diff options
| author | orivej <[email protected]> | 2022-02-10 16:44:49 +0300 |
|---|---|---|
| committer | Daniil Cherednik <[email protected]> | 2022-02-10 16:44:49 +0300 |
| commit | 718c552901d703c502ccbefdfc3c9028d608b947 (patch) | |
| tree | 46534a98bbefcd7b1f3faa5b52c138ab27db75b7 /contrib/tools/python3/src/Modules/_bisectmodule.c | |
| parent | e9656aae26e0358d5378e5b63dcac5c8dbe0e4d0 (diff) | |
Restoring authorship annotation for <[email protected]>. Commit 1 of 2.
Diffstat (limited to 'contrib/tools/python3/src/Modules/_bisectmodule.c')
| -rw-r--r-- | contrib/tools/python3/src/Modules/_bisectmodule.c | 290 |
1 files changed, 145 insertions, 145 deletions
diff --git a/contrib/tools/python3/src/Modules/_bisectmodule.c b/contrib/tools/python3/src/Modules/_bisectmodule.c index 82d800d9a87..152e83fd2b5 100644 --- a/contrib/tools/python3/src/Modules/_bisectmodule.c +++ b/contrib/tools/python3/src/Modules/_bisectmodule.c @@ -1,11 +1,11 @@ -/* Bisection algorithms. Drop in replacement for bisect.py - -Converted to C by Dmitry Vasiliev (dima at hlabs.spb.ru). -*/ - -#define PY_SSIZE_T_CLEAN -#include "Python.h" - +/* Bisection algorithms. Drop in replacement for bisect.py + +Converted to C by Dmitry Vasiliev (dima at hlabs.spb.ru). +*/ + +#define PY_SSIZE_T_CLEAN +#include "Python.h" + /*[clinic input] module _bisect [clinic start generated code]*/ @@ -13,44 +13,44 @@ module _bisect #include "clinic/_bisectmodule.c.h" -_Py_IDENTIFIER(insert); - +_Py_IDENTIFIER(insert); + static inline Py_ssize_t -internal_bisect_right(PyObject *list, PyObject *item, Py_ssize_t lo, Py_ssize_t hi) -{ - PyObject *litem; - Py_ssize_t mid; - int res; - - if (lo < 0) { - PyErr_SetString(PyExc_ValueError, "lo must be non-negative"); - return -1; - } - if (hi == -1) { - hi = PySequence_Size(list); - if (hi < 0) - return -1; - } - while (lo < hi) { - /* The (size_t)cast ensures that the addition and subsequent division - are performed as unsigned operations, avoiding difficulties from - signed overflow. (See issue 13496.) */ - mid = ((size_t)lo + hi) / 2; - litem = PySequence_GetItem(list, mid); - if (litem == NULL) - return -1; - res = PyObject_RichCompareBool(item, litem, Py_LT); - Py_DECREF(litem); - if (res < 0) - return -1; - if (res) - hi = mid; - else - lo = mid + 1; - } - return lo; -} - +internal_bisect_right(PyObject *list, PyObject *item, Py_ssize_t lo, Py_ssize_t hi) +{ + PyObject *litem; + Py_ssize_t mid; + int res; + + if (lo < 0) { + PyErr_SetString(PyExc_ValueError, "lo must be non-negative"); + return -1; + } + if (hi == -1) { + hi = PySequence_Size(list); + if (hi < 0) + return -1; + } + while (lo < hi) { + /* The (size_t)cast ensures that the addition and subsequent division + are performed as unsigned operations, avoiding difficulties from + signed overflow. (See issue 13496.) */ + mid = ((size_t)lo + hi) / 2; + litem = PySequence_GetItem(list, mid); + if (litem == NULL) + return -1; + res = PyObject_RichCompareBool(item, litem, Py_LT); + Py_DECREF(litem); + if (res < 0) + return -1; + if (res) + hi = mid; + else + lo = mid + 1; + } + return lo; +} + /*[clinic input] _bisect.bisect_right -> Py_ssize_t @@ -73,13 +73,13 @@ static Py_ssize_t _bisect_bisect_right_impl(PyObject *module, PyObject *a, PyObject *x, Py_ssize_t lo, Py_ssize_t hi) /*[clinic end generated code: output=419e150cf1d2a235 input=e72212b282c83375]*/ -{ +{ return internal_bisect_right(a, x, lo, hi); -} - +} + /*[clinic input] _bisect.insort_right - + a: object x: object lo: Py_ssize_t = 0 @@ -93,65 +93,65 @@ Optional args lo (default 0) and hi (default len(a)) bound the slice of a to be searched. [clinic start generated code]*/ -static PyObject * +static PyObject * _bisect_insort_right_impl(PyObject *module, PyObject *a, PyObject *x, Py_ssize_t lo, Py_ssize_t hi) /*[clinic end generated code: output=c2caa3d4cd02035a input=d1c45bfa68182669]*/ -{ +{ PyObject *result; Py_ssize_t index = internal_bisect_right(a, x, lo, hi); - if (index < 0) - return NULL; + if (index < 0) + return NULL; if (PyList_CheckExact(a)) { if (PyList_Insert(a, index, x) < 0) - return NULL; + return NULL; } else { result = _PyObject_CallMethodId(a, &PyId_insert, "nO", index, x); - if (result == NULL) - return NULL; - Py_DECREF(result); - } - - Py_RETURN_NONE; -} - + if (result == NULL) + return NULL; + Py_DECREF(result); + } + + Py_RETURN_NONE; +} + static inline Py_ssize_t -internal_bisect_left(PyObject *list, PyObject *item, Py_ssize_t lo, Py_ssize_t hi) -{ - PyObject *litem; - Py_ssize_t mid; - int res; - - if (lo < 0) { - PyErr_SetString(PyExc_ValueError, "lo must be non-negative"); - return -1; - } - if (hi == -1) { - hi = PySequence_Size(list); - if (hi < 0) - return -1; - } - while (lo < hi) { - /* The (size_t)cast ensures that the addition and subsequent division - are performed as unsigned operations, avoiding difficulties from - signed overflow. (See issue 13496.) */ - mid = ((size_t)lo + hi) / 2; - litem = PySequence_GetItem(list, mid); - if (litem == NULL) - return -1; - res = PyObject_RichCompareBool(litem, item, Py_LT); - Py_DECREF(litem); - if (res < 0) - return -1; - if (res) - lo = mid + 1; - else - hi = mid; - } - return lo; -} - +internal_bisect_left(PyObject *list, PyObject *item, Py_ssize_t lo, Py_ssize_t hi) +{ + PyObject *litem; + Py_ssize_t mid; + int res; + + if (lo < 0) { + PyErr_SetString(PyExc_ValueError, "lo must be non-negative"); + return -1; + } + if (hi == -1) { + hi = PySequence_Size(list); + if (hi < 0) + return -1; + } + while (lo < hi) { + /* The (size_t)cast ensures that the addition and subsequent division + are performed as unsigned operations, avoiding difficulties from + signed overflow. (See issue 13496.) */ + mid = ((size_t)lo + hi) / 2; + litem = PySequence_GetItem(list, mid); + if (litem == NULL) + return -1; + res = PyObject_RichCompareBool(litem, item, Py_LT); + Py_DECREF(litem); + if (res < 0) + return -1; + if (res) + lo = mid + 1; + else + hi = mid; + } + return lo; +} + /*[clinic input] _bisect.bisect_left -> Py_ssize_t @@ -175,11 +175,11 @@ static Py_ssize_t _bisect_bisect_left_impl(PyObject *module, PyObject *a, PyObject *x, Py_ssize_t lo, Py_ssize_t hi) /*[clinic end generated code: output=af82168bc2856f24 input=2bd90f34afe5609f]*/ -{ +{ return internal_bisect_left(a, x, lo, hi); -} - - +} + + /*[clinic input] _bisect.insort_left @@ -196,59 +196,59 @@ Optional args lo (default 0) and hi (default len(a)) bound the slice of a to be searched. [clinic start generated code]*/ -static PyObject * +static PyObject * _bisect_insort_left_impl(PyObject *module, PyObject *a, PyObject *x, Py_ssize_t lo, Py_ssize_t hi) /*[clinic end generated code: output=9e8356c0844a182b input=bc4583308bce00cc]*/ -{ +{ PyObject *result; Py_ssize_t index = internal_bisect_left(a, x, lo, hi); - if (index < 0) - return NULL; + if (index < 0) + return NULL; if (PyList_CheckExact(a)) { if (PyList_Insert(a, index, x) < 0) - return NULL; - } else { + return NULL; + } else { result = _PyObject_CallMethodId(a, &PyId_insert, "nO", index, x); - if (result == NULL) - return NULL; - Py_DECREF(result); - } - - Py_RETURN_NONE; -} - -static PyMethodDef bisect_methods[] = { + if (result == NULL) + return NULL; + Py_DECREF(result); + } + + Py_RETURN_NONE; +} + +static PyMethodDef bisect_methods[] = { _BISECT_BISECT_RIGHT_METHODDEF _BISECT_INSORT_RIGHT_METHODDEF _BISECT_BISECT_LEFT_METHODDEF _BISECT_INSORT_LEFT_METHODDEF - {NULL, NULL} /* sentinel */ -}; - -PyDoc_STRVAR(module_doc, -"Bisection algorithms.\n\ -\n\ -This module provides support for maintaining a list in sorted order without\n\ -having to sort the list after each insertion. For long lists of items with\n\ -expensive comparison operations, this can be an improvement over the more\n\ -common approach.\n"); - - -static struct PyModuleDef _bisectmodule = { - PyModuleDef_HEAD_INIT, - "_bisect", - module_doc, - -1, - bisect_methods, - NULL, - NULL, - NULL, - NULL -}; - -PyMODINIT_FUNC -PyInit__bisect(void) -{ - return PyModule_Create(&_bisectmodule); -} + {NULL, NULL} /* sentinel */ +}; + +PyDoc_STRVAR(module_doc, +"Bisection algorithms.\n\ +\n\ +This module provides support for maintaining a list in sorted order without\n\ +having to sort the list after each insertion. For long lists of items with\n\ +expensive comparison operations, this can be an improvement over the more\n\ +common approach.\n"); + + +static struct PyModuleDef _bisectmodule = { + PyModuleDef_HEAD_INIT, + "_bisect", + module_doc, + -1, + bisect_methods, + NULL, + NULL, + NULL, + NULL +}; + +PyMODINIT_FUNC +PyInit__bisect(void) +{ + return PyModule_Create(&_bisectmodule); +} |
