/src/Python-3.8.3/Objects/boolobject.c

Source
/* Boolean type, a subtype of int */

#include "Python.h"
#include "longintrepr.h"

/* We define bool_repr to return "False" or "True" */

static PyObject *false_str = NULL;
static PyObject *true_str = NULL;

static PyObject *
bool_repr(PyObject *self)
{
    PyObject *s;

    if (self == Py_True)
        s = true_str ? true_str :
            (true_str = PyUnicode_InternFromString("True"));
    else
        s = false_str ? false_str :
            (false_str = PyUnicode_InternFromString("False"));
    Py_XINCREF(s);
    return s;
}

/* Function to return a bool from a C long */

PyObject *PyBool_FromLong(long ok)
{
    PyObject *result;

    if (ok)
        result = Py_True;
    else
        result = Py_False;
    Py_INCREF(result);
    return result;
}

/* 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);
}

/* Arithmetic operations redefined to return bool if both args are bool. */

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 */
    0,                          /* 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 */
};

/* The type object for bool.  Note that this cannot be subclassed! */

PyTypeObject PyBool_Type = {
    PyVarObject_HEAD_INIT(&PyType_Type, 0)
    "bool",
    sizeof(struct _longobject),
    0,
    0,                                          /* 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 */
};

/* The objects representing bool values False and True */

struct _longobject _Py_FalseStruct = {
    PyVarObject_HEAD_INIT(&PyBool_Type, 0)
    { 0 }
};

struct _longobject _Py_TrueStruct = {
    PyVarObject_HEAD_INIT(&PyBool_Type, 1)
    { 1 }
};

Line	Count	Source
1		/* Boolean type, a subtype of int */
2
3		#include "Python.h"
4		#include "longintrepr.h"
5
6		/* We define bool_repr to return "False" or "True" */
7
8		static PyObject *false_str = NULL;
9		static PyObject *true_str = NULL;
10
11		static PyObject *
12		bool_repr(PyObject *self)
13	0	{
14	0	PyObject *s;
15
16	0	if (self == Py_True)
17	0	s = true_str ? true_str :
18	0	(true_str = PyUnicode_InternFromString("True"));
19	0	else
20	0	s = false_str ? false_str :
21	0	(false_str = PyUnicode_InternFromString("False"));
22	0	Py_XINCREF(s);
23	0	return s;
24	0	}
25
26		/* Function to return a bool from a C long */
27
28		PyObject *PyBool_FromLong(long ok)
29	119k	{
30	119k	PyObject *result;
31
32	119k	if (ok)
33	90.9k	result = Py_True;
34	28.7k	else
35	28.7k	result = Py_False;
36	119k	Py_INCREF(result);
37	119k	return result;
38	119k	}
39
40		/* We define bool_new to always return either Py_True or Py_False */
41
42		static PyObject *
43		bool_new(PyTypeObject type, PyObject args, PyObject *kwds)
44	2	{
45	2	PyObject *x = Py_False;
46	2	long ok;
47
48	2	if (!_PyArg_NoKeywords("bool", kwds))
49	0	return NULL;
50	2	if (!PyArg_UnpackTuple(args, "bool", 0, 1, &x))
51	0	return NULL;
52	2	ok = PyObject_IsTrue(x);
53	2	if (ok < 0)
54	0	return NULL;
55	2	return PyBool_FromLong(ok);
56	2	}
57
58		/* Arithmetic operations redefined to return bool if both args are bool. */
59
60		static PyObject *
61		bool_and(PyObject a, PyObject b)
62	0	{
63	0	if (!PyBool_Check(a) \|\| !PyBool_Check(b))
64	0	return PyLong_Type.tp_as_number->nb_and(a, b);
65	0	return PyBool_FromLong((a == Py_True) & (b == Py_True));
66	0	}
67
68		static PyObject *
69		bool_or(PyObject a, PyObject b)
70	0	{
71	0	if (!PyBool_Check(a) \|\| !PyBool_Check(b))
72	0	return PyLong_Type.tp_as_number->nb_or(a, b);
73	0	return PyBool_FromLong((a == Py_True) \| (b == Py_True));
74	0	}
75
76		static PyObject *
77		bool_xor(PyObject a, PyObject b)
78	0	{
79	0	if (!PyBool_Check(a) \|\| !PyBool_Check(b))
80	0	return PyLong_Type.tp_as_number->nb_xor(a, b);
81	0	return PyBool_FromLong((a == Py_True) ^ (b == Py_True));
82	0	}
83
84		/* Doc string */
85
86		PyDoc_STRVAR(bool_doc,
87		"bool(x) -> bool\n\
88		\n\
89		Returns True when the argument x is true, False otherwise.\n\
90		The builtins True and False are the only two instances of the class bool.\n\
91		The class bool is a subclass of the class int, and cannot be subclassed.");
92
93		/* Arithmetic methods -- only so we can override &, \|, ^. */
94
95		static PyNumberMethods bool_as_number = {
96		0, /* nb_add */
97		0, /* nb_subtract */
98		0, /* nb_multiply */
99		0, /* nb_remainder */
100		0, /* nb_divmod */
101		0, /* nb_power */
102		0, /* nb_negative */
103		0, /* nb_positive */
104		0, /* nb_absolute */
105		0, /* nb_bool */
106		0, /* nb_invert */
107		0, /* nb_lshift */
108		0, /* nb_rshift */
109		bool_and, /* nb_and */
110		bool_xor, /* nb_xor */
111		bool_or, /* nb_or */
112		0, /* nb_int */
113		0, /* nb_reserved */
114		0, /* nb_float */
115		0, /* nb_inplace_add */
116		0, /* nb_inplace_subtract */
117		0, /* nb_inplace_multiply */
118		0, /* nb_inplace_remainder */
119		0, /* nb_inplace_power */
120		0, /* nb_inplace_lshift */
121		0, /* nb_inplace_rshift */
122		0, /* nb_inplace_and */
123		0, /* nb_inplace_xor */
124		0, /* nb_inplace_or */
125		0, /* nb_floor_divide */
126		0, /* nb_true_divide */
127		0, /* nb_inplace_floor_divide */
128		0, /* nb_inplace_true_divide */
129		0, /* nb_index */
130		};
131
132		/* The type object for bool. Note that this cannot be subclassed! */
133
134		PyTypeObject PyBool_Type = {
135		PyVarObject_HEAD_INIT(&PyType_Type, 0)
136		"bool",
137		sizeof(struct _longobject),
138		0,
139		0, /* tp_dealloc */
140		0, /* tp_vectorcall_offset */
141		0, /* tp_getattr */
142		0, /* tp_setattr */
143		0, /* tp_as_async */
144		bool_repr, /* tp_repr */
145		&bool_as_number, /* tp_as_number */
146		0, /* tp_as_sequence */
147		0, /* tp_as_mapping */
148		0, /* tp_hash */
149		0, /* tp_call */
150		0, /* tp_str */
151		0, /* tp_getattro */
152		0, /* tp_setattro */
153		0, /* tp_as_buffer */
154		Py_TPFLAGS_DEFAULT, /* tp_flags */
155		bool_doc, /* tp_doc */
156		0, /* tp_traverse */
157		0, /* tp_clear */
158		0, /* tp_richcompare */
159		0, /* tp_weaklistoffset */
160		0, /* tp_iter */
161		0, /* tp_iternext */
162		0, /* tp_methods */
163		0, /* tp_members */
164		0, /* tp_getset */
165		&PyLong_Type, /* tp_base */
166		0, /* tp_dict */
167		0, /* tp_descr_get */
168		0, /* tp_descr_set */
169		0, /* tp_dictoffset */
170		0, /* tp_init */
171		0, /* tp_alloc */
172		bool_new, /* tp_new */
173		};
174
175		/* The objects representing bool values False and True */
176
177		struct _longobject _Py_FalseStruct = {
178		PyVarObject_HEAD_INIT(&PyBool_Type, 0)
179		{ 0 }
180		};
181
182		struct _longobject _Py_TrueStruct = {
183		PyVarObject_HEAD_INIT(&PyBool_Type, 1)
184		{ 1 }
185		};

Coverage Report

Created: 2025-10-27 06:40