mirror of
https://github.com/python/cpython.git
synced 2024-12-12 19:33:52 +08:00
2395 lines
53 KiB
C
2395 lines
53 KiB
C
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/* Built-in functions */
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#include "Python.h"
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#include "node.h"
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#include "compile.h"
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#include "eval.h"
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#include <ctype.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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/* Forward */
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static PyObject *filterstring(PyObject *, PyObject *);
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static PyObject *filtertuple (PyObject *, PyObject *);
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static PyObject *
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builtin___import__(PyObject *self, PyObject *args)
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{
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char *name;
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PyObject *globals = NULL;
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PyObject *locals = NULL;
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PyObject *fromlist = NULL;
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if (!PyArg_ParseTuple(args, "s|OOO:__import__",
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&name, &globals, &locals, &fromlist))
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return NULL;
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return PyImport_ImportModuleEx(name, globals, locals, fromlist);
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}
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static char import_doc[] =
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"__import__(name, globals, locals, fromlist) -> module\n\
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\n\
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Import a module. The globals are only used to determine the context;\n\
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they are not modified. The locals are currently unused. The fromlist\n\
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should be a list of names to emulate ``from name import ...'', or an\n\
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empty list to emulate ``import name''.\n\
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When importing a module from a package, note that __import__('A.B', ...)\n\
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returns package A when fromlist is empty, but its submodule B when\n\
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fromlist is not empty.";
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static PyObject *
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builtin_abs(PyObject *self, PyObject *args)
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{
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PyObject *v;
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if (!PyArg_ParseTuple(args, "O:abs", &v))
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return NULL;
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return PyNumber_Absolute(v);
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}
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static char abs_doc[] =
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"abs(number) -> number\n\
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\n\
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Return the absolute value of the argument.";
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static PyObject *
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builtin_apply(PyObject *self, PyObject *args)
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{
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PyObject *func, *alist = NULL, *kwdict = NULL;
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PyObject *t = NULL, *retval = NULL;
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if (!PyArg_ParseTuple(args, "O|OO:apply", &func, &alist, &kwdict))
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return NULL;
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if (alist != NULL) {
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if (!PyTuple_Check(alist)) {
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if (!PySequence_Check(alist)) {
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PyErr_Format(PyExc_TypeError,
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"apply() arg 2 expect sequence, found %s",
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alist->ob_type->tp_name);
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return NULL;
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}
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t = PySequence_Tuple(alist);
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if (t == NULL)
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return NULL;
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alist = t;
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}
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}
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if (kwdict != NULL && !PyDict_Check(kwdict)) {
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PyErr_Format(PyExc_TypeError,
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"apply() arg 3 expected dictionary, found %s",
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kwdict->ob_type->tp_name);
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goto finally;
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}
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retval = PyEval_CallObjectWithKeywords(func, alist, kwdict);
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finally:
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Py_XDECREF(t);
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return retval;
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}
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static char apply_doc[] =
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"apply(object[, args[, kwargs]]) -> value\n\
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\n\
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Call a callable object with positional arguments taken from the tuple args,\n\
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and keyword arguments taken from the optional dictionary kwargs.\n\
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Note that classes are callable, as are instances with a __call__() method.";
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static PyObject *
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builtin_buffer(PyObject *self, PyObject *args)
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{
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PyObject *ob;
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int offset = 0;
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int size = Py_END_OF_BUFFER;
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if ( !PyArg_ParseTuple(args, "O|ii:buffer", &ob, &offset, &size) )
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return NULL;
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return PyBuffer_FromObject(ob, offset, size);
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}
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static char buffer_doc[] =
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"buffer(object [, offset[, size]]) -> object\n\
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\n\
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Create a new buffer object which references the given object.\n\
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The buffer will reference a slice of the target object from the\n\
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start of the object (or at the specified offset). The slice will\n\
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extend to the end of the target object (or with the specified size).";
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static PyObject *
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builtin_unicode(PyObject *self, PyObject *args)
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{
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PyObject *v;
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char *encoding = NULL;
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char *errors = NULL;
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if ( !PyArg_ParseTuple(args, "O|ss:unicode", &v, &encoding, &errors) )
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return NULL;
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return PyUnicode_FromEncodedObject(v, encoding, errors);
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}
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static char unicode_doc[] =
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"unicode(string [, encoding[, errors]]) -> object\n\
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\n\
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Create a new Unicode object from the given encoded string.\n\
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encoding defaults to the current default string encoding and \n\
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errors, defining the error handling, to 'strict'.";
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static PyObject *
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builtin_callable(PyObject *self, PyObject *args)
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{
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PyObject *v;
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if (!PyArg_ParseTuple(args, "O:callable", &v))
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return NULL;
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return PyInt_FromLong((long)PyCallable_Check(v));
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}
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static char callable_doc[] =
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"callable(object) -> Boolean\n\
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\n\
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Return whether the object is callable (i.e., some kind of function).\n\
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Note that classes are callable, as are instances with a __call__() method.";
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static PyObject *
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builtin_filter(PyObject *self, PyObject *args)
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{
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PyObject *func, *seq, *result;
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PySequenceMethods *sqf;
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int len;
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register int i, j;
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if (!PyArg_ParseTuple(args, "OO:filter", &func, &seq))
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return NULL;
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if (PyString_Check(seq)) {
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PyObject *r = filterstring(func, seq);
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return r;
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}
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if (PyTuple_Check(seq)) {
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PyObject *r = filtertuple(func, seq);
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return r;
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}
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sqf = seq->ob_type->tp_as_sequence;
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if (sqf == NULL || sqf->sq_length == NULL || sqf->sq_item == NULL) {
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PyErr_SetString(PyExc_TypeError,
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"filter() arg 2 must be a sequence");
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goto Fail_2;
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}
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if ((len = (*sqf->sq_length)(seq)) < 0)
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goto Fail_2;
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if (PyList_Check(seq) && seq->ob_refcnt == 1) {
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Py_INCREF(seq);
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result = seq;
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}
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else {
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if ((result = PyList_New(len)) == NULL)
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goto Fail_2;
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}
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for (i = j = 0; ; ++i) {
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PyObject *item, *good;
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int ok;
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if ((item = (*sqf->sq_item)(seq, i)) == NULL) {
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if (PyErr_ExceptionMatches(PyExc_IndexError)) {
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PyErr_Clear();
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break;
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}
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goto Fail_1;
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}
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if (func == Py_None) {
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good = item;
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Py_INCREF(good);
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}
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else {
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PyObject *arg = Py_BuildValue("(O)", item);
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if (arg == NULL)
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goto Fail_1;
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good = PyEval_CallObject(func, arg);
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Py_DECREF(arg);
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if (good == NULL) {
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Py_DECREF(item);
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goto Fail_1;
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}
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}
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ok = PyObject_IsTrue(good);
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Py_DECREF(good);
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if (ok) {
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if (j < len) {
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if (PyList_SetItem(result, j++, item) < 0)
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goto Fail_1;
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}
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else {
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int status = PyList_Append(result, item);
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j++;
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Py_DECREF(item);
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if (status < 0)
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goto Fail_1;
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}
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} else {
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Py_DECREF(item);
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}
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}
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if (j < len && PyList_SetSlice(result, j, len, NULL) < 0)
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goto Fail_1;
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return result;
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Fail_1:
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Py_DECREF(result);
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Fail_2:
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return NULL;
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}
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static char filter_doc[] =
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"filter(function, sequence) -> list\n\
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\n\
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Return a list containing those items of sequence for which function(item)\n\
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is true. If function is None, return a list of items that are true.";
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static PyObject *
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builtin_chr(PyObject *self, PyObject *args)
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{
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long x;
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char s[1];
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if (!PyArg_ParseTuple(args, "l:chr", &x))
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return NULL;
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if (x < 0 || x >= 256) {
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PyErr_SetString(PyExc_ValueError,
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"chr() arg not in range(256)");
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return NULL;
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}
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s[0] = (char)x;
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return PyString_FromStringAndSize(s, 1);
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}
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static char chr_doc[] =
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"chr(i) -> character\n\
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\n\
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Return a string of one character with ordinal i; 0 <= i < 256.";
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static PyObject *
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builtin_unichr(PyObject *self, PyObject *args)
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{
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long x;
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Py_UNICODE s[1];
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if (!PyArg_ParseTuple(args, "l:unichr", &x))
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return NULL;
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if (x < 0 || x >= 65536) {
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PyErr_SetString(PyExc_ValueError,
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"unichr() arg not in range(65536)");
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return NULL;
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}
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s[0] = (Py_UNICODE)x;
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return PyUnicode_FromUnicode(s, 1);
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}
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static char unichr_doc[] =
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"unichr(i) -> Unicode character\n\
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\n\
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Return a Unicode string of one character with ordinal i; 0 <= i < 65536.";
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static PyObject *
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builtin_cmp(PyObject *self, PyObject *args)
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{
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PyObject *a, *b;
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int c;
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if (!PyArg_ParseTuple(args, "OO:cmp", &a, &b))
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return NULL;
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if (PyObject_Cmp(a, b, &c) < 0)
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return NULL;
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return PyInt_FromLong((long)c);
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}
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static char cmp_doc[] =
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"cmp(x, y) -> integer\n\
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\n\
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Return negative if x<y, zero if x==y, positive if x>y.";
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static PyObject *
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builtin_coerce(PyObject *self, PyObject *args)
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{
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PyObject *v, *w;
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PyObject *res;
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if (!PyArg_ParseTuple(args, "OO:coerce", &v, &w))
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return NULL;
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if (PyNumber_Coerce(&v, &w) < 0)
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return NULL;
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res = Py_BuildValue("(OO)", v, w);
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Py_DECREF(v);
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Py_DECREF(w);
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return res;
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}
|
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static char coerce_doc[] =
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"coerce(x, y) -> None or (x1, y1)\n\
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\n\
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When x and y can be coerced to values of the same type, return a tuple\n\
|
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containing the coerced values. When they can't be coerced, return None.";
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static PyObject *
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builtin_compile(PyObject *self, PyObject *args)
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{
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char *str;
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char *filename;
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char *startstr;
|
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int start;
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if (!PyArg_ParseTuple(args, "sss:compile", &str, &filename, &startstr))
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return NULL;
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if (strcmp(startstr, "exec") == 0)
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start = Py_file_input;
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else if (strcmp(startstr, "eval") == 0)
|
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start = Py_eval_input;
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else if (strcmp(startstr, "single") == 0)
|
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start = Py_single_input;
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else {
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PyErr_SetString(PyExc_ValueError,
|
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"compile() arg 3 must be 'exec' or 'eval' or 'single'");
|
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return NULL;
|
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}
|
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return Py_CompileString(str, filename, start);
|
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}
|
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|
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static char compile_doc[] =
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"compile(source, filename, mode) -> code object\n\
|
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\n\
|
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Compile the source string (a Python module, statement or expression)\n\
|
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into a code object that can be executed by the exec statement or eval().\n\
|
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The filename will be used for run-time error messages.\n\
|
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The mode must be 'exec' to compile a module, 'single' to compile a\n\
|
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single (interactive) statement, or 'eval' to compile an expression.";
|
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|
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|
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#ifndef WITHOUT_COMPLEX
|
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|
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static PyObject *
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complex_from_string(PyObject *v)
|
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{
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extern double strtod(const char *, char **);
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const char *s, *start;
|
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char *end;
|
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double x=0.0, y=0.0, z;
|
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int got_re=0, got_im=0, done=0;
|
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int digit_or_dot;
|
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int sw_error=0;
|
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int sign;
|
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char buffer[256]; /* For errors */
|
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char s_buffer[256];
|
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int len;
|
|
|
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if (PyString_Check(v)) {
|
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s = PyString_AS_STRING(v);
|
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len = PyString_GET_SIZE(v);
|
|
}
|
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else if (PyUnicode_Check(v)) {
|
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if (PyUnicode_GET_SIZE(v) >= sizeof(s_buffer)) {
|
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PyErr_SetString(PyExc_ValueError,
|
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"complex() literal too large to convert");
|
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return NULL;
|
|
}
|
|
if (PyUnicode_EncodeDecimal(PyUnicode_AS_UNICODE(v),
|
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PyUnicode_GET_SIZE(v),
|
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s_buffer,
|
|
NULL))
|
|
return NULL;
|
|
s = s_buffer;
|
|
len = (int)strlen(s);
|
|
}
|
|
else if (PyObject_AsCharBuffer(v, &s, &len)) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"complex() arg is not a string");
|
|
return NULL;
|
|
}
|
|
|
|
/* position on first nonblank */
|
|
start = s;
|
|
while (*s && isspace(Py_CHARMASK(*s)))
|
|
s++;
|
|
if (s[0] == '\0') {
|
|
PyErr_SetString(PyExc_ValueError,
|
|
"complex() arg is an empty string");
|
|
return NULL;
|
|
}
|
|
|
|
z = -1.0;
|
|
sign = 1;
|
|
do {
|
|
|
|
switch (*s) {
|
|
|
|
case '\0':
|
|
if (s-start != len) {
|
|
PyErr_SetString(
|
|
PyExc_ValueError,
|
|
"complex() arg contains a null byte");
|
|
return NULL;
|
|
}
|
|
if(!done) sw_error=1;
|
|
break;
|
|
|
|
case '-':
|
|
sign = -1;
|
|
/* Fallthrough */
|
|
case '+':
|
|
if (done) sw_error=1;
|
|
s++;
|
|
if ( *s=='\0'||*s=='+'||*s=='-' ||
|
|
isspace(Py_CHARMASK(*s)) ) sw_error=1;
|
|
break;
|
|
|
|
case 'J':
|
|
case 'j':
|
|
if (got_im || done) {
|
|
sw_error = 1;
|
|
break;
|
|
}
|
|
if (z<0.0) {
|
|
y=sign;
|
|
}
|
|
else{
|
|
y=sign*z;
|
|
}
|
|
got_im=1;
|
|
s++;
|
|
if (*s!='+' && *s!='-' )
|
|
done=1;
|
|
break;
|
|
|
|
default:
|
|
if (isspace(Py_CHARMASK(*s))) {
|
|
while (*s && isspace(Py_CHARMASK(*s)))
|
|
s++;
|
|
if (s[0] != '\0')
|
|
sw_error=1;
|
|
else
|
|
done = 1;
|
|
break;
|
|
}
|
|
digit_or_dot =
|
|
(*s=='.' || isdigit(Py_CHARMASK(*s)));
|
|
if (done||!digit_or_dot) {
|
|
sw_error=1;
|
|
break;
|
|
}
|
|
errno = 0;
|
|
PyFPE_START_PROTECT("strtod", return 0)
|
|
z = strtod(s, &end) ;
|
|
PyFPE_END_PROTECT(z)
|
|
if (errno != 0) {
|
|
sprintf(buffer,
|
|
"float() out of range: %.150s", s);
|
|
PyErr_SetString(
|
|
PyExc_ValueError,
|
|
buffer);
|
|
return NULL;
|
|
}
|
|
s=end;
|
|
if (*s=='J' || *s=='j') {
|
|
|
|
break;
|
|
}
|
|
if (got_re) {
|
|
sw_error=1;
|
|
break;
|
|
}
|
|
|
|
/* accept a real part */
|
|
x=sign*z;
|
|
got_re=1;
|
|
if (got_im) done=1;
|
|
z = -1.0;
|
|
sign = 1;
|
|
break;
|
|
|
|
} /* end of switch */
|
|
|
|
} while (*s!='\0' && !sw_error);
|
|
|
|
if (sw_error) {
|
|
PyErr_SetString(PyExc_ValueError,
|
|
"complex() arg is a malformed string");
|
|
return NULL;
|
|
}
|
|
|
|
return PyComplex_FromDoubles(x,y);
|
|
}
|
|
|
|
static PyObject *
|
|
builtin_complex(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *r, *i, *tmp;
|
|
PyNumberMethods *nbr, *nbi = NULL;
|
|
Py_complex cr, ci;
|
|
int own_r = 0;
|
|
|
|
i = NULL;
|
|
if (!PyArg_ParseTuple(args, "O|O:complex", &r, &i))
|
|
return NULL;
|
|
if (PyString_Check(r) || PyUnicode_Check(r))
|
|
return complex_from_string(r);
|
|
if ((nbr = r->ob_type->tp_as_number) == NULL ||
|
|
nbr->nb_float == NULL ||
|
|
(i != NULL &&
|
|
((nbi = i->ob_type->tp_as_number) == NULL ||
|
|
nbi->nb_float == NULL))) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"complex() arg can't be converted to complex");
|
|
return NULL;
|
|
}
|
|
/* XXX Hack to support classes with __complex__ method */
|
|
if (PyInstance_Check(r)) {
|
|
static PyObject *complexstr;
|
|
PyObject *f;
|
|
if (complexstr == NULL) {
|
|
complexstr = PyString_InternFromString("__complex__");
|
|
if (complexstr == NULL)
|
|
return NULL;
|
|
}
|
|
f = PyObject_GetAttr(r, complexstr);
|
|
if (f == NULL)
|
|
PyErr_Clear();
|
|
else {
|
|
PyObject *args = Py_BuildValue("()");
|
|
if (args == NULL)
|
|
return NULL;
|
|
r = PyEval_CallObject(f, args);
|
|
Py_DECREF(args);
|
|
Py_DECREF(f);
|
|
if (r == NULL)
|
|
return NULL;
|
|
own_r = 1;
|
|
}
|
|
}
|
|
if (PyComplex_Check(r)) {
|
|
cr = ((PyComplexObject*)r)->cval;
|
|
if (own_r) {
|
|
Py_DECREF(r);
|
|
}
|
|
}
|
|
else {
|
|
tmp = PyNumber_Float(r);
|
|
if (own_r) {
|
|
Py_DECREF(r);
|
|
}
|
|
if (tmp == NULL)
|
|
return NULL;
|
|
if (!PyFloat_Check(tmp)) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"float(r) didn't return a float");
|
|
Py_DECREF(tmp);
|
|
return NULL;
|
|
}
|
|
cr.real = PyFloat_AsDouble(tmp);
|
|
Py_DECREF(tmp);
|
|
cr.imag = 0.0;
|
|
}
|
|
if (i == NULL) {
|
|
ci.real = 0.0;
|
|
ci.imag = 0.0;
|
|
}
|
|
else if (PyComplex_Check(i))
|
|
ci = ((PyComplexObject*)i)->cval;
|
|
else {
|
|
tmp = (*nbi->nb_float)(i);
|
|
if (tmp == NULL)
|
|
return NULL;
|
|
ci.real = PyFloat_AsDouble(tmp);
|
|
Py_DECREF(tmp);
|
|
ci.imag = 0.;
|
|
}
|
|
cr.real -= ci.imag;
|
|
cr.imag += ci.real;
|
|
return PyComplex_FromCComplex(cr);
|
|
}
|
|
|
|
static char complex_doc[] =
|
|
"complex(real[, imag]) -> complex number\n\
|
|
\n\
|
|
Create a complex number from a real part and an optional imaginary part.\n\
|
|
This is equivalent to (real + imag*1j) where imag defaults to 0.";
|
|
|
|
|
|
#endif
|
|
|
|
static PyObject *
|
|
builtin_dir(PyObject *self, PyObject *args)
|
|
{
|
|
static char *attrlist[] = {"__members__", "__methods__", NULL};
|
|
PyObject *v = NULL, *l = NULL, *m = NULL;
|
|
PyObject *d, *x;
|
|
int i;
|
|
char **s;
|
|
|
|
if (!PyArg_ParseTuple(args, "|O:dir", &v))
|
|
return NULL;
|
|
if (v == NULL) {
|
|
x = PyEval_GetLocals();
|
|
if (x == NULL)
|
|
goto error;
|
|
l = PyMapping_Keys(x);
|
|
if (l == NULL)
|
|
goto error;
|
|
}
|
|
else {
|
|
d = PyObject_GetAttrString(v, "__dict__");
|
|
if (d == NULL)
|
|
PyErr_Clear();
|
|
else {
|
|
l = PyMapping_Keys(d);
|
|
if (l == NULL)
|
|
PyErr_Clear();
|
|
Py_DECREF(d);
|
|
}
|
|
if (l == NULL) {
|
|
l = PyList_New(0);
|
|
if (l == NULL)
|
|
goto error;
|
|
}
|
|
for (s = attrlist; *s != NULL; s++) {
|
|
m = PyObject_GetAttrString(v, *s);
|
|
if (m == NULL) {
|
|
PyErr_Clear();
|
|
continue;
|
|
}
|
|
for (i = 0; ; i++) {
|
|
x = PySequence_GetItem(m, i);
|
|
if (x == NULL) {
|
|
PyErr_Clear();
|
|
break;
|
|
}
|
|
if (PyList_Append(l, x) != 0) {
|
|
Py_DECREF(x);
|
|
Py_DECREF(m);
|
|
goto error;
|
|
}
|
|
Py_DECREF(x);
|
|
}
|
|
Py_DECREF(m);
|
|
}
|
|
}
|
|
if (PyList_Sort(l) != 0)
|
|
goto error;
|
|
return l;
|
|
error:
|
|
Py_XDECREF(l);
|
|
return NULL;
|
|
}
|
|
|
|
static char dir_doc[] =
|
|
"dir([object]) -> list of strings\n\
|
|
\n\
|
|
Return an alphabetized list of names comprising (some of) the attributes\n\
|
|
of the given object. Without an argument, the names in the current scope\n\
|
|
are listed. With an instance argument, only the instance attributes are\n\
|
|
returned. With a class argument, attributes of the base class are not\n\
|
|
returned. For other types or arguments, this may list members or methods.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_divmod(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v, *w;
|
|
|
|
if (!PyArg_ParseTuple(args, "OO:divmod", &v, &w))
|
|
return NULL;
|
|
return PyNumber_Divmod(v, w);
|
|
}
|
|
|
|
static char divmod_doc[] =
|
|
"divmod(x, y) -> (div, mod)\n\
|
|
\n\
|
|
Return the tuple ((x-x%y)/y, x%y). Invariant: div*y + mod == x.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_eval(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *cmd;
|
|
PyObject *globals = Py_None, *locals = Py_None;
|
|
char *str;
|
|
|
|
if (!PyArg_ParseTuple(args, "O|O!O!:eval",
|
|
&cmd,
|
|
&PyDict_Type, &globals,
|
|
&PyDict_Type, &locals))
|
|
return NULL;
|
|
if (globals == Py_None) {
|
|
globals = PyEval_GetGlobals();
|
|
if (locals == Py_None)
|
|
locals = PyEval_GetLocals();
|
|
}
|
|
else if (locals == Py_None)
|
|
locals = globals;
|
|
if (PyDict_GetItemString(globals, "__builtins__") == NULL) {
|
|
if (PyDict_SetItemString(globals, "__builtins__",
|
|
PyEval_GetBuiltins()) != 0)
|
|
return NULL;
|
|
}
|
|
if (PyCode_Check(cmd))
|
|
return PyEval_EvalCode((PyCodeObject *) cmd, globals, locals);
|
|
if (!PyString_Check(cmd) &&
|
|
!PyUnicode_Check(cmd)) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"eval() arg 1 must be a string or code object");
|
|
return NULL;
|
|
}
|
|
if (PyString_AsStringAndSize(cmd, &str, NULL))
|
|
return NULL;
|
|
while (*str == ' ' || *str == '\t')
|
|
str++;
|
|
return PyRun_String(str, Py_eval_input, globals, locals);
|
|
}
|
|
|
|
static char eval_doc[] =
|
|
"eval(source[, globals[, locals]]) -> value\n\
|
|
\n\
|
|
Evaluate the source in the context of globals and locals.\n\
|
|
The source may be a string representing a Python expression\n\
|
|
or a code object as returned by compile().\n\
|
|
The globals and locals are dictionaries, defaulting to the current\n\
|
|
globals and locals. If only globals is given, locals defaults to it.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_execfile(PyObject *self, PyObject *args)
|
|
{
|
|
char *filename;
|
|
PyObject *globals = Py_None, *locals = Py_None;
|
|
PyObject *res;
|
|
FILE* fp;
|
|
|
|
if (!PyArg_ParseTuple(args, "s|O!O!:execfile",
|
|
&filename,
|
|
&PyDict_Type, &globals,
|
|
&PyDict_Type, &locals))
|
|
return NULL;
|
|
if (globals == Py_None) {
|
|
globals = PyEval_GetGlobals();
|
|
if (locals == Py_None)
|
|
locals = PyEval_GetLocals();
|
|
}
|
|
else if (locals == Py_None)
|
|
locals = globals;
|
|
if (PyDict_GetItemString(globals, "__builtins__") == NULL) {
|
|
if (PyDict_SetItemString(globals, "__builtins__",
|
|
PyEval_GetBuiltins()) != 0)
|
|
return NULL;
|
|
}
|
|
Py_BEGIN_ALLOW_THREADS
|
|
fp = fopen(filename, "r");
|
|
Py_END_ALLOW_THREADS
|
|
if (fp == NULL) {
|
|
PyErr_SetFromErrno(PyExc_IOError);
|
|
return NULL;
|
|
}
|
|
res = PyRun_FileEx(fp, filename, Py_file_input, globals, locals, 1);
|
|
return res;
|
|
}
|
|
|
|
static char execfile_doc[] =
|
|
"execfile(filename[, globals[, locals]])\n\
|
|
\n\
|
|
Read and execute a Python script from a file.\n\
|
|
The globals and locals are dictionaries, defaulting to the current\n\
|
|
globals and locals. If only globals is given, locals defaults to it.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_getattr(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v, *result, *dflt = NULL;
|
|
PyObject *name;
|
|
|
|
if (!PyArg_ParseTuple(args, "OO|O:getattr", &v, &name, &dflt))
|
|
return NULL;
|
|
result = PyObject_GetAttr(v, name);
|
|
if (result == NULL && dflt != NULL) {
|
|
PyErr_Clear();
|
|
Py_INCREF(dflt);
|
|
result = dflt;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static char getattr_doc[] =
|
|
"getattr(object, name[, default]) -> value\n\
|
|
\n\
|
|
Get a named attribute from an object; getattr(x, 'y') is equivalent to x.y.\n\
|
|
When a default argument is given, it is returned when the attribute doesn't\n\
|
|
exist; without it, an exception is raised in that case.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_globals(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *d;
|
|
|
|
if (!PyArg_ParseTuple(args, ":globals"))
|
|
return NULL;
|
|
d = PyEval_GetGlobals();
|
|
Py_INCREF(d);
|
|
return d;
|
|
}
|
|
|
|
static char globals_doc[] =
|
|
"globals() -> dictionary\n\
|
|
\n\
|
|
Return the dictionary containing the current scope's global variables.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_hasattr(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
PyObject *name;
|
|
|
|
if (!PyArg_ParseTuple(args, "OO:hasattr", &v, &name))
|
|
return NULL;
|
|
v = PyObject_GetAttr(v, name);
|
|
if (v == NULL) {
|
|
PyErr_Clear();
|
|
Py_INCREF(Py_False);
|
|
return Py_False;
|
|
}
|
|
Py_DECREF(v);
|
|
Py_INCREF(Py_True);
|
|
return Py_True;
|
|
}
|
|
|
|
static char hasattr_doc[] =
|
|
"hasattr(object, name) -> Boolean\n\
|
|
\n\
|
|
Return whether the object has an attribute with the given name.\n\
|
|
(This is done by calling getattr(object, name) and catching exceptions.)";
|
|
|
|
|
|
static PyObject *
|
|
builtin_id(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:id", &v))
|
|
return NULL;
|
|
return PyLong_FromVoidPtr(v);
|
|
}
|
|
|
|
static char id_doc[] =
|
|
"id(object) -> integer\n\
|
|
\n\
|
|
Return the identity of an object. This is guaranteed to be unique among\n\
|
|
simultaneously existing objects. (Hint: it's the object's memory address.)";
|
|
|
|
|
|
static PyObject *
|
|
builtin_map(PyObject *self, PyObject *args)
|
|
{
|
|
typedef struct {
|
|
PyObject *seq;
|
|
PySequenceMethods *sqf;
|
|
int len;
|
|
} sequence;
|
|
|
|
PyObject *func, *result;
|
|
sequence *seqs = NULL, *sqp;
|
|
int n, len;
|
|
register int i, j;
|
|
|
|
n = PyTuple_Size(args);
|
|
if (n < 2) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"map() requires at least two args");
|
|
return NULL;
|
|
}
|
|
|
|
func = PyTuple_GetItem(args, 0);
|
|
n--;
|
|
|
|
if (func == Py_None && n == 1) {
|
|
/* map(None, S) is the same as list(S). */
|
|
return PySequence_List(PyTuple_GetItem(args, 1));
|
|
}
|
|
|
|
if ((seqs = PyMem_NEW(sequence, n)) == NULL) {
|
|
PyErr_NoMemory();
|
|
goto Fail_2;
|
|
}
|
|
|
|
for (len = 0, i = 0, sqp = seqs; i < n; ++i, ++sqp) {
|
|
int curlen;
|
|
PySequenceMethods *sqf;
|
|
|
|
if ((sqp->seq = PyTuple_GetItem(args, i + 1)) == NULL)
|
|
goto Fail_2;
|
|
|
|
sqp->sqf = sqf = sqp->seq->ob_type->tp_as_sequence;
|
|
if (sqf == NULL ||
|
|
sqf->sq_length == NULL ||
|
|
sqf->sq_item == NULL)
|
|
{
|
|
static char errmsg[] =
|
|
"argument %d to map() must be a sequence object";
|
|
char errbuf[sizeof(errmsg) + 25];
|
|
|
|
sprintf(errbuf, errmsg, i+2);
|
|
PyErr_SetString(PyExc_TypeError, errbuf);
|
|
goto Fail_2;
|
|
}
|
|
|
|
if ((curlen = sqp->len = (*sqp->sqf->sq_length)(sqp->seq)) < 0)
|
|
goto Fail_2;
|
|
|
|
if (curlen > len)
|
|
len = curlen;
|
|
}
|
|
|
|
if ((result = (PyObject *) PyList_New(len)) == NULL)
|
|
goto Fail_2;
|
|
|
|
for (i = 0; ; ++i) {
|
|
PyObject *alist, *item=NULL, *value;
|
|
int any = 0;
|
|
|
|
if (func == Py_None && n == 1)
|
|
alist = NULL;
|
|
else {
|
|
if ((alist = PyTuple_New(n)) == NULL)
|
|
goto Fail_1;
|
|
}
|
|
|
|
for (j = 0, sqp = seqs; j < n; ++j, ++sqp) {
|
|
if (sqp->len < 0) {
|
|
Py_INCREF(Py_None);
|
|
item = Py_None;
|
|
}
|
|
else {
|
|
item = (*sqp->sqf->sq_item)(sqp->seq, i);
|
|
if (item == NULL) {
|
|
if (PyErr_ExceptionMatches(
|
|
PyExc_IndexError))
|
|
{
|
|
PyErr_Clear();
|
|
Py_INCREF(Py_None);
|
|
item = Py_None;
|
|
sqp->len = -1;
|
|
}
|
|
else {
|
|
goto Fail_0;
|
|
}
|
|
}
|
|
else
|
|
any = 1;
|
|
|
|
}
|
|
if (!alist)
|
|
break;
|
|
if (PyTuple_SetItem(alist, j, item) < 0) {
|
|
Py_DECREF(item);
|
|
goto Fail_0;
|
|
}
|
|
continue;
|
|
|
|
Fail_0:
|
|
Py_XDECREF(alist);
|
|
goto Fail_1;
|
|
}
|
|
|
|
if (!alist)
|
|
alist = item;
|
|
|
|
if (!any) {
|
|
Py_DECREF(alist);
|
|
break;
|
|
}
|
|
|
|
if (func == Py_None)
|
|
value = alist;
|
|
else {
|
|
value = PyEval_CallObject(func, alist);
|
|
Py_DECREF(alist);
|
|
if (value == NULL)
|
|
goto Fail_1;
|
|
}
|
|
if (i >= len) {
|
|
int status = PyList_Append(result, value);
|
|
Py_DECREF(value);
|
|
if (status < 0)
|
|
goto Fail_1;
|
|
}
|
|
else {
|
|
if (PyList_SetItem(result, i, value) < 0)
|
|
goto Fail_1;
|
|
}
|
|
}
|
|
|
|
if (i < len && PyList_SetSlice(result, i, len, NULL) < 0)
|
|
goto Fail_1;
|
|
|
|
PyMem_DEL(seqs);
|
|
return result;
|
|
|
|
Fail_1:
|
|
Py_DECREF(result);
|
|
Fail_2:
|
|
if (seqs) PyMem_DEL(seqs);
|
|
return NULL;
|
|
}
|
|
|
|
static char map_doc[] =
|
|
"map(function, sequence[, sequence, ...]) -> list\n\
|
|
\n\
|
|
Return a list of the results of applying the function to the items of\n\
|
|
the argument sequence(s). If more than one sequence is given, the\n\
|
|
function is called with an argument list consisting of the corresponding\n\
|
|
item of each sequence, substituting None for missing values when not all\n\
|
|
sequences have the same length. If the function is None, return a list of\n\
|
|
the items of the sequence (or a list of tuples if more than one sequence).";
|
|
|
|
|
|
static PyObject *
|
|
builtin_setattr(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
PyObject *name;
|
|
PyObject *value;
|
|
|
|
if (!PyArg_ParseTuple(args, "OOO:setattr", &v, &name, &value))
|
|
return NULL;
|
|
if (PyObject_SetAttr(v, name, value) != 0)
|
|
return NULL;
|
|
Py_INCREF(Py_None);
|
|
return Py_None;
|
|
}
|
|
|
|
static char setattr_doc[] =
|
|
"setattr(object, name, value)\n\
|
|
\n\
|
|
Set a named attribute on an object; setattr(x, 'y', v) is equivalent to\n\
|
|
``x.y = v''.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_delattr(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
PyObject *name;
|
|
|
|
if (!PyArg_ParseTuple(args, "OO:delattr", &v, &name))
|
|
return NULL;
|
|
if (PyObject_SetAttr(v, name, (PyObject *)NULL) != 0)
|
|
return NULL;
|
|
Py_INCREF(Py_None);
|
|
return Py_None;
|
|
}
|
|
|
|
static char delattr_doc[] =
|
|
"delattr(object, name)\n\
|
|
\n\
|
|
Delete a named attribute on an object; delattr(x, 'y') is equivalent to\n\
|
|
``del x.y''.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_hash(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
long x;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:hash", &v))
|
|
return NULL;
|
|
x = PyObject_Hash(v);
|
|
if (x == -1)
|
|
return NULL;
|
|
return PyInt_FromLong(x);
|
|
}
|
|
|
|
static char hash_doc[] =
|
|
"hash(object) -> integer\n\
|
|
\n\
|
|
Return a hash value for the object. Two objects with the same value have\n\
|
|
the same hash value. The reverse is not necessarily true, but likely.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_hex(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
PyNumberMethods *nb;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:hex", &v))
|
|
return NULL;
|
|
|
|
if ((nb = v->ob_type->tp_as_number) == NULL ||
|
|
nb->nb_hex == NULL) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"hex() argument can't be converted to hex");
|
|
return NULL;
|
|
}
|
|
return (*nb->nb_hex)(v);
|
|
}
|
|
|
|
static char hex_doc[] =
|
|
"hex(number) -> string\n\
|
|
\n\
|
|
Return the hexadecimal representation of an integer or long integer.";
|
|
|
|
|
|
static PyObject *builtin_raw_input(PyObject *, PyObject *);
|
|
|
|
static PyObject *
|
|
builtin_input(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *line;
|
|
char *str;
|
|
PyObject *res;
|
|
PyObject *globals, *locals;
|
|
|
|
line = builtin_raw_input(self, args);
|
|
if (line == NULL)
|
|
return line;
|
|
if (!PyArg_Parse(line, "s;embedded '\\0' in input line", &str))
|
|
return NULL;
|
|
while (*str == ' ' || *str == '\t')
|
|
str++;
|
|
globals = PyEval_GetGlobals();
|
|
locals = PyEval_GetLocals();
|
|
if (PyDict_GetItemString(globals, "__builtins__") == NULL) {
|
|
if (PyDict_SetItemString(globals, "__builtins__",
|
|
PyEval_GetBuiltins()) != 0)
|
|
return NULL;
|
|
}
|
|
res = PyRun_String(str, Py_eval_input, globals, locals);
|
|
Py_DECREF(line);
|
|
return res;
|
|
}
|
|
|
|
static char input_doc[] =
|
|
"input([prompt]) -> value\n\
|
|
\n\
|
|
Equivalent to eval(raw_input(prompt)).";
|
|
|
|
|
|
static PyObject *
|
|
builtin_intern(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *s;
|
|
if (!PyArg_ParseTuple(args, "S:intern", &s))
|
|
return NULL;
|
|
Py_INCREF(s);
|
|
PyString_InternInPlace(&s);
|
|
return s;
|
|
}
|
|
|
|
static char intern_doc[] =
|
|
"intern(string) -> string\n\
|
|
\n\
|
|
``Intern'' the given string. This enters the string in the (global)\n\
|
|
table of interned strings whose purpose is to speed up dictionary lookups.\n\
|
|
Return the string itself or the previously interned string object with the\n\
|
|
same value.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_int(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
int base = -909; /* unlikely! */
|
|
|
|
if (!PyArg_ParseTuple(args, "O|i:int", &v, &base))
|
|
return NULL;
|
|
if (base == -909)
|
|
return PyNumber_Int(v);
|
|
else if (PyString_Check(v))
|
|
return PyInt_FromString(PyString_AS_STRING(v), NULL, base);
|
|
else if (PyUnicode_Check(v))
|
|
return PyInt_FromUnicode(PyUnicode_AS_UNICODE(v),
|
|
PyUnicode_GET_SIZE(v),
|
|
base);
|
|
else {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"int() can't convert non-string with explicit base");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static char int_doc[] =
|
|
"int(x[, base]) -> integer\n\
|
|
\n\
|
|
Convert a string or number to an integer, if possible. A floating point\n\
|
|
argument will be truncated towards zero (this does not include a string\n\
|
|
representation of a floating point number!) When converting a string, use\n\
|
|
the optional base. It is an error to supply a base when converting a\n\
|
|
non-string.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_long(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
int base = -909; /* unlikely! */
|
|
|
|
if (!PyArg_ParseTuple(args, "O|i:long", &v, &base))
|
|
return NULL;
|
|
if (base == -909)
|
|
return PyNumber_Long(v);
|
|
else if (PyString_Check(v))
|
|
return PyLong_FromString(PyString_AS_STRING(v), NULL, base);
|
|
else if (PyUnicode_Check(v))
|
|
return PyLong_FromUnicode(PyUnicode_AS_UNICODE(v),
|
|
PyUnicode_GET_SIZE(v),
|
|
base);
|
|
else {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"long() can't convert non-string with explicit base");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static char long_doc[] =
|
|
"long(x) -> long integer\n\
|
|
long(x, base) -> long integer\n\
|
|
\n\
|
|
Convert a string or number to a long integer, if possible. A floating\n\
|
|
point argument will be truncated towards zero (this does not include a\n\
|
|
string representation of a floating point number!) When converting a\n\
|
|
string, use the given base. It is an error to supply a base when\n\
|
|
converting a non-string.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_float(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:float", &v))
|
|
return NULL;
|
|
if (PyString_Check(v))
|
|
return PyFloat_FromString(v, NULL);
|
|
return PyNumber_Float(v);
|
|
}
|
|
|
|
static char float_doc[] =
|
|
"float(x) -> floating point number\n\
|
|
\n\
|
|
Convert a string or number to a floating point number, if possible.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_len(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
long res;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:len", &v))
|
|
return NULL;
|
|
res = PyObject_Size(v);
|
|
if (res < 0 && PyErr_Occurred())
|
|
return NULL;
|
|
return PyInt_FromLong(res);
|
|
}
|
|
|
|
static char len_doc[] =
|
|
"len(object) -> integer\n\
|
|
\n\
|
|
Return the number of items of a sequence or mapping.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_list(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:list", &v))
|
|
return NULL;
|
|
return PySequence_List(v);
|
|
}
|
|
|
|
static char list_doc[] =
|
|
"list(sequence) -> list\n\
|
|
\n\
|
|
Return a new list whose items are the same as those of the argument sequence.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_slice(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *start, *stop, *step;
|
|
|
|
start = stop = step = NULL;
|
|
|
|
if (!PyArg_ParseTuple(args, "O|OO:slice", &start, &stop, &step))
|
|
return NULL;
|
|
|
|
/* This swapping of stop and start is to maintain similarity with
|
|
range(). */
|
|
if (stop == NULL) {
|
|
stop = start;
|
|
start = NULL;
|
|
}
|
|
return PySlice_New(start, stop, step);
|
|
}
|
|
|
|
static char slice_doc[] =
|
|
"slice([start,] stop[, step]) -> slice object\n\
|
|
\n\
|
|
Create a slice object. This is used for slicing by the Numeric extensions.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_locals(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *d;
|
|
|
|
if (!PyArg_ParseTuple(args, ":locals"))
|
|
return NULL;
|
|
d = PyEval_GetLocals();
|
|
Py_INCREF(d);
|
|
return d;
|
|
}
|
|
|
|
static char locals_doc[] =
|
|
"locals() -> dictionary\n\
|
|
\n\
|
|
Return the dictionary containing the current scope's local variables.";
|
|
|
|
|
|
static PyObject *
|
|
min_max(PyObject *args, int op)
|
|
{
|
|
int i;
|
|
PyObject *v, *w, *x;
|
|
PySequenceMethods *sq;
|
|
|
|
if (PyTuple_Size(args) > 1)
|
|
v = args;
|
|
else if (!PyArg_ParseTuple(args, "O:min/max", &v))
|
|
return NULL;
|
|
sq = v->ob_type->tp_as_sequence;
|
|
if (sq == NULL || sq->sq_item == NULL) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"min() or max() arg must be a sequence");
|
|
return NULL;
|
|
}
|
|
w = NULL;
|
|
for (i = 0; ; i++) {
|
|
x = (*sq->sq_item)(v, i); /* Implies INCREF */
|
|
if (x == NULL) {
|
|
if (PyErr_ExceptionMatches(PyExc_IndexError)) {
|
|
PyErr_Clear();
|
|
break;
|
|
}
|
|
Py_XDECREF(w);
|
|
return NULL;
|
|
}
|
|
if (w == NULL)
|
|
w = x;
|
|
else {
|
|
int cmp = PyObject_RichCompareBool(x, w, op);
|
|
if (cmp > 0) {
|
|
Py_DECREF(w);
|
|
w = x;
|
|
}
|
|
else if (cmp < 0) {
|
|
Py_DECREF(x);
|
|
Py_XDECREF(w);
|
|
return NULL;
|
|
}
|
|
else
|
|
Py_DECREF(x);
|
|
}
|
|
}
|
|
if (w == NULL)
|
|
PyErr_SetString(PyExc_ValueError,
|
|
"min() or max() arg is an empty sequence");
|
|
return w;
|
|
}
|
|
|
|
static PyObject *
|
|
builtin_min(PyObject *self, PyObject *v)
|
|
{
|
|
return min_max(v, Py_LT);
|
|
}
|
|
|
|
static char min_doc[] =
|
|
"min(sequence) -> value\n\
|
|
min(a, b, c, ...) -> value\n\
|
|
\n\
|
|
With a single sequence argument, return its smallest item.\n\
|
|
With two or more arguments, return the smallest argument.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_max(PyObject *self, PyObject *v)
|
|
{
|
|
return min_max(v, Py_GT);
|
|
}
|
|
|
|
static char max_doc[] =
|
|
"max(sequence) -> value\n\
|
|
max(a, b, c, ...) -> value\n\
|
|
\n\
|
|
With a single sequence argument, return its largest item.\n\
|
|
With two or more arguments, return the largest argument.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_oct(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
PyNumberMethods *nb;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:oct", &v))
|
|
return NULL;
|
|
if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL ||
|
|
nb->nb_oct == NULL) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"oct() argument can't be converted to oct");
|
|
return NULL;
|
|
}
|
|
return (*nb->nb_oct)(v);
|
|
}
|
|
|
|
static char oct_doc[] =
|
|
"oct(number) -> string\n\
|
|
\n\
|
|
Return the octal representation of an integer or long integer.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_open(PyObject *self, PyObject *args)
|
|
{
|
|
char *name;
|
|
char *mode = "r";
|
|
int bufsize = -1;
|
|
PyObject *f;
|
|
|
|
if (!PyArg_ParseTuple(args, "s|si:open", &name, &mode, &bufsize))
|
|
return NULL;
|
|
f = PyFile_FromString(name, mode);
|
|
if (f != NULL)
|
|
PyFile_SetBufSize(f, bufsize);
|
|
return f;
|
|
}
|
|
|
|
static char open_doc[] =
|
|
"open(filename[, mode[, buffering]]) -> file object\n\
|
|
\n\
|
|
Open a file. The mode can be 'r', 'w' or 'a' for reading (default),\n\
|
|
writing or appending. The file will be created if it doesn't exist\n\
|
|
when opened for writing or appending; it will be truncated when\n\
|
|
opened for writing. Add a 'b' to the mode for binary files.\n\
|
|
Add a '+' to the mode to allow simultaneous reading and writing.\n\
|
|
If the buffering argument is given, 0 means unbuffered, 1 means line\n\
|
|
buffered, and larger numbers specify the buffer size.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_ord(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *obj;
|
|
long ord;
|
|
int size;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:ord", &obj))
|
|
return NULL;
|
|
|
|
if (PyString_Check(obj)) {
|
|
size = PyString_GET_SIZE(obj);
|
|
if (size == 1) {
|
|
ord = (long)((unsigned char)*PyString_AS_STRING(obj));
|
|
return PyInt_FromLong(ord);
|
|
}
|
|
} else if (PyUnicode_Check(obj)) {
|
|
size = PyUnicode_GET_SIZE(obj);
|
|
if (size == 1) {
|
|
ord = (long)*PyUnicode_AS_UNICODE(obj);
|
|
return PyInt_FromLong(ord);
|
|
}
|
|
} else {
|
|
PyErr_Format(PyExc_TypeError,
|
|
"ord() expected string of length 1, but " \
|
|
"%.200s found", obj->ob_type->tp_name);
|
|
return NULL;
|
|
}
|
|
|
|
PyErr_Format(PyExc_TypeError,
|
|
"ord() expected a character, "
|
|
"but string of length %d found",
|
|
size);
|
|
return NULL;
|
|
}
|
|
|
|
static char ord_doc[] =
|
|
"ord(c) -> integer\n\
|
|
\n\
|
|
Return the integer ordinal of a one-character string.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_pow(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v, *w, *z = Py_None;
|
|
|
|
if (!PyArg_ParseTuple(args, "OO|O:pow", &v, &w, &z))
|
|
return NULL;
|
|
return PyNumber_Power(v, w, z);
|
|
}
|
|
|
|
static char pow_doc[] =
|
|
"pow(x, y[, z]) -> number\n\
|
|
\n\
|
|
With two arguments, equivalent to x**y. With three arguments,\n\
|
|
equivalent to (x**y) % z, but may be more efficient (e.g. for longs).";
|
|
|
|
|
|
/* Return number of items in range/xrange (lo, hi, step). step > 0
|
|
* required. Return a value < 0 if & only if the true value is too
|
|
* large to fit in a signed long.
|
|
*/
|
|
static long
|
|
get_len_of_range(long lo, long hi, long step)
|
|
{
|
|
/* -------------------------------------------------------------
|
|
If lo >= hi, the range is empty.
|
|
Else if n values are in the range, the last one is
|
|
lo + (n-1)*step, which must be <= hi-1. Rearranging,
|
|
n <= (hi - lo - 1)/step + 1, so taking the floor of the RHS gives
|
|
the proper value. Since lo < hi in this case, hi-lo-1 >= 0, so
|
|
the RHS is non-negative and so truncation is the same as the
|
|
floor. Letting M be the largest positive long, the worst case
|
|
for the RHS numerator is hi=M, lo=-M-1, and then
|
|
hi-lo-1 = M-(-M-1)-1 = 2*M. Therefore unsigned long has enough
|
|
precision to compute the RHS exactly.
|
|
---------------------------------------------------------------*/
|
|
long n = 0;
|
|
if (lo < hi) {
|
|
unsigned long uhi = (unsigned long)hi;
|
|
unsigned long ulo = (unsigned long)lo;
|
|
unsigned long diff = uhi - ulo - 1;
|
|
n = (long)(diff / (unsigned long)step + 1);
|
|
}
|
|
return n;
|
|
}
|
|
|
|
static PyObject *
|
|
builtin_range(PyObject *self, PyObject *args)
|
|
{
|
|
long ilow = 0, ihigh = 0, istep = 1;
|
|
long bign;
|
|
int i, n;
|
|
|
|
PyObject *v;
|
|
|
|
if (PyTuple_Size(args) <= 1) {
|
|
if (!PyArg_ParseTuple(args,
|
|
"l;range() requires 1-3 int arguments",
|
|
&ihigh))
|
|
return NULL;
|
|
}
|
|
else {
|
|
if (!PyArg_ParseTuple(args,
|
|
"ll|l;range() requires 1-3 int arguments",
|
|
&ilow, &ihigh, &istep))
|
|
return NULL;
|
|
}
|
|
if (istep == 0) {
|
|
PyErr_SetString(PyExc_ValueError, "range() arg 3 must not be zero");
|
|
return NULL;
|
|
}
|
|
if (istep > 0)
|
|
bign = get_len_of_range(ilow, ihigh, istep);
|
|
else
|
|
bign = get_len_of_range(ihigh, ilow, -istep);
|
|
n = (int)bign;
|
|
if (bign < 0 || (long)n != bign) {
|
|
PyErr_SetString(PyExc_OverflowError,
|
|
"range() result has too many items");
|
|
return NULL;
|
|
}
|
|
v = PyList_New(n);
|
|
if (v == NULL)
|
|
return NULL;
|
|
for (i = 0; i < n; i++) {
|
|
PyObject *w = PyInt_FromLong(ilow);
|
|
if (w == NULL) {
|
|
Py_DECREF(v);
|
|
return NULL;
|
|
}
|
|
PyList_SET_ITEM(v, i, w);
|
|
ilow += istep;
|
|
}
|
|
return v;
|
|
}
|
|
|
|
static char range_doc[] =
|
|
"range([start,] stop[, step]) -> list of integers\n\
|
|
\n\
|
|
Return a list containing an arithmetic progression of integers.\n\
|
|
range(i, j) returns [i, i+1, i+2, ..., j-1]; start (!) defaults to 0.\n\
|
|
When step is given, it specifies the increment (or decrement).\n\
|
|
For example, range(4) returns [0, 1, 2, 3]. The end point is omitted!\n\
|
|
These are exactly the valid indices for a list of 4 elements.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_xrange(PyObject *self, PyObject *args)
|
|
{
|
|
long ilow = 0, ihigh = 0, istep = 1;
|
|
long n;
|
|
|
|
if (PyTuple_Size(args) <= 1) {
|
|
if (!PyArg_ParseTuple(args,
|
|
"l;xrange() requires 1-3 int arguments",
|
|
&ihigh))
|
|
return NULL;
|
|
}
|
|
else {
|
|
if (!PyArg_ParseTuple(args,
|
|
"ll|l;xrange() requires 1-3 int arguments",
|
|
&ilow, &ihigh, &istep))
|
|
return NULL;
|
|
}
|
|
if (istep == 0) {
|
|
PyErr_SetString(PyExc_ValueError, "xrange() arg 3 must not be zero");
|
|
return NULL;
|
|
}
|
|
if (istep > 0)
|
|
n = get_len_of_range(ilow, ihigh, istep);
|
|
else
|
|
n = get_len_of_range(ihigh, ilow, -istep);
|
|
if (n < 0) {
|
|
PyErr_SetString(PyExc_OverflowError,
|
|
"xrange() result has too many items");
|
|
return NULL;
|
|
}
|
|
return PyRange_New(ilow, n, istep, 1);
|
|
}
|
|
|
|
static char xrange_doc[] =
|
|
"xrange([start,] stop[, step]) -> xrange object\n\
|
|
\n\
|
|
Like range(), but instead of returning a list, returns an object that\n\
|
|
generates the numbers in the range on demand. This is slightly slower\n\
|
|
than range() but more memory efficient.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_raw_input(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v = NULL;
|
|
PyObject *f;
|
|
|
|
if (!PyArg_ParseTuple(args, "|O:[raw_]input", &v))
|
|
return NULL;
|
|
if (PyFile_AsFile(PySys_GetObject("stdin")) == stdin &&
|
|
PyFile_AsFile(PySys_GetObject("stdout")) == stdout &&
|
|
isatty(fileno(stdin)) && isatty(fileno(stdout))) {
|
|
PyObject *po;
|
|
char *prompt;
|
|
char *s;
|
|
PyObject *result;
|
|
if (v != NULL) {
|
|
po = PyObject_Str(v);
|
|
if (po == NULL)
|
|
return NULL;
|
|
prompt = PyString_AsString(po);
|
|
if (prompt == NULL)
|
|
return NULL;
|
|
}
|
|
else {
|
|
po = NULL;
|
|
prompt = "";
|
|
}
|
|
s = PyOS_Readline(prompt);
|
|
Py_XDECREF(po);
|
|
if (s == NULL) {
|
|
PyErr_SetNone(PyExc_KeyboardInterrupt);
|
|
return NULL;
|
|
}
|
|
if (*s == '\0') {
|
|
PyErr_SetNone(PyExc_EOFError);
|
|
result = NULL;
|
|
}
|
|
else { /* strip trailing '\n' */
|
|
size_t len = strlen(s);
|
|
if (len > INT_MAX) {
|
|
PyErr_SetString(PyExc_OverflowError, "input too long");
|
|
result = NULL;
|
|
}
|
|
else {
|
|
result = PyString_FromStringAndSize(s, (int)(len-1));
|
|
}
|
|
}
|
|
PyMem_FREE(s);
|
|
return result;
|
|
}
|
|
if (v != NULL) {
|
|
f = PySys_GetObject("stdout");
|
|
if (f == NULL) {
|
|
PyErr_SetString(PyExc_RuntimeError, "lost sys.stdout");
|
|
return NULL;
|
|
}
|
|
if (Py_FlushLine() != 0 ||
|
|
PyFile_WriteObject(v, f, Py_PRINT_RAW) != 0)
|
|
return NULL;
|
|
}
|
|
f = PySys_GetObject("stdin");
|
|
if (f == NULL) {
|
|
PyErr_SetString(PyExc_RuntimeError, "lost sys.stdin");
|
|
return NULL;
|
|
}
|
|
return PyFile_GetLine(f, -1);
|
|
}
|
|
|
|
static char raw_input_doc[] =
|
|
"raw_input([prompt]) -> string\n\
|
|
\n\
|
|
Read a string from standard input. The trailing newline is stripped.\n\
|
|
If the user hits EOF (Unix: Ctl-D, Windows: Ctl-Z+Return), raise EOFError.\n\
|
|
On Unix, GNU readline is used if enabled. The prompt string, if given,\n\
|
|
is printed without a trailing newline before reading.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_reduce(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *seq, *func, *result = NULL;
|
|
PySequenceMethods *sqf;
|
|
register int i;
|
|
|
|
if (!PyArg_ParseTuple(args, "OO|O:reduce", &func, &seq, &result))
|
|
return NULL;
|
|
if (result != NULL)
|
|
Py_INCREF(result);
|
|
|
|
sqf = seq->ob_type->tp_as_sequence;
|
|
if (sqf == NULL || sqf->sq_item == NULL) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"reduce() arg 2 must be a sequence");
|
|
return NULL;
|
|
}
|
|
|
|
if ((args = PyTuple_New(2)) == NULL)
|
|
goto Fail;
|
|
|
|
for (i = 0; ; ++i) {
|
|
PyObject *op2;
|
|
|
|
if (args->ob_refcnt > 1) {
|
|
Py_DECREF(args);
|
|
if ((args = PyTuple_New(2)) == NULL)
|
|
goto Fail;
|
|
}
|
|
|
|
if ((op2 = (*sqf->sq_item)(seq, i)) == NULL) {
|
|
if (PyErr_ExceptionMatches(PyExc_IndexError)) {
|
|
PyErr_Clear();
|
|
break;
|
|
}
|
|
goto Fail;
|
|
}
|
|
|
|
if (result == NULL)
|
|
result = op2;
|
|
else {
|
|
PyTuple_SetItem(args, 0, result);
|
|
PyTuple_SetItem(args, 1, op2);
|
|
if ((result = PyEval_CallObject(func, args)) == NULL)
|
|
goto Fail;
|
|
}
|
|
}
|
|
|
|
Py_DECREF(args);
|
|
|
|
if (result == NULL)
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"reduce() of empty sequence with no initial value");
|
|
|
|
return result;
|
|
|
|
Fail:
|
|
Py_XDECREF(args);
|
|
Py_XDECREF(result);
|
|
return NULL;
|
|
}
|
|
|
|
static char reduce_doc[] =
|
|
"reduce(function, sequence[, initial]) -> value\n\
|
|
\n\
|
|
Apply a function of two arguments cumulatively to the items of a sequence,\n\
|
|
from left to right, so as to reduce the sequence to a single value.\n\
|
|
For example, reduce(lambda x, y: x+y, [1, 2, 3, 4, 5]) calculates\n\
|
|
((((1+2)+3)+4)+5). If initial is present, it is placed before the items\n\
|
|
of the sequence in the calculation, and serves as a default when the\n\
|
|
sequence is empty.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_reload(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:reload", &v))
|
|
return NULL;
|
|
return PyImport_ReloadModule(v);
|
|
}
|
|
|
|
static char reload_doc[] =
|
|
"reload(module) -> module\n\
|
|
\n\
|
|
Reload the module. The module must have been successfully imported before.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_repr(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:repr", &v))
|
|
return NULL;
|
|
return PyObject_Repr(v);
|
|
}
|
|
|
|
static char repr_doc[] =
|
|
"repr(object) -> string\n\
|
|
\n\
|
|
Return the canonical string representation of the object.\n\
|
|
For most object types, eval(repr(object)) == object.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_round(PyObject *self, PyObject *args)
|
|
{
|
|
double x;
|
|
double f;
|
|
int ndigits = 0;
|
|
int i;
|
|
|
|
if (!PyArg_ParseTuple(args, "d|i:round", &x, &ndigits))
|
|
return NULL;
|
|
f = 1.0;
|
|
i = abs(ndigits);
|
|
while (--i >= 0)
|
|
f = f*10.0;
|
|
if (ndigits < 0)
|
|
x /= f;
|
|
else
|
|
x *= f;
|
|
if (x >= 0.0)
|
|
x = floor(x + 0.5);
|
|
else
|
|
x = ceil(x - 0.5);
|
|
if (ndigits < 0)
|
|
x *= f;
|
|
else
|
|
x /= f;
|
|
return PyFloat_FromDouble(x);
|
|
}
|
|
|
|
static char round_doc[] =
|
|
"round(number[, ndigits]) -> floating point number\n\
|
|
\n\
|
|
Round a number to a given precision in decimal digits (default 0 digits).\n\
|
|
This always returns a floating point number. Precision may be negative.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_str(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:str", &v))
|
|
return NULL;
|
|
return PyObject_Str(v);
|
|
}
|
|
|
|
static char str_doc[] =
|
|
"str(object) -> string\n\
|
|
\n\
|
|
Return a nice string representation of the object.\n\
|
|
If the argument is a string, the return value is the same object.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_tuple(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:tuple", &v))
|
|
return NULL;
|
|
return PySequence_Tuple(v);
|
|
}
|
|
|
|
static char tuple_doc[] =
|
|
"tuple(sequence) -> list\n\
|
|
\n\
|
|
Return a tuple whose items are the same as those of the argument sequence.\n\
|
|
If the argument is a tuple, the return value is the same object.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_type(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v;
|
|
|
|
if (!PyArg_ParseTuple(args, "O:type", &v))
|
|
return NULL;
|
|
v = (PyObject *)v->ob_type;
|
|
Py_INCREF(v);
|
|
return v;
|
|
}
|
|
|
|
static char type_doc[] =
|
|
"type(object) -> type object\n\
|
|
\n\
|
|
Return the type of the object.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_vars(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *v = NULL;
|
|
PyObject *d;
|
|
|
|
if (!PyArg_ParseTuple(args, "|O:vars", &v))
|
|
return NULL;
|
|
if (v == NULL) {
|
|
d = PyEval_GetLocals();
|
|
if (d == NULL) {
|
|
if (!PyErr_Occurred())
|
|
PyErr_SetString(PyExc_SystemError,
|
|
"no locals!?");
|
|
}
|
|
else
|
|
Py_INCREF(d);
|
|
}
|
|
else {
|
|
d = PyObject_GetAttrString(v, "__dict__");
|
|
if (d == NULL) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"vars() argument must have __dict__ attribute");
|
|
return NULL;
|
|
}
|
|
}
|
|
return d;
|
|
}
|
|
|
|
static char vars_doc[] =
|
|
"vars([object]) -> dictionary\n\
|
|
\n\
|
|
Without arguments, equivalent to locals().\n\
|
|
With an argument, equivalent to object.__dict__.";
|
|
|
|
static int
|
|
abstract_issubclass(PyObject *derived, PyObject *cls, int first)
|
|
{
|
|
static PyObject *__bases__ = NULL;
|
|
PyObject *bases;
|
|
int i, n;
|
|
int r = 0;
|
|
|
|
if (__bases__ == NULL) {
|
|
__bases__ = PyString_FromString("__bases__");
|
|
if (__bases__ == NULL)
|
|
return -1;
|
|
}
|
|
|
|
if (first) {
|
|
bases = PyObject_GetAttr(cls, __bases__);
|
|
if (bases == NULL || !PyTuple_Check(bases)) {
|
|
Py_XDECREF(bases);
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"issubclass() arg 2 must be a class");
|
|
return -1;
|
|
}
|
|
Py_DECREF(bases);
|
|
}
|
|
|
|
if (derived == cls)
|
|
return 1;
|
|
|
|
bases = PyObject_GetAttr(derived, __bases__);
|
|
if (bases == NULL || !PyTuple_Check(bases)) {
|
|
Py_XDECREF(bases);
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"issubclass() arg 1 must be a class");
|
|
return -1;
|
|
}
|
|
|
|
n = PyTuple_GET_SIZE(bases);
|
|
for (i = 0; i < n; i++) {
|
|
r = abstract_issubclass(PyTuple_GET_ITEM(bases, i), cls, 0);
|
|
if (r != 0)
|
|
break;
|
|
}
|
|
|
|
Py_DECREF(bases);
|
|
|
|
return r;
|
|
}
|
|
|
|
static PyObject *
|
|
builtin_isinstance(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *inst;
|
|
PyObject *cls;
|
|
PyObject *icls;
|
|
static PyObject *__class__ = NULL;
|
|
int retval = 0;
|
|
|
|
if (!PyArg_ParseTuple(args, "OO:isinstance", &inst, &cls))
|
|
return NULL;
|
|
|
|
if (PyClass_Check(cls)) {
|
|
if (PyInstance_Check(inst)) {
|
|
PyObject *inclass =
|
|
(PyObject*)((PyInstanceObject*)inst)->in_class;
|
|
retval = PyClass_IsSubclass(inclass, cls);
|
|
}
|
|
}
|
|
else if (PyType_Check(cls)) {
|
|
retval = ((PyObject *)(inst->ob_type) == cls);
|
|
}
|
|
else if (!PyInstance_Check(inst)) {
|
|
if (__class__ == NULL) {
|
|
__class__ = PyString_FromString("__class__");
|
|
if (__class__ == NULL)
|
|
return NULL;
|
|
}
|
|
icls = PyObject_GetAttr(inst, __class__);
|
|
if (icls != NULL) {
|
|
retval = abstract_issubclass(icls, cls, 1);
|
|
Py_DECREF(icls);
|
|
if (retval < 0 &&
|
|
!PyErr_ExceptionMatches(PyExc_TypeError))
|
|
return NULL;
|
|
}
|
|
else
|
|
retval = -1;
|
|
}
|
|
else
|
|
retval = -1;
|
|
|
|
if (retval < 0) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"isinstance() arg 2 must be a class or type");
|
|
return NULL;
|
|
}
|
|
return PyInt_FromLong(retval);
|
|
}
|
|
|
|
static char isinstance_doc[] =
|
|
"isinstance(object, class-or-type) -> Boolean\n\
|
|
\n\
|
|
Return whether an object is an instance of a class or of a subclass thereof.\n\
|
|
With a type as second argument, return whether that is the object's type.";
|
|
|
|
|
|
static PyObject *
|
|
builtin_issubclass(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *derived;
|
|
PyObject *cls;
|
|
int retval;
|
|
|
|
if (!PyArg_ParseTuple(args, "OO:issubclass", &derived, &cls))
|
|
return NULL;
|
|
|
|
if (!PyClass_Check(derived) || !PyClass_Check(cls)) {
|
|
retval = abstract_issubclass(derived, cls, 1);
|
|
if (retval < 0)
|
|
return NULL;
|
|
}
|
|
else {
|
|
/* shortcut */
|
|
if (!(retval = (derived == cls)))
|
|
retval = PyClass_IsSubclass(derived, cls);
|
|
}
|
|
|
|
return PyInt_FromLong(retval);
|
|
}
|
|
|
|
static char issubclass_doc[] =
|
|
"issubclass(C, B) -> Boolean\n\
|
|
\n\
|
|
Return whether class C is a subclass (i.e., a derived class) of class B.";
|
|
|
|
|
|
static PyObject*
|
|
builtin_zip(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *ret;
|
|
int itemsize = PySequence_Length(args);
|
|
int i, j;
|
|
|
|
if (itemsize < 1) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"zip() requires at least one sequence");
|
|
return NULL;
|
|
}
|
|
/* args must be a tuple */
|
|
assert(PyTuple_Check(args));
|
|
|
|
if ((ret = PyList_New(0)) == NULL)
|
|
return NULL;
|
|
|
|
for (i = 0;; i++) {
|
|
PyObject *next = PyTuple_New(itemsize);
|
|
if (!next) {
|
|
Py_DECREF(ret);
|
|
return NULL;
|
|
}
|
|
for (j = 0; j < itemsize; j++) {
|
|
PyObject *seq = PyTuple_GET_ITEM(args, j);
|
|
PyObject *item = PySequence_GetItem(seq, i);
|
|
|
|
if (!item) {
|
|
if (PyErr_ExceptionMatches(PyExc_IndexError)) {
|
|
PyErr_Clear();
|
|
Py_DECREF(next);
|
|
return ret;
|
|
}
|
|
Py_DECREF(next);
|
|
Py_DECREF(ret);
|
|
return NULL;
|
|
}
|
|
PyTuple_SET_ITEM(next, j, item);
|
|
}
|
|
PyList_Append(ret, next);
|
|
Py_DECREF(next);
|
|
}
|
|
/* no return */
|
|
}
|
|
|
|
|
|
static char zip_doc[] =
|
|
"zip(seq1 [, seq2 [...]]) -> [(seq1[0], seq2[0] ...), (...)]\n\
|
|
\n\
|
|
Return a list of tuples, where each tuple contains the i-th element\n\
|
|
from each of the argument sequences. The returned list is truncated\n\
|
|
in length to the length of the shortest argument sequence.";
|
|
|
|
|
|
static PyMethodDef builtin_methods[] = {
|
|
{"__import__", builtin___import__, 1, import_doc},
|
|
{"abs", builtin_abs, 1, abs_doc},
|
|
{"apply", builtin_apply, 1, apply_doc},
|
|
{"buffer", builtin_buffer, 1, buffer_doc},
|
|
{"callable", builtin_callable, 1, callable_doc},
|
|
{"chr", builtin_chr, 1, chr_doc},
|
|
{"cmp", builtin_cmp, 1, cmp_doc},
|
|
{"coerce", builtin_coerce, 1, coerce_doc},
|
|
{"compile", builtin_compile, 1, compile_doc},
|
|
#ifndef WITHOUT_COMPLEX
|
|
{"complex", builtin_complex, 1, complex_doc},
|
|
#endif
|
|
{"delattr", builtin_delattr, 1, delattr_doc},
|
|
{"dir", builtin_dir, 1, dir_doc},
|
|
{"divmod", builtin_divmod, 1, divmod_doc},
|
|
{"eval", builtin_eval, 1, eval_doc},
|
|
{"execfile", builtin_execfile, 1, execfile_doc},
|
|
{"filter", builtin_filter, 1, filter_doc},
|
|
{"float", builtin_float, 1, float_doc},
|
|
{"getattr", builtin_getattr, 1, getattr_doc},
|
|
{"globals", builtin_globals, 1, globals_doc},
|
|
{"hasattr", builtin_hasattr, 1, hasattr_doc},
|
|
{"hash", builtin_hash, 1, hash_doc},
|
|
{"hex", builtin_hex, 1, hex_doc},
|
|
{"id", builtin_id, 1, id_doc},
|
|
{"input", builtin_input, 1, input_doc},
|
|
{"intern", builtin_intern, 1, intern_doc},
|
|
{"int", builtin_int, 1, int_doc},
|
|
{"isinstance", builtin_isinstance, 1, isinstance_doc},
|
|
{"issubclass", builtin_issubclass, 1, issubclass_doc},
|
|
{"len", builtin_len, 1, len_doc},
|
|
{"list", builtin_list, 1, list_doc},
|
|
{"locals", builtin_locals, 1, locals_doc},
|
|
{"long", builtin_long, 1, long_doc},
|
|
{"map", builtin_map, 1, map_doc},
|
|
{"max", builtin_max, 1, max_doc},
|
|
{"min", builtin_min, 1, min_doc},
|
|
{"oct", builtin_oct, 1, oct_doc},
|
|
{"open", builtin_open, 1, open_doc},
|
|
{"ord", builtin_ord, 1, ord_doc},
|
|
{"pow", builtin_pow, 1, pow_doc},
|
|
{"range", builtin_range, 1, range_doc},
|
|
{"raw_input", builtin_raw_input, 1, raw_input_doc},
|
|
{"reduce", builtin_reduce, 1, reduce_doc},
|
|
{"reload", builtin_reload, 1, reload_doc},
|
|
{"repr", builtin_repr, 1, repr_doc},
|
|
{"round", builtin_round, 1, round_doc},
|
|
{"setattr", builtin_setattr, 1, setattr_doc},
|
|
{"slice", builtin_slice, 1, slice_doc},
|
|
{"str", builtin_str, 1, str_doc},
|
|
{"tuple", builtin_tuple, 1, tuple_doc},
|
|
{"type", builtin_type, 1, type_doc},
|
|
{"unicode", builtin_unicode, 1, unicode_doc},
|
|
{"unichr", builtin_unichr, 1, unichr_doc},
|
|
{"vars", builtin_vars, 1, vars_doc},
|
|
{"xrange", builtin_xrange, 1, xrange_doc},
|
|
{"zip", builtin_zip, 1, zip_doc},
|
|
{NULL, NULL},
|
|
};
|
|
|
|
static char builtin_doc[] =
|
|
"Built-in functions, exceptions, and other objects.\n\
|
|
\n\
|
|
Noteworthy: None is the `nil' object; Ellipsis represents `...' in slices.";
|
|
|
|
PyObject *
|
|
_PyBuiltin_Init(void)
|
|
{
|
|
PyObject *mod, *dict, *debug;
|
|
mod = Py_InitModule4("__builtin__", builtin_methods,
|
|
builtin_doc, (PyObject *)NULL,
|
|
PYTHON_API_VERSION);
|
|
if (mod == NULL)
|
|
return NULL;
|
|
dict = PyModule_GetDict(mod);
|
|
if (PyDict_SetItemString(dict, "None", Py_None) < 0)
|
|
return NULL;
|
|
if (PyDict_SetItemString(dict, "Ellipsis", Py_Ellipsis) < 0)
|
|
return NULL;
|
|
if (PyDict_SetItemString(dict, "NotImplemented",
|
|
Py_NotImplemented) < 0)
|
|
return NULL;
|
|
debug = PyInt_FromLong(Py_OptimizeFlag == 0);
|
|
if (PyDict_SetItemString(dict, "__debug__", debug) < 0) {
|
|
Py_XDECREF(debug);
|
|
return NULL;
|
|
}
|
|
Py_XDECREF(debug);
|
|
|
|
return mod;
|
|
}
|
|
|
|
/* Helper for filter(): filter a tuple through a function */
|
|
|
|
static PyObject *
|
|
filtertuple(PyObject *func, PyObject *tuple)
|
|
{
|
|
PyObject *result;
|
|
register int i, j;
|
|
int len = PyTuple_Size(tuple);
|
|
|
|
if (len == 0) {
|
|
Py_INCREF(tuple);
|
|
return tuple;
|
|
}
|
|
|
|
if ((result = PyTuple_New(len)) == NULL)
|
|
return NULL;
|
|
|
|
for (i = j = 0; i < len; ++i) {
|
|
PyObject *item, *good;
|
|
int ok;
|
|
|
|
if ((item = PyTuple_GetItem(tuple, i)) == NULL)
|
|
goto Fail_1;
|
|
if (func == Py_None) {
|
|
Py_INCREF(item);
|
|
good = item;
|
|
}
|
|
else {
|
|
PyObject *arg = Py_BuildValue("(O)", item);
|
|
if (arg == NULL)
|
|
goto Fail_1;
|
|
good = PyEval_CallObject(func, arg);
|
|
Py_DECREF(arg);
|
|
if (good == NULL)
|
|
goto Fail_1;
|
|
}
|
|
ok = PyObject_IsTrue(good);
|
|
Py_DECREF(good);
|
|
if (ok) {
|
|
Py_INCREF(item);
|
|
if (PyTuple_SetItem(result, j++, item) < 0)
|
|
goto Fail_1;
|
|
}
|
|
}
|
|
|
|
if (_PyTuple_Resize(&result, j, 0) < 0)
|
|
return NULL;
|
|
|
|
return result;
|
|
|
|
Fail_1:
|
|
Py_DECREF(result);
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* Helper for filter(): filter a string through a function */
|
|
|
|
static PyObject *
|
|
filterstring(PyObject *func, PyObject *strobj)
|
|
{
|
|
PyObject *result;
|
|
register int i, j;
|
|
int len = PyString_Size(strobj);
|
|
|
|
if (func == Py_None) {
|
|
/* No character is ever false -- share input string */
|
|
Py_INCREF(strobj);
|
|
return strobj;
|
|
}
|
|
if ((result = PyString_FromStringAndSize(NULL, len)) == NULL)
|
|
return NULL;
|
|
|
|
for (i = j = 0; i < len; ++i) {
|
|
PyObject *item, *arg, *good;
|
|
int ok;
|
|
|
|
item = (*strobj->ob_type->tp_as_sequence->sq_item)(strobj, i);
|
|
if (item == NULL)
|
|
goto Fail_1;
|
|
arg = Py_BuildValue("(O)", item);
|
|
Py_DECREF(item);
|
|
if (arg == NULL)
|
|
goto Fail_1;
|
|
good = PyEval_CallObject(func, arg);
|
|
Py_DECREF(arg);
|
|
if (good == NULL)
|
|
goto Fail_1;
|
|
ok = PyObject_IsTrue(good);
|
|
Py_DECREF(good);
|
|
if (ok)
|
|
PyString_AS_STRING((PyStringObject *)result)[j++] =
|
|
PyString_AS_STRING((PyStringObject *)item)[0];
|
|
}
|
|
|
|
if (j < len && _PyString_Resize(&result, j) < 0)
|
|
return NULL;
|
|
|
|
return result;
|
|
|
|
Fail_1:
|
|
Py_DECREF(result);
|
|
return NULL;
|
|
}
|