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1114 lines
35 KiB
1114 lines
35 KiB
#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"
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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_tupleobject.h"
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#include "clinic/codeobject.c.h"
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/* Holder for co_extra information */
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typedef struct {
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Py_ssize_t ce_size;
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void *ce_extras[1];
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} _PyCodeObjectExtra;
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/*[clinic input]
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class code "PyCodeObject *" "&PyCode_Type"
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[clinic start generated code]*/
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/*[clinic end generated code: output=da39a3ee5e6b4b0d input=78aa5d576683bb4b]*/
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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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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, int firstlineno,
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PyObject *lnotab)
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{
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PyCodeObject *co;
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Py_ssize_t *cell2arg = NULL;
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Py_ssize_t i, n_cellvars, n_varnames, total_args;
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/* Check argument types */
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if (argcount < posonlyargcount || posonlyargcount < 0 ||
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kwonlyargcount < 0 || nlocals < 0 ||
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stacksize < 0 || flags < 0 ||
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code == NULL || !PyBytes_Check(code) ||
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consts == NULL || !PyTuple_Check(consts) ||
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names == NULL || !PyTuple_Check(names) ||
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varnames == NULL || !PyTuple_Check(varnames) ||
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freevars == NULL || !PyTuple_Check(freevars) ||
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cellvars == NULL || !PyTuple_Check(cellvars) ||
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name == NULL || !PyUnicode_Check(name) ||
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filename == NULL || !PyUnicode_Check(filename) ||
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lnotab == NULL || !PyBytes_Check(lnotab)) {
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PyErr_BadInternalCall();
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return NULL;
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}
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/* Ensure that strings are ready Unicode string */
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if (PyUnicode_READY(name) < 0) {
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return NULL;
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}
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if (PyUnicode_READY(filename) < 0) {
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return NULL;
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}
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if (intern_strings(names) < 0) {
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return NULL;
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}
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if (intern_strings(varnames) < 0) {
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return NULL;
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}
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if (intern_strings(freevars) < 0) {
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return NULL;
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}
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if (intern_strings(cellvars) < 0) {
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return NULL;
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}
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if (intern_string_constants(consts, NULL) < 0) {
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return NULL;
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}
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/* Check for any inner or outer closure references */
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n_cellvars = PyTuple_GET_SIZE(cellvars);
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if (!n_cellvars && !PyTuple_GET_SIZE(freevars)) {
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flags |= CO_NOFREE;
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} else {
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flags &= ~CO_NOFREE;
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}
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n_varnames = PyTuple_GET_SIZE(varnames);
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if (argcount <= n_varnames && kwonlyargcount <= n_varnames) {
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/* Never overflows. */
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total_args = (Py_ssize_t)argcount + (Py_ssize_t)kwonlyargcount +
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((flags & CO_VARARGS) != 0) + ((flags & CO_VARKEYWORDS) != 0);
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}
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else {
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total_args = n_varnames + 1;
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}
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if (total_args > n_varnames) {
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PyErr_SetString(PyExc_ValueError, "code: varnames is too small");
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return NULL;
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}
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/* Create mapping between cells and arguments if needed. */
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if (n_cellvars) {
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bool used_cell2arg = false;
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cell2arg = PyMem_NEW(Py_ssize_t, n_cellvars);
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if (cell2arg == NULL) {
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PyErr_NoMemory();
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return NULL;
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}
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/* Find cells which are also arguments. */
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for (i = 0; i < n_cellvars; i++) {
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Py_ssize_t j;
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PyObject *cell = PyTuple_GET_ITEM(cellvars, i);
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cell2arg[i] = CO_CELL_NOT_AN_ARG;
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for (j = 0; j < total_args; j++) {
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PyObject *arg = PyTuple_GET_ITEM(varnames, j);
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int cmp = PyUnicode_Compare(cell, arg);
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if (cmp == -1 && PyErr_Occurred()) {
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PyMem_FREE(cell2arg);
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return NULL;
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}
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if (cmp == 0) {
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cell2arg[i] = j;
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used_cell2arg = true;
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break;
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}
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}
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}
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if (!used_cell2arg) {
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PyMem_FREE(cell2arg);
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cell2arg = NULL;
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}
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}
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co = PyObject_New(PyCodeObject, &PyCode_Type);
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if (co == NULL) {
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if (cell2arg)
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PyMem_FREE(cell2arg);
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return NULL;
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}
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co->co_argcount = argcount;
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co->co_posonlyargcount = posonlyargcount;
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co->co_kwonlyargcount = kwonlyargcount;
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co->co_nlocals = nlocals;
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co->co_stacksize = stacksize;
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co->co_flags = flags;
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Py_INCREF(code);
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co->co_code = code;
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Py_INCREF(consts);
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co->co_consts = consts;
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Py_INCREF(names);
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co->co_names = names;
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Py_INCREF(varnames);
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co->co_varnames = varnames;
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Py_INCREF(freevars);
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co->co_freevars = freevars;
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Py_INCREF(cellvars);
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co->co_cellvars = cellvars;
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co->co_cell2arg = cell2arg;
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Py_INCREF(filename);
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co->co_filename = filename;
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Py_INCREF(name);
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co->co_name = name;
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co->co_firstlineno = firstlineno;
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Py_INCREF(lnotab);
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co->co_lnotab = lnotab;
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co->co_zombieframe = NULL;
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co->co_weakreflist = NULL;
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co->co_extra = NULL;
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co->co_opcache_map = NULL;
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co->co_opcache = NULL;
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co->co_opcache_flag = 0;
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co->co_opcache_size = 0;
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return co;
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}
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PyCodeObject *
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PyCode_New(int argcount, 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, int firstlineno,
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PyObject *lnotab)
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{
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return PyCode_NewWithPosOnlyArgs(argcount, 0, kwonlyargcount, nlocals,
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stacksize, flags, code, consts, names,
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varnames, freevars, cellvars, filename,
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name, firstlineno, lnotab);
|
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}
|
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int
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_PyCode_InitOpcache(PyCodeObject *co)
|
|
{
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Py_ssize_t co_size = PyBytes_Size(co->co_code) / sizeof(_Py_CODEUNIT);
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co->co_opcache_map = (unsigned char *)PyMem_Calloc(co_size, 1);
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if (co->co_opcache_map == NULL) {
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return -1;
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}
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_Py_CODEUNIT *opcodes = (_Py_CODEUNIT*)PyBytes_AS_STRING(co->co_code);
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Py_ssize_t opts = 0;
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for (Py_ssize_t i = 0; i < co_size;) {
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unsigned char opcode = _Py_OPCODE(opcodes[i]);
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i++; // 'i' is now aligned to (next_instr - first_instr)
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|
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// TODO: LOAD_METHOD, LOAD_ATTR
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if (opcode == LOAD_GLOBAL) {
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opts++;
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co->co_opcache_map[i] = (unsigned char)opts;
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if (opts > 254) {
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break;
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}
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}
|
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}
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|
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if (opts) {
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co->co_opcache = (_PyOpcache *)PyMem_Calloc(opts, sizeof(_PyOpcache));
|
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if (co->co_opcache == NULL) {
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PyMem_FREE(co->co_opcache_map);
|
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return -1;
|
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}
|
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}
|
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else {
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PyMem_FREE(co->co_opcache_map);
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co->co_opcache_map = NULL;
|
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co->co_opcache = NULL;
|
|
}
|
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|
|
co->co_opcache_size = (unsigned char)opts;
|
|
return 0;
|
|
}
|
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|
|
PyCodeObject *
|
|
PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno)
|
|
{
|
|
static PyObject *emptystring = NULL;
|
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static PyObject *nulltuple = NULL;
|
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PyObject *filename_ob = NULL;
|
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PyObject *funcname_ob = NULL;
|
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PyCodeObject *result = NULL;
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if (emptystring == NULL) {
|
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emptystring = PyBytes_FromString("");
|
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if (emptystring == NULL)
|
|
goto failed;
|
|
}
|
|
if (nulltuple == NULL) {
|
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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;
|
|
|
|
result = PyCode_NewWithPosOnlyArgs(
|
|
0, /* argcount */
|
|
0, /* posonlyargcount */
|
|
0, /* kwonlyargcount */
|
|
0, /* nlocals */
|
|
0, /* stacksize */
|
|
0, /* flags */
|
|
emptystring, /* code */
|
|
nulltuple, /* consts */
|
|
nulltuple, /* names */
|
|
nulltuple, /* varnames */
|
|
nulltuple, /* freevars */
|
|
nulltuple, /* cellvars */
|
|
filename_ob, /* filename */
|
|
funcname_ob, /* name */
|
|
firstlineno, /* firstlineno */
|
|
emptystring /* lnotab */
|
|
);
|
|
|
|
failed:
|
|
Py_XDECREF(funcname_ob);
|
|
Py_XDECREF(filename_ob);
|
|
return result;
|
|
}
|
|
|
|
#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_nlocals", T_INT, OFF(co_nlocals), 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_varnames", T_OBJECT, OFF(co_varnames), READONLY},
|
|
{"co_freevars", T_OBJECT, OFF(co_freevars), READONLY},
|
|
{"co_cellvars", T_OBJECT, OFF(co_cellvars), READONLY},
|
|
{"co_filename", T_OBJECT, OFF(co_filename), READONLY},
|
|
{"co_name", T_OBJECT, OFF(co_name), READONLY},
|
|
{"co_firstlineno", T_INT, OFF(co_firstlineno), READONLY},
|
|
{"co_lnotab", T_OBJECT, OFF(co_lnotab), READONLY},
|
|
{NULL} /* Sentinel */
|
|
};
|
|
|
|
/* Helper for code_new: return a shallow copy of a tuple that is
|
|
guaranteed to contain exact strings, by converting string subclasses
|
|
to exact strings and complaining if a non-string is found. */
|
|
static PyObject*
|
|
validate_and_copy_tuple(PyObject *tup)
|
|
{
|
|
PyObject *newtuple;
|
|
PyObject *item;
|
|
Py_ssize_t i, len;
|
|
|
|
len = PyTuple_GET_SIZE(tup);
|
|
newtuple = PyTuple_New(len);
|
|
if (newtuple == NULL)
|
|
return NULL;
|
|
|
|
for (i = 0; i < len; i++) {
|
|
item = PyTuple_GET_ITEM(tup, i);
|
|
if (PyUnicode_CheckExact(item)) {
|
|
Py_INCREF(item);
|
|
}
|
|
else if (!PyUnicode_Check(item)) {
|
|
PyErr_Format(
|
|
PyExc_TypeError,
|
|
"name tuples must contain only "
|
|
"strings, not '%.500s'",
|
|
Py_TYPE(item)->tp_name);
|
|
Py_DECREF(newtuple);
|
|
return NULL;
|
|
}
|
|
else {
|
|
item = _PyUnicode_Copy(item);
|
|
if (item == NULL) {
|
|
Py_DECREF(newtuple);
|
|
return NULL;
|
|
}
|
|
}
|
|
PyTuple_SET_ITEM(newtuple, i, item);
|
|
}
|
|
|
|
return newtuple;
|
|
}
|
|
|
|
PyDoc_STRVAR(code_doc,
|
|
"code(argcount, posonlyargcount, kwonlyargcount, nlocals, stacksize,\n\
|
|
flags, codestring, constants, names, varnames, filename, name,\n\
|
|
firstlineno, lnotab[, freevars[, cellvars]])\n\
|
|
\n\
|
|
Create a code object. Not for the faint of heart.");
|
|
|
|
static PyObject *
|
|
code_new(PyTypeObject *type, PyObject *args, PyObject *kw)
|
|
{
|
|
int argcount;
|
|
int posonlyargcount;
|
|
int kwonlyargcount;
|
|
int nlocals;
|
|
int stacksize;
|
|
int flags;
|
|
PyObject *co = NULL;
|
|
PyObject *code;
|
|
PyObject *consts;
|
|
PyObject *names, *ournames = NULL;
|
|
PyObject *varnames, *ourvarnames = NULL;
|
|
PyObject *freevars = NULL, *ourfreevars = NULL;
|
|
PyObject *cellvars = NULL, *ourcellvars = NULL;
|
|
PyObject *filename;
|
|
PyObject *name;
|
|
int firstlineno;
|
|
PyObject *lnotab;
|
|
|
|
if (!PyArg_ParseTuple(args, "iiiiiiSO!O!O!UUiS|O!O!:code",
|
|
&argcount, &posonlyargcount, &kwonlyargcount,
|
|
&nlocals, &stacksize, &flags,
|
|
&code,
|
|
&PyTuple_Type, &consts,
|
|
&PyTuple_Type, &names,
|
|
&PyTuple_Type, &varnames,
|
|
&filename, &name,
|
|
&firstlineno, &lnotab,
|
|
&PyTuple_Type, &freevars,
|
|
&PyTuple_Type, &cellvars))
|
|
return 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;
|
|
}
|
|
|
|
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, firstlineno, lnotab);
|
|
cleanup:
|
|
Py_XDECREF(ournames);
|
|
Py_XDECREF(ourvarnames);
|
|
Py_XDECREF(ourfreevars);
|
|
Py_XDECREF(ourcellvars);
|
|
return co;
|
|
}
|
|
|
|
static void
|
|
code_dealloc(PyCodeObject *co)
|
|
{
|
|
if (co->co_opcache != NULL) {
|
|
PyMem_FREE(co->co_opcache);
|
|
}
|
|
if (co->co_opcache_map != NULL) {
|
|
PyMem_FREE(co->co_opcache_map);
|
|
}
|
|
co->co_opcache_flag = 0;
|
|
co->co_opcache_size = 0;
|
|
|
|
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_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_lnotab);
|
|
if (co->co_cell2arg != NULL)
|
|
PyMem_FREE(co->co_cell2arg);
|
|
if (co->co_zombieframe != NULL)
|
|
PyObject_GC_Del(co->co_zombieframe);
|
|
if (co->co_weakreflist != NULL)
|
|
PyObject_ClearWeakRefs((PyObject*)co);
|
|
PyObject_DEL(co);
|
|
}
|
|
|
|
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->co_cell2arg != NULL && co->co_cellvars != NULL) {
|
|
res += PyTuple_GET_SIZE(co->co_cellvars) * sizeof(Py_ssize_t);
|
|
}
|
|
if (co_extra != NULL) {
|
|
res += sizeof(_PyCodeObjectExtra) +
|
|
(co_extra->ce_size-1) * sizeof(co_extra->ce_extras[0]);
|
|
}
|
|
if (co->co_opcache != NULL) {
|
|
assert(co->co_opcache_map != NULL);
|
|
// co_opcache_map
|
|
res += PyBytes_GET_SIZE(co->co_code) / sizeof(_Py_CODEUNIT);
|
|
// co_opcache
|
|
res += co->co_opcache_size * sizeof(_PyOpcache);
|
|
}
|
|
return PyLong_FromSsize_t(res);
|
|
}
|
|
|
|
/*[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_lnotab: PyBytesObject(c_default="(PyBytesObject *)self->co_lnotab") = 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, PyBytesObject *co_lnotab)
|
|
/*[clinic end generated code: output=25c8e303913bcace input=d9051bc8f24e6b28]*/
|
|
{
|
|
#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;
|
|
}
|
|
|
|
return (PyObject *)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_firstlineno, (PyObject*)co_lnotab);
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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_nlocals == cp->co_nlocals;
|
|
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_varnames, cp->co_varnames, Py_EQ);
|
|
if (eq <= 0) goto unequal;
|
|
eq = PyObject_RichCompareBool(co->co_freevars, cp->co_freevars, Py_EQ);
|
|
if (eq <= 0) goto unequal;
|
|
eq = PyObject_RichCompareBool(co->co_cellvars, cp->co_cellvars, 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, h5, h6;
|
|
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_varnames);
|
|
if (h4 == -1) return -1;
|
|
h5 = PyObject_Hash(co->co_freevars);
|
|
if (h5 == -1) return -1;
|
|
h6 = PyObject_Hash(co->co_cellvars);
|
|
if (h6 == -1) return -1;
|
|
h = h0 ^ h1 ^ h2 ^ h3 ^ h4 ^ h5 ^ h6 ^
|
|
co->co_argcount ^ co->co_posonlyargcount ^ co->co_kwonlyargcount ^
|
|
co->co_nlocals ^ co->co_flags;
|
|
if (h == -1) h = -2;
|
|
return h;
|
|
}
|
|
|
|
/* XXX code objects need to participate in GC? */
|
|
|
|
static struct PyMethodDef code_methods[] = {
|
|
{"__sizeof__", (PyCFunction)code_sizeof, METH_NOARGS},
|
|
CODE_REPLACE_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_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 */
|
|
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 */
|
|
code_new, /* tp_new */
|
|
};
|
|
|
|
/* Use co_lnotab 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)
|
|
{
|
|
Py_ssize_t size = PyBytes_Size(co->co_lnotab) / 2;
|
|
unsigned char *p = (unsigned char*)PyBytes_AsString(co->co_lnotab);
|
|
int line = co->co_firstlineno;
|
|
int addr = 0;
|
|
while (--size >= 0) {
|
|
addr += *p++;
|
|
if (addr > addrq)
|
|
break;
|
|
line += (signed char)*p;
|
|
p++;
|
|
}
|
|
return 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. */
|
|
int
|
|
_PyCode_CheckLineNumber(PyCodeObject* co, int lasti, PyAddrPair *bounds)
|
|
{
|
|
Py_ssize_t size;
|
|
int addr, line;
|
|
unsigned char* p;
|
|
|
|
p = (unsigned char*)PyBytes_AS_STRING(co->co_lnotab);
|
|
size = PyBytes_GET_SIZE(co->co_lnotab) / 2;
|
|
|
|
addr = 0;
|
|
line = co->co_firstlineno;
|
|
assert(line > 0);
|
|
|
|
/* possible optimization: if f->f_lasti == instr_ub
|
|
(likely to be a common case) then we already know
|
|
instr_lb -- if we stored the matching value of p
|
|
somewhere we could skip the first while loop. */
|
|
|
|
/* See lnotab_notes.txt for the description of
|
|
co_lnotab. A point to remember: increments to p
|
|
come in (addr, line) pairs. */
|
|
|
|
bounds->ap_lower = 0;
|
|
while (size > 0) {
|
|
if (addr + *p > lasti)
|
|
break;
|
|
addr += *p++;
|
|
if ((signed char)*p)
|
|
bounds->ap_lower = addr;
|
|
line += (signed char)*p;
|
|
p++;
|
|
--size;
|
|
}
|
|
|
|
if (size > 0) {
|
|
while (--size >= 0) {
|
|
addr += *p++;
|
|
if ((signed char)*p)
|
|
break;
|
|
p++;
|
|
}
|
|
bounds->ap_upper = addr;
|
|
}
|
|
else {
|
|
bounds->ap_upper = INT_MAX;
|
|
}
|
|
|
|
return line;
|
|
}
|
|
|
|
|
|
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;
|
|
}
|