mirror of https://github.com/python/cpython
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/*[clinic input]
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preserve
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[clinic start generated code]*/
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#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
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# include "pycore_gc.h" // PyGC_Head
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# include "pycore_runtime.h" // _Py_ID()
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#endif
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#include "pycore_modsupport.h" // _PyArg_UnpackKeywords()
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PyDoc_STRVAR(enum_new__doc__,
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"enumerate(iterable, start=0)\n"
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"--\n"
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"\n"
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"Return an enumerate object.\n"
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"\n"
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" iterable\n"
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" an object supporting iteration\n"
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"\n"
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"The enumerate object yields pairs containing a count (from start, which\n"
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"defaults to zero) and a value yielded by the iterable argument.\n"
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"\n"
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"enumerate is useful for obtaining an indexed list:\n"
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" (0, seq[0]), (1, seq[1]), (2, seq[2]), ...");
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static PyObject *
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enum_new_impl(PyTypeObject *type, PyObject *iterable, PyObject *start);
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static PyObject *
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enum_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
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{
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PyObject *return_value = NULL;
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#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
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#define NUM_KEYWORDS 2
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static struct {
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PyGC_Head _this_is_not_used;
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PyObject_VAR_HEAD
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PyObject *ob_item[NUM_KEYWORDS];
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} _kwtuple = {
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.ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
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.ob_item = { &_Py_ID(iterable), &_Py_ID(start), },
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};
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#undef NUM_KEYWORDS
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#define KWTUPLE (&_kwtuple.ob_base.ob_base)
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#else // !Py_BUILD_CORE
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# define KWTUPLE NULL
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#endif // !Py_BUILD_CORE
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static const char * const _keywords[] = {"iterable", "start", NULL};
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static _PyArg_Parser _parser = {
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.keywords = _keywords,
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.fname = "enumerate",
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.kwtuple = KWTUPLE,
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};
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#undef KWTUPLE
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PyObject *argsbuf[2];
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PyObject * const *fastargs;
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Py_ssize_t nargs = PyTuple_GET_SIZE(args);
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Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
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PyObject *iterable;
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PyObject *start = 0;
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fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
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/*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
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if (!fastargs) {
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goto exit;
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}
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iterable = fastargs[0];
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if (!noptargs) {
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goto skip_optional_pos;
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}
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start = fastargs[1];
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skip_optional_pos:
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return_value = enum_new_impl(type, iterable, start);
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exit:
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return return_value;
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}
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PyDoc_STRVAR(reversed_new__doc__,
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"reversed(sequence, /)\n"
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"--\n"
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"\n"
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"Return a reverse iterator over the values of the given sequence.");
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static PyObject *
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reversed_new_impl(PyTypeObject *type, PyObject *seq);
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static PyObject *
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reversed_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
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{
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PyObject *return_value = NULL;
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PyTypeObject *base_tp = &PyReversed_Type;
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PyObject *seq;
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if ((type == base_tp || type->tp_init == base_tp->tp_init) &&
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!_PyArg_NoKeywords("reversed", kwargs)) {
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goto exit;
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}
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if (!_PyArg_CheckPositional("reversed", PyTuple_GET_SIZE(args), 1, 1)) {
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goto exit;
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}
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seq = PyTuple_GET_ITEM(args, 0);
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return_value = reversed_new_impl(type, seq);
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exit:
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return return_value;
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}
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/*[clinic end generated code: output=2e339ade8bedb3a0 input=a9049054013a1b77]*/
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