/* Boolean type, a subtype of int */ #include "Python.h" /* We need to define bool_print to override int_print */ static intbool_print(PyBoolObject *self, FILE *fp, int flags){ fputs(self->ob_ival == 0 ? "False" : "True", fp); return 0;} /* We define bool_repr to return "False" or "True" */ static PyObject *false_str = NULL;static PyObject *true_str = NULL; static PyObject *bool_repr(PyBoolObject *self){ PyObject *s; if (self->ob_ival) s = true_str ? true_str : (true_str = PyString_InternFromString("True")); else s = false_str ? false_str : (false_str = PyString_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){ static char *kwlist[] = {"x", 0}; PyObject *x = Py_False; long ok; if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O:bool", kwlist, &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 PyInt_Type.tp_as_number->nb_and(a, b); return PyBool_FromLong( ((PyBoolObject *)a)->ob_ival & ((PyBoolObject *)b)->ob_ival);} static PyObject *bool_or(PyObject *a, PyObject *b){ if (!PyBool_Check(a) || !PyBool_Check(b)) return PyInt_Type.tp_as_number->nb_or(a, b); return PyBool_FromLong( ((PyBoolObject *)a)->ob_ival | ((PyBoolObject *)b)->ob_ival);} static PyObject *bool_xor(PyObject *a, PyObject *b){ if (!PyBool_Check(a) || !PyBool_Check(b)) return PyInt_Type.tp_as_number->nb_xor(a, b); return PyBool_FromLong( ((PyBoolObject *)a)->ob_ival ^ ((PyBoolObject *)b)->ob_ival);} /* 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_divide */ 0, /* nb_remainder */ 0, /* nb_divmod */ 0, /* nb_power */ 0, /* nb_negative */ 0, /* nb_positive */ 0, /* nb_absolute */ 0, /* nb_nonzero */ 0, /* nb_invert */ 0, /* nb_lshift */ 0, /* nb_rshift */ bool_and, /* nb_and */ bool_xor, /* nb_xor */ bool_or, /* nb_or */ 0, /* nb_coerce */ 0, /* nb_int */ 0, /* nb_long */ 0, /* nb_float */ 0, /* nb_oct */ 0, /* nb_hex */ 0, /* nb_inplace_add */ 0, /* nb_inplace_subtract */ 0, /* nb_inplace_multiply */ 0, /* nb_inplace_divide */ 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 */}; /* The type object for bool. Note that this cannot be subclassed! */ PyTypeObject PyBool_Type = { PyObject_HEAD_INIT(&PyType_Type) 0, "bool", sizeof(PyIntObject), 0, 0, /* tp_dealloc */ (printfunc)bool_print, /* tp_print */ 0, /* tp_getattr */ 0, /* tp_setattr */ 0, /* tp_compare */ (reprfunc)bool_repr, /* tp_repr */ &bool_as_number, /* tp_as_number */ 0, /* tp_as_sequence */ 0, /* tp_as_mapping */ 0, /* tp_hash */ 0, /* tp_call */ (reprfunc)bool_repr, /* tp_str */ 0, /* tp_getattro */ 0, /* tp_setattro */ 0, /* tp_as_buffer */ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_CHECKTYPES, /* 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 */ &PyInt_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 */ /* Named Zero for link-level compatibility */PyIntObject _Py_ZeroStruct = { PyObject_HEAD_INIT(&PyBool_Type) 0}; PyIntObject _Py_TrueStruct = { PyObject_HEAD_INIT(&PyBool_Type) 1};
/* Boolean type, a subtype of int */
#include "Python.h"
/* We need to define bool_print to override int_print */
static int
bool_print(PyBoolObject *self, FILE *fp, int flags)
{
fputs(self->ob_ival == 0 ? "False" : "True", fp);
return 0;
}
/* We define bool_repr to return "False" or "True" */
static PyObject *false_str = NULL;
static PyObject *true_str = NULL;
static PyObject *
bool_repr(PyBoolObject *self)
{
PyObject *s;
if (self->ob_ival)
s = true_str ? true_str :
(true_str = PyString_InternFromString("True"));
else
s = false_str ? false_str :
(false_str = PyString_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)
{
static char *kwlist[] = {"x", 0};
PyObject *x = Py_False;
long ok;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O:bool", kwlist, &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 PyInt_Type.tp_as_number->nb_and(a, b);
return PyBool_FromLong(
((PyBoolObject *)a)->ob_ival & ((PyBoolObject *)b)->ob_ival);
}
static PyObject *
bool_or(PyObject *a, PyObject *b)
{
if (!PyBool_Check(a) || !PyBool_Check(b))
return PyInt_Type.tp_as_number->nb_or(a, b);
return PyBool_FromLong(
((PyBoolObject *)a)->ob_ival | ((PyBoolObject *)b)->ob_ival);
}
static PyObject *
bool_xor(PyObject *a, PyObject *b)
{
if (!PyBool_Check(a) || !PyBool_Check(b))
return PyInt_Type.tp_as_number->nb_xor(a, b);
return PyBool_FromLong(
((PyBoolObject *)a)->ob_ival ^ ((PyBoolObject *)b)->ob_ival);
}
/* 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_divide */
0, /* nb_remainder */
0, /* nb_divmod */
0, /* nb_power */
0, /* nb_negative */
0, /* nb_positive */
0, /* nb_absolute */
0, /* nb_nonzero */
0, /* nb_invert */
0, /* nb_lshift */
0, /* nb_rshift */
bool_and, /* nb_and */
bool_xor, /* nb_xor */
bool_or, /* nb_or */
0, /* nb_coerce */
0, /* nb_int */
0, /* nb_long */
0, /* nb_float */
0, /* nb_oct */
0, /* nb_hex */
0, /* nb_inplace_add */
0, /* nb_inplace_subtract */
0, /* nb_inplace_multiply */
0, /* nb_inplace_divide */
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 */
};
/* The type object for bool. Note that this cannot be subclassed! */
PyTypeObject PyBool_Type = {
PyObject_HEAD_INIT(&PyType_Type)
0,
"bool",
sizeof(PyIntObject),
0,
0, /* tp_dealloc */
(printfunc)bool_print, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
(reprfunc)bool_repr, /* tp_repr */
&bool_as_number, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
(reprfunc)bool_repr, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_CHECKTYPES, /* 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 */
&PyInt_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 */
/* Named Zero for link-level compatibility */
PyIntObject _Py_ZeroStruct = {
PyObject_HEAD_INIT(&PyBool_Type)
0
};
PyIntObject _Py_TrueStruct = {
PyObject_HEAD_INIT(&PyBool_Type)
1
};