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e2e3d11e87
circuitpython/py/runtime.c
Damien George e2e3d11e87 py: Fix up number operations and coercion.
2014-01-06 22:13:00 +00:00

949 lines
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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 "mpqstr.h"
#include "obj.h"
#include "runtime0.h"
#include "runtime.h"
#include "map.h"
#include "builtin.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;
typedef enum {
MP_CODE_NONE,
MP_CODE_BYTE,
MP_CODE_NATIVE,
MP_CODE_INLINE_ASM,
} mp_code_kind_t;
typedef struct _mp_code_t {
mp_code_kind_t kind;
int n_args;
int n_locals;
int n_stack;
bool is_generator;
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 int next_unique_code_id;
static mp_code_t *unique_codes;
#ifdef WRITE_CODE
FILE *fp_write_code = NULL;
#endif
void rt_init(void) {
// locals = globals for outer module (see Objects/frameobject.c/PyFrame_New())
map_locals = map_globals = mp_map_new(MP_MAP_QSTR, 1);
mp_qstr_map_lookup(map_globals, MP_QSTR___name__, true)->value = mp_obj_new_str(MP_QSTR___main__);
// init built-in hash table
mp_map_init(&map_builtins, MP_MAP_QSTR, 3);
// built-in exceptions (TODO, make these proper classes)
mp_qstr_map_lookup(&map_builtins, MP_QSTR_AttributeError, true)->value = mp_obj_new_exception(MP_QSTR_AttributeError);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_IndexError, true)->value = mp_obj_new_exception(MP_QSTR_IndexError);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_KeyError, true)->value = mp_obj_new_exception(MP_QSTR_KeyError);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_NameError, true)->value = mp_obj_new_exception(MP_QSTR_NameError);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_TypeError, true)->value = mp_obj_new_exception(MP_QSTR_TypeError);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_SyntaxError, true)->value = mp_obj_new_exception(MP_QSTR_SyntaxError);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_ValueError, true)->value = mp_obj_new_exception(MP_QSTR_ValueError);
// built-in objects
mp_qstr_map_lookup(&map_builtins, MP_QSTR_Ellipsis, true)->value = mp_const_ellipsis;
// built-in core functions
mp_qstr_map_lookup(&map_builtins, MP_QSTR___build_class__, true)->value = rt_make_function_2(mp_builtin___build_class__);
mp_qstr_map_lookup(&map_builtins, MP_QSTR___repl_print__, true)->value = rt_make_function_1(mp_builtin___repl_print__);
// built-in types
mp_qstr_map_lookup(&map_builtins, MP_QSTR_bool, true)->value = (mp_obj_t)&bool_type;
#if MICROPY_ENABLE_FLOAT
mp_qstr_map_lookup(&map_builtins, MP_QSTR_complex, true)->value = (mp_obj_t)&complex_type;
#endif
mp_qstr_map_lookup(&map_builtins, MP_QSTR_dict, true)->value = (mp_obj_t)&dict_type;
#if MICROPY_ENABLE_FLOAT
mp_qstr_map_lookup(&map_builtins, MP_QSTR_float, true)->value = (mp_obj_t)&float_type;
#endif
mp_qstr_map_lookup(&map_builtins, MP_QSTR_int, true)->value = (mp_obj_t)&int_type;
mp_qstr_map_lookup(&map_builtins, MP_QSTR_list, true)->value = (mp_obj_t)&list_type;
mp_qstr_map_lookup(&map_builtins, MP_QSTR_set, true)->value = (mp_obj_t)&set_type;
mp_qstr_map_lookup(&map_builtins, MP_QSTR_tuple, true)->value = (mp_obj_t)&tuple_type;
mp_qstr_map_lookup(&map_builtins, MP_QSTR_type, true)->value = (mp_obj_t)&mp_builtin_type_obj; // TODO
// built-in user functions; TODO covert all to &mp_builtin_xxx's
mp_qstr_map_lookup(&map_builtins, MP_QSTR_abs, true)->value = rt_make_function_1(mp_builtin_abs);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_all, true)->value = rt_make_function_1(mp_builtin_all);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_any, true)->value = rt_make_function_1(mp_builtin_any);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_callable, true)->value = rt_make_function_1(mp_builtin_callable);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_chr, true)->value = rt_make_function_1(mp_builtin_chr);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_divmod, true)->value = rt_make_function_2(mp_builtin_divmod);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_hash, true)->value = (mp_obj_t)&mp_builtin_hash_obj;
mp_qstr_map_lookup(&map_builtins, MP_QSTR_iter, true)->value = (mp_obj_t)&mp_builtin_iter_obj;
mp_qstr_map_lookup(&map_builtins, MP_QSTR_len, true)->value = rt_make_function_1(mp_builtin_len);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_max, true)->value = rt_make_function_var(1, mp_builtin_max);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_min, true)->value = rt_make_function_var(1, mp_builtin_min);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_next, true)->value = (mp_obj_t)&mp_builtin_next_obj;
mp_qstr_map_lookup(&map_builtins, MP_QSTR_ord, true)->value = rt_make_function_1(mp_builtin_ord);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_pow, true)->value = rt_make_function_var(2, mp_builtin_pow);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_print, true)->value = rt_make_function_var(0, mp_builtin_print);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_range, true)->value = rt_make_function_var(1, mp_builtin_range);
mp_qstr_map_lookup(&map_builtins, MP_QSTR_sum, true)->value = rt_make_function_var(1, mp_builtin_sum);
next_unique_code_id = 1; // 0 indicates "no code"
unique_codes = NULL;
#ifdef WRITE_CODE
fp_write_code = fopen("out-code", "wb");
#endif
}
void rt_deinit(void) {
#ifdef WRITE_CODE
if (fp_write_code != NULL) {
fclose(fp_write_code);
}
#endif
}
int rt_get_unique_code_id(void) {
return next_unique_code_id++;
}
static void alloc_unique_codes(void) {
if (unique_codes == NULL) {
unique_codes = m_new(mp_code_t, next_unique_code_id + 10); // XXX hack until we fix the REPL allocation problem
for (int i = 0; i < next_unique_code_id; i++) {
unique_codes[i].kind = MP_CODE_NONE;
}
}
}
void rt_assign_byte_code(int 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_BYTE;
unique_codes[unique_code_id].n_args = n_args;
unique_codes[unique_code_id].n_locals = n_locals;
unique_codes[unique_code_id].n_stack = n_stack;
unique_codes[unique_code_id].is_generator = is_generator;
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", unique_code_id, code, len, n_args);
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");
extern void mp_show_byte_code(const byte *code, int len);
mp_show_byte_code(code, len);
#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(int 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_NATIVE;
unique_codes[unique_code_id].n_args = n_args;
unique_codes[unique_code_id].n_locals = 0;
unique_codes[unique_code_id].n_stack = 0;
unique_codes[unique_code_id].is_generator = false;
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(int 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_INLINE_ASM;
unique_codes[unique_code_id].n_args = n_args;
unique_codes[unique_code_id].n_locals = 0;
unique_codes[unique_code_id].n_stack = 0;
unique_codes[unique_code_id].is_generator = false;
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
}
static bool fit_small_int(mp_small_int_t o) {
return true;
}
int rt_is_true(mp_obj_t arg) {
DEBUG_OP_printf("is true %p\n", arg);
if (MP_OBJ_IS_SMALL_INT(arg)) {
if (MP_OBJ_SMALL_INT_VALUE(arg) == 0) {
return 0;
} else {
return 1;
}
} else if (arg == mp_const_none) {
return 0;
} else if (arg == mp_const_false) {
return 0;
} else if (arg == mp_const_true) {
return 1;
} else {
assert(0);
return 0;
}
}
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_str(qstr);
}
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_qstr_map_lookup(map_locals, qstr, false);
if (elem == NULL) {
elem = mp_qstr_map_lookup(map_globals, qstr, false);
if (elem == NULL) {
elem = mp_qstr_map_lookup(&map_builtins, qstr, false);
if (elem == NULL) {
nlr_jump(mp_obj_new_exception_msg_1_arg(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_qstr_map_lookup(map_globals, qstr, false);
if (elem == NULL) {
elem = mp_qstr_map_lookup(&map_builtins, qstr, false);
if (elem == NULL) {
nlr_jump(mp_obj_new_exception_msg_1_arg(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_qstr_map_lookup(&map_builtins, MP_QSTR___build_class__, false);
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_qstr_map_lookup(map_locals, qstr, true)->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_qstr_map_lookup(map_globals, qstr, true)->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_NOT: if (val != 0) { return mp_const_true;} else { return mp_const_false; }
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 (fit_small_int(val)) {
return MP_OBJ_NEW_SMALL_INT(val);
} else {
// TODO make a bignum
assert(0);
return mp_const_none;
}
} else { // will be an object (small ints are caught in previous if)
mp_obj_base_t *o = arg;
if (o->type->unary_op != NULL) {
mp_obj_t result = o->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_1_arg(MP_QSTR_TypeError, "bad operand type for unary operator: '%s'", o->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 +=
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;
}
default: assert(0);
}
if (fit_small_int(lhs_val)) {
return MP_OBJ_NEW_SMALL_INT(lhs_val);
}
} 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);
}
} else if (MP_OBJ_IS_OBJ(lhs)) {
mp_obj_base_t *o = lhs;
if (o->type->binary_op != NULL) {
mp_obj_t result = o->type->binary_op(op, lhs, rhs);
if (result != NULL) {
return result;
}
}
}
// TODO specify in error message what the operator is
nlr_jump(mp_obj_new_exception_msg_1_arg(MP_QSTR_TypeError, "unsupported operand type for binary operator: '%s'", mp_obj_get_type_str(lhs)));
}
mp_obj_t rt_compare_op(int op, mp_obj_t lhs, mp_obj_t rhs) {
DEBUG_OP_printf("compare %d %p %p\n", op, lhs, rhs);
// deal with == and !=
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
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;
}
}
}
// deal with small ints
if (MP_OBJ_IS_SMALL_INT(lhs) && MP_OBJ_IS_SMALL_INT(rhs)) {
mp_small_int_t lhs_val = MP_OBJ_SMALL_INT_VALUE(lhs);
mp_small_int_t rhs_val = MP_OBJ_SMALL_INT_VALUE(rhs);
int cmp;
switch (op) {
case RT_COMPARE_OP_LESS: cmp = lhs_val < rhs_val; break;
case RT_COMPARE_OP_MORE: cmp = lhs_val > rhs_val; break;
case RT_COMPARE_OP_LESS_EQUAL: cmp = lhs_val <= rhs_val; break;
case RT_COMPARE_OP_MORE_EQUAL: cmp = lhs_val >= rhs_val; break;
default: assert(0); cmp = 0;
}
if (cmp) {
return mp_const_true;
} else {
return mp_const_false;
}
}
#if MICROPY_ENABLE_FLOAT
// deal with floats
if (MP_OBJ_IS_TYPE(lhs, &float_type) || MP_OBJ_IS_TYPE(rhs, &float_type)) {
mp_float_t lhs_val = mp_obj_get_float(lhs);
mp_float_t rhs_val = mp_obj_get_float(rhs);
int cmp;
switch (op) {
case RT_COMPARE_OP_LESS: cmp = lhs_val < rhs_val; break;
case RT_COMPARE_OP_MORE: cmp = lhs_val > rhs_val; break;
case RT_COMPARE_OP_LESS_EQUAL: cmp = lhs_val <= rhs_val; break;
case RT_COMPARE_OP_MORE_EQUAL: cmp = lhs_val >= rhs_val; break;
default: assert(0); cmp = 0;
}
if (cmp) {
return mp_const_true;
} else {
return mp_const_false;
}
}
#endif
// not implemented
assert(0);
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_locals + c->n_stack, c->u_byte.code);
break;
case MP_CODE_NATIVE:
switch (c->n_args) {
case 0: fun = rt_make_function_0(c->u_native.fun); break;
case 1: fun = rt_make_function_1((mp_fun_1_t)c->u_native.fun); break;
case 2: fun = rt_make_function_2((mp_fun_2_t)c->u_native.fun); break;
default: assert(0); fun = mp_const_none;
}
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(c->n_locals, c->n_stack, 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(fun, 0, NULL);
}
mp_obj_t rt_call_function_1(mp_obj_t fun, mp_obj_t arg) {
return rt_call_function_n(fun, 1, &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[1] = arg1;
args[0] = arg2;
return rt_call_function_n(fun, 2, args);
}
// args are in reverse order in the array
mp_obj_t rt_call_function_n(mp_obj_t fun_in, int n_args, 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, args=%p)\n", fun_in, n_args, 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_n != NULL) {
return fun->type->call_n(fun_in, n_args, args);
} else {
nlr_jump(mp_obj_new_exception_msg_1_arg(MP_QSTR_TypeError, "'%s' object is not callable", fun->type->name));
}
}
}
// args are in reverse order in the array; keyword arguments come first, value then key
// eg: (value1, key1, value0, key0, arg1, arg0)
mp_obj_t rt_call_function_n_kw(mp_obj_t fun, uint n_args, uint n_kw, const mp_obj_t *args) {
// TODO
assert(0);
return mp_const_none;
}
// args contains: arg(n_args-1) arg(n_args-2) ... arg(0) self/NULL fun
// if n_args==0 then there are only self/NULL and fun
mp_obj_t rt_call_method_n(uint n_args, const mp_obj_t *args) {
DEBUG_OP_printf("call method %p(self=%p, n_args=%u)\n", args[n_args + 1], args[n_args], n_args);
return rt_call_function_n(args[n_args + 1], n_args + ((args[n_args] == NULL) ? 0 : 1), args);
}
// args contains: kw_val(n_kw-1) kw_key(n_kw-1) ... kw_val(0) kw_key(0) arg(n_args-1) arg(n_args-2) ... arg(0) self/NULL fun
mp_obj_t rt_call_method_n_kw(uint n_args, uint n_kw, const mp_obj_t *args) {
uint n = n_args + 2 * n_kw;
DEBUG_OP_printf("call method %p(self=%p, n_args=%u, n_kw=%u)\n", args[n + 1], args[n], n_args, n_kw);
return rt_call_function_n_kw(args[n + 1], n_args + ((args[n] == NULL) ? 0 : 1), n_kw, args);
}
// items are in reverse order
mp_obj_t rt_build_tuple(int n_args, mp_obj_t *items) {
return mp_obj_new_tuple_reverse(n_args, items);
}
// items are in reverse order
mp_obj_t rt_build_list(int n_args, mp_obj_t *items) {
return mp_obj_new_list_reverse(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 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_1_arg(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_1_arg(MP_QSTR_ValueError, "too many values to unpack (expected %d)", (void*)(machine_uint_t)num));
}
memcpy(items, seq_items, num * sizeof(mp_obj_t));
} else {
// TODO call rt_getiter and extract via rt_iternext
nlr_jump(mp_obj_new_exception_msg_1_arg(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 %s\n", qstr_str(attr));
if (MP_OBJ_IS_TYPE(base, &class_type)) {
mp_map_elem_t *elem = mp_qstr_map_lookup(mp_obj_class_get_locals(base), attr, false);
if (elem == NULL) {
// TODO what about generic method lookup?
goto no_attr;
}
return elem->value;
} else if (MP_OBJ_IS_TYPE(base, &instance_type)) {
return mp_obj_instance_load_attr(base, attr);
} else if (MP_OBJ_IS_TYPE(base, &module_type)) {
DEBUG_OP_printf("lookup module map %p\n", mp_obj_module_get_globals(base));
mp_map_elem_t *elem = mp_qstr_map_lookup(mp_obj_module_get_globals(base), attr, false);
if (elem == NULL) {
// TODO what about generic method lookup?
goto no_attr;
}
return elem->value;
} else if (MP_OBJ_IS_OBJ(base)) {
// generic method lookup
mp_obj_base_t *o = base;
const mp_method_t *meth = &o->type->methods[0];
for (; meth->name != NULL; meth++) {
if (strcmp(meth->name, qstr_str(attr)) == 0) {
return mp_obj_new_bound_meth(base, (mp_obj_t)meth->fun);
}
}
}
no_attr:
nlr_jump(mp_obj_new_exception_msg_2_args(MP_QSTR_AttributeError, "'%s' object has no attribute '%s'", mp_obj_get_type_str(base), qstr_str(attr)));
}
void rt_load_method(mp_obj_t base, qstr attr, mp_obj_t *dest) {
DEBUG_OP_printf("load method %s\n", qstr_str(attr));
if (MP_OBJ_IS_TYPE(base, &gen_instance_type) && attr == MP_QSTR___next__) {
dest[1] = (mp_obj_t)&mp_builtin_next_obj;
dest[0] = base;
return;
} else if (MP_OBJ_IS_TYPE(base, &instance_type)) {
mp_obj_instance_load_method(base, attr, dest);
return;
} else if (MP_OBJ_IS_OBJ(base)) {
// generic method lookup
mp_obj_base_t *o = base;
const mp_method_t *meth = &o->type->methods[0];
for (; meth->name != NULL; meth++) {
if (strcmp(meth->name, qstr_str(attr)) == 0) {
dest[1] = (mp_obj_t)meth->fun;
dest[0] = base;
return;
}
}
}
// no method; fallback to load_attr
dest[1] = rt_load_attr(base, attr);
dest[0] = NULL;
}
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);
if (MP_OBJ_IS_TYPE(base, &class_type)) {
// TODO CPython allows STORE_ATTR to a class, but is this the correct implementation?
mp_map_t *locals = mp_obj_class_get_locals(base);
mp_qstr_map_lookup(locals, attr, true)->value = value;
} else if (MP_OBJ_IS_TYPE(base, &instance_type)) {
mp_obj_instance_store_attr(base, attr, value);
} else if (MP_OBJ_IS_TYPE(base, &module_type)) {
// TODO CPython allows STORE_ATTR to a module, but is this the correct implementation?
mp_map_t *globals = mp_obj_module_get_globals(base);
mp_qstr_map_lookup(globals, attr, true)->value = value;
} else {
nlr_jump(mp_obj_new_exception_msg_2_args(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 {
assert(0);
}
}
mp_obj_t rt_getiter(mp_obj_t o_in) {
if (MP_OBJ_IS_SMALL_INT(o_in)) {
nlr_jump(mp_obj_new_exception_msg(MP_QSTR_TypeError, "'int' object is not iterable"));
} else {
mp_obj_base_t *o = o_in;
if (o->type->getiter != NULL) {
return o->type->getiter(o_in);
} else {
nlr_jump(mp_obj_new_exception_msg_1_arg(MP_QSTR_TypeError, "'%s' object is not iterable", o->type->name));
}
}
}
mp_obj_t rt_iternext(mp_obj_t o_in) {
if (MP_OBJ_IS_SMALL_INT(o_in)) {
nlr_jump(mp_obj_new_exception_msg(MP_QSTR_TypeError, "? 'int' object is not iterable"));
} else {
mp_obj_base_t *o = o_in;
if (o->type->iternext != NULL) {
return o->type->iternext(o_in);
} else {
nlr_jump(mp_obj_new_exception_msg_1_arg(MP_QSTR_TypeError, "? '%s' object is not iterable", o->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_str(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;
}
// 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,
rt_call_method_n,
rt_binary_op,
rt_compare_op,
rt_getiter,
rt_iternext,
};
/*
void rt_f_vector(rt_fun_kind_t fun_kind) {
(rt_f_table[fun_kind])();
}
*/
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