mirror of
https://github.com/python/cpython.git
synced 2024-12-14 04:17:19 +08:00
1948 lines
60 KiB
C
1948 lines
60 KiB
C
#include <stdbool.h>
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#include "Python.h"
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#include "code.h"
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#include "opcode.h"
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#include "structmember.h" // PyMemberDef
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#include "pycore_code.h" // _PyCodeConstructor
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#include "pycore_interp.h" // PyInterpreterState.co_extra_freefuncs
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#include "pycore_pystate.h" // _PyInterpreterState_GET()
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#include "pycore_tuple.h" // _PyTuple_ITEMS()
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#include "clinic/codeobject.c.h"
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/******************
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* generic helpers
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******************/
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/* all_name_chars(s): true iff s matches [a-zA-Z0-9_]* */
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static int
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all_name_chars(PyObject *o)
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{
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const unsigned char *s, *e;
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if (!PyUnicode_IS_ASCII(o))
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return 0;
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s = PyUnicode_1BYTE_DATA(o);
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e = s + PyUnicode_GET_LENGTH(o);
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for (; s != e; s++) {
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if (!Py_ISALNUM(*s) && *s != '_')
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return 0;
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}
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return 1;
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}
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static int
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intern_strings(PyObject *tuple)
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{
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Py_ssize_t i;
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for (i = PyTuple_GET_SIZE(tuple); --i >= 0; ) {
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PyObject *v = PyTuple_GET_ITEM(tuple, i);
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if (v == NULL || !PyUnicode_CheckExact(v)) {
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PyErr_SetString(PyExc_SystemError,
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"non-string found in code slot");
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return -1;
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}
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PyUnicode_InternInPlace(&_PyTuple_ITEMS(tuple)[i]);
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}
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return 0;
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}
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/* Intern selected string constants */
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static int
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intern_string_constants(PyObject *tuple, int *modified)
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{
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for (Py_ssize_t i = PyTuple_GET_SIZE(tuple); --i >= 0; ) {
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PyObject *v = PyTuple_GET_ITEM(tuple, i);
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if (PyUnicode_CheckExact(v)) {
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if (PyUnicode_READY(v) == -1) {
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return -1;
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}
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if (all_name_chars(v)) {
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PyObject *w = v;
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PyUnicode_InternInPlace(&v);
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if (w != v) {
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PyTuple_SET_ITEM(tuple, i, v);
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if (modified) {
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*modified = 1;
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}
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}
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}
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}
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else if (PyTuple_CheckExact(v)) {
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if (intern_string_constants(v, NULL) < 0) {
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return -1;
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}
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}
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else if (PyFrozenSet_CheckExact(v)) {
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PyObject *w = v;
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PyObject *tmp = PySequence_Tuple(v);
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if (tmp == NULL) {
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return -1;
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}
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int tmp_modified = 0;
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if (intern_string_constants(tmp, &tmp_modified) < 0) {
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Py_DECREF(tmp);
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return -1;
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}
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if (tmp_modified) {
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v = PyFrozenSet_New(tmp);
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if (v == NULL) {
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Py_DECREF(tmp);
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return -1;
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}
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PyTuple_SET_ITEM(tuple, i, v);
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Py_DECREF(w);
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if (modified) {
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*modified = 1;
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}
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}
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Py_DECREF(tmp);
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}
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}
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return 0;
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}
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/* Return a shallow copy of a tuple that is
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guaranteed to contain exact strings, by converting string subclasses
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to exact strings and complaining if a non-string is found. */
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static PyObject*
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validate_and_copy_tuple(PyObject *tup)
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{
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PyObject *newtuple;
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PyObject *item;
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Py_ssize_t i, len;
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len = PyTuple_GET_SIZE(tup);
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newtuple = PyTuple_New(len);
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if (newtuple == NULL)
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return NULL;
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for (i = 0; i < len; i++) {
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item = PyTuple_GET_ITEM(tup, i);
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if (PyUnicode_CheckExact(item)) {
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Py_INCREF(item);
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}
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else if (!PyUnicode_Check(item)) {
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PyErr_Format(
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PyExc_TypeError,
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"name tuples must contain only "
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"strings, not '%.500s'",
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Py_TYPE(item)->tp_name);
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Py_DECREF(newtuple);
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return NULL;
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}
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else {
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item = _PyUnicode_Copy(item);
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if (item == NULL) {
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Py_DECREF(newtuple);
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return NULL;
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}
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}
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PyTuple_SET_ITEM(newtuple, i, item);
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}
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return newtuple;
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}
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/******************
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* _PyCode_New()
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******************/
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// This is also used in compile.c.
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void
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_Py_set_localsplus_info(int offset, PyObject *name, _PyLocals_Kind kind,
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PyObject *names, PyObject *kinds)
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{
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Py_INCREF(name);
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PyTuple_SET_ITEM(names, offset, name);
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_PyLocals_SetKind(kinds, offset, kind);
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}
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static void
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get_localsplus_counts(PyObject *names, PyObject *kinds,
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int *pnlocals, int *pnplaincellvars, int *pncellvars,
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int *pnfreevars)
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{
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int nlocals = 0;
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int nplaincellvars = 0;
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int ncellvars = 0;
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int nfreevars = 0;
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Py_ssize_t nlocalsplus = PyTuple_GET_SIZE(names);
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for (int i = 0; i < nlocalsplus; i++) {
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_PyLocals_Kind kind = _PyLocals_GetKind(kinds, i);
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if (kind & CO_FAST_LOCAL) {
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nlocals += 1;
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if (kind & CO_FAST_CELL) {
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ncellvars += 1;
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}
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}
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else if (kind & CO_FAST_CELL) {
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ncellvars += 1;
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nplaincellvars += 1;
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}
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else if (kind & CO_FAST_FREE) {
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nfreevars += 1;
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}
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}
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if (pnlocals != NULL) {
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*pnlocals = nlocals;
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}
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if (pnplaincellvars != NULL) {
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*pnplaincellvars = nplaincellvars;
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}
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if (pncellvars != NULL) {
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*pncellvars = ncellvars;
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}
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if (pnfreevars != NULL) {
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*pnfreevars = nfreevars;
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}
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}
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static PyObject *
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get_localsplus_names(PyCodeObject *co, _PyLocals_Kind kind, int num)
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{
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PyObject *names = PyTuple_New(num);
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if (names == NULL) {
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return NULL;
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}
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int index = 0;
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for (int offset = 0; offset < co->co_nlocalsplus; offset++) {
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_PyLocals_Kind k = _PyLocals_GetKind(co->co_localspluskinds, offset);
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if ((k & kind) == 0) {
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continue;
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}
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assert(index < num);
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PyObject *name = PyTuple_GET_ITEM(co->co_localsplusnames, offset);
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Py_INCREF(name);
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PyTuple_SET_ITEM(names, index, name);
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index += 1;
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}
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assert(index == num);
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return names;
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}
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int
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_PyCode_Validate(struct _PyCodeConstructor *con)
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{
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/* Check argument types */
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if (con->argcount < con->posonlyargcount || con->posonlyargcount < 0 ||
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con->kwonlyargcount < 0 ||
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con->stacksize < 0 || con->flags < 0 ||
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con->code == NULL || !PyBytes_Check(con->code) ||
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con->consts == NULL || !PyTuple_Check(con->consts) ||
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con->names == NULL || !PyTuple_Check(con->names) ||
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con->localsplusnames == NULL || !PyTuple_Check(con->localsplusnames) ||
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con->localspluskinds == NULL || !PyBytes_Check(con->localspluskinds) ||
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PyTuple_GET_SIZE(con->localsplusnames)
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!= PyBytes_GET_SIZE(con->localspluskinds) ||
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con->name == NULL || !PyUnicode_Check(con->name) ||
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con->qualname == NULL || !PyUnicode_Check(con->qualname) ||
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con->filename == NULL || !PyUnicode_Check(con->filename) ||
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con->linetable == NULL || !PyBytes_Check(con->linetable) ||
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con->endlinetable == NULL ||
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(con->endlinetable != Py_None && !PyBytes_Check(con->endlinetable)) ||
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con->columntable == NULL ||
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(con->columntable != Py_None && !PyBytes_Check(con->columntable)) ||
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con->exceptiontable == NULL || !PyBytes_Check(con->exceptiontable)
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) {
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PyErr_BadInternalCall();
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return -1;
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}
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/* Make sure that code is indexable with an int, this is
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a long running assumption in ceval.c and many parts of
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the interpreter. */
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if (PyBytes_GET_SIZE(con->code) > INT_MAX) {
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PyErr_SetString(PyExc_OverflowError,
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"code: co_code larger than INT_MAX");
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return -1;
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}
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if (PyBytes_GET_SIZE(con->code) % sizeof(_Py_CODEUNIT) != 0 ||
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!_Py_IS_ALIGNED(PyBytes_AS_STRING(con->code), sizeof(_Py_CODEUNIT))
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) {
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PyErr_SetString(PyExc_ValueError, "code: co_code is malformed");
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return -1;
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}
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/* Ensure that the co_varnames has enough names to cover the arg counts.
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* Note that totalargs = nlocals - nplainlocals. We check nplainlocals
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* here to avoid the possibility of overflow (however remote). */
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int nlocals;
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get_localsplus_counts(con->localsplusnames, con->localspluskinds,
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&nlocals, NULL, NULL, NULL);
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int nplainlocals = nlocals -
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con->argcount -
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con->kwonlyargcount -
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((con->flags & CO_VARARGS) != 0) -
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((con->flags & CO_VARKEYWORDS) != 0);
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if (nplainlocals < 0) {
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PyErr_SetString(PyExc_ValueError, "code: co_varnames is too small");
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return -1;
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}
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return 0;
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}
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static void
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init_code(PyCodeObject *co, struct _PyCodeConstructor *con)
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{
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int nlocalsplus = (int)PyTuple_GET_SIZE(con->localsplusnames);
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int nlocals, nplaincellvars, ncellvars, nfreevars;
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get_localsplus_counts(con->localsplusnames, con->localspluskinds,
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&nlocals, &nplaincellvars, &ncellvars, &nfreevars);
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Py_INCREF(con->filename);
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co->co_filename = con->filename;
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Py_INCREF(con->name);
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co->co_name = con->name;
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Py_INCREF(con->qualname);
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co->co_qualname = con->qualname;
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co->co_flags = con->flags;
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Py_INCREF(con->code);
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co->co_code = con->code;
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co->co_firstinstr = (_Py_CODEUNIT *)PyBytes_AS_STRING(con->code);
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co->co_firstlineno = con->firstlineno;
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Py_INCREF(con->linetable);
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co->co_linetable = con->linetable;
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Py_INCREF(con->endlinetable);
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co->co_endlinetable = con->endlinetable;
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Py_INCREF(con->columntable);
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co->co_columntable = con->columntable;
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Py_INCREF(con->consts);
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co->co_consts = con->consts;
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Py_INCREF(con->names);
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co->co_names = con->names;
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Py_INCREF(con->localsplusnames);
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co->co_localsplusnames = con->localsplusnames;
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Py_INCREF(con->localspluskinds);
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co->co_localspluskinds = con->localspluskinds;
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co->co_argcount = con->argcount;
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co->co_posonlyargcount = con->posonlyargcount;
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co->co_kwonlyargcount = con->kwonlyargcount;
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co->co_stacksize = con->stacksize;
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Py_INCREF(con->exceptiontable);
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co->co_exceptiontable = con->exceptiontable;
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/* derived values */
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co->co_nlocalsplus = nlocalsplus;
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co->co_nlocals = nlocals;
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co->co_nplaincellvars = nplaincellvars;
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co->co_ncellvars = ncellvars;
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co->co_nfreevars = nfreevars;
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co->co_varnames = NULL;
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co->co_cellvars = NULL;
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co->co_freevars = NULL;
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/* not set */
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co->co_weakreflist = NULL;
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co->co_extra = NULL;
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co->co_warmup = QUICKENING_INITIAL_WARMUP_VALUE;
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co->co_quickened = NULL;
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}
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/* The caller is responsible for ensuring that the given data is valid. */
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PyCodeObject *
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_PyCode_New(struct _PyCodeConstructor *con)
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{
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/* Ensure that strings are ready Unicode string */
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if (PyUnicode_READY(con->name) < 0) {
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return NULL;
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}
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if (PyUnicode_READY(con->qualname) < 0) {
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return NULL;
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}
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if (PyUnicode_READY(con->filename) < 0) {
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return NULL;
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}
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if (intern_strings(con->names) < 0) {
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return NULL;
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}
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if (intern_string_constants(con->consts, NULL) < 0) {
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return NULL;
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}
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if (intern_strings(con->localsplusnames) < 0) {
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return NULL;
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}
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// Discard the endlinetable and columntable if we are opted out of debug
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// ranges.
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if (!_Py_GetConfig()->code_debug_ranges) {
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con->endlinetable = Py_None;
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con->columntable = Py_None;
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}
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PyCodeObject *co = PyObject_New(PyCodeObject, &PyCode_Type);
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if (co == NULL) {
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PyErr_NoMemory();
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return NULL;
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}
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init_code(co, con);
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return co;
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}
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/******************
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* the legacy "constructors"
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******************/
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PyCodeObject *
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PyCode_NewWithPosOnlyArgs(int argcount, int posonlyargcount, int kwonlyargcount,
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int nlocals, int stacksize, int flags,
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PyObject *code, PyObject *consts, PyObject *names,
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PyObject *varnames, PyObject *freevars, PyObject *cellvars,
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PyObject *filename, PyObject *name,
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PyObject *qualname, int firstlineno,
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PyObject *linetable, PyObject *endlinetable,
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PyObject *columntable, PyObject *exceptiontable)
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{
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PyCodeObject *co = NULL;
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PyObject *localsplusnames = NULL;
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PyObject *localspluskinds = NULL;
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if (varnames == NULL || !PyTuple_Check(varnames) ||
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cellvars == NULL || !PyTuple_Check(cellvars) ||
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freevars == NULL || !PyTuple_Check(freevars)
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) {
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PyErr_BadInternalCall();
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return NULL;
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}
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// Set the "fast locals plus" info.
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int nvarnames = (int)PyTuple_GET_SIZE(varnames);
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int ncellvars = (int)PyTuple_GET_SIZE(cellvars);
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int nfreevars = (int)PyTuple_GET_SIZE(freevars);
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int nlocalsplus = nvarnames + ncellvars + nfreevars;
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localsplusnames = PyTuple_New(nlocalsplus);
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if (localsplusnames == NULL) {
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goto error;
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}
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localspluskinds = PyBytes_FromStringAndSize(NULL, nlocalsplus);
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if (localspluskinds == NULL) {
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goto error;
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}
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int offset = 0;
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for (int i = 0; i < nvarnames; i++, offset++) {
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PyObject *name = PyTuple_GET_ITEM(varnames, i);
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_Py_set_localsplus_info(offset, name, CO_FAST_LOCAL,
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localsplusnames, localspluskinds);
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}
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for (int i = 0; i < ncellvars; i++, offset++) {
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PyObject *name = PyTuple_GET_ITEM(cellvars, i);
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int argoffset = -1;
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for (int j = 0; j < nvarnames; j++) {
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int cmp = PyUnicode_Compare(PyTuple_GET_ITEM(varnames, j),
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name);
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assert(!PyErr_Occurred());
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if (cmp == 0) {
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argoffset = j;
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break;
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}
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}
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if (argoffset >= 0) {
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// Merge the localsplus indices.
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nlocalsplus -= 1;
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offset -= 1;
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_PyLocals_Kind kind = _PyLocals_GetKind(localspluskinds, argoffset);
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_PyLocals_SetKind(localspluskinds, argoffset, kind | CO_FAST_CELL);
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continue;
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}
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_Py_set_localsplus_info(offset, name, CO_FAST_CELL,
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localsplusnames, localspluskinds);
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}
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for (int i = 0; i < nfreevars; i++, offset++) {
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PyObject *name = PyTuple_GET_ITEM(freevars, i);
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_Py_set_localsplus_info(offset, name, CO_FAST_FREE,
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localsplusnames, localspluskinds);
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}
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// If any cells were args then nlocalsplus will have shrunk.
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if (nlocalsplus != PyTuple_GET_SIZE(localsplusnames)) {
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if (_PyTuple_Resize(&localsplusnames, nlocalsplus) < 0
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|| _PyBytes_Resize(&localspluskinds, nlocalsplus) < 0) {
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goto error;
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}
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}
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struct _PyCodeConstructor con = {
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.filename = filename,
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.name = name,
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.qualname = qualname,
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.flags = flags,
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.code = code,
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.firstlineno = firstlineno,
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.linetable = linetable,
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.endlinetable = endlinetable,
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.columntable = columntable,
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.consts = consts,
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.names = names,
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.localsplusnames = localsplusnames,
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.localspluskinds = localspluskinds,
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.argcount = argcount,
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.posonlyargcount = posonlyargcount,
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.kwonlyargcount = kwonlyargcount,
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|
|
.stacksize = stacksize,
|
|
|
|
.exceptiontable = exceptiontable,
|
|
};
|
|
|
|
if (_PyCode_Validate(&con) < 0) {
|
|
goto error;
|
|
}
|
|
assert(PyBytes_GET_SIZE(code) % sizeof(_Py_CODEUNIT) == 0);
|
|
assert(_Py_IS_ALIGNED(PyBytes_AS_STRING(code), sizeof(_Py_CODEUNIT)));
|
|
if (nlocals != PyTuple_GET_SIZE(varnames)) {
|
|
PyErr_SetString(PyExc_ValueError,
|
|
"code: co_nlocals != len(co_varnames)");
|
|
goto error;
|
|
}
|
|
|
|
co = _PyCode_New(&con);
|
|
if (co == NULL) {
|
|
goto error;
|
|
}
|
|
|
|
Py_INCREF(varnames);
|
|
co->co_varnames = varnames;
|
|
Py_INCREF(cellvars);
|
|
co->co_cellvars = cellvars;
|
|
Py_INCREF(freevars);
|
|
co->co_freevars = freevars;
|
|
|
|
error:
|
|
Py_XDECREF(localsplusnames);
|
|
Py_XDECREF(localspluskinds);
|
|
return co;
|
|
}
|
|
|
|
PyCodeObject *
|
|
PyCode_New(int argcount, int kwonlyargcount,
|
|
int nlocals, int stacksize, int flags,
|
|
PyObject *code, PyObject *consts, PyObject *names,
|
|
PyObject *varnames, PyObject *freevars, PyObject *cellvars,
|
|
PyObject *filename, PyObject *name, PyObject *qualname,
|
|
int firstlineno, PyObject *linetable, PyObject *endlinetable,
|
|
PyObject *columntable, PyObject *exceptiontable)
|
|
{
|
|
return PyCode_NewWithPosOnlyArgs(argcount, 0, kwonlyargcount, nlocals,
|
|
stacksize, flags, code, consts, names,
|
|
varnames, freevars, cellvars, filename,
|
|
name, qualname, firstlineno, linetable,
|
|
endlinetable, columntable, exceptiontable);
|
|
}
|
|
|
|
PyCodeObject *
|
|
PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno)
|
|
{
|
|
PyObject *nulltuple = NULL;
|
|
PyObject *filename_ob = NULL;
|
|
PyObject *funcname_ob = NULL;
|
|
PyCodeObject *result = NULL;
|
|
|
|
nulltuple = PyTuple_New(0);
|
|
if (nulltuple == NULL) {
|
|
goto failed;
|
|
}
|
|
funcname_ob = PyUnicode_FromString(funcname);
|
|
if (funcname_ob == NULL) {
|
|
goto failed;
|
|
}
|
|
filename_ob = PyUnicode_DecodeFSDefault(filename);
|
|
if (filename_ob == NULL) {
|
|
goto failed;
|
|
}
|
|
|
|
#define emptystring (PyObject *)&_Py_SINGLETON(bytes_empty)
|
|
struct _PyCodeConstructor con = {
|
|
.filename = filename_ob,
|
|
.name = funcname_ob,
|
|
.qualname = funcname_ob,
|
|
.code = emptystring,
|
|
.firstlineno = firstlineno,
|
|
.linetable = emptystring,
|
|
.endlinetable = emptystring,
|
|
.columntable = emptystring,
|
|
.consts = nulltuple,
|
|
.names = nulltuple,
|
|
.localsplusnames = nulltuple,
|
|
.localspluskinds = emptystring,
|
|
.exceptiontable = emptystring,
|
|
};
|
|
result = _PyCode_New(&con);
|
|
|
|
failed:
|
|
Py_XDECREF(nulltuple);
|
|
Py_XDECREF(funcname_ob);
|
|
Py_XDECREF(filename_ob);
|
|
return result;
|
|
}
|
|
|
|
|
|
/******************
|
|
* source location tracking (co_lines/co_positions)
|
|
******************/
|
|
|
|
/* Use co_linetable to compute the line number from a bytecode index, addrq. See
|
|
lnotab_notes.txt for the details of the lnotab representation.
|
|
*/
|
|
|
|
int
|
|
PyCode_Addr2Line(PyCodeObject *co, int addrq)
|
|
{
|
|
if (addrq < 0) {
|
|
return co->co_firstlineno;
|
|
}
|
|
assert(addrq >= 0 && addrq < PyBytes_GET_SIZE(co->co_code));
|
|
PyCodeAddressRange bounds;
|
|
_PyCode_InitAddressRange(co, &bounds);
|
|
return _PyCode_CheckLineNumber(addrq, &bounds);
|
|
}
|
|
|
|
int
|
|
PyCode_Addr2Location(PyCodeObject *co, int addrq,
|
|
int *start_line, int *start_column,
|
|
int *end_line, int *end_column)
|
|
{
|
|
*start_line = PyCode_Addr2Line(co, addrq);
|
|
*start_column = _PyCode_Addr2Offset(co, addrq);
|
|
*end_line = _PyCode_Addr2EndLine(co, addrq);
|
|
*end_column = _PyCode_Addr2EndOffset(co, addrq);
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
_PyCode_Addr2EndLine(PyCodeObject* co, int addrq)
|
|
{
|
|
if (addrq < 0) {
|
|
return co->co_firstlineno;
|
|
}
|
|
else if (co->co_endlinetable == Py_None) {
|
|
return -1;
|
|
}
|
|
|
|
assert(addrq >= 0 && addrq < PyBytes_GET_SIZE(co->co_code));
|
|
PyCodeAddressRange bounds;
|
|
_PyCode_InitEndAddressRange(co, &bounds);
|
|
return _PyCode_CheckLineNumber(addrq, &bounds);
|
|
}
|
|
|
|
int
|
|
_PyCode_Addr2Offset(PyCodeObject* co, int addrq)
|
|
{
|
|
if (co->co_columntable == Py_None || addrq < 0) {
|
|
return -1;
|
|
}
|
|
addrq /= sizeof(_Py_CODEUNIT);
|
|
if (addrq*2 >= PyBytes_GET_SIZE(co->co_columntable)) {
|
|
return -1;
|
|
}
|
|
|
|
unsigned char* bytes = (unsigned char*)PyBytes_AS_STRING(co->co_columntable);
|
|
return bytes[addrq*2] - 1;
|
|
}
|
|
|
|
int
|
|
_PyCode_Addr2EndOffset(PyCodeObject* co, int addrq)
|
|
{
|
|
if (co->co_columntable == Py_None || addrq < 0) {
|
|
return -1;
|
|
}
|
|
addrq /= sizeof(_Py_CODEUNIT);
|
|
if (addrq*2+1 >= PyBytes_GET_SIZE(co->co_columntable)) {
|
|
return -1;
|
|
}
|
|
|
|
unsigned char* bytes = (unsigned char*)PyBytes_AS_STRING(co->co_columntable);
|
|
return bytes[addrq*2+1] - 1;
|
|
}
|
|
|
|
void
|
|
_PyLineTable_InitAddressRange(const char *linetable, Py_ssize_t length, int firstlineno, PyCodeAddressRange *range)
|
|
{
|
|
range->opaque.lo_next = linetable;
|
|
range->opaque.limit = range->opaque.lo_next + length;
|
|
range->ar_start = -1;
|
|
range->ar_end = 0;
|
|
range->opaque.computed_line = firstlineno;
|
|
range->ar_line = -1;
|
|
}
|
|
|
|
int
|
|
_PyCode_InitAddressRange(PyCodeObject* co, PyCodeAddressRange *bounds)
|
|
{
|
|
const char *linetable = PyBytes_AS_STRING(co->co_linetable);
|
|
Py_ssize_t length = PyBytes_GET_SIZE(co->co_linetable);
|
|
_PyLineTable_InitAddressRange(linetable, length, co->co_firstlineno, bounds);
|
|
return bounds->ar_line;
|
|
}
|
|
|
|
int
|
|
_PyCode_InitEndAddressRange(PyCodeObject* co, PyCodeAddressRange* bounds)
|
|
{
|
|
char* linetable = PyBytes_AS_STRING(co->co_endlinetable);
|
|
Py_ssize_t length = PyBytes_GET_SIZE(co->co_endlinetable);
|
|
_PyLineTable_InitAddressRange(linetable, length, co->co_firstlineno, bounds);
|
|
return bounds->ar_line;
|
|
}
|
|
|
|
/* Update *bounds to describe the first and one-past-the-last instructions in
|
|
the same line as lasti. Return the number of that line, or -1 if lasti is out of bounds. */
|
|
int
|
|
_PyCode_CheckLineNumber(int lasti, PyCodeAddressRange *bounds)
|
|
{
|
|
while (bounds->ar_end <= lasti) {
|
|
if (!_PyLineTable_NextAddressRange(bounds)) {
|
|
return -1;
|
|
}
|
|
}
|
|
while (bounds->ar_start > lasti) {
|
|
if (!_PyLineTable_PreviousAddressRange(bounds)) {
|
|
return -1;
|
|
}
|
|
}
|
|
return bounds->ar_line;
|
|
}
|
|
|
|
static void
|
|
retreat(PyCodeAddressRange *bounds)
|
|
{
|
|
int ldelta = ((signed char *)bounds->opaque.lo_next)[-1];
|
|
if (ldelta == -128) {
|
|
ldelta = 0;
|
|
}
|
|
bounds->opaque.computed_line -= ldelta;
|
|
bounds->opaque.lo_next -= 2;
|
|
bounds->ar_end = bounds->ar_start;
|
|
bounds->ar_start -= ((unsigned char *)bounds->opaque.lo_next)[-2];
|
|
ldelta = ((signed char *)bounds->opaque.lo_next)[-1];
|
|
if (ldelta == -128) {
|
|
bounds->ar_line = -1;
|
|
}
|
|
else {
|
|
bounds->ar_line = bounds->opaque.computed_line;
|
|
}
|
|
}
|
|
|
|
static void
|
|
advance(PyCodeAddressRange *bounds)
|
|
{
|
|
bounds->ar_start = bounds->ar_end;
|
|
int delta = ((unsigned char *)bounds->opaque.lo_next)[0];
|
|
bounds->ar_end += delta;
|
|
int ldelta = ((signed char *)bounds->opaque.lo_next)[1];
|
|
bounds->opaque.lo_next += 2;
|
|
if (ldelta == -128) {
|
|
bounds->ar_line = -1;
|
|
}
|
|
else {
|
|
bounds->opaque.computed_line += ldelta;
|
|
bounds->ar_line = bounds->opaque.computed_line;
|
|
}
|
|
}
|
|
|
|
static inline int
|
|
at_end(PyCodeAddressRange *bounds) {
|
|
return bounds->opaque.lo_next >= bounds->opaque.limit;
|
|
}
|
|
|
|
int
|
|
_PyLineTable_PreviousAddressRange(PyCodeAddressRange *range)
|
|
{
|
|
if (range->ar_start <= 0) {
|
|
return 0;
|
|
}
|
|
retreat(range);
|
|
while (range->ar_start == range->ar_end) {
|
|
assert(range->ar_start > 0);
|
|
retreat(range);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
_PyLineTable_NextAddressRange(PyCodeAddressRange *range)
|
|
{
|
|
if (at_end(range)) {
|
|
return 0;
|
|
}
|
|
advance(range);
|
|
while (range->ar_start == range->ar_end) {
|
|
assert(!at_end(range));
|
|
advance(range);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
emit_pair(PyObject **bytes, int *offset, int a, int b)
|
|
{
|
|
Py_ssize_t len = PyBytes_GET_SIZE(*bytes);
|
|
if (*offset + 2 >= len) {
|
|
if (_PyBytes_Resize(bytes, len * 2) < 0)
|
|
return 0;
|
|
}
|
|
unsigned char *lnotab = (unsigned char *) PyBytes_AS_STRING(*bytes);
|
|
lnotab += *offset;
|
|
*lnotab++ = a;
|
|
*lnotab++ = b;
|
|
*offset += 2;
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
emit_delta(PyObject **bytes, int bdelta, int ldelta, int *offset)
|
|
{
|
|
while (bdelta > 255) {
|
|
if (!emit_pair(bytes, offset, 255, 0)) {
|
|
return 0;
|
|
}
|
|
bdelta -= 255;
|
|
}
|
|
while (ldelta > 127) {
|
|
if (!emit_pair(bytes, offset, bdelta, 127)) {
|
|
return 0;
|
|
}
|
|
bdelta = 0;
|
|
ldelta -= 127;
|
|
}
|
|
while (ldelta < -128) {
|
|
if (!emit_pair(bytes, offset, bdelta, -128)) {
|
|
return 0;
|
|
}
|
|
bdelta = 0;
|
|
ldelta += 128;
|
|
}
|
|
return emit_pair(bytes, offset, bdelta, ldelta);
|
|
}
|
|
|
|
static PyObject *
|
|
decode_linetable(PyCodeObject *code)
|
|
{
|
|
PyCodeAddressRange bounds;
|
|
PyObject *bytes;
|
|
int table_offset = 0;
|
|
int code_offset = 0;
|
|
int line = code->co_firstlineno;
|
|
bytes = PyBytes_FromStringAndSize(NULL, 64);
|
|
if (bytes == NULL) {
|
|
return NULL;
|
|
}
|
|
_PyCode_InitAddressRange(code, &bounds);
|
|
while (_PyLineTable_NextAddressRange(&bounds)) {
|
|
if (bounds.opaque.computed_line != line) {
|
|
int bdelta = bounds.ar_start - code_offset;
|
|
int ldelta = bounds.opaque.computed_line - line;
|
|
if (!emit_delta(&bytes, bdelta, ldelta, &table_offset)) {
|
|
Py_DECREF(bytes);
|
|
return NULL;
|
|
}
|
|
code_offset = bounds.ar_start;
|
|
line = bounds.opaque.computed_line;
|
|
}
|
|
}
|
|
_PyBytes_Resize(&bytes, table_offset);
|
|
return bytes;
|
|
}
|
|
|
|
|
|
typedef struct {
|
|
PyObject_HEAD
|
|
PyCodeObject *li_code;
|
|
PyCodeAddressRange li_line;
|
|
char *li_end;
|
|
} lineiterator;
|
|
|
|
|
|
static void
|
|
lineiter_dealloc(lineiterator *li)
|
|
{
|
|
Py_DECREF(li->li_code);
|
|
Py_TYPE(li)->tp_free(li);
|
|
}
|
|
|
|
static PyObject *
|
|
lineiter_next(lineiterator *li)
|
|
{
|
|
PyCodeAddressRange *bounds = &li->li_line;
|
|
if (!_PyLineTable_NextAddressRange(bounds)) {
|
|
return NULL;
|
|
}
|
|
PyObject *start = NULL;
|
|
PyObject *end = NULL;
|
|
PyObject *line = NULL;
|
|
PyObject *result = PyTuple_New(3);
|
|
start = PyLong_FromLong(bounds->ar_start);
|
|
end = PyLong_FromLong(bounds->ar_end);
|
|
if (bounds->ar_line < 0) {
|
|
Py_INCREF(Py_None);
|
|
line = Py_None;
|
|
}
|
|
else {
|
|
line = PyLong_FromLong(bounds->ar_line);
|
|
}
|
|
if (result == NULL || start == NULL || end == NULL || line == NULL) {
|
|
goto error;
|
|
}
|
|
PyTuple_SET_ITEM(result, 0, start);
|
|
PyTuple_SET_ITEM(result, 1, end);
|
|
PyTuple_SET_ITEM(result, 2, line);
|
|
return result;
|
|
error:
|
|
Py_XDECREF(start);
|
|
Py_XDECREF(end);
|
|
Py_XDECREF(line);
|
|
Py_XDECREF(result);
|
|
return result;
|
|
}
|
|
|
|
static PyTypeObject LineIterator = {
|
|
PyVarObject_HEAD_INIT(&PyType_Type, 0)
|
|
"line_iterator", /* tp_name */
|
|
sizeof(lineiterator), /* tp_basicsize */
|
|
0, /* tp_itemsize */
|
|
/* methods */
|
|
(destructor)lineiter_dealloc, /* tp_dealloc */
|
|
0, /* tp_vectorcall_offset */
|
|
0, /* tp_getattr */
|
|
0, /* tp_setattr */
|
|
0, /* tp_as_async */
|
|
0, /* tp_repr */
|
|
0, /* tp_as_number */
|
|
0, /* tp_as_sequence */
|
|
0, /* tp_as_mapping */
|
|
0, /* tp_hash */
|
|
0, /* tp_call */
|
|
0, /* tp_str */
|
|
0, /* tp_getattro */
|
|
0, /* tp_setattro */
|
|
0, /* tp_as_buffer */
|
|
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
|
|
0, /* tp_doc */
|
|
0, /* tp_traverse */
|
|
0, /* tp_clear */
|
|
0, /* tp_richcompare */
|
|
0, /* tp_weaklistoffset */
|
|
PyObject_SelfIter, /* tp_iter */
|
|
(iternextfunc)lineiter_next, /* tp_iternext */
|
|
0, /* tp_methods */
|
|
0, /* tp_members */
|
|
0, /* tp_getset */
|
|
0, /* tp_base */
|
|
0, /* tp_dict */
|
|
0, /* tp_descr_get */
|
|
0, /* tp_descr_set */
|
|
0, /* tp_dictoffset */
|
|
0, /* tp_init */
|
|
0, /* tp_alloc */
|
|
0, /* tp_new */
|
|
PyObject_Del, /* tp_free */
|
|
};
|
|
|
|
static lineiterator *
|
|
new_linesiterator(PyCodeObject *code)
|
|
{
|
|
lineiterator *li = (lineiterator *)PyType_GenericAlloc(&LineIterator, 0);
|
|
if (li == NULL) {
|
|
return NULL;
|
|
}
|
|
Py_INCREF(code);
|
|
li->li_code = code;
|
|
_PyCode_InitAddressRange(code, &li->li_line);
|
|
return li;
|
|
}
|
|
|
|
/* co_positions iterator object. */
|
|
typedef struct {
|
|
PyObject_HEAD
|
|
PyCodeObject* pi_code;
|
|
int pi_offset;
|
|
} positionsiterator;
|
|
|
|
static void
|
|
positionsiter_dealloc(positionsiterator* pi)
|
|
{
|
|
Py_DECREF(pi->pi_code);
|
|
Py_TYPE(pi)->tp_free(pi);
|
|
}
|
|
|
|
static PyObject*
|
|
_source_offset_converter(int* value) {
|
|
if (*value == -1) {
|
|
Py_RETURN_NONE;
|
|
}
|
|
return PyLong_FromLong(*value);
|
|
}
|
|
|
|
static PyObject*
|
|
positionsiter_next(positionsiterator* pi)
|
|
{
|
|
if (pi->pi_offset >= PyBytes_GET_SIZE(pi->pi_code->co_code)) {
|
|
return NULL;
|
|
}
|
|
|
|
int start_line, start_col, end_line, end_col;
|
|
if (!PyCode_Addr2Location(pi->pi_code, pi->pi_offset, &start_line,
|
|
&start_col, &end_line, &end_col)) {
|
|
return NULL;
|
|
}
|
|
|
|
pi->pi_offset += 2;
|
|
return Py_BuildValue("(O&O&O&O&)",
|
|
_source_offset_converter, &start_line,
|
|
_source_offset_converter, &end_line,
|
|
_source_offset_converter, &start_col,
|
|
_source_offset_converter, &end_col);
|
|
}
|
|
|
|
static PyTypeObject PositionsIterator = {
|
|
PyVarObject_HEAD_INIT(&PyType_Type, 0)
|
|
"positions_iterator", /* tp_name */
|
|
sizeof(positionsiterator), /* tp_basicsize */
|
|
0, /* tp_itemsize */
|
|
/* methods */
|
|
(destructor)positionsiter_dealloc, /* tp_dealloc */
|
|
0, /* tp_vectorcall_offset */
|
|
0, /* tp_getattr */
|
|
0, /* tp_setattr */
|
|
0, /* tp_as_async */
|
|
0, /* tp_repr */
|
|
0, /* tp_as_number */
|
|
0, /* tp_as_sequence */
|
|
0, /* tp_as_mapping */
|
|
0, /* tp_hash */
|
|
0, /* tp_call */
|
|
0, /* tp_str */
|
|
0, /* tp_getattro */
|
|
0, /* tp_setattro */
|
|
0, /* tp_as_buffer */
|
|
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
|
|
0, /* tp_doc */
|
|
0, /* tp_traverse */
|
|
0, /* tp_clear */
|
|
0, /* tp_richcompare */
|
|
0, /* tp_weaklistoffset */
|
|
PyObject_SelfIter, /* tp_iter */
|
|
(iternextfunc)positionsiter_next, /* tp_iternext */
|
|
0, /* tp_methods */
|
|
0, /* tp_members */
|
|
0, /* tp_getset */
|
|
0, /* tp_base */
|
|
0, /* tp_dict */
|
|
0, /* tp_descr_get */
|
|
0, /* tp_descr_set */
|
|
0, /* tp_dictoffset */
|
|
0, /* tp_init */
|
|
0, /* tp_alloc */
|
|
0, /* tp_new */
|
|
PyObject_Del, /* tp_free */
|
|
};
|
|
|
|
static PyObject*
|
|
code_positionsiterator(PyCodeObject* code, PyObject* Py_UNUSED(args))
|
|
{
|
|
positionsiterator* pi = (positionsiterator*)PyType_GenericAlloc(&PositionsIterator, 0);
|
|
if (pi == NULL) {
|
|
return NULL;
|
|
}
|
|
Py_INCREF(code);
|
|
pi->pi_code = code;
|
|
pi->pi_offset = 0;
|
|
return (PyObject*)pi;
|
|
}
|
|
|
|
|
|
/******************
|
|
* "extra" frame eval info (see PEP 523)
|
|
******************/
|
|
|
|
/* Holder for co_extra information */
|
|
typedef struct {
|
|
Py_ssize_t ce_size;
|
|
void *ce_extras[1];
|
|
} _PyCodeObjectExtra;
|
|
|
|
|
|
int
|
|
_PyCode_GetExtra(PyObject *code, Py_ssize_t index, void **extra)
|
|
{
|
|
if (!PyCode_Check(code)) {
|
|
PyErr_BadInternalCall();
|
|
return -1;
|
|
}
|
|
|
|
PyCodeObject *o = (PyCodeObject*) code;
|
|
_PyCodeObjectExtra *co_extra = (_PyCodeObjectExtra*) o->co_extra;
|
|
|
|
if (co_extra == NULL || co_extra->ce_size <= index) {
|
|
*extra = NULL;
|
|
return 0;
|
|
}
|
|
|
|
*extra = co_extra->ce_extras[index];
|
|
return 0;
|
|
}
|
|
|
|
|
|
int
|
|
_PyCode_SetExtra(PyObject *code, Py_ssize_t index, void *extra)
|
|
{
|
|
PyInterpreterState *interp = _PyInterpreterState_GET();
|
|
|
|
if (!PyCode_Check(code) || index < 0 ||
|
|
index >= interp->co_extra_user_count) {
|
|
PyErr_BadInternalCall();
|
|
return -1;
|
|
}
|
|
|
|
PyCodeObject *o = (PyCodeObject*) code;
|
|
_PyCodeObjectExtra *co_extra = (_PyCodeObjectExtra *) o->co_extra;
|
|
|
|
if (co_extra == NULL || co_extra->ce_size <= index) {
|
|
Py_ssize_t i = (co_extra == NULL ? 0 : co_extra->ce_size);
|
|
co_extra = PyMem_Realloc(
|
|
co_extra,
|
|
sizeof(_PyCodeObjectExtra) +
|
|
(interp->co_extra_user_count-1) * sizeof(void*));
|
|
if (co_extra == NULL) {
|
|
return -1;
|
|
}
|
|
for (; i < interp->co_extra_user_count; i++) {
|
|
co_extra->ce_extras[i] = NULL;
|
|
}
|
|
co_extra->ce_size = interp->co_extra_user_count;
|
|
o->co_extra = co_extra;
|
|
}
|
|
|
|
if (co_extra->ce_extras[index] != NULL) {
|
|
freefunc free = interp->co_extra_freefuncs[index];
|
|
if (free != NULL) {
|
|
free(co_extra->ce_extras[index]);
|
|
}
|
|
}
|
|
|
|
co_extra->ce_extras[index] = extra;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/******************
|
|
* other PyCodeObject accessor functions
|
|
******************/
|
|
|
|
PyObject *
|
|
_PyCode_GetVarnames(PyCodeObject *co)
|
|
{
|
|
if (co->co_varnames == NULL) {
|
|
// PyCodeObject owns this reference.
|
|
co->co_varnames = get_localsplus_names(co, CO_FAST_LOCAL,
|
|
co->co_nlocals);
|
|
if (co->co_varnames == NULL) {
|
|
return NULL;
|
|
}
|
|
}
|
|
Py_INCREF(co->co_varnames);
|
|
return co->co_varnames;
|
|
}
|
|
|
|
PyObject *
|
|
_PyCode_GetCellvars(PyCodeObject *co)
|
|
{
|
|
if (co->co_cellvars == NULL) {
|
|
// PyCodeObject owns this reference.
|
|
co->co_cellvars = get_localsplus_names(co, CO_FAST_CELL,
|
|
co->co_ncellvars);
|
|
if (co->co_cellvars == NULL) {
|
|
return NULL;
|
|
}
|
|
}
|
|
Py_INCREF(co->co_cellvars);
|
|
return co->co_cellvars;
|
|
}
|
|
|
|
PyObject *
|
|
_PyCode_GetFreevars(PyCodeObject *co)
|
|
{
|
|
if (co->co_freevars == NULL) {
|
|
// PyCodeObject owns this reference.
|
|
co->co_freevars = get_localsplus_names(co, CO_FAST_FREE,
|
|
co->co_nfreevars);
|
|
if (co->co_freevars == NULL) {
|
|
return NULL;
|
|
}
|
|
}
|
|
Py_INCREF(co->co_freevars);
|
|
return co->co_freevars;
|
|
}
|
|
|
|
|
|
/******************
|
|
* PyCode_Type
|
|
******************/
|
|
|
|
/*[clinic input]
|
|
class code "PyCodeObject *" "&PyCode_Type"
|
|
[clinic start generated code]*/
|
|
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=78aa5d576683bb4b]*/
|
|
|
|
/*[clinic input]
|
|
@classmethod
|
|
code.__new__ as code_new
|
|
|
|
argcount: int
|
|
posonlyargcount: int
|
|
kwonlyargcount: int
|
|
nlocals: int
|
|
stacksize: int
|
|
flags: int
|
|
codestring as code: object(subclass_of="&PyBytes_Type")
|
|
constants as consts: object(subclass_of="&PyTuple_Type")
|
|
names: object(subclass_of="&PyTuple_Type")
|
|
varnames: object(subclass_of="&PyTuple_Type")
|
|
filename: unicode
|
|
name: unicode
|
|
qualname: unicode
|
|
firstlineno: int
|
|
linetable: object(subclass_of="&PyBytes_Type")
|
|
endlinetable: object
|
|
columntable: object
|
|
exceptiontable: object(subclass_of="&PyBytes_Type")
|
|
freevars: object(subclass_of="&PyTuple_Type", c_default="NULL") = ()
|
|
cellvars: object(subclass_of="&PyTuple_Type", c_default="NULL") = ()
|
|
/
|
|
|
|
Create a code object. Not for the faint of heart.
|
|
[clinic start generated code]*/
|
|
|
|
static PyObject *
|
|
code_new_impl(PyTypeObject *type, int argcount, int posonlyargcount,
|
|
int kwonlyargcount, int nlocals, int stacksize, int flags,
|
|
PyObject *code, PyObject *consts, PyObject *names,
|
|
PyObject *varnames, PyObject *filename, PyObject *name,
|
|
PyObject *qualname, int firstlineno, PyObject *linetable,
|
|
PyObject *endlinetable, PyObject *columntable,
|
|
PyObject *exceptiontable, PyObject *freevars,
|
|
PyObject *cellvars)
|
|
/*[clinic end generated code: output=e1d2086aa8da7c08 input=a06cd92369134063]*/
|
|
{
|
|
PyObject *co = NULL;
|
|
PyObject *ournames = NULL;
|
|
PyObject *ourvarnames = NULL;
|
|
PyObject *ourfreevars = NULL;
|
|
PyObject *ourcellvars = NULL;
|
|
|
|
if (PySys_Audit("code.__new__", "OOOiiiiii",
|
|
code, filename, name, argcount, posonlyargcount,
|
|
kwonlyargcount, nlocals, stacksize, flags) < 0) {
|
|
goto cleanup;
|
|
}
|
|
|
|
if (argcount < 0) {
|
|
PyErr_SetString(
|
|
PyExc_ValueError,
|
|
"code: argcount must not be negative");
|
|
goto cleanup;
|
|
}
|
|
|
|
if (posonlyargcount < 0) {
|
|
PyErr_SetString(
|
|
PyExc_ValueError,
|
|
"code: posonlyargcount must not be negative");
|
|
goto cleanup;
|
|
}
|
|
|
|
if (kwonlyargcount < 0) {
|
|
PyErr_SetString(
|
|
PyExc_ValueError,
|
|
"code: kwonlyargcount must not be negative");
|
|
goto cleanup;
|
|
}
|
|
if (nlocals < 0) {
|
|
PyErr_SetString(
|
|
PyExc_ValueError,
|
|
"code: nlocals must not be negative");
|
|
goto cleanup;
|
|
}
|
|
|
|
if (!Py_IsNone(endlinetable) && !PyBytes_Check(endlinetable)) {
|
|
PyErr_SetString(PyExc_ValueError,
|
|
"code: endlinetable must be None or bytes");
|
|
goto cleanup;
|
|
}
|
|
if (!Py_IsNone(columntable) && !PyBytes_Check(columntable)) {
|
|
PyErr_SetString(PyExc_ValueError,
|
|
"code: columntable must be None or bytes");
|
|
goto cleanup;
|
|
}
|
|
|
|
ournames = validate_and_copy_tuple(names);
|
|
if (ournames == NULL)
|
|
goto cleanup;
|
|
ourvarnames = validate_and_copy_tuple(varnames);
|
|
if (ourvarnames == NULL)
|
|
goto cleanup;
|
|
if (freevars)
|
|
ourfreevars = validate_and_copy_tuple(freevars);
|
|
else
|
|
ourfreevars = PyTuple_New(0);
|
|
if (ourfreevars == NULL)
|
|
goto cleanup;
|
|
if (cellvars)
|
|
ourcellvars = validate_and_copy_tuple(cellvars);
|
|
else
|
|
ourcellvars = PyTuple_New(0);
|
|
if (ourcellvars == NULL)
|
|
goto cleanup;
|
|
|
|
co = (PyObject *)PyCode_NewWithPosOnlyArgs(argcount, posonlyargcount,
|
|
kwonlyargcount,
|
|
nlocals, stacksize, flags,
|
|
code, consts, ournames,
|
|
ourvarnames, ourfreevars,
|
|
ourcellvars, filename,
|
|
name, qualname, firstlineno,
|
|
linetable, endlinetable,
|
|
columntable, exceptiontable
|
|
);
|
|
cleanup:
|
|
Py_XDECREF(ournames);
|
|
Py_XDECREF(ourvarnames);
|
|
Py_XDECREF(ourfreevars);
|
|
Py_XDECREF(ourcellvars);
|
|
return co;
|
|
}
|
|
|
|
static void
|
|
code_dealloc(PyCodeObject *co)
|
|
{
|
|
if (co->co_extra != NULL) {
|
|
PyInterpreterState *interp = _PyInterpreterState_GET();
|
|
_PyCodeObjectExtra *co_extra = co->co_extra;
|
|
|
|
for (Py_ssize_t i = 0; i < co_extra->ce_size; i++) {
|
|
freefunc free_extra = interp->co_extra_freefuncs[i];
|
|
|
|
if (free_extra != NULL) {
|
|
free_extra(co_extra->ce_extras[i]);
|
|
}
|
|
}
|
|
|
|
PyMem_Free(co_extra);
|
|
}
|
|
|
|
Py_XDECREF(co->co_code);
|
|
Py_XDECREF(co->co_consts);
|
|
Py_XDECREF(co->co_names);
|
|
Py_XDECREF(co->co_localsplusnames);
|
|
Py_XDECREF(co->co_localspluskinds);
|
|
Py_XDECREF(co->co_varnames);
|
|
Py_XDECREF(co->co_freevars);
|
|
Py_XDECREF(co->co_cellvars);
|
|
Py_XDECREF(co->co_filename);
|
|
Py_XDECREF(co->co_name);
|
|
Py_XDECREF(co->co_qualname);
|
|
Py_XDECREF(co->co_linetable);
|
|
Py_XDECREF(co->co_endlinetable);
|
|
Py_XDECREF(co->co_columntable);
|
|
Py_XDECREF(co->co_exceptiontable);
|
|
if (co->co_weakreflist != NULL)
|
|
PyObject_ClearWeakRefs((PyObject*)co);
|
|
if (co->co_quickened) {
|
|
PyMem_Free(co->co_quickened);
|
|
_Py_QuickenedCount--;
|
|
}
|
|
PyObject_Free(co);
|
|
}
|
|
|
|
static PyObject *
|
|
code_repr(PyCodeObject *co)
|
|
{
|
|
int lineno;
|
|
if (co->co_firstlineno != 0)
|
|
lineno = co->co_firstlineno;
|
|
else
|
|
lineno = -1;
|
|
if (co->co_filename && PyUnicode_Check(co->co_filename)) {
|
|
return PyUnicode_FromFormat(
|
|
"<code object %U at %p, file \"%U\", line %d>",
|
|
co->co_name, co, co->co_filename, lineno);
|
|
} else {
|
|
return PyUnicode_FromFormat(
|
|
"<code object %U at %p, file ???, line %d>",
|
|
co->co_name, co, lineno);
|
|
}
|
|
}
|
|
|
|
static PyObject *
|
|
code_richcompare(PyObject *self, PyObject *other, int op)
|
|
{
|
|
PyCodeObject *co, *cp;
|
|
int eq;
|
|
PyObject *consts1, *consts2;
|
|
PyObject *res;
|
|
|
|
if ((op != Py_EQ && op != Py_NE) ||
|
|
!PyCode_Check(self) ||
|
|
!PyCode_Check(other)) {
|
|
Py_RETURN_NOTIMPLEMENTED;
|
|
}
|
|
|
|
co = (PyCodeObject *)self;
|
|
cp = (PyCodeObject *)other;
|
|
|
|
eq = PyObject_RichCompareBool(co->co_name, cp->co_name, Py_EQ);
|
|
if (!eq) goto unequal;
|
|
eq = co->co_argcount == cp->co_argcount;
|
|
if (!eq) goto unequal;
|
|
eq = co->co_posonlyargcount == cp->co_posonlyargcount;
|
|
if (!eq) goto unequal;
|
|
eq = co->co_kwonlyargcount == cp->co_kwonlyargcount;
|
|
if (!eq) goto unequal;
|
|
eq = co->co_flags == cp->co_flags;
|
|
if (!eq) goto unequal;
|
|
eq = co->co_firstlineno == cp->co_firstlineno;
|
|
if (!eq) goto unequal;
|
|
eq = PyObject_RichCompareBool(co->co_code, cp->co_code, Py_EQ);
|
|
if (eq <= 0) goto unequal;
|
|
|
|
/* compare constants */
|
|
consts1 = _PyCode_ConstantKey(co->co_consts);
|
|
if (!consts1)
|
|
return NULL;
|
|
consts2 = _PyCode_ConstantKey(cp->co_consts);
|
|
if (!consts2) {
|
|
Py_DECREF(consts1);
|
|
return NULL;
|
|
}
|
|
eq = PyObject_RichCompareBool(consts1, consts2, Py_EQ);
|
|
Py_DECREF(consts1);
|
|
Py_DECREF(consts2);
|
|
if (eq <= 0) goto unequal;
|
|
|
|
eq = PyObject_RichCompareBool(co->co_names, cp->co_names, Py_EQ);
|
|
if (eq <= 0) goto unequal;
|
|
eq = PyObject_RichCompareBool(co->co_localsplusnames,
|
|
cp->co_localsplusnames, Py_EQ);
|
|
if (eq <= 0) goto unequal;
|
|
|
|
if (op == Py_EQ)
|
|
res = Py_True;
|
|
else
|
|
res = Py_False;
|
|
goto done;
|
|
|
|
unequal:
|
|
if (eq < 0)
|
|
return NULL;
|
|
if (op == Py_NE)
|
|
res = Py_True;
|
|
else
|
|
res = Py_False;
|
|
|
|
done:
|
|
Py_INCREF(res);
|
|
return res;
|
|
}
|
|
|
|
static Py_hash_t
|
|
code_hash(PyCodeObject *co)
|
|
{
|
|
Py_hash_t h, h0, h1, h2, h3, h4;
|
|
h0 = PyObject_Hash(co->co_name);
|
|
if (h0 == -1) return -1;
|
|
h1 = PyObject_Hash(co->co_code);
|
|
if (h1 == -1) return -1;
|
|
h2 = PyObject_Hash(co->co_consts);
|
|
if (h2 == -1) return -1;
|
|
h3 = PyObject_Hash(co->co_names);
|
|
if (h3 == -1) return -1;
|
|
h4 = PyObject_Hash(co->co_localsplusnames);
|
|
if (h4 == -1) return -1;
|
|
h = h0 ^ h1 ^ h2 ^ h3 ^ h4 ^
|
|
co->co_argcount ^ co->co_posonlyargcount ^ co->co_kwonlyargcount ^
|
|
co->co_flags;
|
|
if (h == -1) h = -2;
|
|
return h;
|
|
}
|
|
|
|
|
|
#define OFF(x) offsetof(PyCodeObject, x)
|
|
|
|
static PyMemberDef code_memberlist[] = {
|
|
{"co_argcount", T_INT, OFF(co_argcount), READONLY},
|
|
{"co_posonlyargcount", T_INT, OFF(co_posonlyargcount), READONLY},
|
|
{"co_kwonlyargcount", T_INT, OFF(co_kwonlyargcount), READONLY},
|
|
{"co_stacksize",T_INT, OFF(co_stacksize), READONLY},
|
|
{"co_flags", T_INT, OFF(co_flags), READONLY},
|
|
{"co_code", T_OBJECT, OFF(co_code), READONLY},
|
|
{"co_consts", T_OBJECT, OFF(co_consts), READONLY},
|
|
{"co_names", T_OBJECT, OFF(co_names), READONLY},
|
|
{"co_filename", T_OBJECT, OFF(co_filename), READONLY},
|
|
{"co_name", T_OBJECT, OFF(co_name), READONLY},
|
|
{"co_qualname", T_OBJECT, OFF(co_qualname), READONLY},
|
|
{"co_firstlineno", T_INT, OFF(co_firstlineno), READONLY},
|
|
{"co_linetable", T_OBJECT, OFF(co_linetable), READONLY},
|
|
{"co_endlinetable", T_OBJECT, OFF(co_endlinetable), READONLY},
|
|
{"co_columntable", T_OBJECT, OFF(co_columntable), READONLY},
|
|
{"co_exceptiontable", T_OBJECT, OFF(co_exceptiontable), READONLY},
|
|
{NULL} /* Sentinel */
|
|
};
|
|
|
|
|
|
static PyObject *
|
|
code_getlnotab(PyCodeObject *code, void *closure)
|
|
{
|
|
return decode_linetable(code);
|
|
}
|
|
|
|
static PyObject *
|
|
code_getnlocals(PyCodeObject *code, void *closure)
|
|
{
|
|
return PyLong_FromLong(code->co_nlocals);
|
|
}
|
|
|
|
static PyObject *
|
|
code_getvarnames(PyCodeObject *code, void *closure)
|
|
{
|
|
return _PyCode_GetVarnames(code);
|
|
}
|
|
|
|
static PyObject *
|
|
code_getcellvars(PyCodeObject *code, void *closure)
|
|
{
|
|
return _PyCode_GetCellvars(code);
|
|
}
|
|
|
|
static PyObject *
|
|
code_getfreevars(PyCodeObject *code, void *closure)
|
|
{
|
|
return _PyCode_GetFreevars(code);
|
|
}
|
|
|
|
static PyObject *
|
|
code_getquickened(PyCodeObject *code, void *closure)
|
|
{
|
|
if (code->co_quickened == NULL) {
|
|
Py_RETURN_NONE;
|
|
}
|
|
return PyBytes_FromStringAndSize((char *)code->co_firstinstr,
|
|
PyBytes_Size(code->co_code));
|
|
}
|
|
|
|
static PyGetSetDef code_getsetlist[] = {
|
|
{"co_lnotab", (getter)code_getlnotab, NULL, NULL},
|
|
// The following old names are kept for backward compatibility.
|
|
{"co_nlocals", (getter)code_getnlocals, NULL, NULL},
|
|
{"co_varnames", (getter)code_getvarnames, NULL, NULL},
|
|
{"co_cellvars", (getter)code_getcellvars, NULL, NULL},
|
|
{"co_freevars", (getter)code_getfreevars, NULL, NULL},
|
|
{"_co_quickened", (getter)code_getquickened, NULL, NULL},
|
|
{0}
|
|
};
|
|
|
|
|
|
static PyObject *
|
|
code_sizeof(PyCodeObject *co, PyObject *Py_UNUSED(args))
|
|
{
|
|
Py_ssize_t res = _PyObject_SIZE(Py_TYPE(co));
|
|
|
|
_PyCodeObjectExtra *co_extra = (_PyCodeObjectExtra*) co->co_extra;
|
|
if (co_extra != NULL) {
|
|
res += sizeof(_PyCodeObjectExtra) +
|
|
(co_extra->ce_size-1) * sizeof(co_extra->ce_extras[0]);
|
|
}
|
|
|
|
if (co->co_quickened != NULL) {
|
|
res += PyBytes_GET_SIZE(co->co_code);
|
|
}
|
|
|
|
return PyLong_FromSsize_t(res);
|
|
}
|
|
|
|
static PyObject *
|
|
code_linesiterator(PyCodeObject *code, PyObject *Py_UNUSED(args))
|
|
{
|
|
return (PyObject *)new_linesiterator(code);
|
|
}
|
|
|
|
/*[clinic input]
|
|
code.replace
|
|
|
|
*
|
|
co_argcount: int(c_default="self->co_argcount") = -1
|
|
co_posonlyargcount: int(c_default="self->co_posonlyargcount") = -1
|
|
co_kwonlyargcount: int(c_default="self->co_kwonlyargcount") = -1
|
|
co_nlocals: int(c_default="self->co_nlocals") = -1
|
|
co_stacksize: int(c_default="self->co_stacksize") = -1
|
|
co_flags: int(c_default="self->co_flags") = -1
|
|
co_firstlineno: int(c_default="self->co_firstlineno") = -1
|
|
co_code: PyBytesObject(c_default="(PyBytesObject *)self->co_code") = None
|
|
co_consts: object(subclass_of="&PyTuple_Type", c_default="self->co_consts") = None
|
|
co_names: object(subclass_of="&PyTuple_Type", c_default="self->co_names") = None
|
|
co_varnames: object(subclass_of="&PyTuple_Type", c_default="self->co_varnames") = None
|
|
co_freevars: object(subclass_of="&PyTuple_Type", c_default="self->co_freevars") = None
|
|
co_cellvars: object(subclass_of="&PyTuple_Type", c_default="self->co_cellvars") = None
|
|
co_filename: unicode(c_default="self->co_filename") = None
|
|
co_name: unicode(c_default="self->co_name") = None
|
|
co_qualname: unicode(c_default="self->co_qualname") = None
|
|
co_linetable: PyBytesObject(c_default="(PyBytesObject *)self->co_linetable") = None
|
|
co_endlinetable: object(c_default="self->co_endlinetable") = None
|
|
co_columntable: object(c_default="self->co_columntable") = None
|
|
co_exceptiontable: PyBytesObject(c_default="(PyBytesObject *)self->co_exceptiontable") = None
|
|
|
|
Return a copy of the code object with new values for the specified fields.
|
|
[clinic start generated code]*/
|
|
|
|
static PyObject *
|
|
code_replace_impl(PyCodeObject *self, int co_argcount,
|
|
int co_posonlyargcount, int co_kwonlyargcount,
|
|
int co_nlocals, int co_stacksize, int co_flags,
|
|
int co_firstlineno, PyBytesObject *co_code,
|
|
PyObject *co_consts, PyObject *co_names,
|
|
PyObject *co_varnames, PyObject *co_freevars,
|
|
PyObject *co_cellvars, PyObject *co_filename,
|
|
PyObject *co_name, PyObject *co_qualname,
|
|
PyBytesObject *co_linetable, PyObject *co_endlinetable,
|
|
PyObject *co_columntable, PyBytesObject *co_exceptiontable)
|
|
/*[clinic end generated code: output=f046bf0be3bab91f input=a63d09f248f00794]*/
|
|
{
|
|
#define CHECK_INT_ARG(ARG) \
|
|
if (ARG < 0) { \
|
|
PyErr_SetString(PyExc_ValueError, \
|
|
#ARG " must be a positive integer"); \
|
|
return NULL; \
|
|
}
|
|
|
|
CHECK_INT_ARG(co_argcount);
|
|
CHECK_INT_ARG(co_posonlyargcount);
|
|
CHECK_INT_ARG(co_kwonlyargcount);
|
|
CHECK_INT_ARG(co_nlocals);
|
|
CHECK_INT_ARG(co_stacksize);
|
|
CHECK_INT_ARG(co_flags);
|
|
CHECK_INT_ARG(co_firstlineno);
|
|
|
|
#undef CHECK_INT_ARG
|
|
|
|
if (PySys_Audit("code.__new__", "OOOiiiiii",
|
|
co_code, co_filename, co_name, co_argcount,
|
|
co_posonlyargcount, co_kwonlyargcount, co_nlocals,
|
|
co_stacksize, co_flags) < 0) {
|
|
return NULL;
|
|
}
|
|
|
|
PyCodeObject *co = NULL;
|
|
PyObject *varnames = NULL;
|
|
PyObject *cellvars = NULL;
|
|
PyObject *freevars = NULL;
|
|
if (co_varnames == NULL) {
|
|
varnames = get_localsplus_names(self, CO_FAST_LOCAL, self->co_nlocals);
|
|
if (varnames == NULL) {
|
|
goto error;
|
|
}
|
|
co_varnames = varnames;
|
|
}
|
|
if (co_cellvars == NULL) {
|
|
cellvars = get_localsplus_names(self, CO_FAST_CELL, self->co_ncellvars);
|
|
if (cellvars == NULL) {
|
|
goto error;
|
|
}
|
|
co_cellvars = cellvars;
|
|
}
|
|
if (co_freevars == NULL) {
|
|
freevars = get_localsplus_names(self, CO_FAST_FREE, self->co_nfreevars);
|
|
if (freevars == NULL) {
|
|
goto error;
|
|
}
|
|
co_freevars = freevars;
|
|
}
|
|
|
|
if (!Py_IsNone(co_endlinetable) && !PyBytes_Check(co_endlinetable)) {
|
|
PyErr_SetString(PyExc_ValueError,
|
|
"co_endlinetable must be None or bytes");
|
|
goto error;
|
|
}
|
|
if (!Py_IsNone(co_columntable) && !PyBytes_Check(co_columntable)) {
|
|
PyErr_SetString(PyExc_ValueError,
|
|
"co_columntable must be None or bytes");
|
|
goto error;
|
|
}
|
|
|
|
co = PyCode_NewWithPosOnlyArgs(
|
|
co_argcount, co_posonlyargcount, co_kwonlyargcount, co_nlocals,
|
|
co_stacksize, co_flags, (PyObject*)co_code, co_consts, co_names,
|
|
co_varnames, co_freevars, co_cellvars, co_filename, co_name,
|
|
co_qualname, co_firstlineno, (PyObject*)co_linetable,
|
|
(PyObject*)co_endlinetable, (PyObject*)co_columntable,
|
|
(PyObject*)co_exceptiontable);
|
|
|
|
error:
|
|
Py_XDECREF(varnames);
|
|
Py_XDECREF(cellvars);
|
|
Py_XDECREF(freevars);
|
|
return (PyObject *)co;
|
|
}
|
|
|
|
/*[clinic input]
|
|
code._varname_from_oparg
|
|
|
|
oparg: int
|
|
|
|
(internal-only) Return the local variable name for the given oparg.
|
|
|
|
WARNING: this method is for internal use only and may change or go away.
|
|
[clinic start generated code]*/
|
|
|
|
static PyObject *
|
|
code__varname_from_oparg_impl(PyCodeObject *self, int oparg)
|
|
/*[clinic end generated code: output=1fd1130413184206 input=c5fa3ee9bac7d4ca]*/
|
|
{
|
|
PyObject *name = PyTuple_GetItem(self->co_localsplusnames, oparg);
|
|
if (name == NULL) {
|
|
return NULL;
|
|
}
|
|
Py_INCREF(name);
|
|
return name;
|
|
}
|
|
|
|
/* XXX code objects need to participate in GC? */
|
|
|
|
static struct PyMethodDef code_methods[] = {
|
|
{"__sizeof__", (PyCFunction)code_sizeof, METH_NOARGS},
|
|
{"co_lines", (PyCFunction)code_linesiterator, METH_NOARGS},
|
|
{"co_positions", (PyCFunction)code_positionsiterator, METH_NOARGS},
|
|
CODE_REPLACE_METHODDEF
|
|
CODE__VARNAME_FROM_OPARG_METHODDEF
|
|
{NULL, NULL} /* sentinel */
|
|
};
|
|
|
|
|
|
PyTypeObject PyCode_Type = {
|
|
PyVarObject_HEAD_INIT(&PyType_Type, 0)
|
|
"code",
|
|
sizeof(PyCodeObject),
|
|
0,
|
|
(destructor)code_dealloc, /* tp_dealloc */
|
|
0, /* tp_vectorcall_offset */
|
|
0, /* tp_getattr */
|
|
0, /* tp_setattr */
|
|
0, /* tp_as_async */
|
|
(reprfunc)code_repr, /* tp_repr */
|
|
0, /* tp_as_number */
|
|
0, /* tp_as_sequence */
|
|
0, /* tp_as_mapping */
|
|
(hashfunc)code_hash, /* tp_hash */
|
|
0, /* tp_call */
|
|
0, /* tp_str */
|
|
PyObject_GenericGetAttr, /* tp_getattro */
|
|
0, /* tp_setattro */
|
|
0, /* tp_as_buffer */
|
|
Py_TPFLAGS_DEFAULT, /* tp_flags */
|
|
code_new__doc__, /* tp_doc */
|
|
0, /* tp_traverse */
|
|
0, /* tp_clear */
|
|
code_richcompare, /* tp_richcompare */
|
|
offsetof(PyCodeObject, co_weakreflist), /* tp_weaklistoffset */
|
|
0, /* tp_iter */
|
|
0, /* tp_iternext */
|
|
code_methods, /* tp_methods */
|
|
code_memberlist, /* tp_members */
|
|
code_getsetlist, /* tp_getset */
|
|
0, /* tp_base */
|
|
0, /* tp_dict */
|
|
0, /* tp_descr_get */
|
|
0, /* tp_descr_set */
|
|
0, /* tp_dictoffset */
|
|
0, /* tp_init */
|
|
0, /* tp_alloc */
|
|
code_new, /* tp_new */
|
|
};
|
|
|
|
|
|
/******************
|
|
* other API
|
|
******************/
|
|
|
|
PyObject*
|
|
_PyCode_ConstantKey(PyObject *op)
|
|
{
|
|
PyObject *key;
|
|
|
|
/* Py_None and Py_Ellipsis are singletons. */
|
|
if (op == Py_None || op == Py_Ellipsis
|
|
|| PyLong_CheckExact(op)
|
|
|| PyUnicode_CheckExact(op)
|
|
/* code_richcompare() uses _PyCode_ConstantKey() internally */
|
|
|| PyCode_Check(op))
|
|
{
|
|
/* Objects of these types are always different from object of other
|
|
* type and from tuples. */
|
|
Py_INCREF(op);
|
|
key = op;
|
|
}
|
|
else if (PyBool_Check(op) || PyBytes_CheckExact(op)) {
|
|
/* Make booleans different from integers 0 and 1.
|
|
* Avoid BytesWarning from comparing bytes with strings. */
|
|
key = PyTuple_Pack(2, Py_TYPE(op), op);
|
|
}
|
|
else if (PyFloat_CheckExact(op)) {
|
|
double d = PyFloat_AS_DOUBLE(op);
|
|
/* all we need is to make the tuple different in either the 0.0
|
|
* or -0.0 case from all others, just to avoid the "coercion".
|
|
*/
|
|
if (d == 0.0 && copysign(1.0, d) < 0.0)
|
|
key = PyTuple_Pack(3, Py_TYPE(op), op, Py_None);
|
|
else
|
|
key = PyTuple_Pack(2, Py_TYPE(op), op);
|
|
}
|
|
else if (PyComplex_CheckExact(op)) {
|
|
Py_complex z;
|
|
int real_negzero, imag_negzero;
|
|
/* For the complex case we must make complex(x, 0.)
|
|
different from complex(x, -0.) and complex(0., y)
|
|
different from complex(-0., y), for any x and y.
|
|
All four complex zeros must be distinguished.*/
|
|
z = PyComplex_AsCComplex(op);
|
|
real_negzero = z.real == 0.0 && copysign(1.0, z.real) < 0.0;
|
|
imag_negzero = z.imag == 0.0 && copysign(1.0, z.imag) < 0.0;
|
|
/* use True, False and None singleton as tags for the real and imag
|
|
* sign, to make tuples different */
|
|
if (real_negzero && imag_negzero) {
|
|
key = PyTuple_Pack(3, Py_TYPE(op), op, Py_True);
|
|
}
|
|
else if (imag_negzero) {
|
|
key = PyTuple_Pack(3, Py_TYPE(op), op, Py_False);
|
|
}
|
|
else if (real_negzero) {
|
|
key = PyTuple_Pack(3, Py_TYPE(op), op, Py_None);
|
|
}
|
|
else {
|
|
key = PyTuple_Pack(2, Py_TYPE(op), op);
|
|
}
|
|
}
|
|
else if (PyTuple_CheckExact(op)) {
|
|
Py_ssize_t i, len;
|
|
PyObject *tuple;
|
|
|
|
len = PyTuple_GET_SIZE(op);
|
|
tuple = PyTuple_New(len);
|
|
if (tuple == NULL)
|
|
return NULL;
|
|
|
|
for (i=0; i < len; i++) {
|
|
PyObject *item, *item_key;
|
|
|
|
item = PyTuple_GET_ITEM(op, i);
|
|
item_key = _PyCode_ConstantKey(item);
|
|
if (item_key == NULL) {
|
|
Py_DECREF(tuple);
|
|
return NULL;
|
|
}
|
|
|
|
PyTuple_SET_ITEM(tuple, i, item_key);
|
|
}
|
|
|
|
key = PyTuple_Pack(2, tuple, op);
|
|
Py_DECREF(tuple);
|
|
}
|
|
else if (PyFrozenSet_CheckExact(op)) {
|
|
Py_ssize_t pos = 0;
|
|
PyObject *item;
|
|
Py_hash_t hash;
|
|
Py_ssize_t i, len;
|
|
PyObject *tuple, *set;
|
|
|
|
len = PySet_GET_SIZE(op);
|
|
tuple = PyTuple_New(len);
|
|
if (tuple == NULL)
|
|
return NULL;
|
|
|
|
i = 0;
|
|
while (_PySet_NextEntry(op, &pos, &item, &hash)) {
|
|
PyObject *item_key;
|
|
|
|
item_key = _PyCode_ConstantKey(item);
|
|
if (item_key == NULL) {
|
|
Py_DECREF(tuple);
|
|
return NULL;
|
|
}
|
|
|
|
assert(i < len);
|
|
PyTuple_SET_ITEM(tuple, i, item_key);
|
|
i++;
|
|
}
|
|
set = PyFrozenSet_New(tuple);
|
|
Py_DECREF(tuple);
|
|
if (set == NULL)
|
|
return NULL;
|
|
|
|
key = PyTuple_Pack(2, set, op);
|
|
Py_DECREF(set);
|
|
return key;
|
|
}
|
|
else {
|
|
/* for other types, use the object identifier as a unique identifier
|
|
* to ensure that they are seen as unequal. */
|
|
PyObject *obj_id = PyLong_FromVoidPtr(op);
|
|
if (obj_id == NULL)
|
|
return NULL;
|
|
|
|
key = PyTuple_Pack(2, obj_id, op);
|
|
Py_DECREF(obj_id);
|
|
}
|
|
return key;
|
|
}
|
|
|
|
void
|
|
_PyStaticCode_Dealloc(PyCodeObject *co)
|
|
{
|
|
if (co->co_quickened) {
|
|
PyMem_Free(co->co_quickened);
|
|
co->co_quickened = NULL;
|
|
_Py_QuickenedCount--;
|
|
}
|
|
co->co_warmup = QUICKENING_INITIAL_WARMUP_VALUE;
|
|
PyMem_Free(co->co_extra);
|
|
co->co_extra = NULL;
|
|
co->co_firstinstr = (_Py_CODEUNIT *)PyBytes_AS_STRING(co->co_code);
|
|
if (co->co_weakreflist != NULL) {
|
|
PyObject_ClearWeakRefs((PyObject *)co);
|
|
co->co_weakreflist = NULL;
|
|
}
|
|
}
|
|
|
|
int
|
|
_PyStaticCode_InternStrings(PyCodeObject *co)
|
|
{
|
|
int res = intern_strings(co->co_names);
|
|
if (res < 0) {
|
|
return -1;
|
|
}
|
|
res = intern_string_constants(co->co_consts, NULL);
|
|
if (res < 0) {
|
|
return -1;
|
|
}
|
|
res = intern_strings(co->co_localsplusnames);
|
|
if (res < 0) {
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|