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bytecodes.c
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// This file contains instruction definitions.
// It is read by Tools/cases_generator/generate_cases.py
// to generate Python/generated_cases.c.h.
// Note that there is some dummy C code at the top and bottom of the file
// to fool text editors like VS Code into believing this is valid C code.
// The actual instruction definitions start at // BEGIN BYTECODES //.
// See Tools/cases_generator/README.md for more information.
#include "Python.h"
#include "pycore_abstract.h" // _PyIndex_Check()
#include "pycore_call.h" // _PyObject_FastCallDictTstate()
#include "pycore_ceval.h" // _PyEval_SignalAsyncExc()
#include "pycore_code.h"
#include "pycore_function.h"
#include "pycore_intrinsics.h"
#include "pycore_long.h" // _PyLong_GetZero()
#include "pycore_object.h" // _PyObject_GC_TRACK()
#include "pycore_moduleobject.h" // PyModuleObject
#include "pycore_opcode.h" // EXTRA_CASES
#include "pycore_pyerrors.h" // _PyErr_Fetch()
#include "pycore_pymem.h" // _PyMem_IsPtrFreed()
#include "pycore_pystate.h" // _PyInterpreterState_GET()
#include "pycore_range.h" // _PyRangeIterObject
#include "pycore_sliceobject.h" // _PyBuildSlice_ConsumeRefs
#include "pycore_sysmodule.h" // _PySys_Audit()
#include "pycore_tuple.h" // _PyTuple_ITEMS()
#include "pycore_emscripten_signal.h" // _Py_CHECK_EMSCRIPTEN_SIGNALS
#include "pycore_dict.h"
#include "dictobject.h"
#include "pycore_frame.h"
#include "opcode.h"
#include "pydtrace.h"
#include "setobject.h"
#include "structmember.h" // struct PyMemberDef, T_OFFSET_EX
#define USE_COMPUTED_GOTOS 0
#include "ceval_macros.h"
/* Flow control macros */
#define DEOPT_IF(cond, instname) ((void)0)
#define ERROR_IF(cond, labelname) ((void)0)
#define GO_TO_INSTRUCTION(instname) ((void)0)
#define PREDICT(opname) ((void)0)
#define inst(name, ...) case name:
#define op(name, ...) /* NAME is ignored */
#define macro(name) static int MACRO_##name
#define super(name) static int SUPER_##name
#define family(name, ...) static int family_##name
// Dummy variables for stack effects.
static PyObject *value, *value1, *value2, *left, *right, *res, *sum, *prod, *sub;
static PyObject *container, *start, *stop, *v, *lhs, *rhs;
static PyObject *list, *tuple, *dict, *owner, *set, *str, *tup, *map, *keys;
static PyObject *exit_func, *lasti, *val, *retval, *obj, *iter;
static PyObject *aiter, *awaitable, *iterable, *w, *exc_value, *bc;
static PyObject *orig, *excs, *update, *b, *fromlist, *level, *from;
static PyObject **pieces, **values;
static size_t jump;
// Dummy variables for cache effects
static uint16_t invert, counter, index, hint;
static uint32_t type_version;
static PyObject *
dummy_func(
PyThreadState *tstate,
_PyInterpreterFrame *frame,
unsigned char opcode,
unsigned int oparg,
unsigned int oparg2,
unsigned int oparg3,
_Py_atomic_int * const eval_breaker,
_PyCFrame cframe,
PyObject *names,
PyObject *consts,
_Py_CODEUNIT *next_instr,
PyObject **stack_pointer,
PyObject *kwnames,
int throwflag,
binaryfunc binary_ops[]
)
{
_PyInterpreterFrame entry_frame;
switch (opcode) {
// BEGIN BYTECODES //
inst(NOP, (--)) {
}
inst(RESUME, (--)) {
assert(tstate->cframe == &cframe);
assert(frame == cframe.current_frame);
if (_Py_atomic_load_relaxed_int32(eval_breaker) && oparg < 2) {
goto handle_eval_breaker;
}
}
inst(LOAD_CLOSURE, (-- value)) {
/* We keep LOAD_CLOSURE so that the bytecode stays more readable. */
value = GETLOCAL(oparg);
ERROR_IF(value == NULL, unbound_local_error);
Py_INCREF(value);
}
inst(LOAD_FAST_CHECK, (-- value)) {
value = GETLOCAL(oparg);
ERROR_IF(value == NULL, unbound_local_error);
Py_INCREF(value);
}
inst(LOAD_FAST, (-- value)) {
value = GETLOCAL(oparg);
assert(value != NULL);
Py_INCREF(value);
}
inst(LOAD_CONST, (-- value)) {
value = GETITEM(consts, oparg);
Py_INCREF(value);
}
inst(STORE_FAST, (value --)) {
SETLOCAL(oparg, value);
}
super(LOAD_FAST__LOAD_FAST) = LOAD_FAST + LOAD_FAST;
super(LOAD_FAST__LOAD_CONST) = LOAD_FAST + LOAD_CONST;
super(STORE_FAST__LOAD_FAST) = STORE_FAST + LOAD_FAST;
super(STORE_FAST__STORE_FAST) = STORE_FAST + STORE_FAST;
super(LOAD_CONST__LOAD_FAST) = LOAD_CONST + LOAD_FAST;
inst(POP_TOP, (value --)) {
DECREF_INPUTS();
}
inst(PUSH_NULL, (-- res)) {
res = NULL;
}
macro(END_FOR) = POP_TOP + POP_TOP;
inst(UNARY_NEGATIVE, (value -- res)) {
res = PyNumber_Negative(value);
DECREF_INPUTS();
ERROR_IF(res == NULL, error);
}
inst(UNARY_NOT, (value -- res)) {
int err = PyObject_IsTrue(value);
DECREF_INPUTS();
ERROR_IF(err < 0, error);
if (err == 0) {
res = Py_True;
}
else {
res = Py_False;
}
Py_INCREF(res);
}
inst(UNARY_INVERT, (value -- res)) {
res = PyNumber_Invert(value);
DECREF_INPUTS();
ERROR_IF(res == NULL, error);
}
family(binary_op, INLINE_CACHE_ENTRIES_BINARY_OP) = {
BINARY_OP,
BINARY_OP_ADD_FLOAT,
BINARY_OP_ADD_INT,
BINARY_OP_ADD_UNICODE,
// BINARY_OP_INPLACE_ADD_UNICODE, // This is an odd duck.
BINARY_OP_MULTIPLY_FLOAT,
BINARY_OP_MULTIPLY_INT,
BINARY_OP_SUBTRACT_FLOAT,
BINARY_OP_SUBTRACT_INT,
};
inst(BINARY_OP_MULTIPLY_INT, (unused/1, left, right -- prod)) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
DEOPT_IF(!PyLong_CheckExact(right), BINARY_OP);
STAT_INC(BINARY_OP, hit);
prod = _PyLong_Multiply((PyLongObject *)left, (PyLongObject *)right);
_Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
_Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
ERROR_IF(prod == NULL, error);
}
inst(BINARY_OP_MULTIPLY_FLOAT, (unused/1, left, right -- prod)) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
DEOPT_IF(!PyFloat_CheckExact(right), BINARY_OP);
STAT_INC(BINARY_OP, hit);
double dprod = ((PyFloatObject *)left)->ob_fval *
((PyFloatObject *)right)->ob_fval;
prod = PyFloat_FromDouble(dprod);
_Py_DECREF_SPECIALIZED(right, _PyFloat_ExactDealloc);
_Py_DECREF_SPECIALIZED(left, _PyFloat_ExactDealloc);
ERROR_IF(prod == NULL, error);
}
inst(BINARY_OP_SUBTRACT_INT, (unused/1, left, right -- sub)) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
DEOPT_IF(!PyLong_CheckExact(right), BINARY_OP);
STAT_INC(BINARY_OP, hit);
sub = _PyLong_Subtract((PyLongObject *)left, (PyLongObject *)right);
_Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
_Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
ERROR_IF(sub == NULL, error);
}
inst(BINARY_OP_SUBTRACT_FLOAT, (unused/1, left, right -- sub)) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
DEOPT_IF(!PyFloat_CheckExact(right), BINARY_OP);
STAT_INC(BINARY_OP, hit);
double dsub = ((PyFloatObject *)left)->ob_fval - ((PyFloatObject *)right)->ob_fval;
sub = PyFloat_FromDouble(dsub);
_Py_DECREF_SPECIALIZED(right, _PyFloat_ExactDealloc);
_Py_DECREF_SPECIALIZED(left, _PyFloat_ExactDealloc);
ERROR_IF(sub == NULL, error);
}
inst(BINARY_OP_ADD_UNICODE, (unused/1, left, right -- res)) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyUnicode_CheckExact(left), BINARY_OP);
DEOPT_IF(Py_TYPE(right) != Py_TYPE(left), BINARY_OP);
STAT_INC(BINARY_OP, hit);
res = PyUnicode_Concat(left, right);
_Py_DECREF_SPECIALIZED(left, _PyUnicode_ExactDealloc);
_Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
ERROR_IF(res == NULL, error);
}
// This is a subtle one. It's a super-instruction for
// BINARY_OP_ADD_UNICODE followed by STORE_FAST
// where the store goes into the left argument.
// So the inputs are the same as for all BINARY_OP
// specializations, but there is no output.
// At the end we just skip over the STORE_FAST.
inst(BINARY_OP_INPLACE_ADD_UNICODE, (left, right --)) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyUnicode_CheckExact(left), BINARY_OP);
DEOPT_IF(Py_TYPE(right) != Py_TYPE(left), BINARY_OP);
_Py_CODEUNIT true_next = next_instr[INLINE_CACHE_ENTRIES_BINARY_OP];
assert(_Py_OPCODE(true_next) == STORE_FAST ||
_Py_OPCODE(true_next) == STORE_FAST__LOAD_FAST);
PyObject **target_local = &GETLOCAL(_Py_OPARG(true_next));
DEOPT_IF(*target_local != left, BINARY_OP);
STAT_INC(BINARY_OP, hit);
/* Handle `left = left + right` or `left += right` for str.
*
* When possible, extend `left` in place rather than
* allocating a new PyUnicodeObject. This attempts to avoid
* quadratic behavior when one neglects to use str.join().
*
* If `left` has only two references remaining (one from
* the stack, one in the locals), DECREFing `left` leaves
* only the locals reference, so PyUnicode_Append knows
* that the string is safe to mutate.
*/
assert(Py_REFCNT(left) >= 2);
_Py_DECREF_NO_DEALLOC(left);
PyUnicode_Append(target_local, right);
_Py_DECREF_SPECIALIZED(right, _PyUnicode_ExactDealloc);
ERROR_IF(*target_local == NULL, error);
// The STORE_FAST is already done.
JUMPBY(INLINE_CACHE_ENTRIES_BINARY_OP + 1);
}
inst(BINARY_OP_ADD_FLOAT, (unused/1, left, right -- sum)) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyFloat_CheckExact(left), BINARY_OP);
DEOPT_IF(Py_TYPE(right) != Py_TYPE(left), BINARY_OP);
STAT_INC(BINARY_OP, hit);
double dsum = ((PyFloatObject *)left)->ob_fval +
((PyFloatObject *)right)->ob_fval;
sum = PyFloat_FromDouble(dsum);
_Py_DECREF_SPECIALIZED(right, _PyFloat_ExactDealloc);
_Py_DECREF_SPECIALIZED(left, _PyFloat_ExactDealloc);
ERROR_IF(sum == NULL, error);
}
inst(BINARY_OP_ADD_INT, (unused/1, left, right -- sum)) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyLong_CheckExact(left), BINARY_OP);
DEOPT_IF(Py_TYPE(right) != Py_TYPE(left), BINARY_OP);
STAT_INC(BINARY_OP, hit);
sum = _PyLong_Add((PyLongObject *)left, (PyLongObject *)right);
_Py_DECREF_SPECIALIZED(right, (destructor)PyObject_Free);
_Py_DECREF_SPECIALIZED(left, (destructor)PyObject_Free);
ERROR_IF(sum == NULL, error);
}
family(binary_subscr, INLINE_CACHE_ENTRIES_BINARY_SUBSCR) = {
BINARY_SUBSCR,
BINARY_SUBSCR_DICT,
BINARY_SUBSCR_GETITEM,
BINARY_SUBSCR_LIST_INT,
BINARY_SUBSCR_TUPLE_INT,
};
inst(BINARY_SUBSCR, (unused/4, container, sub -- res)) {
_PyBinarySubscrCache *cache = (_PyBinarySubscrCache *)next_instr;
if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
assert(cframe.use_tracing == 0);
next_instr--;
_Py_Specialize_BinarySubscr(container, sub, next_instr);
DISPATCH_SAME_OPARG();
}
STAT_INC(BINARY_SUBSCR, deferred);
DECREMENT_ADAPTIVE_COUNTER(cache->counter);
res = PyObject_GetItem(container, sub);
DECREF_INPUTS();
ERROR_IF(res == NULL, error);
}
inst(BINARY_SLICE, (container, start, stop -- res)) {
PyObject *slice = _PyBuildSlice_ConsumeRefs(start, stop);
// Can't use ERROR_IF() here, because we haven't
// DECREF'ed container yet, and we still own slice.
if (slice == NULL) {
res = NULL;
}
else {
res = PyObject_GetItem(container, slice);
Py_DECREF(slice);
}
Py_DECREF(container);
ERROR_IF(res == NULL, error);
}
inst(STORE_SLICE, (v, container, start, stop -- )) {
PyObject *slice = _PyBuildSlice_ConsumeRefs(start, stop);
int err;
if (slice == NULL) {
err = 1;
}
else {
err = PyObject_SetItem(container, slice, v);
Py_DECREF(slice);
}
Py_DECREF(v);
Py_DECREF(container);
ERROR_IF(err, error);
}
inst(BINARY_SUBSCR_LIST_INT, (unused/4, list, sub -- res)) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyLong_CheckExact(sub), BINARY_SUBSCR);
DEOPT_IF(!PyList_CheckExact(list), BINARY_SUBSCR);
// Deopt unless 0 <= sub < PyList_Size(list)
DEOPT_IF(!_PyLong_IsPositiveSingleDigit(sub), BINARY_SUBSCR);
assert(((PyLongObject *)_PyLong_GetZero())->ob_digit[0] == 0);
Py_ssize_t index = ((PyLongObject*)sub)->ob_digit[0];
DEOPT_IF(index >= PyList_GET_SIZE(list), BINARY_SUBSCR);
STAT_INC(BINARY_SUBSCR, hit);
res = PyList_GET_ITEM(list, index);
assert(res != NULL);
Py_INCREF(res);
_Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
Py_DECREF(list);
}
inst(BINARY_SUBSCR_TUPLE_INT, (unused/4, tuple, sub -- res)) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyLong_CheckExact(sub), BINARY_SUBSCR);
DEOPT_IF(!PyTuple_CheckExact(tuple), BINARY_SUBSCR);
// Deopt unless 0 <= sub < PyTuple_Size(list)
DEOPT_IF(!_PyLong_IsPositiveSingleDigit(sub), BINARY_SUBSCR);
assert(((PyLongObject *)_PyLong_GetZero())->ob_digit[0] == 0);
Py_ssize_t index = ((PyLongObject*)sub)->ob_digit[0];
DEOPT_IF(index >= PyTuple_GET_SIZE(tuple), BINARY_SUBSCR);
STAT_INC(BINARY_SUBSCR, hit);
res = PyTuple_GET_ITEM(tuple, index);
assert(res != NULL);
Py_INCREF(res);
_Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
Py_DECREF(tuple);
}
inst(BINARY_SUBSCR_DICT, (unused/4, dict, sub -- res)) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyDict_CheckExact(dict), BINARY_SUBSCR);
STAT_INC(BINARY_SUBSCR, hit);
res = PyDict_GetItemWithError(dict, sub);
if (res == NULL) {
if (!_PyErr_Occurred(tstate)) {
_PyErr_SetKeyError(sub);
}
Py_DECREF(dict);
Py_DECREF(sub);
ERROR_IF(true, error);
}
Py_INCREF(res); // Do this before DECREF'ing dict, sub
DECREF_INPUTS();
}
inst(BINARY_SUBSCR_GETITEM, (unused/1, type_version/2, func_version/1, container, sub -- unused)) {
PyTypeObject *tp = Py_TYPE(container);
DEOPT_IF(tp->tp_version_tag != type_version, BINARY_SUBSCR);
assert(tp->tp_flags & Py_TPFLAGS_HEAPTYPE);
PyObject *cached = ((PyHeapTypeObject *)tp)->_spec_cache.getitem;
assert(PyFunction_Check(cached));
PyFunctionObject *getitem = (PyFunctionObject *)cached;
DEOPT_IF(getitem->func_version != func_version, BINARY_SUBSCR);
PyCodeObject *code = (PyCodeObject *)getitem->func_code;
assert(code->co_argcount == 2);
DEOPT_IF(!_PyThreadState_HasStackSpace(tstate, code->co_framesize), BINARY_SUBSCR);
STAT_INC(BINARY_SUBSCR, hit);
Py_INCREF(getitem);
_PyInterpreterFrame *new_frame = _PyFrame_PushUnchecked(tstate, getitem, 2);
STACK_SHRINK(2);
new_frame->localsplus[0] = container;
new_frame->localsplus[1] = sub;
JUMPBY(INLINE_CACHE_ENTRIES_BINARY_SUBSCR);
DISPATCH_INLINED(new_frame);
}
inst(LIST_APPEND, (list, unused[oparg-1], v -- list, unused[oparg-1])) {
ERROR_IF(_PyList_AppendTakeRef((PyListObject *)list, v) < 0, error);
PREDICT(JUMP_BACKWARD);
}
inst(SET_ADD, (set, unused[oparg-1], v -- set, unused[oparg-1])) {
int err = PySet_Add(set, v);
Py_DECREF(v);
ERROR_IF(err, error);
PREDICT(JUMP_BACKWARD);
}
family(store_subscr) = {
STORE_SUBSCR,
STORE_SUBSCR_DICT,
STORE_SUBSCR_LIST_INT,
};
inst(STORE_SUBSCR, (counter/1, v, container, sub -- )) {
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
assert(cframe.use_tracing == 0);
next_instr--;
_Py_Specialize_StoreSubscr(container, sub, next_instr);
DISPATCH_SAME_OPARG();
}
STAT_INC(STORE_SUBSCR, deferred);
_PyStoreSubscrCache *cache = (_PyStoreSubscrCache *)next_instr;
DECREMENT_ADAPTIVE_COUNTER(cache->counter);
/* container[sub] = v */
int err = PyObject_SetItem(container, sub, v);
DECREF_INPUTS();
ERROR_IF(err, error);
}
inst(STORE_SUBSCR_LIST_INT, (unused/1, value, list, sub -- )) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyLong_CheckExact(sub), STORE_SUBSCR);
DEOPT_IF(!PyList_CheckExact(list), STORE_SUBSCR);
// Ensure nonnegative, zero-or-one-digit ints.
DEOPT_IF(!_PyLong_IsPositiveSingleDigit(sub), STORE_SUBSCR);
Py_ssize_t index = ((PyLongObject*)sub)->ob_digit[0];
// Ensure index < len(list)
DEOPT_IF(index >= PyList_GET_SIZE(list), STORE_SUBSCR);
STAT_INC(STORE_SUBSCR, hit);
PyObject *old_value = PyList_GET_ITEM(list, index);
PyList_SET_ITEM(list, index, value);
assert(old_value != NULL);
Py_DECREF(old_value);
_Py_DECREF_SPECIALIZED(sub, (destructor)PyObject_Free);
Py_DECREF(list);
}
inst(STORE_SUBSCR_DICT, (unused/1, value, dict, sub -- )) {
assert(cframe.use_tracing == 0);
DEOPT_IF(!PyDict_CheckExact(dict), STORE_SUBSCR);
STAT_INC(STORE_SUBSCR, hit);
int err = _PyDict_SetItem_Take2((PyDictObject *)dict, sub, value);
Py_DECREF(dict);
ERROR_IF(err, error);
}
inst(DELETE_SUBSCR, (container, sub --)) {
/* del container[sub] */
int err = PyObject_DelItem(container, sub);
DECREF_INPUTS();
ERROR_IF(err, error);
}
inst(CALL_INTRINSIC_1, (value -- res)) {
assert(oparg <= MAX_INTRINSIC_1);
res = _PyIntrinsics_UnaryFunctions[oparg](tstate, value);
Py_DECREF(value);
ERROR_IF(res == NULL, error);
}
// This should remain a legacy instruction.
inst(RAISE_VARARGS) {
PyObject *cause = NULL, *exc = NULL;
switch (oparg) {
case 2:
cause = POP(); /* cause */
/* fall through */
case 1:
exc = POP(); /* exc */
/* fall through */
case 0:
if (do_raise(tstate, exc, cause)) {
goto exception_unwind;
}
break;
default:
_PyErr_SetString(tstate, PyExc_SystemError,
"bad RAISE_VARARGS oparg");
break;
}
goto error;
}
inst(INTERPRETER_EXIT, (retval --)) {
assert(frame == &entry_frame);
assert(_PyFrame_IsIncomplete(frame));
STACK_SHRINK(1); // Since we're not going to DISPATCH()
assert(EMPTY());
/* Restore previous cframe and return. */
tstate->cframe = cframe.previous;
tstate->cframe->use_tracing = cframe.use_tracing;
assert(tstate->cframe->current_frame == frame->previous);
assert(!_PyErr_Occurred(tstate));
_Py_LeaveRecursiveCallTstate(tstate);
return retval;
}
inst(RETURN_VALUE, (retval --)) {
STACK_SHRINK(1);
assert(EMPTY());
_PyFrame_SetStackPointer(frame, stack_pointer);
TRACE_FUNCTION_EXIT();
DTRACE_FUNCTION_EXIT();
_Py_LeaveRecursiveCallPy(tstate);
assert(frame != &entry_frame);
// GH-99729: We need to unlink the frame *before* clearing it:
_PyInterpreterFrame *dying = frame;
frame = cframe.current_frame = dying->previous;
_PyEvalFrameClearAndPop(tstate, dying);
_PyFrame_StackPush(frame, retval);
goto resume_frame;
}
inst(GET_AITER, (obj -- iter)) {
unaryfunc getter = NULL;
PyTypeObject *type = Py_TYPE(obj);
if (type->tp_as_async != NULL) {
getter = type->tp_as_async->am_aiter;
}
if (getter == NULL) {
_PyErr_Format(tstate, PyExc_TypeError,
"'async for' requires an object with "
"__aiter__ method, got %.100s",
type->tp_name);
DECREF_INPUTS();
ERROR_IF(true, error);
}
iter = (*getter)(obj);
DECREF_INPUTS();
ERROR_IF(iter == NULL, error);
if (Py_TYPE(iter)->tp_as_async == NULL ||
Py_TYPE(iter)->tp_as_async->am_anext == NULL) {
_PyErr_Format(tstate, PyExc_TypeError,
"'async for' received an object from __aiter__ "
"that does not implement __anext__: %.100s",
Py_TYPE(iter)->tp_name);
Py_DECREF(iter);
ERROR_IF(true, error);
}
}
inst(GET_ANEXT, (aiter -- aiter, awaitable)) {
unaryfunc getter = NULL;
PyObject *next_iter = NULL;
PyTypeObject *type = Py_TYPE(aiter);
if (PyAsyncGen_CheckExact(aiter)) {
awaitable = type->tp_as_async->am_anext(aiter);
if (awaitable == NULL) {
goto error;
}
} else {
if (type->tp_as_async != NULL){
getter = type->tp_as_async->am_anext;
}
if (getter != NULL) {
next_iter = (*getter)(aiter);
if (next_iter == NULL) {
goto error;
}
}
else {
_PyErr_Format(tstate, PyExc_TypeError,
"'async for' requires an iterator with "
"__anext__ method, got %.100s",
type->tp_name);
goto error;
}
awaitable = _PyCoro_GetAwaitableIter(next_iter);
if (awaitable == NULL) {
_PyErr_FormatFromCause(
PyExc_TypeError,
"'async for' received an invalid object "
"from __anext__: %.100s",
Py_TYPE(next_iter)->tp_name);
Py_DECREF(next_iter);
goto error;
} else {
Py_DECREF(next_iter);
}
}
PREDICT(LOAD_CONST);
}
inst(GET_AWAITABLE, (iterable -- iter)) {
iter = _PyCoro_GetAwaitableIter(iterable);
if (iter == NULL) {
format_awaitable_error(tstate, Py_TYPE(iterable), oparg);
}
DECREF_INPUTS();
if (iter != NULL && PyCoro_CheckExact(iter)) {
PyObject *yf = _PyGen_yf((PyGenObject*)iter);
if (yf != NULL) {
/* `iter` is a coroutine object that is being
awaited, `yf` is a pointer to the current awaitable
being awaited on. */
Py_DECREF(yf);
Py_CLEAR(iter);
_PyErr_SetString(tstate, PyExc_RuntimeError,
"coroutine is being awaited already");
/* The code below jumps to `error` if `iter` is NULL. */
}
}
ERROR_IF(iter == NULL, error);
PREDICT(LOAD_CONST);
}
// error: SEND stack effect depends on jump flag
inst(SEND) {
assert(frame != &entry_frame);
assert(STACK_LEVEL() >= 2);
PyObject *v = POP();
PyObject *receiver = TOP();
PySendResult gen_status;
PyObject *retval;
if (tstate->c_tracefunc == NULL) {
gen_status = PyIter_Send(receiver, v, &retval);
} else {
if (Py_IsNone(v) && PyIter_Check(receiver)) {
retval = Py_TYPE(receiver)->tp_iternext(receiver);
}
else {
retval = PyObject_CallMethodOneArg(receiver, &_Py_ID(send), v);
}
if (retval == NULL) {
if (tstate->c_tracefunc != NULL
&& _PyErr_ExceptionMatches(tstate, PyExc_StopIteration))
call_exc_trace(tstate->c_tracefunc, tstate->c_traceobj, tstate, frame);
if (_PyGen_FetchStopIterationValue(&retval) == 0) {
gen_status = PYGEN_RETURN;
}
else {
gen_status = PYGEN_ERROR;
}
}
else {
gen_status = PYGEN_NEXT;
}
}
Py_DECREF(v);
if (gen_status == PYGEN_ERROR) {
assert(retval == NULL);
goto error;
}
if (gen_status == PYGEN_RETURN) {
assert(retval != NULL);
Py_DECREF(receiver);
SET_TOP(retval);
JUMPBY(oparg);
}
else {
assert(gen_status == PYGEN_NEXT);
assert(retval != NULL);
PUSH(retval);
}
}
inst(YIELD_VALUE, (retval -- unused)) {
// NOTE: It's important that YIELD_VALUE never raises an exception!
// The compiler treats any exception raised here as a failed close()
// or throw() call.
assert(oparg == STACK_LEVEL());
assert(frame != &entry_frame);
PyGenObject *gen = _PyFrame_GetGenerator(frame);
gen->gi_frame_state = FRAME_SUSPENDED;
_PyFrame_SetStackPointer(frame, stack_pointer - 1);
TRACE_FUNCTION_EXIT();
DTRACE_FUNCTION_EXIT();
tstate->exc_info = gen->gi_exc_state.previous_item;
gen->gi_exc_state.previous_item = NULL;
_Py_LeaveRecursiveCallPy(tstate);
_PyInterpreterFrame *gen_frame = frame;
frame = cframe.current_frame = frame->previous;
gen_frame->previous = NULL;
frame->prev_instr -= frame->yield_offset;
_PyFrame_StackPush(frame, retval);
goto resume_frame;
}
inst(POP_EXCEPT, (exc_value -- )) {
_PyErr_StackItem *exc_info = tstate->exc_info;
Py_XSETREF(exc_info->exc_value, exc_value);
}
// stack effect: (__0 -- )
inst(RERAISE) {
if (oparg) {
PyObject *lasti = PEEK(oparg + 1);
if (PyLong_Check(lasti)) {
frame->prev_instr = _PyCode_CODE(frame->f_code) + PyLong_AsLong(lasti);
assert(!_PyErr_Occurred(tstate));
}
else {
assert(PyLong_Check(lasti));
_PyErr_SetString(tstate, PyExc_SystemError, "lasti is not an int");
goto error;
}
}
PyObject *val = POP();
assert(val && PyExceptionInstance_Check(val));
PyObject *exc = Py_NewRef(PyExceptionInstance_Class(val));
PyObject *tb = PyException_GetTraceback(val);
_PyErr_Restore(tstate, exc, val, tb);
goto exception_unwind;
}
inst(PREP_RERAISE_STAR, (orig, excs -- val)) {
assert(PyList_Check(excs));
val = _PyExc_PrepReraiseStar(orig, excs);
DECREF_INPUTS();
ERROR_IF(val == NULL, error);
}
// stack effect: (__0, __1 -- )
inst(END_ASYNC_FOR) {
PyObject *val = POP();
assert(val && PyExceptionInstance_Check(val));
if (PyErr_GivenExceptionMatches(val, PyExc_StopAsyncIteration)) {
Py_DECREF(val);
Py_DECREF(POP());
}
else {
PyObject *exc = Py_NewRef(PyExceptionInstance_Class(val));
PyObject *tb = PyException_GetTraceback(val);
_PyErr_Restore(tstate, exc, val, tb);
goto exception_unwind;
}
}
// stack effect: (__0, __1 -- )
inst(CLEANUP_THROW) {
assert(throwflag);
PyObject *exc_value = TOP();
assert(exc_value && PyExceptionInstance_Check(exc_value));
if (PyErr_GivenExceptionMatches(exc_value, PyExc_StopIteration)) {
PyObject *value = ((PyStopIterationObject *)exc_value)->value;
Py_INCREF(value);
Py_DECREF(POP()); // The StopIteration.
Py_DECREF(POP()); // The last sent value.
Py_DECREF(POP()); // The delegated sub-iterator.
PUSH(value);
}
else {
PyObject *exc_type = Py_NewRef(Py_TYPE(exc_value));
PyObject *exc_traceback = PyException_GetTraceback(exc_value);
_PyErr_Restore(tstate, exc_type, Py_NewRef(exc_value), exc_traceback);
goto exception_unwind;
}
}
inst(LOAD_ASSERTION_ERROR, ( -- value)) {
value = Py_NewRef(PyExc_AssertionError);
}
inst(LOAD_BUILD_CLASS, ( -- bc)) {
if (PyDict_CheckExact(BUILTINS())) {
bc = _PyDict_GetItemWithError(BUILTINS(),
&_Py_ID(__build_class__));
if (bc == NULL) {
if (!_PyErr_Occurred(tstate)) {
_PyErr_SetString(tstate, PyExc_NameError,
"__build_class__ not found");
}
ERROR_IF(true, error);
}
Py_INCREF(bc);
}
else {
bc = PyObject_GetItem(BUILTINS(), &_Py_ID(__build_class__));
if (bc == NULL) {
if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError))
_PyErr_SetString(tstate, PyExc_NameError,
"__build_class__ not found");
ERROR_IF(true, error);
}
}
}
inst(STORE_NAME, (v -- )) {
PyObject *name = GETITEM(names, oparg);
PyObject *ns = LOCALS();
int err;
if (ns == NULL) {
_PyErr_Format(tstate, PyExc_SystemError,
"no locals found when storing %R", name);
DECREF_INPUTS();
ERROR_IF(true, error);
}
if (PyDict_CheckExact(ns))
err = PyDict_SetItem(ns, name, v);
else
err = PyObject_SetItem(ns, name, v);
DECREF_INPUTS();
ERROR_IF(err, error);
}
inst(DELETE_NAME, (--)) {
PyObject *name = GETITEM(names, oparg);
PyObject *ns = LOCALS();
int err;
if (ns == NULL) {
_PyErr_Format(tstate, PyExc_SystemError,
"no locals when deleting %R", name);
goto error;
}
err = PyObject_DelItem(ns, name);
// Can't use ERROR_IF here.
if (err != 0) {
format_exc_check_arg(tstate, PyExc_NameError,
NAME_ERROR_MSG,
name);
goto error;
}
}
// stack effect: (__0 -- __array[oparg])
inst(UNPACK_SEQUENCE) {
_PyUnpackSequenceCache *cache = (_PyUnpackSequenceCache *)next_instr;
if (ADAPTIVE_COUNTER_IS_ZERO(cache->counter)) {
assert(cframe.use_tracing == 0);
PyObject *seq = TOP();
next_instr--;
_Py_Specialize_UnpackSequence(seq, next_instr, oparg);
DISPATCH_SAME_OPARG();
}
STAT_INC(UNPACK_SEQUENCE, deferred);
DECREMENT_ADAPTIVE_COUNTER(cache->counter);
PyObject *seq = POP();
PyObject **top = stack_pointer + oparg;
if (!unpack_iterable(tstate, seq, oparg, -1, top)) {
Py_DECREF(seq);
goto error;
}
STACK_GROW(oparg);
Py_DECREF(seq);
JUMPBY(INLINE_CACHE_ENTRIES_UNPACK_SEQUENCE);
}
// stack effect: (__0 -- __array[oparg])
inst(UNPACK_SEQUENCE_TWO_TUPLE) {
PyObject *seq = TOP();
DEOPT_IF(!PyTuple_CheckExact(seq), UNPACK_SEQUENCE);
DEOPT_IF(PyTuple_GET_SIZE(seq) != 2, UNPACK_SEQUENCE);
STAT_INC(UNPACK_SEQUENCE, hit);
SET_TOP(Py_NewRef(PyTuple_GET_ITEM(seq, 1)));
PUSH(Py_NewRef(PyTuple_GET_ITEM(seq, 0)));
Py_DECREF(seq);
JUMPBY(INLINE_CACHE_ENTRIES_UNPACK_SEQUENCE);
}
// stack effect: (__0 -- __array[oparg])
inst(UNPACK_SEQUENCE_TUPLE) {
PyObject *seq = TOP();
DEOPT_IF(!PyTuple_CheckExact(seq), UNPACK_SEQUENCE);
DEOPT_IF(PyTuple_GET_SIZE(seq) != oparg, UNPACK_SEQUENCE);
STAT_INC(UNPACK_SEQUENCE, hit);
STACK_SHRINK(1);
PyObject **items = _PyTuple_ITEMS(seq);
while (oparg--) {
PUSH(Py_NewRef(items[oparg]));
}
Py_DECREF(seq);
JUMPBY(INLINE_CACHE_ENTRIES_UNPACK_SEQUENCE);
}
// stack effect: (__0 -- __array[oparg])
inst(UNPACK_SEQUENCE_LIST) {
PyObject *seq = TOP();
DEOPT_IF(!PyList_CheckExact(seq), UNPACK_SEQUENCE);
DEOPT_IF(PyList_GET_SIZE(seq) != oparg, UNPACK_SEQUENCE);
STAT_INC(UNPACK_SEQUENCE, hit);
STACK_SHRINK(1);
PyObject **items = _PyList_ITEMS(seq);
while (oparg--) {
PUSH(Py_NewRef(items[oparg]));
}
Py_DECREF(seq);
JUMPBY(INLINE_CACHE_ENTRIES_UNPACK_SEQUENCE);
}
// error: UNPACK_EX has irregular stack effect
inst(UNPACK_EX) {
int totalargs = 1 + (oparg & 0xFF) + (oparg >> 8);
PyObject *seq = POP();
PyObject **top = stack_pointer + totalargs;
if (!unpack_iterable(tstate, seq, oparg & 0xFF, oparg >> 8, top)) {
Py_DECREF(seq);
goto error;
}
STACK_GROW(totalargs);
Py_DECREF(seq);
}
family(store_attr) = {
STORE_ATTR,
STORE_ATTR_INSTANCE_VALUE,
STORE_ATTR_SLOT,
STORE_ATTR_WITH_HINT,
};
inst(STORE_ATTR, (counter/1, unused/3, v, owner --)) {
if (ADAPTIVE_COUNTER_IS_ZERO(counter)) {
assert(cframe.use_tracing == 0);
PyObject *name = GETITEM(names, oparg);
next_instr--;
_Py_Specialize_StoreAttr(owner, next_instr, name);
DISPATCH_SAME_OPARG();
}
STAT_INC(STORE_ATTR, deferred);
_PyAttrCache *cache = (_PyAttrCache *)next_instr;
DECREMENT_ADAPTIVE_COUNTER(cache->counter);
PyObject *name = GETITEM(names, oparg);
int err = PyObject_SetAttr(owner, name, v);
Py_DECREF(v);
Py_DECREF(owner);
ERROR_IF(err, error);
}
inst(DELETE_ATTR, (owner --)) {
PyObject *name = GETITEM(names, oparg);
int err = PyObject_SetAttr(owner, name, (PyObject *)NULL);
Py_DECREF(owner);
ERROR_IF(err, error);
}
inst(STORE_GLOBAL, (v --)) {
PyObject *name = GETITEM(names, oparg);
int err = PyDict_SetItem(GLOBALS(), name, v);
Py_DECREF(v);
ERROR_IF(err, error);
}
inst(DELETE_GLOBAL, (--)) {
PyObject *name = GETITEM(names, oparg);
int err;
err = PyDict_DelItem(GLOBALS(), name);
// Can't use ERROR_IF here.
if (err != 0) {
if (_PyErr_ExceptionMatches(tstate, PyExc_KeyError)) {
format_exc_check_arg(tstate, PyExc_NameError,
NAME_ERROR_MSG, name);