Library import 16 (#2433)

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1 files changed, 226 insertions, 0 deletions

diff --git a/contrib/tools/python3/Objects/boolobject.c b/contrib/tools/python3/Objects/boolobject.c
new file mode 100644
index 0000000000..f43e26f3f2
--- /dev/null
+++ b/contrib/tools/python3/Objects/boolobject.c
@@ -0,0 +1,226 @@
+/* Boolean type, a subtype of int */
+
+#include "Python.h"
+#include "pycore_object.h"      // _Py_FatalRefcountError()
+#include "pycore_long.h"        // FALSE_TAG TRUE_TAG
+#include "pycore_runtime.h"       // _Py_ID()
+
+#include <stddef.h>
+
+/* We define bool_repr to return "False" or "True" */
+
+static PyObject *
+bool_repr(PyObject *self)
+{
+    PyObject *res = self == Py_True ? &_Py_ID(True) : &_Py_ID(False);
+    return Py_NewRef(res);
+}
+
+/* Function to return a bool from a C long */
+
+PyObject *PyBool_FromLong(long ok)
+{
+    return ok ? Py_True : Py_False;
+}
+
+/* We define bool_new to always return either Py_True or Py_False */
+
+static PyObject *
+bool_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+    PyObject *x = Py_False;
+    long ok;
+
+    if (!_PyArg_NoKeywords("bool", kwds))
+        return NULL;
+    if (!PyArg_UnpackTuple(args, "bool", 0, 1, &x))
+        return NULL;
+    ok = PyObject_IsTrue(x);
+    if (ok < 0)
+        return NULL;
+    return PyBool_FromLong(ok);
+}
+
+static PyObject *
+bool_vectorcall(PyObject *type, PyObject * const*args,
+                size_t nargsf, PyObject *kwnames)
+{
+    long ok = 0;
+    if (!_PyArg_NoKwnames("bool", kwnames)) {
+        return NULL;
+    }
+
+    Py_ssize_t nargs = PyVectorcall_NARGS(nargsf);
+    if (!_PyArg_CheckPositional("bool", nargs, 0, 1)) {
+        return NULL;
+    }
+
+    assert(PyType_Check(type));
+    if (nargs) {
+        ok = PyObject_IsTrue(args[0]);
+        if (ok < 0) {
+            return NULL;
+        }
+    }
+    return PyBool_FromLong(ok);
+}
+
+/* Arithmetic operations redefined to return bool if both args are bool. */
+
+static PyObject *
+bool_invert(PyObject *v)
+{
+    if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                     "Bitwise inversion '~' on bool is deprecated. This "
+                     "returns the bitwise inversion of the underlying int "
+                     "object and is usually not what you expect from negating "
+                     "a bool. Use the 'not' operator for boolean negation or "
+                     "~int(x) if you really want the bitwise inversion of the "
+                     "underlying int.",
+                     1) < 0) {
+        return NULL;
+    }
+    return PyLong_Type.tp_as_number->nb_invert(v);
+}
+
+static PyObject *
+bool_and(PyObject *a, PyObject *b)
+{
+    if (!PyBool_Check(a) || !PyBool_Check(b))
+        return PyLong_Type.tp_as_number->nb_and(a, b);
+    return PyBool_FromLong((a == Py_True) & (b == Py_True));
+}
+
+static PyObject *
+bool_or(PyObject *a, PyObject *b)
+{
+    if (!PyBool_Check(a) || !PyBool_Check(b))
+        return PyLong_Type.tp_as_number->nb_or(a, b);
+    return PyBool_FromLong((a == Py_True) | (b == Py_True));
+}
+
+static PyObject *
+bool_xor(PyObject *a, PyObject *b)
+{
+    if (!PyBool_Check(a) || !PyBool_Check(b))
+        return PyLong_Type.tp_as_number->nb_xor(a, b);
+    return PyBool_FromLong((a == Py_True) ^ (b == Py_True));
+}
+
+/* Doc string */
+
+PyDoc_STRVAR(bool_doc,
+"bool(x) -> bool\n\
+\n\
+Returns True when the argument x is true, False otherwise.\n\
+The builtins True and False are the only two instances of the class bool.\n\
+The class bool is a subclass of the class int, and cannot be subclassed.");
+
+/* Arithmetic methods -- only so we can override &, |, ^. */
+
+static PyNumberMethods bool_as_number = {
+    0,                          /* nb_add */
+    0,                          /* nb_subtract */
+    0,                          /* nb_multiply */
+    0,                          /* nb_remainder */
+    0,                          /* nb_divmod */
+    0,                          /* nb_power */
+    0,                          /* nb_negative */
+    0,                          /* nb_positive */
+    0,                          /* nb_absolute */
+    0,                          /* nb_bool */
+    (unaryfunc)bool_invert,     /* nb_invert */
+    0,                          /* nb_lshift */
+    0,                          /* nb_rshift */
+    bool_and,                   /* nb_and */
+    bool_xor,                   /* nb_xor */
+    bool_or,                    /* nb_or */
+    0,                          /* nb_int */
+    0,                          /* nb_reserved */
+    0,                          /* nb_float */
+    0,                          /* nb_inplace_add */
+    0,                          /* nb_inplace_subtract */
+    0,                          /* nb_inplace_multiply */
+    0,                          /* nb_inplace_remainder */
+    0,                          /* nb_inplace_power */
+    0,                          /* nb_inplace_lshift */
+    0,                          /* nb_inplace_rshift */
+    0,                          /* nb_inplace_and */
+    0,                          /* nb_inplace_xor */
+    0,                          /* nb_inplace_or */
+    0,                          /* nb_floor_divide */
+    0,                          /* nb_true_divide */
+    0,                          /* nb_inplace_floor_divide */
+    0,                          /* nb_inplace_true_divide */
+    0,                          /* nb_index */
+};
+
+static void
+bool_dealloc(PyObject *boolean)
+{
+    /* This should never get called, but we also don't want to SEGV if
+     * we accidentally decref Booleans out of existence. Instead,
+     * since bools are immortal, re-set the reference count.
+     */
+    _Py_SetImmortal(boolean);
+}
+
+/* The type object for bool.  Note that this cannot be subclassed! */
+
+PyTypeObject PyBool_Type = {
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    "bool",
+    offsetof(struct _longobject, long_value.ob_digit),  /* tp_basicsize */
+    sizeof(digit),                              /* tp_itemsize */
+    bool_dealloc,                               /* tp_dealloc */
+    0,                                          /* tp_vectorcall_offset */
+    0,                                          /* tp_getattr */
+    0,                                          /* tp_setattr */
+    0,                                          /* tp_as_async */
+    bool_repr,                                  /* tp_repr */
+    &bool_as_number,                            /* tp_as_number */
+    0,                                          /* tp_as_sequence */
+    0,                                          /* tp_as_mapping */
+    0,                                          /* tp_hash */
+    0,                                          /* tp_call */
+    0,                                          /* tp_str */
+    0,                                          /* tp_getattro */
+    0,                                          /* tp_setattro */
+    0,                                          /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT,                         /* tp_flags */
+    bool_doc,                                   /* tp_doc */
+    0,                                          /* tp_traverse */
+    0,                                          /* tp_clear */
+    0,                                          /* tp_richcompare */
+    0,                                          /* tp_weaklistoffset */
+    0,                                          /* tp_iter */
+    0,                                          /* tp_iternext */
+    0,                                          /* tp_methods */
+    0,                                          /* tp_members */
+    0,                                          /* tp_getset */
+    &PyLong_Type,                               /* tp_base */
+    0,                                          /* tp_dict */
+    0,                                          /* tp_descr_get */
+    0,                                          /* tp_descr_set */
+    0,                                          /* tp_dictoffset */
+    0,                                          /* tp_init */
+    0,                                          /* tp_alloc */
+    bool_new,                                   /* tp_new */
+    .tp_vectorcall = bool_vectorcall,
+};
+
+/* The objects representing bool values False and True */
+
+struct _longobject _Py_FalseStruct = {
+    PyObject_HEAD_INIT(&PyBool_Type)
+    { .lv_tag = _PyLong_FALSE_TAG,
+        { 0 }
+    }
+};
+
+struct _longobject _Py_TrueStruct = {
+    PyObject_HEAD_INIT(&PyBool_Type)
+    { .lv_tag = _PyLong_TRUE_TAG,
+        { 1 }
+    }
+};