python代码最后解析成字节码，懒得看这部分源码，这里就把字节码对应的源码列出来，方便之后查看（源码基本在Python/ceval.c）
- STOP_CODE, 0
- POP_TOP, 1
{
v = POP();
Py_DECREF(v);
FAST_DISPATCH();
}
- ROT_TWO, 2
{
v = TOP();
w = SECOND();
SET_TOP(w);
SET_SECOND(v);
FAST_DISPATCH();
}
- ROT_THREE, 3
{
v = TOP();
w = SECOND();
x = THIRD();
SET_TOP(w);
SET_SECOND(x);
SET_THIRD(v);
FAST_DISPATCH();
}
- ROT_FOUR, 5
{
u = TOP();
v = SECOND();
w = THIRD();
x = FOURTH();
SET_TOP(v);
SET_SECOND(w);
SET_THIRD(x);
SET_FOURTH(u);
FAST_DISPATCH();
}
- DUP_TOP, 4
{
v = TOP();
Py_INCREF(v);
PUSH(v);
FAST_DISPATCH();
}
- NOP, 9
{
FAST_DISPATCH();
}
- UNARY_POSITIVE, 10
{
v = TOP();
x = PyNumber_Positive(v);
Py_DECREF(v);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- UNARY_NEGATIVE, 11
{
v = TOP();
x = PyNumber_Negative(v);
Py_DECREF(v);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- UNARY_NOT, 12
{
v = TOP();
err = PyObject_IsTrue(v);
Py_DECREF(v);
if (err == 0) {
Py_INCREF(Py_True);
SET_TOP(Py_True);
DISPATCH();
}
else if (err > 0) {
Py_INCREF(Py_False);
SET_TOP(Py_False);
err = 0;
DISPATCH();
}
STACKADJ(-1);
break;
}
- UNARY_CONVERT, 13
{
v = TOP();
x = PyObject_Repr(v);
Py_DECREF(v);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- UNARY_INVERT, 15
{
v = TOP();
x = PyNumber_Invert(v);
Py_DECREF(v);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- BINARY_POWER, 19
{
w = POP();
v = TOP();
x = PyNumber_Power(v, w, Py_None);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- BINARY_MULTIPLY, 20
{
w = POP();
v = TOP();
x = PyNumber_Multiply(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if(x!=NULL) DISPATCH();
break;
}
- BINARY_DIVIDE, 21
{
if (!_Py_QnewFlag) {
w = POP();
v = TOP();
x = PyNumber_Divide(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
}
- BINARY_MODULO, 22
{
w = POP();
v = TOP();
if (PyString_CheckExact(v)
&& (!PyString_Check(w) || PyString_CheckExact(w))) {
/* fast path; string formatting, but not if the RHS is a str subclass
(see issue28598) */
x = PyString_Format(v, w);
} else {
x = PyNumber_Remainder(v, w);
}
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- BINARY_ADD, 23
{
w = POP();
v = TOP();
if (PyInt_CheckExact(v) && PyInt_CheckExact(w)) {
/* INLINE: int + int */
register long a, b, i;
a = PyInt_AS_LONG(v);
b = PyInt_AS_LONG(w);
/* cast to avoid undefined behaviour
on overflow */
i = (long)((unsigned long)a + b);
if ((i^a) < 0 && (i^b) < 0)
goto slow_add;
x = PyInt_FromLong(i);
}
else if (PyString_CheckExact(v) &&
PyString_CheckExact(w)) {
x = string_concatenate(v, w, f, next_instr);
/* string_concatenate consumed the ref to v */
goto skip_decref_vx;
}
else {
slow_add:
x = PyNumber_Add(v, w);
}
Py_DECREF(v);
skip_decref_vx:
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- BINARY_SUBTRACT, 24
{
w = POP();
v = TOP();
if (PyInt_CheckExact(v) && PyInt_CheckExact(w)) {
/* INLINE: int - int */
register long a, b, i;
a = PyInt_AS_LONG(v);
b = PyInt_AS_LONG(w);
/* cast to avoid undefined behaviour
on overflow */
i = (long)((unsigned long)a - b);
if ((i^a) < 0 && (i^~b) < 0)
goto slow_sub;
x = PyInt_FromLong(i);
}
else {
slow_sub:
x = PyNumber_Subtract(v, w);
}
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- BINARY_SUBSCR, 25
{
w = POP();
v = TOP();
if (PyList_CheckExact(v) && PyInt_CheckExact(w)) {
/* INLINE: list[int] */
Py_ssize_t i = PyInt_AsSsize_t(w);
if (i < 0)
i += PyList_GET_SIZE(v);
if (i >= 0 && i < PyList_GET_SIZE(v)) {
x = PyList_GET_ITEM(v, i);
Py_INCREF(x);
}
else
goto slow_get;
}
else
slow_get:
x = PyObject_GetItem(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- BINARY_FLOOR_DIVIDE, 26
{
w = POP();
v = TOP();
x = PyNumber_FloorDivide(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- BINARY_TRUE_DIVIDE, 27
{
w = POP();
v = TOP();
x = PyNumber_TrueDivide(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- INPLACE_FLOOR_DIVIDE, 28
{
w = POP();
v = TOP();
x = PyNumber_InPlaceFloorDivide(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- INPLACE_TRUE_DIVIDE, 29
{
w = POP();
v = TOP();
x = PyNumber_InPlaceTrueDivide(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- SLICE, 30、SLICE_1, 31、SLICE_2, 32、SLICE_3, 33
{
if ((opcode-SLICE) & 2)
w = POP();
else
w = NULL;
if ((opcode-SLICE) & 1)
v = POP();
else
v = NULL;
u = TOP();
x = apply_slice(u, v, w);
Py_DECREF(u);
Py_XDECREF(v);
Py_XDECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- STORE_SLICE, 40、STORE_SLICE_1, 41、STORE_SLICE_2, 42、STORE_SLICE_3, 43
{
if ((opcode-STORE_SLICE) & 2)
w = POP();
else
w = NULL;
if ((opcode-STORE_SLICE) & 1)
v = POP();
else
v = NULL;
u = POP();
t = POP();
err = assign_slice(u, v, w, t); /* u[v:w] = t */
Py_DECREF(t);
Py_DECREF(u);
Py_XDECREF(v);
Py_XDECREF(w);
if (err == 0) DISPATCH();
break;
}
- DELETE_SLICE, 50、DELETE_SLICE_1, 51、DELETE_SLICE_2, 52、DELETE_SLICE_3, 53
{
if ((opcode-DELETE_SLICE) & 2)
w = POP();
else
w = NULL;
if ((opcode-DELETE_SLICE) & 1)
v = POP();
else
v = NULL;
u = POP();
err = assign_slice(u, v, w, (PyObject *)NULL);
/* del u[v:w] */
Py_DECREF(u);
Py_XDECREF(v);
Py_XDECREF(w);
if (err == 0) DISPATCH();
break;
}
- STORE_MAP, 54
{
w = TOP(); /* key */
u = SECOND(); /* value */
v = THIRD(); /* dict */
STACKADJ(-2);
assert (PyDict_CheckExact(v));
err = PyDict_SetItem(v, w, u); /* v[w] = u */
Py_DECREF(u);
Py_DECREF(w);
if (err == 0) DISPATCH();
break;
}
- INPLACE_ADD, 55
{
w = POP();
v = TOP();
if (PyInt_CheckExact(v) && PyInt_CheckExact(w)) {
/* INLINE: int + int */
register long a, b, i;
a = PyInt_AS_LONG(v);
b = PyInt_AS_LONG(w);
i = a + b;
if ((i^a) < 0 && (i^b) < 0)
goto slow_iadd;
x = PyInt_FromLong(i);
}
else if (PyString_CheckExact(v) &&
PyString_CheckExact(w)) {
x = string_concatenate(v, w, f, next_instr);
/* string_concatenate consumed the ref to v */
goto skip_decref_v;
}
else {
slow_iadd:
x = PyNumber_InPlaceAdd(v, w);
}
Py_DECREF(v);
skip_decref_v:
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- INPLACE_SUBTRACT, 56
{
w = POP();
v = TOP();
if (PyInt_CheckExact(v) && PyInt_CheckExact(w)) {
/* INLINE: int - int */
register long a, b, i;
a = PyInt_AS_LONG(v);
b = PyInt_AS_LONG(w);
i = a - b;
if ((i^a) < 0 && (i^~b) < 0)
goto slow_isub;
x = PyInt_FromLong(i);
}
else {
slow_isub:
x = PyNumber_InPlaceSubtract(v, w);
}
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- INPLACE_MULTIPLY, 57
{
w = POP();
v = TOP();
x = PyNumber_InPlaceMultiply(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- INPLACE_DIVIDE, 58
{
if (!_Py_QnewFlag) {
w = POP();
v = TOP();
x = PyNumber_InPlaceDivide(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
}
- INPLACE_MODULO, 59
{
w = POP();
v = TOP();
x = PyNumber_InPlaceRemainder(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- STORE_SUBSCR, 60
{
w = TOP();
v = SECOND();
u = THIRD();
STACKADJ(-3);
/* v[w] = u */
err = PyObject_SetItem(v, w, u);
Py_DECREF(u);
Py_DECREF(v);
Py_DECREF(w);
if (err == 0) DISPATCH();
break;
}
- DELETE_SUBSCR, 61
{
w = TOP();
v = SECOND();
STACKADJ(-2);
/* del v[w] */
err = PyObject_DelItem(v, w);
Py_DECREF(v);
Py_DECREF(w);
if (err == 0) DISPATCH();
break;
}
- BINARY_LSHIFT, 62
{
w = POP();
v = TOP();
x = PyNumber_Lshift(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- BINARY_RSHIFT, 63
{
w = POP();
v = TOP();
x = PyNumber_Rshift(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- BINARY_AND, 64
{
w = POP();
v = TOP();
x = PyNumber_And(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- BINARY_XOR, 65
{
w = POP();
v = TOP();
x = PyNumber_Xor(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- BINARY_OR, 66
{
w = POP();
v = TOP();
x = PyNumber_Or(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- INPLACE_POWER, 67
{
w = POP();
v = TOP();
x = PyNumber_InPlacePower(v, w, Py_None);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- GET_ITER, 68
{
/* before: [obj]; after [getiter(obj)] */
v = TOP();
x = PyObject_GetIter(v);
Py_DECREF(v);
if (x != NULL) {
SET_TOP(x);
PREDICT(FOR_ITER);
DISPATCH();
}
STACKADJ(-1);
break;
}
- PRINT_EXPR, 70
{
v = POP();
w = PySys_GetObject("displayhook");
if (w == NULL) {
PyErr_SetString(PyExc_RuntimeError,
"lost sys.displayhook");
err = -1;
x = NULL;
}
if (err == 0) {
x = PyTuple_Pack(1, v);
if (x == NULL)
err = -1;
}
if (err == 0) {
w = PyEval_CallObject(w, x);
Py_XDECREF(w);
if (w == NULL)
err = -1;
}
Py_DECREF(v);
Py_XDECREF(x);
break;
}
- PRINT_ITEM, 71
{
printf("print_item");
v = POP();
if (stream == NULL || stream == Py_None) {
w = PySys_GetObject("stdout");
if (w == NULL) {
PyErr_SetString(PyExc_RuntimeError,
"lost sys.stdout");
err = -1;
}
}
/* PyFile_SoftSpace() can exececute arbitrary code
if sys.stdout is an instance with a __getattr__.
If __getattr__ raises an exception, w will
be freed, so we need to prevent that temporarily. */
Py_XINCREF(w);
if (w != NULL && PyFile_SoftSpace(w, 0))
err = PyFile_WriteString(" ", w);
if (err == 0)
err = PyFile_WriteObject(v, w, Py_PRINT_RAW);
if (err == 0) {
/* XXX move into writeobject() ? */
if (PyString_Check(v)) {
char *s = PyString_AS_STRING(v);
Py_ssize_t len = PyString_GET_SIZE(v);
if (len == 0 ||
!isspace(Py_CHARMASK(s[len-1])) ||
s[len-1] == ' ')
PyFile_SoftSpace(w, 1);
}
#ifdef Py_USING_UNICODE
else if (PyUnicode_Check(v)) {
Py_UNICODE *s = PyUnicode_AS_UNICODE(v);
Py_ssize_t len = PyUnicode_GET_SIZE(v);
if (len == 0 ||
!Py_UNICODE_ISSPACE(s[len-1]) ||
s[len-1] == ' ')
PyFile_SoftSpace(w, 1);
}
#endif
else
PyFile_SoftSpace(w, 1);
}
Py_XDECREF(w);
Py_DECREF(v);
Py_XDECREF(stream);
stream = NULL;
if (err == 0) DISPATCH();
break;
}
- PRINT_NEWLINE, 72
{
if (stream == NULL || stream == Py_None)
{
w = PySys_GetObject("stdout");
if (w == NULL) {
PyErr_SetString(PyExc_RuntimeError,
"lost sys.stdout");
why = WHY_EXCEPTION;
}
}
if (w != NULL) {
/* w.write() may replace sys.stdout, so we
* have to keep our reference to it */
Py_INCREF(w);
err = PyFile_WriteString("\n", w);
if (err == 0)
PyFile_SoftSpace(w, 0);
Py_DECREF(w);
}
Py_XDECREF(stream);
stream = NULL;
break;
}
- PRINT_ITEM_TO, 73
{
w = stream = POP();
/* fall through to PRINT_ITEM */
}
- PRINT_NEWLINE_TO, 74
{
w = stream = POP();
/* fall through to PRINT_NEWLINE */
}
- INPLACE_LSHIFT, 75
{
w = POP();
v = TOP();
x = PyNumber_InPlaceLshift(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- INPLACE_RSHIFT, 76
{
w = POP();
v = TOP();
x = PyNumber_InPlaceRshift(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- INPLACE_AND, 77
{
w = POP();
v = TOP();
x = PyNumber_InPlaceAnd(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- INPLACE_XOR, 78
{
w = POP();
v = TOP();
x = PyNumber_InPlaceXor(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- INPLACE_OR, 79
{
w = POP();
v = TOP();
x = PyNumber_InPlaceOr(v, w);
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- BREAK_LOOP, 80
{
why = WHY_BREAK;
goto fast_block_end;
}
- WITH_CLEANUP, 81
{
/* At the top of the stack are 1-3 values indicating
how/why we entered the finally clause:
- TOP = None
- (TOP, SECOND) = (WHY_{RETURN,CONTINUE}), retval
- TOP = WHY_*; no retval below it
- (TOP, SECOND, THIRD) = exc_info()
Below them is EXIT, the context.__exit__ bound method.
In the last case, we must call
EXIT(TOP, SECOND, THIRD)
otherwise we must call
EXIT(None, None, None)
In all cases, we remove EXIT from the stack, leaving
the rest in the same order.
In addition, if the stack represents an exception,
*and* the function call returns a 'true' value, we
"zap" this information, to prevent END_FINALLY from
re-raising the exception. (But non-local gotos
should still be resumed.)
*/
PyObject *exit_func;
u = POP();
if (u == Py_None) {
exit_func = TOP();
SET_TOP(u);
v = w = Py_None;
}
else if (PyInt_Check(u)) {
switch(PyInt_AS_LONG(u)) {
case WHY_RETURN:
case WHY_CONTINUE:
/* Retval in TOP. */
exit_func = SECOND();
SET_SECOND(TOP());
SET_TOP(u);
break;
default:
exit_func = TOP();
SET_TOP(u);
break;
}
u = v = w = Py_None;
}
else {
v = TOP();
w = SECOND();
exit_func = THIRD();
SET_TOP(u);
SET_SECOND(v);
SET_THIRD(w);
}
/* XXX Not the fastest way to call it... */
x = PyObject_CallFunctionObjArgs(exit_func, u, v, w,
NULL);
Py_DECREF(exit_func);
if (x == NULL)
break; /* Go to error exit */
if (u != Py_None)
err = PyObject_IsTrue(x);
else
err = 0;
Py_DECREF(x);
if (err < 0)
break; /* Go to error exit */
else if (err > 0) {
err = 0;
/* There was an exception and a true return */
STACKADJ(-2);
Py_INCREF(Py_None);
SET_TOP(Py_None);
Py_DECREF(u);
Py_DECREF(v);
Py_DECREF(w);
} else {
/* The stack was rearranged to remove EXIT
above. Let END_FINALLY do its thing */
}
PREDICT(END_FINALLY);
break;
}
- LOAD_LOCALS, 82
{
if ((x = f->f_locals) != NULL)
{
Py_INCREF(x);
PUSH(x);
DISPATCH();
}
PyErr_SetString(PyExc_SystemError, "no locals");
break;
}
- RETURN_VALUE, 83
{
printf("return_value");
retval = POP();
why = WHY_RETURN;
goto fast_block_end;
}
- IMPORT_STAR, 84
{
v = POP();
PyFrame_FastToLocals(f);
if ((x = f->f_locals) == NULL) {
PyErr_SetString(PyExc_SystemError,
"no locals found during 'import *'");
Py_DECREF(v);
break;
}
READ_TIMESTAMP(intr0);
err = import_all_from(x, v);
READ_TIMESTAMP(intr1);
PyFrame_LocalsToFast(f, 0);
Py_DECREF(v);
if (err == 0) DISPATCH();
break;
}
- EXEC_STMT, 85
{
w = TOP();
v = SECOND();
u = THIRD();
STACKADJ(-3);
READ_TIMESTAMP(intr0);
err = exec_statement(f, u, v, w);
READ_TIMESTAMP(intr1);
Py_DECREF(u);
Py_DECREF(v);
Py_DECREF(w);
break;
}
- YIELD_VALUE, 86
{
retval = POP();
f->f_stacktop = stack_pointer;
why = WHY_YIELD;
goto fast_yield;
}
- POP_BLOCK, 87
{
{
PyTryBlock *b = PyFrame_BlockPop(f);
while (STACK_LEVEL() > b->b_level) {
v = POP();
Py_DECREF(v);
}
}
DISPATCH();
}
- END_FINALLY, 88
{
v = POP();
if (PyInt_Check(v)) {
why = (enum why_code) PyInt_AS_LONG(v);
assert(why != WHY_YIELD);
if (why == WHY_RETURN ||
why == WHY_CONTINUE)
retval = POP();
}
else if (PyExceptionClass_Check(v) ||
PyString_Check(v)) {
w = POP();
u = POP();
PyErr_Restore(v, w, u);
why = WHY_RERAISE;
break;
}
else if (v != Py_None) {
PyErr_SetString(PyExc_SystemError,
"'finally' pops bad exception");
why = WHY_EXCEPTION;
}
Py_DECREF(v);
break;
}
- BUILD_CLASS, 89
{
u = TOP();
v = SECOND();
w = THIRD();
STACKADJ(-2);
x = build_class(u, v, w);
SET_TOP(x);
Py_DECREF(u);
Py_DECREF(v);
Py_DECREF(w);
break;
}
- STORE_NAME, 90
{
w = GETITEM(names, oparg);
v = POP();
if ((x = f->f_locals) != NULL) {
if (PyDict_CheckExact(x))
err = PyDict_SetItem(x, w, v);
else
err = PyObject_SetItem(x, w, v);
Py_DECREF(v);
if (err == 0) DISPATCH();
break;
}
t = PyObject_Repr(w);
if (t == NULL)
break;
PyErr_Format(PyExc_SystemError,
"no locals found when storing %s",
PyString_AS_STRING(t));
Py_DECREF(t);
break;
}
- DELETE_NAME, 91
{
w = GETITEM(names, oparg);
if ((x = f->f_locals) != NULL) {
if ((err = PyObject_DelItem(x, w)) != 0)
format_exc_check_arg(PyExc_NameError,
NAME_ERROR_MSG,
w);
break;
}
t = PyObject_Repr(w);
if (t == NULL)
break;
PyErr_Format(PyExc_SystemError,
"no locals when deleting %s",
PyString_AS_STRING(w));
Py_DECREF(t);
break;
}
- UNPACK_SEQUENCE, 92
{
v = POP();
if (PyTuple_CheckExact(v) &&
PyTuple_GET_SIZE(v) == oparg) {
PyObject **items = \
((PyTupleObject *)v)->ob_item;
while (oparg--) {
w = items[oparg];
Py_INCREF(w);
PUSH(w);
}
Py_DECREF(v);
DISPATCH();
} else if (PyList_CheckExact(v) &&
PyList_GET_SIZE(v) == oparg) {
PyObject **items = \
((PyListObject *)v)->ob_item;
while (oparg--) {
w = items[oparg];
Py_INCREF(w);
PUSH(w);
}
} else if (unpack_iterable(v, oparg,
stack_pointer + oparg)) {
STACKADJ(oparg);
} else {
/* unpack_iterable() raised an exception */
why = WHY_EXCEPTION;
}
Py_DECREF(v);
break;
}
- FOR_ITER, 93
{
/* before: [iter]; after: [iter, iter()] *or* [] */
v = TOP();
x = (*v->ob_type->tp_iternext)(v);
if (x != NULL) {
PUSH(x);
PREDICT(STORE_FAST);
PREDICT(UNPACK_SEQUENCE);
DISPATCH();
}
if (PyErr_Occurred()) {
if (!PyErr_ExceptionMatches(
PyExc_StopIteration))
break;
PyErr_Clear();
}
/* iterator ended normally */
x = v = POP();
Py_DECREF(v);
JUMPBY(oparg);
DISPATCH();
}
- LIST_APPEND, 94
{
w = POP();
v = PEEK(oparg);
err = PyList_Append(v, w);
Py_DECREF(w);
if (err == 0) {
PREDICT(JUMP_ABSOLUTE);
DISPATCH();
}
break;
}
- STORE_ATTR, 95
{
w = GETITEM(names, oparg);
v = TOP();
u = SECOND();
STACKADJ(-2);
err = PyObject_SetAttr(v, w, u); /* v.w = u */
Py_DECREF(v);
Py_DECREF(u);
if (err == 0) DISPATCH();
break;
}
- DELETE_ATTR, 96
{
w = GETITEM(names, oparg);
v = POP();
err = PyObject_SetAttr(v, w, (PyObject *)NULL);
/* del v.w */
Py_DECREF(v);
break;
}
- STORE_GLOBAL, 97
{
w = GETITEM(names, oparg);
v = POP();
err = PyDict_SetItem(f->f_globals, w, v);
Py_DECREF(v);
if (err == 0) DISPATCH();
break;
}
- DELETE_GLOBAL, 98
{
w = GETITEM(names, oparg);
if ((err = PyDict_DelItem(f->f_globals, w)) != 0)
format_exc_check_arg(
PyExc_NameError, GLOBAL_NAME_ERROR_MSG, w);
break;
}
- DUP_TOPX, 99
{
if (oparg == 2) {
x = TOP();
Py_INCREF(x);
w = SECOND();
Py_INCREF(w);
STACKADJ(2);
SET_TOP(x);
SET_SECOND(w);
FAST_DISPATCH();
} else if (oparg == 3) {
x = TOP();
Py_INCREF(x);
w = SECOND();
Py_INCREF(w);
v = THIRD();
Py_INCREF(v);
STACKADJ(3);
SET_TOP(x);
SET_SECOND(w);
SET_THIRD(v);
FAST_DISPATCH();
}
Py_FatalError("invalid argument to DUP_TOPX"
" (bytecode corruption?)");
/* Never returns, so don't bother to set why. */
break;
}
- LOAD_CONST, 100
{
x = GETITEM(consts, oparg);
Py_INCREF(x);
PUSH(x);
FAST_DISPATCH();
}
- LOAD_NAME, 101
{
w = GETITEM(names, oparg);
if ((v = f->f_locals) == NULL) {
why = WHY_EXCEPTION;
t = PyObject_Repr(w);
if (t == NULL)
break;
PyErr_Format(PyExc_SystemError,
"no locals when loading %s",
PyString_AS_STRING(w));
Py_DECREF(t);
break;
}
if (PyDict_CheckExact(v)) {
x = PyDict_GetItem(v, w);
Py_XINCREF(x);
}
else {
x = PyObject_GetItem(v, w);
if (x == NULL && PyErr_Occurred()) {
if (!PyErr_ExceptionMatches(
PyExc_KeyError))
break;
PyErr_Clear();
}
}
if (x == NULL) {
x = PyDict_GetItem(f->f_globals, w);
if (x == NULL) {
x = PyDict_GetItem(f->f_builtins, w);
if (x == NULL) {
format_exc_check_arg(
PyExc_NameError,
NAME_ERROR_MSG, w);
break;
}
}
Py_INCREF(x);
}
PUSH(x);
DISPATCH();
}
- BUILD_TUPLE, 102
{
x = PyTuple_New(oparg);
if (x != NULL) {
for (; --oparg >= 0;) {
w = POP();
PyTuple_SET_ITEM(x, oparg, w);
}
PUSH(x);
DISPATCH();
}
break;
}
- BUILD_LIST, 103
{
x = PyList_New(oparg);
if (x != NULL) {
for (; --oparg >= 0;) {
w = POP();
PyList_SET_ITEM(x, oparg, w);
}
PUSH(x);
DISPATCH();
}
break;
}
- BUILD_SET, 104
{
int i;
x = PySet_New(NULL);
if (x != NULL) {
for (i = oparg; i > 0; i--) {
w = PEEK(i);
if (err == 0)
err = PySet_Add(x, w);
Py_DECREF(w);
}
STACKADJ(-oparg);
if (err != 0) {
Py_DECREF(x);
break;
}
PUSH(x);
DISPATCH();
}
break;
}
- BUILD_MAP, 105
{
x = _PyDict_NewPresized((Py_ssize_t)oparg);
PUSH(x);
if (x != NULL) DISPATCH();
break;
}
- LOAD_ATTR, 106
{
w = GETITEM(names, oparg);
v = TOP();
x = PyObject_GetAttr(v, w);
Py_DECREF(v);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- COMPARE_OP, 107
{
w = POP();
v = TOP();
if (PyInt_CheckExact(w) && PyInt_CheckExact(v)) {
/* INLINE: cmp(int, int) */
register long a, b;
register int res;
a = PyInt_AS_LONG(v);
b = PyInt_AS_LONG(w);
switch (oparg) {
case PyCmp_LT: res = a < b; break;
case PyCmp_LE: res = a <= b; break;
case PyCmp_EQ: res = a == b; break;
case PyCmp_NE: res = a != b; break;
case PyCmp_GT: res = a > b; break;
case PyCmp_GE: res = a >= b; break;
case PyCmp_IS: res = v == w; break;
case PyCmp_IS_NOT: res = v != w; break;
default: goto slow_compare;
}
x = res ? Py_True : Py_False;
Py_INCREF(x);
}
else {
slow_compare:
x = cmp_outcome(oparg, v, w);
}
Py_DECREF(v);
Py_DECREF(w);
SET_TOP(x);
if (x == NULL) break;
PREDICT(POP_JUMP_IF_FALSE);
PREDICT(POP_JUMP_IF_TRUE);
DISPATCH();
}
- IMPORT_NAME, 108
{
long res;
w = GETITEM(names, oparg);
x = PyDict_GetItemString(f->f_builtins, "__import__");
if (x == NULL) {
PyErr_SetString(PyExc_ImportError,
"__import__ not found");
break;
}
Py_INCREF(x);
v = POP();
u = TOP();
res = PyInt_AsLong(u);
if (res != -1 || PyErr_Occurred()) {
if (res == -1) {
assert(PyErr_Occurred());
PyErr_Clear();
}
w = PyTuple_Pack(5,
w,
f->f_globals,
f->f_locals == NULL ?
Py_None : f->f_locals,
v,
u);
}
else
w = PyTuple_Pack(4,
w,
f->f_globals,
f->f_locals == NULL ?
Py_None : f->f_locals,
v);
Py_DECREF(v);
Py_DECREF(u);
if (w == NULL) {
u = POP();
Py_DECREF(x);
x = NULL;
break;
}
READ_TIMESTAMP(intr0);
v = x;
x = PyEval_CallObject(v, w);
Py_DECREF(v);
READ_TIMESTAMP(intr1);
Py_DECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- IMPORT_FROM, 109
{
w = GETITEM(names, oparg);
v = TOP();
READ_TIMESTAMP(intr0);
x = import_from(v, w);
READ_TIMESTAMP(intr1);
PUSH(x);
if (x != NULL) DISPATCH();
break;
}
- JUMP_FORWARD, 110
{
JUMPBY(oparg);
FAST_DISPATCH();
}
- JUMP_IF_FALSE_OR_POP, 111
{
w = TOP();
if (w == Py_True) {
STACKADJ(-1);
Py_DECREF(w);
FAST_DISPATCH();
}
if (w == Py_False) {
JUMPTO(oparg);
FAST_DISPATCH();
}
err = PyObject_IsTrue(w);
if (err > 0) {
STACKADJ(-1);
Py_DECREF(w);
err = 0;
}
else if (err == 0)
JUMPTO(oparg);
else
break;
DISPATCH();
}
- JUMP_IF_TRUE_OR_POP, 112
{
w = TOP();
if (w == Py_False) {
STACKADJ(-1);
Py_DECREF(w);
FAST_DISPATCH();
}
if (w == Py_True) {
JUMPTO(oparg);
FAST_DISPATCH();
}
err = PyObject_IsTrue(w);
if (err > 0) {
err = 0;
JUMPTO(oparg);
}
else if (err == 0) {
STACKADJ(-1);
Py_DECREF(w);
}
else
break;
DISPATCH();
}
- JUMP_ABSOLUTE, 113
{
JUMPTO(oparg);
#if FAST_LOOPS
/* Enabling this path speeds-up all while and for-loops by bypassing
the per-loop checks for signals. By default, this should be turned-off
because it prevents detection of a control-break in tight loops like
"while 1: pass". Compile with this option turned-on when you need
the speed-up and do not need break checking inside tight loops (ones
that contain only instructions ending with goto fast_next_opcode).
*/
goto fast_next_opcode;
#else
DISPATCH();
#endif
}
- POP_JUMP_IF_FALSE, 114
{
w = POP();
if (w == Py_True) {
Py_DECREF(w);
FAST_DISPATCH();
}
if (w == Py_False) {
Py_DECREF(w);
JUMPTO(oparg);
FAST_DISPATCH();
}
err = PyObject_IsTrue(w);
Py_DECREF(w);
if (err > 0)
err = 0;
else if (err == 0)
JUMPTO(oparg);
else
break;
DISPATCH();
}
- POP_JUMP_IF_TRUE, 115
{
w = POP();
if (w == Py_False) {
Py_DECREF(w);
FAST_DISPATCH();
}
if (w == Py_True) {
Py_DECREF(w);
JUMPTO(oparg);
FAST_DISPATCH();
}
err = PyObject_IsTrue(w);
Py_DECREF(w);
if (err > 0) {
err = 0;
JUMPTO(oparg);
}
else if (err == 0)
;
else
break;
DISPATCH();
}
- LOAD_GLOBAL, 116
{
w = GETITEM(names, oparg);
if (PyString_CheckExact(w)) {
/* Inline the PyDict_GetItem() calls.
WARNING: this is an extreme speed hack.
Do not try this at home. */
long hash = ((PyStringObject *)w)->ob_shash;
if (hash != -1) {
PyDictObject *d;
PyDictEntry *e;
d = (PyDictObject *)(f->f_globals);
e = d->ma_lookup(d, w, hash);
if (e == NULL) {
x = NULL;
break;
}
x = e->me_value;
if (x != NULL) {
Py_INCREF(x);
PUSH(x);
DISPATCH();
}
d = (PyDictObject *)(f->f_builtins);
e = d->ma_lookup(d, w, hash);
if (e == NULL) {
x = NULL;
break;
}
x = e->me_value;
if (x != NULL) {
Py_INCREF(x);
PUSH(x);
DISPATCH();
}
goto load_global_error;
}
}
/* This is the un-inlined version of the code above */
x = PyDict_GetItem(f->f_globals, w);
if (x == NULL) {
x = PyDict_GetItem(f->f_builtins, w);
if (x == NULL) {
load_global_error:
format_exc_check_arg(
PyExc_NameError,
GLOBAL_NAME_ERROR_MSG, w);
break;
}
}
Py_INCREF(x);
PUSH(x);
DISPATCH();
}
- CONTINUE_LOOP, 119
{
retval = PyInt_FromLong(oparg);
if (!retval) {
x = NULL;
break;
}
why = WHY_CONTINUE;
goto fast_block_end;
}
- SETUP_LOOP, 120、SETUP_EXCEPT, 121、SETUP_FINALLY, 122
{
/* NOTE: If you add any new block-setup opcodes that
are not try/except/finally handlers, you may need
to update the PyGen_NeedsFinalizing() function.
*/
PyFrame_BlockSetup(f, opcode, INSTR_OFFSET() + oparg,
STACK_LEVEL());
DISPATCH();
}
- LOAD_FAST, 124
{
x = GETLOCAL(oparg);
if (x != NULL) {
Py_INCREF(x);
PUSH(x);
FAST_DISPATCH();
}
format_exc_check_arg(PyExc_UnboundLocalError,
UNBOUNDLOCAL_ERROR_MSG,
PyTuple_GetItem(co->co_varnames, oparg));
break;
}
- STORE_FAST, 125
{
v = POP();
SETLOCAL(oparg, v);
FAST_DISPATCH();
}
- DELETE_FAST, 126
{
x = GETLOCAL(oparg);
if (x != NULL) {
SETLOCAL(oparg, NULL);
DISPATCH();
}
format_exc_check_arg(
PyExc_UnboundLocalError,
UNBOUNDLOCAL_ERROR_MSG,
PyTuple_GetItem(co->co_varnames, oparg)
);
break;
}
- RAISE_VARARGS, 130
{
u = v = w = NULL;
switch (oparg) {
case 3:
u = POP(); /* traceback */
/* Fallthrough */
case 2:
v = POP(); /* value */
/* Fallthrough */
case 1:
w = POP(); /* exc */
case 0: /* Fallthrough */
why = do_raise(w, v, u);
break;
default:
PyErr_SetString(PyExc_SystemError,
"bad RAISE_VARARGS oparg");
why = WHY_EXCEPTION;
break;
}
break;
}
- CALL_FUNCTION, 131
{
PyObject **sp;
PCALL(PCALL_ALL);
sp = stack_pointer;
#ifdef WITH_TSC
x = call_function(&sp, oparg, &intr0, &intr1);
#else
x = call_function(&sp, oparg);
#endif
stack_pointer = sp;
PUSH(x);
if (x != NULL) DISPATCH();
break;
}
- MAKE_FUNCTION, 132
{
v = POP(); /* code object */
x = PyFunction_New(v, f->f_globals);
Py_DECREF(v);
/* XXX Maybe this should be a separate opcode? */
if (x != NULL && oparg > 0) {
v = PyTuple_New(oparg);
if (v == NULL) {
Py_DECREF(x);
x = NULL;
break;
}
while (--oparg >= 0) {
w = POP();
PyTuple_SET_ITEM(v, oparg, w);
}
err = PyFunction_SetDefaults(x, v);
Py_DECREF(v);
}
PUSH(x);
break;
}
- BUILD_SLICE, 133
{
if (oparg == 3)
w = POP();
else
w = NULL;
v = POP();
u = TOP();
x = PySlice_New(u, v, w);
Py_DECREF(u);
Py_DECREF(v);
Py_XDECREF(w);
SET_TOP(x);
if (x != NULL) DISPATCH();
break;
}
- MAKE_CLOSURE, 134
{
v = POP(); /* code object */
x = PyFunction_New(v, f->f_globals);
Py_DECREF(v);
if (x != NULL) {
v = POP();
if (PyFunction_SetClosure(x, v) != 0) {
/* Can't happen unless bytecode is corrupt. */
why = WHY_EXCEPTION;
}
Py_DECREF(v);
}
if (x != NULL && oparg > 0) {
v = PyTuple_New(oparg);
if (v == NULL) {
Py_DECREF(x);
x = NULL;
break;
}
while (--oparg >= 0) {
w = POP();
PyTuple_SET_ITEM(v, oparg, w);
}
if (PyFunction_SetDefaults(x, v) != 0) {
/* Can't happen unless
PyFunction_SetDefaults changes. */
why = WHY_EXCEPTION;
}
Py_DECREF(v);
}
PUSH(x);
break;
}
- LOAD_CLOSURE, 135
{
x = freevars[oparg];
Py_INCREF(x);
PUSH(x);
if (x != NULL) DISPATCH();
break;
}
- LOAD_DEREF, 136
{
x = freevars[oparg];
w = PyCell_Get(x);
if (w != NULL) {
PUSH(w);
DISPATCH();
}
err = -1;
/* Don't stomp existing exception */
if (PyErr_Occurred())
break;
if (oparg < PyTuple_GET_SIZE(co->co_cellvars)) {
v = PyTuple_GET_ITEM(co->co_cellvars,
oparg);
format_exc_check_arg(
PyExc_UnboundLocalError,
UNBOUNDLOCAL_ERROR_MSG,
v);
} else {
v = PyTuple_GET_ITEM(co->co_freevars, oparg -
PyTuple_GET_SIZE(co->co_cellvars));
format_exc_check_arg(PyExc_NameError,
UNBOUNDFREE_ERROR_MSG, v);
}
break;
}
- STORE_DEREF, 137
{
w = POP();
x = freevars[oparg];
PyCell_Set(x, w);
Py_DECREF(w);
DISPATCH();
}
- CALL_FUNCTION_VAR, 140、CALL_FUNCTION_KW, 141、CALL_FUNCTION_VAR_KW, 142
{
int na = oparg & 0xff;
int nk = (oparg>>8) & 0xff;
int flags = (opcode - CALL_FUNCTION) & 3;
int n = na + 2 * nk;
PyObject **pfunc, *func, **sp;
PCALL(PCALL_ALL);
if (flags & CALL_FLAG_VAR)
n++;
if (flags & CALL_FLAG_KW)
n++;
pfunc = stack_pointer - n - 1;
func = *pfunc;
if (PyMethod_Check(func)
&& PyMethod_GET_SELF(func) != NULL) {
PyObject *self = PyMethod_GET_SELF(func);
Py_INCREF(self);
func = PyMethod_GET_FUNCTION(func);
Py_INCREF(func);
Py_DECREF(*pfunc);
*pfunc = self;
na++;
} else
Py_INCREF(func);
sp = stack_pointer;
READ_TIMESTAMP(intr0);
x = ext_do_call(func, &sp, flags, na, nk);
READ_TIMESTAMP(intr1);
stack_pointer = sp;
Py_DECREF(func);
while (stack_pointer > pfunc) {
w = POP();
Py_DECREF(w);
}
PUSH(x);
if (x != NULL) DISPATCH();
break;
}
- SETUP_WITH, 143
{
static PyObject *exit, *enter;
w = TOP();
x = special_lookup(w, "__exit__", &exit);
if (!x)
break;
SET_TOP(x);
u = special_lookup(w, "__enter__", &enter);
Py_DECREF(w);
if (!u) {
x = NULL;
break;
}
x = PyObject_CallFunctionObjArgs(u, NULL);
Py_DECREF(u);
if (!x)
break;
/* Setup a finally block (SETUP_WITH as a block is
equivalent to SETUP_FINALLY except it normalizes
the exception) before pushing the result of
__enter__ on the stack. */
PyFrame_BlockSetup(f, SETUP_WITH, INSTR_OFFSET() + oparg,
STACK_LEVEL());
PUSH(x);
DISPATCH();
}
}
- EXTENDED_ARG, 145
{
opcode = NEXTOP();
oparg = oparg<<16 | NEXTARG();
goto dispatch_opcode;
}
- SET_ADD, 146
{
w = POP();
v = stack_pointer[-oparg];
err = PySet_Add(v, w);
Py_DECREF(w);
if (err == 0) {
PREDICT(JUMP_ABSOLUTE);
DISPATCH();
}
break;
}
- MAP_ADD, 147
{
w = TOP(); /* key */
u = SECOND(); /* value */
STACKADJ(-2);
v = stack_pointer[-oparg]; /* dict */
assert (PyDict_CheckExact(v));
err = PyDict_SetItem(v, w, u); /* v[w] = u */
Py_DECREF(u);
Py_DECREF(w);
if (err == 0) {
PREDICT(JUMP_ABSOLUTE);
DISPATCH();
}
break;
}
