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Implement basic class/object functionality in runtime.

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This commit is contained in:
Damien
2013-10-09 23:10:10 +01:00
parent 91d387de7d
commit a397776d6b
9 changed files with 273 additions and 100 deletions
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26
py/vm.c
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@@ -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)
} else if ((unum & 0xff) == 1) {
obj2 = *sp++; // the first argument
obj1 = *sp++; // the self object (or NULL)
*sp = rt_call_function_2(*sp, obj1, obj2);
*sp = rt_call_method_2(*sp, obj1, obj2);
} else {
assert(0);
unum = unum & 0xff;
obj1 = rt_call_method_n(unum, sp);
sp += unum + 1;
*sp = obj1;
}
break;