#include "Python.h"

PyDoc_STRVAR(operator_doc,

"Operator interface.\n\

\n\

This module exports a set of functions implemented in C corresponding\n\

to the intrinsic operators of Python.  For example, operator.add(x, y)\n\

is equivalent to the expression x+y.  The function names are those\n\

used for special class methods; variants without leading and trailing\n\

'__' are also provided for convenience.");

#define spam1(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a1) { \

  return AOP(a1); }

#define spam2(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \

  PyObject *a1, *a2; \

  if(! PyArg_UnpackTuple(a,#OP,2,2,&a1,&a2)) return NULL; \

  return AOP(a1,a2); }

#define spamoi(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \

  PyObject *a1; int a2; \

  if(! PyArg_ParseTuple(a,"Oi:" #OP,&a1,&a2)) return NULL; \

  return AOP(a1,a2); }

#define spam2n(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \

  PyObject *a1, *a2; \

  if(! PyArg_UnpackTuple(a,#OP,2,2,&a1,&a2)) return NULL; \

  if(-1 == AOP(a1,a2)) return NULL; \

  Py_INCREF(Py_None); \

  return Py_None; }

#define spam3n(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \

  PyObject *a1, *a2, *a3; \

  if(! PyArg_UnpackTuple(a,#OP,3,3,&a1,&a2,&a3)) return NULL; \

  if(-1 == AOP(a1,a2,a3)) return NULL; \

  Py_INCREF(Py_None); \

  return Py_None; }

#define spami(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a1) { \

  long r; \

  if(-1 == (r=AOP(a1))) return NULL; \

  return PyBool_FromLong(r); }

#define spami2(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \

  PyObject *a1, *a2; long r; \

  if(! PyArg_UnpackTuple(a,#OP,2,2,&a1,&a2)) return NULL; \

  if(-1 == (r=AOP(a1,a2))) return NULL; \

  return PyInt_FromLong(r); }

#define spamn2(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \

  PyObject *a1, *a2; Py_ssize_t r; \

  if(! PyArg_UnpackTuple(a,#OP,2,2,&a1,&a2)) return NULL; \

  if(-1 == (r=AOP(a1,a2))) return NULL; \

  return PyInt_FromSsize_t(r); }

#define spami2b(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \

  PyObject *a1, *a2; long r; \

  if(! PyArg_UnpackTuple(a,#OP,2,2,&a1,&a2)) return NULL; \

  if(-1 == (r=AOP(a1,a2))) return NULL; \

  return PyBool_FromLong(r); }

#define spamrc(OP,A) static PyObject *OP(PyObject *s, PyObject *a) { \

  PyObject *a1, *a2; \

  if(! PyArg_UnpackTuple(a,#OP,2,2,&a1,&a2)) return NULL; \

  return PyObject_RichCompare(a1,a2,A); }

spami(isCallable       , PyCallable_Check)

spami(isNumberType     , PyNumber_Check)

spami(truth            , PyObject_IsTrue)

spam2(op_add           , PyNumber_Add)

spam2(op_sub           , PyNumber_Subtract)

spam2(op_mul           , PyNumber_Multiply)

spam2(op_div           , PyNumber_Divide)

spam2(op_floordiv      , PyNumber_FloorDivide)

spam2(op_truediv       , PyNumber_TrueDivide)

spam2(op_mod           , PyNumber_Remainder)

spam1(op_neg           , PyNumber_Negative)

spam1(op_pos           , PyNumber_Positive)

spam1(op_abs           , PyNumber_Absolute)

spam1(op_inv           , PyNumber_Invert)

spam1(op_invert        , PyNumber_Invert)

spam2(op_lshift        , PyNumber_Lshift)

spam2(op_rshift        , PyNumber_Rshift)

spami(op_not_          , PyObject_Not)

spam2(op_and_          , PyNumber_And)

spam2(op_xor           , PyNumber_Xor)

spam2(op_or_           , PyNumber_Or)

spam2(op_iadd          , PyNumber_InPlaceAdd)

spam2(op_isub          , PyNumber_InPlaceSubtract)

spam2(op_imul          , PyNumber_InPlaceMultiply)

spam2(op_idiv          , PyNumber_InPlaceDivide)

spam2(op_ifloordiv     , PyNumber_InPlaceFloorDivide)

spam2(op_itruediv      , PyNumber_InPlaceTrueDivide)

spam2(op_imod          , PyNumber_InPlaceRemainder)

spam2(op_ilshift       , PyNumber_InPlaceLshift)

spam2(op_irshift       , PyNumber_InPlaceRshift)

spam2(op_iand          , PyNumber_InPlaceAnd)

spam2(op_ixor          , PyNumber_InPlaceXor)

spam2(op_ior           , PyNumber_InPlaceOr)

spami(isSequenceType   , PySequence_Check)

spam2(op_concat        , PySequence_Concat)

spamoi(op_repeat       , PySequence_Repeat)

spam2(op_iconcat       , PySequence_InPlaceConcat)

spamoi(op_irepeat      , PySequence_InPlaceRepeat)

spami2b(op_contains     , PySequence_Contains)

spami2b(sequenceIncludes, PySequence_Contains)

spamn2(indexOf         , PySequence_Index)

spamn2(countOf         , PySequence_Count)

spami(isMappingType    , PyMapping_Check)

spam2(op_getitem       , PyObject_GetItem)

spam2n(op_delitem       , PyObject_DelItem)

spam3n(op_setitem      , PyObject_SetItem)

spamrc(op_lt           , Py_LT)

spamrc(op_le           , Py_LE)

spamrc(op_eq           , Py_EQ)

spamrc(op_ne           , Py_NE)

spamrc(op_gt           , Py_GT)

spamrc(op_ge           , Py_GE)

static PyObject*

op_pow(PyObject *s, PyObject *a)

{

	PyObject *a1, *a2;

	if (PyArg_UnpackTuple(a,"pow", 2, 2, &a1, &a2))

		return PyNumber_Power(a1, a2, Py_None);

	return NULL;

}

static PyObject*

op_ipow(PyObject *s, PyObject *a)

{

	PyObject *a1, *a2;

	if (PyArg_UnpackTuple(a,"ipow", 2, 2, &a1, &a2))

		return PyNumber_InPlacePower(a1, a2, Py_None);

	return NULL;

}

static PyObject *

op_index(PyObject *s, PyObject *a)

{

	return PyNumber_Index(a);

}

static PyObject*

is_(PyObject *s, PyObject *a)

{

	PyObject *a1, *a2, *result = NULL;

	if (PyArg_UnpackTuple(a,"is_", 2, 2, &a1, &a2)) {

		result = (a1 == a2) ? Py_True : Py_False;

		Py_INCREF(result);

	}

	return result;

}

static PyObject*

is_not(PyObject *s, PyObject *a)

{

	PyObject *a1, *a2, *result = NULL;

	if (PyArg_UnpackTuple(a,"is_not", 2, 2, &a1, &a2)) {

		result = (a1 != a2) ? Py_True : Py_False;

		Py_INCREF(result);

	}

	return result;

}

static PyObject*

op_getslice(PyObject *s, PyObject *a)

{

        PyObject *a1;

        Py_ssize_t a2, a3;

        if (!PyArg_ParseTuple(a, "Onn:getslice", &a1, &a2, &a3))

                return NULL;

        return PySequence_GetSlice(a1, a2, a3);

}

static PyObject*

op_setslice(PyObject *s, PyObject *a)

{

        PyObject *a1, *a4;

        Py_ssize_t a2, a3;

        if (!PyArg_ParseTuple(a, "OnnO:setslice", &a1, &a2, &a3, &a4))

                return NULL;

        if (-1 == PySequence_SetSlice(a1, a2, a3, a4))

                return NULL;

	Py_RETURN_NONE;

}

static PyObject*

op_delslice(PyObject *s, PyObject *a)

{

        PyObject *a1;

        Py_ssize_t a2, a3;

        if (!PyArg_ParseTuple(a, "Onn:delslice", &a1, &a2, &a3))

                return NULL;

        if (-1 == PySequence_DelSlice(a1, a2, a3))

                return NULL;

	Py_RETURN_NONE;

}

#undef spam1

#undef spam2

#undef spam1o

#undef spam1o

#define spam1(OP,DOC) {#OP, OP, METH_VARARGS, PyDoc_STR(DOC)},

#define spam2(OP,ALTOP,DOC) {#OP, op_##OP, METH_VARARGS, PyDoc_STR(DOC)}, \

			   {#ALTOP, op_##OP, METH_VARARGS, PyDoc_STR(DOC)}, 

#define spam1o(OP,DOC) {#OP, OP, METH_O, PyDoc_STR(DOC)},

#define spam2o(OP,ALTOP,DOC) {#OP, op_##OP, METH_O, PyDoc_STR(DOC)}, \

			   {#ALTOP, op_##OP, METH_O, PyDoc_STR(DOC)}, 

static struct PyMethodDef operator_methods[] = {

spam1o(isCallable,

 "isCallable(a) -- Same as callable(a).")

spam1o(isNumberType,

 "isNumberType(a) -- Return True if a has a numeric type, False otherwise.")

spam1o(isSequenceType,

 "isSequenceType(a) -- Return True if a has a sequence type, False otherwise.")

spam1o(truth,

 "truth(a) -- Return True if a is true, False otherwise.")

spam2(contains,__contains__,

 "contains(a, b) -- Same as b in a (note reversed operands).")

spam1(sequenceIncludes,

 "sequenceIncludes(a, b) -- Same as b in a (note reversed operands; deprecated).")

spam1(indexOf,

 "indexOf(a, b) -- Return the first index of b in a.")

spam1(countOf,

 "countOf(a, b) -- Return the number of times b occurs in a.")

spam1o(isMappingType,

 "isMappingType(a) -- Return True if a has a mapping type, False otherwise.")

spam1(is_, "is_(a, b) -- Same as a is b.")

spam1(is_not, "is_not(a, b) -- Same as a is not b.")

spam2o(index, __index__, "index(a) -- Same as a.__index__()")

spam2(add,__add__, "add(a, b) -- Same as a + b.")

spam2(sub,__sub__, "sub(a, b) -- Same as a - b.")

spam2(mul,__mul__, "mul(a, b) -- Same as a * b.")

spam2(div,__div__, "div(a, b) -- Same as a / b when __future__.division is not in effect.")

spam2(floordiv,__floordiv__, "floordiv(a, b) -- Same as a // b.")

spam2(truediv,__truediv__, "truediv(a, b) -- Same as a / b when __future__.division is in effect.")

spam2(mod,__mod__, "mod(a, b) -- Same as a % b.")

spam2o(neg,__neg__, "neg(a) -- Same as -a.")

spam2o(pos,__pos__, "pos(a) -- Same as +a.")

spam2o(abs,__abs__, "abs(a) -- Same as abs(a).")

spam2o(inv,__inv__, "inv(a) -- Same as ~a.")

spam2o(invert,__invert__, "invert(a) -- Same as ~a.")

spam2(lshift,__lshift__, "lshift(a, b) -- Same as a << b.")

spam2(rshift,__rshift__, "rshift(a, b) -- Same as a >> b.")

spam2o(not_,__not__, "not_(a) -- Same as not a.")

spam2(and_,__and__, "and_(a, b) -- Same as a & b.")

spam2(xor,__xor__, "xor(a, b) -- Same as a ^ b.")

spam2(or_,__or__, "or_(a, b) -- Same as a | b.")

spam2(iadd,__iadd__, "iadd(a, b) -- Same as a += b.")

spam2(isub,__isub__, "isub(a, b) -- Same as a -= b.")

spam2(imul,__imul__, "imul(a, b) -- Same as a *= b.")

spam2(idiv,__idiv__, "idiv(a, b) -- Same as a /= b when __future__.division is not in effect.")

spam2(ifloordiv,__ifloordiv__, "ifloordiv(a, b) -- Same as a //= b.")

spam2(itruediv,__itruediv__, "itruediv(a, b) -- Same as a /= b when __future__.division is in effect.")

spam2(imod,__imod__, "imod(a, b) -- Same as a %= b.")

spam2(ilshift,__ilshift__, "ilshift(a, b) -- Same as a <<= b.")

spam2(irshift,__irshift__, "irshift(a, b) -- Same as a >>= b.")

spam2(iand,__iand__, "iand(a, b) -- Same as a &= b.")

spam2(ixor,__ixor__, "ixor(a, b) -- Same as a ^= b.")

spam2(ior,__ior__, "ior(a, b) -- Same as a |= b.")

spam2(concat,__concat__,

 "concat(a, b) -- Same as a + b, for a and b sequences.")

spam2(repeat,__repeat__,

 "repeat(a, b) -- Return a * b, where a is a sequence, and b is an integer.")

spam2(iconcat,__iconcat__,

 "iconcat(a, b) -- Same as a += b, for a and b sequences.")

spam2(irepeat,__irepeat__,

 "irepeat(a, b) -- Same as a *= b, where a is a sequence, and b is an integer.")

spam2(getitem,__getitem__,

 "getitem(a, b) -- Same as a[b].")

spam2(setitem,__setitem__,

 "setitem(a, b, c) -- Same as a[b] = c.")

spam2(delitem,__delitem__,

 "delitem(a, b) -- Same as del a[b].")

spam2(pow,__pow__, "pow(a, b) -- Same as a ** b.")

spam2(ipow,__ipow__, "ipow(a, b) -- Same as a **= b.")

spam2(getslice,__getslice__,

 "getslice(a, b, c) -- Same as a[b:c].")

spam2(setslice,__setslice__,

"setslice(a, b, c, d) -- Same as a[b:c] = d.")

spam2(delslice,__delslice__,

"delslice(a, b, c) -- Same as del a[b:c].")

spam2(lt,__lt__, "lt(a, b) -- Same as a<b.")

spam2(le,__le__, "le(a, b) -- Same as a<=b.")

spam2(eq,__eq__, "eq(a, b) -- Same as a==b.")

spam2(ne,__ne__, "ne(a, b) -- Same as a!=b.")

spam2(gt,__gt__, "gt(a, b) -- Same as a>b.")

spam2(ge,__ge__, "ge(a, b) -- Same as a>=b.")

	{NULL,		NULL}		/* sentinel */

};

/* itemgetter object **********************************************************/

typedef struct {

	PyObject_HEAD

	Py_ssize_t nitems;

	PyObject *item;

} itemgetterobject;

static PyTypeObject itemgetter_type;

static PyObject *

itemgetter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)

{

	itemgetterobject *ig;

	PyObject *item;

	Py_ssize_t nitems;

	if (!_PyArg_NoKeywords("itemgetter()", kwds))

		return NULL;

	nitems = PyTuple_GET_SIZE(args);

	if (nitems <= 1) {

		if (!PyArg_UnpackTuple(args, "itemgetter", 1, 1, &item))

			return NULL;

	} else 

		item = args;

	/* create itemgetterobject structure */

	ig = PyObject_GC_New(itemgetterobject, &itemgetter_type);

	if (ig == NULL) 

		return NULL;	

	Py_INCREF(item);

	ig->item = item;

	ig->nitems = nitems;

	PyObject_GC_Track(ig);

	return (PyObject *)ig;

}

static void

itemgetter_dealloc(itemgetterobject *ig)

{

	PyObject_GC_UnTrack(ig);

	Py_XDECREF(ig->item);

	PyObject_GC_Del(ig);

}

static int

itemgetter_traverse(itemgetterobject *ig, visitproc visit, void *arg)

{

	Py_VISIT(ig->item);

	return 0;

}

static PyObject *

itemgetter_call(itemgetterobject *ig, PyObject *args, PyObject *kw)

{

	PyObject *obj, *result;

	Py_ssize_t i, nitems=ig->nitems;

	if (!PyArg_UnpackTuple(args, "itemgetter", 1, 1, &obj))

		return NULL;

	if (nitems == 1)

		return PyObject_GetItem(obj, ig->item);

	assert(PyTuple_Check(ig->item));

	assert(PyTuple_GET_SIZE(ig->item) == nitems);

	result = PyTuple_New(nitems);

	if (result == NULL)

		return NULL;

	for (i=0 ; i < nitems ; i++) {

		PyObject *item, *val;

		item = PyTuple_GET_ITEM(ig->item, i);

		val = PyObject_GetItem(obj, item);

		if (val == NULL) {

			Py_DECREF(result);

			return NULL;

		}

		PyTuple_SET_ITEM(result, i, val);

	}

	return result;

}

PyDoc_STRVAR(itemgetter_doc,

"itemgetter(item, ...) --> itemgetter object\n\

\n\

Return a callable object that fetches the given item(s) from its operand.\n\

After, f=itemgetter(2), the call f(r) returns r[2].\n\

After, g=itemgetter(2,5,3), the call g(r) returns (r[2], r[5], r[3])");

static PyTypeObject itemgetter_type = {

	PyVarObject_HEAD_INIT(NULL, 0)

	"operator.itemgetter",		/* tp_name */

	sizeof(itemgetterobject),	/* tp_basicsize */

	0,				/* tp_itemsize */

	/* methods */

	(destructor)itemgetter_dealloc,	/* tp_dealloc */

	0,				/* tp_print */

	0,				/* tp_getattr */

	0,				/* tp_setattr */

	0,				/* tp_compare */

	0,				/* tp_repr */

	0,				/* tp_as_number */

	0,				/* tp_as_sequence */

	0,				/* tp_as_mapping */

	0,				/* tp_hash */

	(ternaryfunc)itemgetter_call,	/* tp_call */

	0,				/* tp_str */

	PyObject_GenericGetAttr,	/* tp_getattro */

	0,				/* tp_setattro */

	0,				/* tp_as_buffer */

	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,	/* tp_flags */

	itemgetter_doc,			/* tp_doc */

	(traverseproc)itemgetter_traverse,	/* 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 */

	0,				/* tp_base */

	0,				/* tp_dict */

	0,				/* tp_descr_get */

	0,				/* tp_descr_set */

	0,				/* tp_dictoffset */

	0,				/* tp_init */

	0,				/* tp_alloc */

	itemgetter_new,			/* tp_new */

	0,				/* tp_free */

};

/* attrgetter object **********************************************************/

typedef struct {

	PyObject_HEAD

	Py_ssize_t nattrs;

	PyObject *attr;

} attrgetterobject;

static PyTypeObject attrgetter_type;

static PyObject *

attrgetter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)

{

	attrgetterobject *ag;

	PyObject *attr;

	Py_ssize_t nattrs;

	if (!_PyArg_NoKeywords("attrgetter()", kwds))

		return NULL;

	nattrs = PyTuple_GET_SIZE(args);

	if (nattrs <= 1) {

		if (!PyArg_UnpackTuple(args, "attrgetter", 1, 1, &attr))

			return NULL;

	} else 

		attr = args;

	/* create attrgetterobject structure */

	ag = PyObject_GC_New(attrgetterobject, &attrgetter_type);

	if (ag == NULL) 

		return NULL;	

	Py_INCREF(attr);

	ag->attr = attr;

	ag->nattrs = nattrs;

	PyObject_GC_Track(ag);

	return (PyObject *)ag;

}

static void

attrgetter_dealloc(attrgetterobject *ag)

{

	PyObject_GC_UnTrack(ag);

	Py_XDECREF(ag->attr);

	PyObject_GC_Del(ag);

}

static int

attrgetter_traverse(attrgetterobject *ag, visitproc visit, void *arg)

{

	Py_VISIT(ag->attr);

	return 0;

}

static PyObject *

dotted_getattr(PyObject *obj, PyObject *attr)

{

	char *s, *p;

#ifdef Py_USING_UNICODE

	if (PyUnicode_Check(attr)) {

		attr = _PyUnicode_AsDefaultEncodedString(attr, NULL);

		if (attr == NULL)

			return NULL;

	}

#endif

	if (!PyString_Check(attr)) {

		PyErr_SetString(PyExc_TypeError,

				"attribute name must be a string");

		return NULL;

	}

	s = PyString_AS_STRING(attr);

	Py_INCREF(obj);

	for (;;) {

		PyObject *newobj, *str;

		p = strchr(s, '.');

		str = p ? PyString_FromStringAndSize(s, (p-s)) : 

			  PyString_FromString(s);

		if (str == NULL) {

			Py_DECREF(obj);

			return NULL;

		}

		newobj = PyObject_GetAttr(obj, str);