githubmirror/cpython

Objects/clinic/structseq.c.h
68 строк2 KB
Michael Droettboom
gh-131525: Cache the result of tuple_hash (#131529)
27 мар 2025, 16:57
27 мар 2025, 16:578614f86
/*[clinic input]
preserve
[clinic start generated code]*/

#if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
#  include "pycore_gc.h"          // PyGC_Head
#  include "pycore_runtime.h"     // _Py_ID()
#endif
#include "pycore_modsupport.h"    // _PyArg_UnpackKeywords()

static PyObject *
structseq_new_impl(PyTypeObject *type, PyObject *arg, PyObject *dict);

static PyObject *
structseq_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
    PyObject *return_value = NULL;
    #if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)

    #define NUM_KEYWORDS 2
    static struct {
        PyGC_Head _this_is_not_used;
        PyObject_VAR_HEAD
        Py_hash_t ob_hash;
        PyObject *ob_item[NUM_KEYWORDS];
    } _kwtuple = {
        .ob_base = PyVarObject_HEAD_INIT(&PyTuple_Type, NUM_KEYWORDS)
        .ob_hash = -1,
        .ob_item = { &_Py_ID(sequence), &_Py_ID(dict), },
    };
    #undef NUM_KEYWORDS
    #define KWTUPLE (&_kwtuple.ob_base.ob_base)

    #else  // !Py_BUILD_CORE
    #  define KWTUPLE NULL
    #endif  // !Py_BUILD_CORE

    static const char * const _keywords[] = {"sequence", "dict", NULL};
    static _PyArg_Parser _parser = {
        .keywords = _keywords,
        .fname = "structseq",
        .kwtuple = KWTUPLE,
    };
    #undef KWTUPLE
    PyObject *argsbuf[2];
    PyObject * const *fastargs;
    Py_ssize_t nargs = PyTuple_GET_SIZE(args);
    Py_ssize_t noptargs = nargs + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - 1;
    PyObject *arg;
    PyObject *dict = NULL;

    fastargs = _PyArg_UnpackKeywords(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser,
            /*minpos*/ 1, /*maxpos*/ 2, /*minkw*/ 0, /*varpos*/ 0, argsbuf);
    if (!fastargs) {
        goto exit;
    }
    arg = fastargs[0];
    if (!noptargs) {
        goto skip_optional_pos;
    }
    dict = fastargs[1];
skip_optional_pos:
    return_value = structseq_new_impl(type, arg, dict);

exit:
    return return_value;
}
/*[clinic end generated code: output=112d59f5e98d652b input=a9049054013a1b77]*/