_val;
}
exp_val += exp_extra;
for (; exp_val > 0; exp_val--) {
dec_val *= 10;
}
for (; exp_val < 0; exp_val++) {
dec_val *= 0.1;
}
if (imag) {
return mp_obj_new_complex(0, dec_val);
} else {
return mp_obj_new_float(dec_val);
}
#else
nlr_jump(mp_obj_new_exception_msg(MP_QSTR_SyntaxError, "decimal numbers not supported"));
#endif
}
mp_obj_t rt_load_const_str(qstr qstr) {
DEBUG_OP_printf("load '%s'\n", qstr_str(qstr));
return MP_OBJ_NEW_QSTR(qstr);
}
mp_obj_t rt_load_const_bytes(qstr qstr) {
DEBUG_OP_printf("load b'%s'\n", qstr_str(qstr));
uint len;
const byte *data = qstr_data(qstr, &len);
return mp_obj_new_bytes(data, len);
}
mp_obj_t rt_load_name(qstr qstr) {
// logic: search locals, globals, builtins
DEBUG_OP_printf("load name %s\n", qstr_str(qstr));
mp_map_elem_t *elem = mp_map_lookup(map_locals, MP_OBJ_NEW_QSTR(qstr), MP_MAP_LOOKUP);
if (elem == NULL) {
elem = mp_map_lookup(map_globals, MP_OBJ_NEW_QSTR(qstr), MP_MAP_LOOKUP);
if (elem == NULL) {
elem = mp_map_lookup(&map_builtins, MP_OBJ_NEW_QSTR(qstr), MP_MAP_LOOKUP);
if (elem == NULL) {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_NameError, "name '%s' is not defined", qstr_str(qstr)));
}
}
}
return elem->value;
}
mp_obj_t rt_load_global(qstr qstr) {
// logic: search globals, builtins
DEBUG_OP_printf("load global %s\n", qstr_str(qstr));
mp_map_elem_t *elem = mp_map_lookup(map_globals, MP_OBJ_NEW_QSTR(qstr), MP_MAP_LOOKUP);
if (elem == NULL) {
elem = mp_map_lookup(&map_builtins, MP_OBJ_NEW_QSTR(qstr), MP_MAP_LOOKUP);
if (elem == NULL) {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_NameError, "name '%s' is not defined", qstr_str(qstr)));
}
}
return elem->value;
}
mp_obj_t rt_load_build_class(void) {
DEBUG_OP_printf("load_build_class\n");
mp_map_elem_t *elem = mp_map_lookup(&map_builtins, MP_OBJ_NEW_QSTR(MP_QSTR___build_class__), MP_MAP_LOOKUP);
if (elem == NULL) {
nlr_jump(mp_obj_new_exception_msg(MP_QSTR_NameError, "name '__build_class__' is not defined"));
}
return elem->value;
}
mp_obj_t rt_get_cell(mp_obj_t cell) {
return mp_obj_cell_get(cell);
}
void rt_set_cell(mp_obj_t cell, mp_obj_t val) {
mp_obj_cell_set(cell, val);
}
void rt_store_name(qstr qstr, mp_obj_t obj) {
DEBUG_OP_printf("store name %s <- %p\n", qstr_str(qstr), obj);
mp_map_lookup(map_locals, MP_OBJ_NEW_QSTR(qstr), MP_MAP_LOOKUP_ADD_IF_NOT_FOUND)->value = obj;
}
void rt_store_global(qstr qstr, mp_obj_t obj) {
DEBUG_OP_printf("store global %s <- %p\n", qstr_str(qstr), obj);
mp_map_lookup(map_globals, MP_OBJ_NEW_QSTR(qstr), MP_MAP_LOOKUP_ADD_IF_NOT_FOUND)->value = obj;
}
mp_obj_t rt_unary_op(int op, mp_obj_t arg) {
DEBUG_OP_printf("unary %d %p\n", op, arg);
if (MP_OBJ_IS_SMALL_INT(arg)) {
mp_small_int_t val = MP_OBJ_SMALL_INT_VALUE(arg);
switch (op) {
case RT_UNARY_OP_BOOL: return MP_BOOL(val != 0);
case RT_UNARY_OP_POSITIVE: break;
case RT_UNARY_OP_NEGATIVE: val = -val; break;
case RT_UNARY_OP_INVERT: val = ~val; break;
default: assert(0); val = 0;
}
if (MP_OBJ_FITS_SMALL_INT(val)) {
return MP_OBJ_NEW_SMALL_INT(val);
}
return mp_obj_new_int(val);
} else {
mp_obj_type_t *type = mp_obj_get_type(arg);
if (type->unary_op != NULL) {
mp_obj_t result = type->unary_op(op, arg);
if (result != NULL) {
return result;
}
}
// TODO specify in error message what the operator is
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "bad operand type for unary operator: '%s'", type->name));
}
}
mp_obj_t rt_binary_op(int op, mp_obj_t lhs, mp_obj_t rhs) {
DEBUG_OP_printf("binary %d %p %p\n", op, lhs, rhs);
// TODO correctly distinguish inplace operators for mutable objects
// lookup logic that CPython uses for +=:
// check for implemented +=
// then check for implemented +
// then check for implemented seq.inplace_concat
// then check for implemented seq.concat
// then fail
// note that list does not implement + or +=, so that inplace_concat is reached first for +=
// deal with is, is not
if (op == RT_COMPARE_OP_IS) {
// TODO: may need to handle strings specially, CPython appears to
// assume all strings are interned (so "is" == "==" for strings)
return MP_BOOL(lhs == rhs);
}
if (op == RT_COMPARE_OP_IS_NOT) {
// TODO: may need to handle strings specially, CPython appears to
// assume all strings are interned (so "is" == "==" for strings)
return MP_BOOL(lhs != rhs);
}
// deal with == and != for all types
if (op == RT_COMPARE_OP_EQUAL || op == RT_COMPARE_OP_NOT_EQUAL) {
if (mp_obj_equal(lhs, rhs)) {
if (op == RT_COMPARE_OP_EQUAL) {
return mp_const_true;
} else {
return mp_const_false;
}
} else {
if (op == RT_COMPARE_OP_EQUAL) {
return mp_const_false;
} else {
return mp_const_true;
}
}
}
// deal with exception_match for all types
if (op == RT_COMPARE_OP_EXCEPTION_MATCH) {
// TODO properly! at the moment it just compares the exception identifier for equality
if (MP_OBJ_IS_TYPE(lhs, &exception_type) && MP_OBJ_IS_TYPE(rhs, &exception_type)) {
if (mp_obj_exception_get_type(lhs) == mp_obj_exception_get_type(rhs)) {
return mp_const_true;
} else {
return mp_const_false;
}
}
}
if (MP_OBJ_IS_SMALL_INT(lhs)) {
mp_small_int_t lhs_val = MP_OBJ_SMALL_INT_VALUE(lhs);
if (MP_OBJ_IS_SMALL_INT(rhs)) {
mp_small_int_t rhs_val = MP_OBJ_SMALL_INT_VALUE(rhs);
switch (op) {
case RT_BINARY_OP_OR:
case RT_BINARY_OP_INPLACE_OR: lhs_val |= rhs_val; break;
case RT_BINARY_OP_XOR:
case RT_BINARY_OP_INPLACE_XOR: lhs_val ^= rhs_val; break;
case RT_BINARY_OP_AND:
case RT_BINARY_OP_INPLACE_AND: lhs_val &= rhs_val; break;
case RT_BINARY_OP_LSHIFT:
case RT_BINARY_OP_INPLACE_LSHIFT: lhs_val <<= rhs_val; break;
case RT_BINARY_OP_RSHIFT:
case RT_BINARY_OP_INPLACE_RSHIFT: lhs_val >>= rhs_val; break;
case RT_BINARY_OP_ADD:
case RT_BINARY_OP_INPLACE_ADD: lhs_val += rhs_val; break;
case RT_BINARY_OP_SUBTRACT:
case RT_BINARY_OP_INPLACE_SUBTRACT: lhs_val -= rhs_val; break;
case RT_BINARY_OP_MULTIPLY:
case RT_BINARY_OP_INPLACE_MULTIPLY: lhs_val *= rhs_val; break;
case RT_BINARY_OP_FLOOR_DIVIDE:
case RT_BINARY_OP_INPLACE_FLOOR_DIVIDE: lhs_val /= rhs_val; break;
#if MICROPY_ENABLE_FLOAT
case RT_BINARY_OP_TRUE_DIVIDE:
case RT_BINARY_OP_INPLACE_TRUE_DIVIDE: return mp_obj_new_float((mp_float_t)lhs_val / (mp_float_t)rhs_val);
#endif
// TODO implement modulo as specified by Python
case RT_BINARY_OP_MODULO:
case RT_BINARY_OP_INPLACE_MODULO: lhs_val %= rhs_val; break;
// TODO check for negative power, and overflow
case RT_BINARY_OP_POWER:
case RT_BINARY_OP_INPLACE_POWER:
{
int ans = 1;
while (rhs_val > 0) {
if (rhs_val & 1) {
ans *= lhs_val;
}
lhs_val *= lhs_val;
rhs_val /= 2;
}
lhs_val = ans;
break;
}
case RT_COMPARE_OP_LESS: return MP_BOOL(lhs_val < rhs_val); break;
case RT_COMPARE_OP_MORE: return MP_BOOL(lhs_val > rhs_val); break;
case RT_COMPARE_OP_LESS_EQUAL: return MP_BOOL(lhs_val <= rhs_val); break;
case RT_COMPARE_OP_MORE_EQUAL: return MP_BOOL(lhs_val >= rhs_val); break;
default: assert(0);
}
// TODO: We just should make mp_obj_new_int() inline and use that
if (MP_OBJ_FITS_SMALL_INT(lhs_val)) {
return MP_OBJ_NEW_SMALL_INT(lhs_val);
}
return mp_obj_new_int(lhs_val);
#if MICROPY_ENABLE_FLOAT
} else if (MP_OBJ_IS_TYPE(rhs, &float_type)) {
return mp_obj_float_binary_op(op, lhs_val, rhs);
} else if (MP_OBJ_IS_TYPE(rhs, &complex_type)) {
return mp_obj_complex_binary_op(op, lhs_val, 0, rhs);
#endif
}
}
/* deal with `in` and `not in`
*
* NOTE `a in b` is `b.__contains__(a)`, hence why the generic dispatch
* needs to go below
*/
if (op == RT_COMPARE_OP_IN || op == RT_COMPARE_OP_NOT_IN) {
mp_obj_type_t *type = mp_obj_get_type(rhs);
if (type->binary_op != NULL) {
mp_obj_t res = type->binary_op(op, rhs, lhs);
if (res != NULL) {
return res;
}
}
if (type->getiter != NULL) {
/* second attempt, walk the iterator */
mp_obj_t next = NULL;
mp_obj_t iter = rt_getiter(rhs);
while ((next = rt_iternext(iter)) != mp_const_stop_iteration) {
if (mp_obj_equal(next, lhs)) {
return MP_BOOL(op == RT_COMPARE_OP_IN);
}
}
return MP_BOOL(op != RT_COMPARE_OP_IN);
}
nlr_jump(mp_obj_new_exception_msg_varg(
MP_QSTR_TypeError, "'%s' object is not iterable",
mp_obj_get_type_str(rhs)));
return mp_const_none;
}
// generic binary_op supplied by type
mp_obj_type_t *type = mp_obj_get_type(lhs);
if (type->binary_op != NULL) {
mp_obj_t result = type->binary_op(op, lhs, rhs);
if (result != MP_OBJ_NULL) {
return result;
}
}
// TODO implement dispatch for reverse binary ops
// TODO specify in error message what the operator is
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError,
"unsupported operand types for binary operator: '%s', '%s'",
mp_obj_get_type_str(lhs), mp_obj_get_type_str(rhs)));
return mp_const_none;
}
mp_obj_t rt_make_function_from_id(int unique_code_id) {
DEBUG_OP_printf("make_function_from_id %d\n", unique_code_id);
if (unique_code_id < 1 || unique_code_id >= next_unique_code_id) {
// illegal code id
return mp_const_none;
}
// make the function, depending on the code kind
mp_code_t *c = &unique_codes[unique_code_id];
mp_obj_t fun;
switch (c->kind) {
case MP_CODE_BYTE:
fun = mp_obj_new_fun_bc(c->n_args, c->n_state, c->u_byte.code);
break;
case MP_CODE_NATIVE:
fun = rt_make_function_n(c->n_args, c->u_native.fun);
break;
case MP_CODE_INLINE_ASM:
fun = mp_obj_new_fun_asm(c->n_args, c->u_inline_asm.fun);
break;
default:
assert(0);
fun = mp_const_none;
}
// check for generator functions and if so wrap in generator object
if (c->is_generator) {
fun = mp_obj_new_gen_wrap(fun);
}
return fun;
}
mp_obj_t rt_make_closure_from_id(int unique_code_id, mp_obj_t closure_tuple) {
DEBUG_OP_printf("make_closure_from_id %d\n", unique_code_id);
// make function object
mp_obj_t ffun = rt_make_function_from_id(unique_code_id);
// wrap function in closure object
return mp_obj_new_closure(ffun, closure_tuple);
}
mp_obj_t rt_call_function_0(mp_obj_t fun) {
return rt_call_function_n_kw(fun, 0, 0, NULL);
}
mp_obj_t rt_call_function_1(mp_obj_t fun, mp_obj_t arg) {
return rt_call_function_n_kw(fun, 1, 0, &arg);
}
mp_obj_t rt_call_function_2(mp_obj_t fun, mp_obj_t arg1, mp_obj_t arg2) {
mp_obj_t args[2];
args[0] = arg1;
args[1] = arg2;
return rt_call_function_n_kw(fun, 2, 0, args);
}
// args contains, eg: arg0 arg1 key0 value0 key1 value1
mp_obj_t rt_call_function_n_kw(mp_obj_t fun_in, uint n_args, uint n_kw, const mp_obj_t *args) {
// TODO improve this: fun object can specify its type and we parse here the arguments,
// passing to the function arrays of fixed and keyword arguments
DEBUG_OP_printf("calling function %p(n_args=%d, n_kw=%d, args=%p)\n", fun_in, n_args, n_kw, args);
if (MP_OBJ_IS_SMALL_INT(fun_in)) {
nlr_jump(mp_obj_new_exception_msg(MP_QSTR_TypeError, "'int' object is not callable"));
} else {
mp_obj_base_t *fun = fun_in;
if (fun->type->call != NULL) {
return fun->type->call(fun_in, n_args, n_kw, args);
} else {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "'%s' object is not callable", fun->type->name));
}
}
}
// args contains: fun self/NULL arg(0) ... arg(n_args-2) arg(n_args-1) kw_key(0) kw_val(0) ... kw_key(n_kw-1) kw_val(n_kw-1)
// if n_args==0 and n_kw==0 then there are only fun and self/NULL
mp_obj_t rt_call_method_n_kw(uint n_args, uint n_kw, const mp_obj_t *args) {
DEBUG_OP_printf("call method (fun=%p, self=%p, n_args=%u, n_kw=%u, args=%p)\n", args[0], args[1], n_args, n_kw, args);
int adjust = (args[1] == NULL) ? 0 : 1;
return rt_call_function_n_kw(args[0], n_args + adjust, n_kw, args + 2 - adjust);
}
mp_obj_t rt_build_tuple(int n_args, mp_obj_t *items) {
return mp_obj_new_tuple(n_args, items);
}
mp_obj_t rt_build_list(int n_args, mp_obj_t *items) {
return mp_obj_new_list(n_args, items);
}
mp_obj_t rt_build_set(int n_args, mp_obj_t *items) {
return mp_obj_new_set(n_args, items);
}
mp_obj_t rt_store_set(mp_obj_t set, mp_obj_t item) {
mp_obj_set_store(set, item);
return set;
}
// unpacked items are stored in reverse order into the array pointed to by items
void rt_unpack_sequence(mp_obj_t seq_in, uint num, mp_obj_t *items) {
if (MP_OBJ_IS_TYPE(seq_in, &tuple_type) || MP_OBJ_IS_TYPE(seq_in, &list_type)) {
uint seq_len;
mp_obj_t *seq_items;
if (MP_OBJ_IS_TYPE(seq_in, &tuple_type)) {
mp_obj_tuple_get(seq_in, &seq_len, &seq_items);
} else {
mp_obj_list_get(seq_in, &seq_len, &seq_items);
}
if (seq_len < num) {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_ValueError, "need more than %d values to unpack", (void*)(machine_uint_t)seq_len));
} else if (seq_len > num) {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_ValueError, "too many values to unpack (expected %d)", (void*)(machine_uint_t)num));
}
for (uint i = 0; i < num; i++) {
items[i] = seq_items[num - 1 - i];
}
} else {
// TODO call rt_getiter and extract via rt_iternext
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "'%s' object is not iterable", mp_obj_get_type_str(seq_in)));
}
}
mp_obj_t rt_build_map(int n_args) {
return mp_obj_new_dict(n_args);
}
mp_obj_t rt_store_map(mp_obj_t map, mp_obj_t key, mp_obj_t value) {
// map should always be a dict
return mp_obj_dict_store(map, key, value);
}
mp_obj_t rt_load_attr(mp_obj_t base, qstr attr) {
DEBUG_OP_printf("load attr %p.%s\n", base, qstr_str(attr));
// use load_method
mp_obj_t dest[2];
rt_load_method(base, attr, dest);
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]);
}
}
// no attribute found, returns: dest[0] == MP_OBJ_NULL, dest[1] == MP_OBJ_NULL
// normal attribute found, returns: dest[0] == <attribute>, dest[1] == MP_OBJ_NULL
// method attribute found, returns: dest[0] == <method>, dest[1] == <self>
static void rt_load_method_maybe(mp_obj_t base, qstr attr, mp_obj_t *dest) {
// clear output to indicate no attribute/method found yet
dest[0] = MP_OBJ_NULL;
dest[1] = MP_OBJ_NULL;
// get the type
mp_obj_type_t *type = mp_obj_get_type(base);
// if this type can do its own load, then call it
if (type->load_attr != NULL) {
type->load_attr(base, attr, dest);
}
// if nothing found yet, look for built-in and generic names
if (dest[0] == MP_OBJ_NULL) {
if (attr == MP_QSTR___next__ && type->iternext != NULL) {
dest[0] = (mp_obj_t)&mp_builtin_next_obj;
dest[1] = base;
} else if (type->load_attr == NULL) {
// generic method lookup if type didn't provide a specific one
// this is a lookup in the object (ie not class or type)
const mp_method_t *meth = type->methods;
if (meth != NULL) {
for (; meth->name != NULL; meth++) {
if (strcmp(meth->name, qstr_str(attr)) == 0) {
// check if the methods are functions, static or class methods
// see http://docs.python.org/3.3/howto/descriptor.html
if (MP_OBJ_IS_TYPE(meth->fun, &mp_type_staticmethod)) {
// return just the function
dest[0] = ((mp_obj_staticmethod_t*)meth->fun)->fun;
} else if (MP_OBJ_IS_TYPE(meth->fun, &mp_type_classmethod)) {
// return a bound method, with self being the type of this object
dest[0] = ((mp_obj_classmethod_t*)meth->fun)->fun;
dest[1] = mp_obj_get_type(base);
} else {
// return a bound method, with self being this object
dest[0] = (mp_obj_t)meth->fun;
dest[1] = base;
}
break;
}
}
}
}
}
}
void rt_load_method(mp_obj_t base, qstr attr, mp_obj_t *dest) {
DEBUG_OP_printf("load method %p.%s\n", base, qstr_str(attr));
rt_load_method_maybe(base, attr, dest);
if (dest[0] == MP_OBJ_NULL) {
// no attribute/method called attr
// following CPython, we give a more detailed error message for type objects
if (MP_OBJ_IS_TYPE(base, &mp_const_type)) {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_AttributeError, "type object '%s' has no attribute '%s'", ((mp_obj_type_t*)base)->name, qstr_str(attr)));
} else {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_AttributeError, "'%s' object has no attribute '%s'", mp_obj_get_type_str(base), qstr_str(attr)));
}
}
}
void rt_store_attr(mp_obj_t base, qstr attr, mp_obj_t value) {
DEBUG_OP_printf("store attr %p.%s <- %p\n", base, qstr_str(attr), value);
mp_obj_type_t *type = mp_obj_get_type(base);
if (type->store_attr != NULL) {
if (type->store_attr(base, attr, value)) {
return;
}
}
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_AttributeError, "'%s' object has no attribute '%s'", mp_obj_get_type_str(base), qstr_str(attr)));
}
void rt_store_subscr(mp_obj_t base, mp_obj_t index, mp_obj_t value) {
DEBUG_OP_printf("store subscr %p[%p] <- %p\n", base, index, value);
if (MP_OBJ_IS_TYPE(base, &list_type)) {
// list store
mp_obj_list_store(base, index, value);
} else if (MP_OBJ_IS_TYPE(base, &dict_type)) {
// dict store
mp_obj_dict_store(base, index, value);
} else {
mp_obj_type_t *type = mp_obj_get_type(base);
if (type->store_item != NULL) {
bool r = type->store_item(base, index, value);
if (r) {
return;
}
// TODO: call base classes here?
}
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "'%s' object does not support item assignment", mp_obj_get_type_str(base)));
}
}
mp_obj_t rt_getiter(mp_obj_t o_in) {
mp_obj_type_t *type = mp_obj_get_type(o_in);
if (type->getiter != NULL) {
return type->getiter(o_in);
} else {
// check for __getitem__ method
mp_obj_t dest[2];
rt_load_method_maybe(o_in, qstr_from_str("__getitem__"), dest);
if (dest[0] != MP_OBJ_NULL) {
// __getitem__ exists, create an iterator
return mp_obj_new_getitem_iter(dest);
} else {
// object not iterable
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "'%s' object is not iterable", type->name));
}
}
}
mp_obj_t rt_iternext(mp_obj_t o_in) {
mp_obj_type_t *type = mp_obj_get_type(o_in);
if (type->iternext != NULL) {
return type->iternext(o_in);
} else {
nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "'%s' object is not an iterator", type->name));
}
}
mp_obj_t rt_import_name(qstr name, mp_obj_t fromlist, mp_obj_t level) {
// build args array
mp_obj_t args[5];
args[0] = MP_OBJ_NEW_QSTR(name);
args[1] = mp_const_none; // TODO should be globals
args[2] = mp_const_none; // TODO should be locals
args[3] = fromlist;
args[4] = level; // must be 0; we don't yet support other values
// TODO lookup __import__ and call that instead of going straight to builtin implementation
return mp_builtin___import__(5, args);
}
mp_obj_t rt_import_from(mp_obj_t module, qstr name) {
mp_obj_t x = rt_load_attr(module, name);
/* TODO convert AttributeError to ImportError
if (fail) {
(ImportError, "cannot import name %s", qstr_str(name), NULL)
}
*/
return x;
}
mp_map_t *rt_locals_get(void) {
return map_locals;
}
void rt_locals_set(mp_map_t *m) {
DEBUG_OP_printf("rt_locals_set(%p)\n", m);
map_locals = m;
}
mp_map_t *rt_globals_get(void) {
return map_globals;
}
void rt_globals_set(mp_map_t *m) {
DEBUG_OP_printf("rt_globals_set(%p)\n", m);
map_globals = m;
}
mp_map_t *rt_loaded_modules_get(void) {
return &map_loaded_modules;
}
// these must correspond to the respective enum
void *const rt_fun_table[RT_F_NUMBER_OF] = {
rt_load_const_dec,
rt_load_const_str,
rt_load_name,
rt_load_global,
rt_load_build_class,
rt_load_attr,
rt_load_method,
rt_store_name,
rt_store_attr,
rt_store_subscr,
rt_is_true,
rt_unary_op,
rt_build_tuple,
rt_build_list,
rt_list_append,
rt_build_map,
rt_store_map,
rt_build_set,
rt_store_set,
rt_make_function_from_id,
rt_call_function_n_kw,
rt_call_method_n_kw,
rt_binary_op,
rt_getiter,
rt_iternext,
};
/*
void rt_f_vector(rt_fun_kind_t fun_kind) {
(rt_f_table[fun_kind])();
}
*/
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