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Commit a397776d authored by Damien's avatar Damien
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Implement basic class/object functionality in runtime.

parent 91d387de
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Inline Side-by-side
py/emit.h
View file @ a397776d
......@@ -57,8 +57,8 @@ typedef struct _emit_method_table_t {
void (*store_global)(emit_t *emit, qstr qstr);
void (*store_deref)(emit_t *emit, qstr qstr);
void (*store_attr)(emit_t *emit, qstr qstr);
void (*store_locals)(emit_t *emit);
void (*store_subscr)(emit_t *emit);
void (*store_locals)(emit_t *emit);
void (*delete_fast)(emit_t *emit, qstr qstr, int local_num);
void (*delete_name)(emit_t *emit, qstr qstr);
void (*delete_global)(emit_t *emit, qstr qstr);
......
py/emitbc.c
View file @ a397776d
......@@ -348,16 +348,16 @@ static void emit_bc_store_attr(emit_t *emit, qstr qstr) {
emit_write_byte_1_qstr(emit, PYBC_STORE_ATTR, qstr);
}
static void emit_bc_store_locals(emit_t *emit) {
emit_pre(emit, -1);
emit_write_byte_1(emit, PYBC_STORE_LOCALS);
}
static void emit_bc_store_subscr(emit_t *emit) {
emit_pre(emit, -3);
emit_write_byte_1(emit, PYBC_STORE_SUBSCR);
}
static void emit_bc_store_locals(emit_t *emit) {
// not needed for byte code
emit_pre(emit, -1);
}
static void emit_bc_delete_fast(emit_t *emit, qstr qstr, int local_num) {
assert(local_num >= 0);
emit_pre(emit, 0);
......@@ -718,8 +718,8 @@ const emit_method_table_t emit_bc_method_table = {
emit_bc_store_global,
emit_bc_store_deref,
emit_bc_store_attr,
emit_bc_store_locals,
emit_bc_store_subscr,
emit_bc_store_locals,
emit_bc_delete_fast,
emit_bc_delete_name,
emit_bc_delete_global,
......
py/emitcpy.c
View file @ a397776d
......@@ -352,17 +352,17 @@ static void emit_cpy_store_attr(emit_t *emit, qstr qstr) {
}
}
static void emit_cpy_store_locals(emit_t *emit) {
emit_pre(emit, -1, 1);
static void emit_cpy_store_subscr(emit_t *emit) {
emit_pre(emit, -3, 1);
if (emit->pass == PASS_3) {
printf("STORE_LOCALS\n");
printf("STORE_SUBSCR\n");
}
}
static void emit_cpy_store_subscr(emit_t *emit) {
emit_pre(emit, -3, 1);
static void emit_cpy_store_locals(emit_t *emit) {
emit_pre(emit, -1, 1);
if (emit->pass == PASS_3) {
printf("STORE_SUBSCR\n");
printf("STORE_LOCALS\n");
}
}
......@@ -870,8 +870,8 @@ const emit_method_table_t emit_cpython_method_table = {
emit_cpy_store_global,
emit_cpy_store_deref,
emit_cpy_store_attr,
emit_cpy_store_locals,
emit_cpy_store_subscr,
emit_cpy_store_locals,
emit_cpy_delete_fast,
emit_cpy_delete_name,
emit_cpy_delete_global,
......
py/emitnative.c
View file @ a397776d
......@@ -731,11 +731,6 @@ static void emit_native_store_attr(emit_t *emit, qstr qstr) {
assert(0);
}
static void emit_native_store_locals(emit_t *emit) {
// not supported
assert(0);
}
static void emit_native_store_subscr(emit_t *emit) {
// depends on type of subject:
// - integer, function, pointer to structure: error
......@@ -749,6 +744,13 @@ static void emit_native_store_subscr(emit_t *emit) {
emit_call(emit, RT_F_STORE_SUBSCR, rt_store_subscr);
}
static void emit_native_store_locals(emit_t *emit) {
// not needed
vtype_kind_t vtype;
emit_pre_pop_reg(emit, &vtype, REG_TEMP0);
emit_post(emit);
}
static void emit_native_delete_fast(emit_t *emit, qstr qstr, int local_num) {
// not implemented
// could support for Python types, just set to None (so GC can reclaim it)
......@@ -1146,8 +1148,8 @@ const emit_method_table_t EXPORT_FUN(method_table) = {
emit_native_store_global,
emit_native_store_deref,
emit_native_store_attr,
emit_native_store_locals,
emit_native_store_subscr,
emit_native_store_locals,
emit_native_delete_fast,
emit_native_delete_name,
emit_native_delete_global,
......
py/main.c
View file @ a397776d
......@@ -33,7 +33,7 @@ int main(int argc, char **argv) {
py_parse_node_t pn = py_parse(lex, 0);
if (pn != PY_PARSE_NODE_NULL) {
//printf("----------------\n");
parse_node_show(pn, 0);
//parse_node_show(pn, 0);
//printf("----------------\n");
py_compile(pn);
//printf("----------------\n");
......
py/runtime.c
View file @ a397776d
......@@ -9,8 +9,8 @@
#include "runtime.h"
#include "vm.h"
//#define DEBUG_printf(args...) (void)0
#define DEBUG_printf(args...) printf(args)
#define DEBUG_printf(args...) (void)0
//#define DEBUG_printf(args...) printf(args)
#define DEBUG_OP_printf(args...) (void)0
//#define DEBUG_OP_printf(args...) printf(args)
......@@ -46,6 +46,7 @@ typedef enum {
O_SET,
O_MAP,
O_CLASS,
O_OBJ,
} py_obj_kind_t;
typedef enum {
......@@ -59,13 +60,15 @@ typedef struct _py_map_elem_t {
} py_map_elem_t;
typedef struct _py_map_t {
py_map_kind_t kind;
py_map_kind_t kind; // TODO merge this 1-bit field into alloc or used
machine_uint_t alloc;
machine_uint_t used;
py_map_elem_t *table;
} py_map_t;
typedef struct _py_obj_base_t {
typedef struct _py_obj_base_t py_obj_base_t;
struct _py_obj_base_t {
py_obj_kind_t kind;
union {
const char *id;
......@@ -101,24 +104,22 @@ typedef struct _py_obj_base_t {
py_obj_t *table;
} u_set;
py_map_t u_map; // for O_MAP
/*
struct { // for O_MAP
int alloc;
int used;
py_map_elem_t *table;
} u_map;
*/
struct { // for O_CLASS
py_map_t *map;
py_map_t *locals;
} u_class;
struct { // for O_OBJ
py_obj_base_t *class; // points to a O_CLASS object
py_map_t *members;
} u_obj;
};
} py_obj_base_t;
};
py_obj_t py_const_none;
py_obj_t py_const_false;
py_obj_t py_const_true;
py_map_t map_name;
py_map_t map_locals;
py_map_t map_globals;
py_map_t map_builtins;
// approximatelly doubling primes; made with Mathematica command: Table[Prime[Floor[(1.7)^n]], {n, 3, 24}]
......@@ -334,10 +335,22 @@ py_obj_t py_builtin_len(py_obj_t o_in) {
return TO_SMALL_INT(len);
}
py_obj_t py_builtin___build_class__(py_obj_t o1, py_obj_t o2) {
py_obj_t py_builtin___build_class__(py_obj_t o_class_fun, py_obj_t o_class_name) {
// we differ from CPython: we set the new __locals__ object here
py_map_t old_locals = map_locals;
py_map_t *class_locals = py_map_new(MAP_QSTR, 0);
map_locals = *class_locals;
// call the class code
rt_call_function_1(o_class_fun, (py_obj_t)0xdeadbeef);
// restore old __locals__ object
map_locals = old_locals;
// create and return the new class
py_obj_base_t *o = m_new(py_obj_base_t, 1);
o->kind = O_CLASS;
o->u_class.map = py_map_new(MAP_QSTR, 0);
o->u_class.locals = class_locals;
return o;
}
......@@ -353,7 +366,10 @@ void rt_init() {
py_const_false = py_obj_new_const("False");
py_const_true = py_obj_new_const("True");
py_map_init(&map_name, MAP_QSTR, 0);
py_map_init(&map_locals, MAP_QSTR, 0);
py_map_init(&map_globals, MAP_QSTR, 1);
py_qstr_map_lookup(&map_globals, qstr_from_str_static("__name__"), true)->value = py_obj_new_str(qstr_from_str_static("__main__"));
py_map_init(&map_builtins, MAP_QSTR, 3);
py_qstr_map_lookup(&map_builtins, q_print, true)->value = rt_make_function_1(py_builtin_print);
......@@ -446,6 +462,25 @@ void rt_assign_inline_asm_code(int unique_code_id, py_fun_t fun, uint len, int n
}
}
bool py_obj_is_callable(py_obj_t o_in) {
if (IS_SMALL_INT(o_in)) {
return false;
} else {
py_obj_base_t *o = o_in;
switch (o->kind) {
case O_FUN_0:
case O_FUN_1:
case O_FUN_2:
case O_FUN_N:
case O_FUN_BC:
case O_FUN_ASM:
return true;
default:
return false;
}
}
}
const char *py_obj_get_type_str(py_obj_t o_in) {
if (IS_SMALL_INT(o_in)) {
return "int";
......@@ -476,6 +511,13 @@ const char *py_obj_get_type_str(py_obj_t o_in) {
return "set";
case O_MAP:
return "dict";
case O_OBJ:
{
py_map_elem_t *qn = py_qstr_map_lookup(o->u_obj.class->u_class.locals, qstr_from_str_static("__qualname__"), false);
assert(qn != NULL);
assert(IS_O(qn->value, O_STR));
return qstr_str(((py_obj_base_t*)qn->value)->u_str);
}
default:
assert(0);
return "UnknownType";
......@@ -546,6 +588,7 @@ void py_obj_print(py_obj_t o_in) {
break;
}
default:
printf("<? %d>", o->kind);
assert(0);
}
}
......@@ -587,20 +630,33 @@ py_obj_t rt_load_const_str(qstr qstr) {
py_obj_t rt_load_name(qstr qstr) {
// logic: search locals, globals, builtins
DEBUG_OP_printf("load %s\n", qstr_str(qstr));
py_map_elem_t *elem = py_qstr_map_lookup(&map_name, qstr, false);
DEBUG_OP_printf("load name %s\n", qstr_str(qstr));
py_map_elem_t *elem = py_qstr_map_lookup(&map_locals, qstr, false);
if (elem == NULL) {
elem = py_qstr_map_lookup(&map_builtins, qstr, false);
elem = py_qstr_map_lookup(&map_globals, qstr, false);
if (elem == NULL) {
printf("name doesn't exist: %s\n", qstr_str(qstr));
assert(0);
elem = py_qstr_map_lookup(&map_builtins, qstr, false);
if (elem == NULL) {
printf("name doesn't exist: %s\n", qstr_str(qstr));
assert(0);
}
}
}
return elem->value;
}
py_obj_t rt_load_global(qstr qstr) {
return rt_load_name(qstr); // TODO
// logic: search globals, builtins
DEBUG_OP_printf("load global %s\n", qstr_str(qstr));
py_map_elem_t *elem = py_qstr_map_lookup(&map_globals, qstr, false);
if (elem == NULL) {
elem = py_qstr_map_lookup(&map_builtins, qstr, false);
if (elem == NULL) {
printf("name doesn't exist: %s\n", qstr_str(qstr));
assert(0);
}
}
return elem->value;
}
py_obj_t rt_load_build_class() {
......@@ -614,8 +670,13 @@ py_obj_t rt_load_build_class() {
}
void rt_store_name(qstr qstr, py_obj_t obj) {
DEBUG_OP_printf("store %s <- %p\n", qstr_str(qstr), obj);
py_qstr_map_lookup(&map_name, qstr, true)->value = obj;
DEBUG_OP_printf("store name %s <- %p\n", qstr_str(qstr), obj);
py_qstr_map_lookup(&map_locals, qstr, true)->value = obj;
}
void rt_store_global(qstr qstr, py_obj_t obj) {
DEBUG_OP_printf("store global %s <- %p\n", qstr_str(qstr), obj);
py_qstr_map_lookup(&map_globals, qstr, true)->value = obj;
}
py_obj_t rt_unary_op(int op, py_obj_t arg) {
......@@ -803,6 +864,18 @@ py_obj_t rt_call_function_0(py_obj_t fun) {
assert(o->u_fun_asm.n_args == 0);
DEBUG_OP_printf("calling inline asm %p with no args\n", o->u_fun_asm.fun);
return rt_convert_val_from_inline_asm(((inline_asm_fun_0_t)o->u_fun_asm.fun)());
} else if (IS_O(fun, O_BOUND_METH)) {
py_obj_base_t *o = fun;
DEBUG_OP_printf("calling bound method %p with self and no args\n", o->u_bound_meth.meth);
return rt_call_function_1(o->u_bound_meth.meth, o->u_bound_meth.self);
} else if (IS_O(fun, O_CLASS)) {
// instantiate an instance of a class
DEBUG_OP_printf("instantiate object of class %p with no args\n", fun);
py_obj_base_t *o = m_new(py_obj_base_t, 1);
o->kind = O_OBJ;
o->u_obj.class = fun;
o->u_obj.members = py_map_new(MAP_QSTR, 0);
return o;
} else {
printf("fun0:%p\n", fun);
assert(0);
......@@ -817,7 +890,10 @@ py_obj_t rt_call_function_1(py_obj_t fun, py_obj_t arg) {
return ((py_fun_1_t)o->u_fun.fun)(arg);
} else if (IS_O(fun, O_FUN_BC)) {
py_obj_base_t *o = fun;
assert(o->u_fun_bc.n_args == 1);
if (o->u_fun_bc.n_args != 1) {
printf("rt_call_function_1: trying to pass 1 argument to a function that takes %d arguments\n", o->u_fun_bc.n_args);
assert(0);
}
DEBUG_OP_printf("calling byte code %p with 1 arg\n", o->u_fun_bc.code);
return py_execute_byte_code(o->u_fun_bc.code, o->u_fun_bc.len, &arg, 1);
} else if (IS_O(fun, O_FUN_ASM)) {
......@@ -845,8 +921,8 @@ py_obj_t rt_call_function_2(py_obj_t fun, py_obj_t arg1, py_obj_t arg2) {
assert(o->u_fun_bc.n_args == 2);
DEBUG_OP_printf("calling byte code %p with 2 args\n", o->u_fun_bc.code);
py_obj_t args[2];
args[0] = arg1;
args[1] = arg2;
args[1] = arg1;
args[0] = arg2;
return py_execute_byte_code(o->u_fun_bc.code, o->u_fun_bc.len, &args[0], 2);
} else if (IS_O(fun, O_FUN_ASM)) {
py_obj_base_t *o = fun;
......@@ -859,6 +935,19 @@ py_obj_t rt_call_function_2(py_obj_t fun, py_obj_t arg1, py_obj_t arg2) {
}
}
// args are in reverse order in the array
py_obj_t rt_call_function_n(py_obj_t fun, int n_args, const py_obj_t *args) {
if (IS_O(fun, O_FUN_BC)) {
py_obj_base_t *o = fun;
assert(o->u_fun_bc.n_args == n_args);
DEBUG_OP_printf("calling byte code %p with %d args\n", o->u_fun_bc.code, n_args);
return py_execute_byte_code(o->u_fun_bc.code, o->u_fun_bc.len, args, n_args);
} else {
assert(0);
return py_const_none;
}
}
py_obj_t rt_call_method_1(py_obj_t fun, py_obj_t self) {
DEBUG_OP_printf("call method %p %p\n", fun, self);
if (self == NULL) {
......@@ -877,6 +966,13 @@ py_obj_t rt_call_method_2(py_obj_t fun, py_obj_t self, py_obj_t arg) {
}
}
// 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
py_obj_t rt_call_method_n(int n_args, const py_obj_t *args) {
DEBUG_OP_printf("call method %p %p %d args\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);
}
// items are in reverse order
py_obj_t rt_build_list(int n_args, py_obj_t *items) {
py_obj_base_t *o = m_new(py_obj_base_t, 1);
......@@ -964,27 +1060,6 @@ py_obj_t rt_store_map(py_obj_t map, py_obj_t key, py_obj_t value) {
return map;
}
void rt_store_subscr(py_obj_t base, py_obj_t index, py_obj_t value) {
if (IS_O(base, O_LIST) && IS_SMALL_INT(index)) {
// list store
py_obj_base_t *o = base;
int idx = FROM_SMALL_INT(index);
if (idx < 0) {
idx += o->u_list.len;
}
if (0 <= idx && idx < o->u_list.len) {
o->u_list.items[idx] = value;
} else {
assert(0);
}
} else if (IS_O(base, O_MAP)) {
// map store
py_map_lookup(base, index, true)->value = value;
} else {
assert(0);
}
}
py_obj_t build_bound_method(py_obj_t self, py_obj_t meth) {
py_obj_base_t *o = m_new(py_obj_base_t, 1);
o->kind = O_BOUND_METH;
......@@ -994,22 +1069,41 @@ py_obj_t build_bound_method(py_obj_t self, py_obj_t meth) {
}
py_obj_t rt_load_attr(py_obj_t base, qstr attr) {
DEBUG_OP_printf("load %s\n", qstr_str(attr));
DEBUG_OP_printf("load attr %s\n", qstr_str(attr));
if (IS_O(base, O_LIST) && attr == q_append) {
return build_bound_method(base, fun_list_append);
} else if (IS_O(base, O_CLASS)) {
py_obj_base_t *o = base;
py_map_elem_t *elem = py_qstr_map_lookup(o->u_class.map, attr, false);
py_map_elem_t *elem = py_qstr_map_lookup(o->u_class.locals, attr, false);
if (elem == NULL) {
printf("Nope! %s\n", qstr_str(attr));
assert(0);
goto no_attr;
}
return elem->value;
} else {
printf("AttributeError: '%s' object has no attribute '%s'\n", py_obj_get_type_str(base), qstr_str(attr));
assert(0);
return py_const_none;
} else if (IS_O(base, O_OBJ)) {
// logic: look in obj members then class locals (TODO check this against CPython)
py_obj_base_t *o = base;
py_map_elem_t *elem = py_qstr_map_lookup(o->u_obj.members, attr, false);
if (elem != NULL) {
// object member, always treated as a value
return elem->value;
}
elem = py_qstr_map_lookup(o->u_obj.class->u_class.locals, attr, false);
if (elem != NULL) {
if (py_obj_is_callable(elem->value)) {
// class member is callable so build a bound method
return build_bound_method(base, elem->value);
} else {
// class member is a value, so just return that value
return elem->value;
}
}
goto no_attr;
}
no_attr:
printf("AttributeError: '%s' object has no attribute '%s'\n", py_obj_get_type_str(base), qstr_str(attr));
assert(0);
return py_const_none;
}
void rt_load_method(py_obj_t base, qstr attr, py_obj_t *dest) {
......@@ -1017,9 +1111,74 @@ void rt_load_method(py_obj_t base, qstr attr, py_obj_t *dest) {
if (IS_O(base, O_LIST) && attr == q_append) {
dest[1] = fun_list_append;
dest[0] = base;
return;
} else if (IS_O(base, O_OBJ)) {
// logic: look in obj members then class locals (TODO check this against CPython)
py_obj_base_t *o = base;
py_map_elem_t *elem = py_qstr_map_lookup(o->u_obj.members, attr, false);
if (elem != NULL) {
// object member, always treated as a value
dest[1] = elem->value;
dest[0] = NULL;
return;
}
elem = py_qstr_map_lookup(o->u_obj.class->u_class.locals, attr, false);
if (elem != NULL) {
if (py_obj_is_callable(elem->value)) {
// class member is callable so build a bound method
dest[1] = elem->value;
dest[0] = base;
return;
} else {
// class member is a value, so just return that value
dest[1] = elem->value;
dest[0] = NULL;
return;
}
}
goto no_attr;
}
no_attr:
dest[1] = rt_load_attr(base, attr);
dest[0] = NULL;
}
void rt_store_attr(py_obj_t base, qstr attr, py_obj_t val) {
DEBUG_OP_printf("store attr %p.%s <- %p\n", base, qstr_str(attr), val);
if (IS_O(base, O_OBJ)) {
// logic: look in class locals (no add) then obj members (add) (TODO check this against CPython)
py_obj_base_t *o = base;
py_map_elem_t *elem = py_qstr_map_lookup(o->u_obj.class->u_class.locals, attr, false);
if (elem != NULL) {
elem->value = val;
} else {
elem = py_qstr_map_lookup(o->u_obj.class->u_class.locals, attr, true)->value = val;
}
} else {
printf("?AttributeError: '%s' object has no attribute '%s'\n", py_obj_get_type_str(base), qstr_str(attr));
assert(0);
}
}
void rt_store_subscr(py_obj_t base, py_obj_t index, py_obj_t value) {
if (IS_O(base, O_LIST) && IS_SMALL_INT(index)) {
// list store
py_obj_base_t *o = base;
int idx = FROM_SMALL_INT(index);
if (idx < 0) {
idx += o->u_list.len;
}
if (0 <= idx && idx < o->u_list.len) {
o->u_list.items[idx] = value;
} else {
assert(0);
}
} else if (IS_O(base, O_MAP)) {
// map store
py_map_lookup(base, index, true)->value = value;
} else {
dest[1] = rt_load_attr(base, attr);
dest[0] = NULL;
assert(0);
}
}
......
py/runtime.h
View file @ a397776d
......@@ -100,6 +100,7 @@ py_obj_t rt_load_name(qstr qstr);
py_obj_t rt_load_global(qstr qstr);
py_obj_t rt_load_build_class();
void rt_store_name(qstr qstr, py_obj_t obj);
void rt_store_global(qstr qstr, py_obj_t obj);
py_obj_t rt_unary_op(int op, py_obj_t arg);
py_obj_t rt_binary_op(int op, py_obj_t lhs, py_obj_t rhs);
py_obj_t rt_compare_op(int op, py_obj_t lhs, py_obj_t rhs);
......@@ -113,10 +114,12 @@ py_obj_t rt_call_function_1(py_obj_t fun, py_obj_t arg);
py_obj_t rt_call_function_2(py_obj_t fun, py_obj_t arg1, py_obj_t arg2);
py_obj_t rt_call_method_1(py_obj_t fun, py_obj_t self);
py_obj_t rt_call_method_2(py_obj_t fun, py_obj_t self, py_obj_t arg);
py_obj_t rt_call_method_n(int n_args, const py_obj_t *args);
py_obj_t rt_build_list(int n_args, py_obj_t *items);
py_obj_t rt_build_map(int n_args);
py_obj_t rt_store_map(py_obj_t map, py_obj_t key, py_obj_t value);
py_obj_t rt_build_set(int n_args, py_obj_t *items);
void rt_store_subscr(py_obj_t base, py_obj_t index, py_obj_t val);
py_obj_t rt_load_attr(py_obj_t base, qstr attr);
void rt_load_method(py_obj_t base, qstr attr, py_obj_t *dest);
void rt_store_attr(py_obj_t base, qstr attr, py_obj_t val);
void rt_store_subscr(py_obj_t base, py_obj_t index, py_obj_t val);
py/vm.c
View file @ a397776d
......@@ -14,8 +14,9 @@
#define PUSH(val) *--sp = (val)
#define POP() (*sp++)
py_obj_t py_execute_byte_code(byte *code, uint len, py_obj_t *args, uint n_args) {
byte *ip = code;
// args are in reverse order in array
py_obj_t py_execute_byte_code(const byte *code, uint len, const py_obj_t *args, uint n_args) {
const byte *ip = code;
py_obj_t stack[10];
py_obj_t *sp = &stack[10]; // stack grows down, sp points to top of stack
machine_uint_t unum;
......@@ -27,14 +28,14 @@ py_obj_t py_execute_byte_code(byte *code, uint len, py_obj_t *args, uint n_args)
// init args
for (int i = 0; i < n_args; i++) {
if (i == 0) {
fast0 = args[0];
fast0 = args[n_args - 1];
} else if (i == 1) {
fast1 = args[1];
fast1 = args[n_args - 2];
} else if (i == 2) {
fast2 = args[2];
fast2 = args[n_args - 3];
} else {
assert(i - 3 < 4);
fastn[i - 3] = args[i];
fastn[i - 3] = args[n_args - 1 - i];
}
}
......@@ -137,6 +138,12 @@ py_obj_t py_execute_byte_code(byte *code, uint len, py_obj_t *args, uint n_args)
rt_store_name(qstr, POP());
break;
case PYBC_STORE_ATTR:
DECODE_QSTR;
rt_store_attr(sp[0], qstr, sp[1]);
sp += 2;
break;
case PYBC_STORE_SUBSCR:
rt_store_subscr(sp[1], sp[0], sp[2]);
sp += 3;
......@@ -254,9 +261,12 @@ py_obj_t py_execute_byte_code(byte *code, uint len, py_obj_t *args, uint n_args)