mirror of
https://github.com/python/cpython.git
synced 2024-12-01 11:15:56 +01:00
4cc0f24857
PyUnicode_AsStringAndSize -> _PyUnicode_AsStringAndSize to mark them for interpreter internal use only. We'll have to rework these APIs or create new ones for the purpose of accessing the UTF-8 representation of Unicode objects for 3.1.
732 lines
20 KiB
C
732 lines
20 KiB
C
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#include "Python.h"
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PyDoc_STRVAR(operator_doc,
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"Operator interface.\n\
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\n\
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This module exports a set of functions implemented in C corresponding\n\
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to the intrinsic operators of Python. For example, operator.add(x, y)\n\
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is equivalent to the expression x+y. The function names are those\n\
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used for special class methods; variants without leading and trailing\n\
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'__' are also provided for convenience.");
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#define spam1(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a1) { \
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return AOP(a1); }
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#define spam2(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \
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PyObject *a1, *a2; \
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if(! PyArg_UnpackTuple(a,#OP,2,2,&a1,&a2)) return NULL; \
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return AOP(a1,a2); }
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#define spamoi(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \
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PyObject *a1; int a2; \
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if(! PyArg_ParseTuple(a,"Oi:" #OP,&a1,&a2)) return NULL; \
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return AOP(a1,a2); }
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#define spam2n(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \
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PyObject *a1, *a2; \
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if(! PyArg_UnpackTuple(a,#OP,2,2,&a1,&a2)) return NULL; \
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if(-1 == AOP(a1,a2)) return NULL; \
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Py_INCREF(Py_None); \
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return Py_None; }
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#define spam3n(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \
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PyObject *a1, *a2, *a3; \
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if(! PyArg_UnpackTuple(a,#OP,3,3,&a1,&a2,&a3)) return NULL; \
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if(-1 == AOP(a1,a2,a3)) return NULL; \
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Py_INCREF(Py_None); \
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return Py_None; }
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#define spami(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a1) { \
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long r; \
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if(-1 == (r=AOP(a1))) return NULL; \
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return PyBool_FromLong(r); }
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#define spami2(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \
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PyObject *a1, *a2; long r; \
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if(! PyArg_UnpackTuple(a,#OP,2,2,&a1,&a2)) return NULL; \
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if(-1 == (r=AOP(a1,a2))) return NULL; \
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return PyLong_FromLong(r); }
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#define spamn2(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \
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PyObject *a1, *a2; Py_ssize_t r; \
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if(! PyArg_UnpackTuple(a,#OP,2,2,&a1,&a2)) return NULL; \
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if(-1 == (r=AOP(a1,a2))) return NULL; \
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return PyLong_FromSsize_t(r); }
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#define spami2b(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \
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PyObject *a1, *a2; long r; \
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if(! PyArg_UnpackTuple(a,#OP,2,2,&a1,&a2)) return NULL; \
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if(-1 == (r=AOP(a1,a2))) return NULL; \
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return PyBool_FromLong(r); }
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#define spamrc(OP,A) static PyObject *OP(PyObject *s, PyObject *a) { \
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PyObject *a1, *a2; \
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if(! PyArg_UnpackTuple(a,#OP,2,2,&a1,&a2)) return NULL; \
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return PyObject_RichCompare(a1,a2,A); }
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spami(isNumberType , PyNumber_Check)
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spami(truth , PyObject_IsTrue)
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spam2(op_add , PyNumber_Add)
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spam2(op_sub , PyNumber_Subtract)
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spam2(op_mul , PyNumber_Multiply)
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spam2(op_floordiv , PyNumber_FloorDivide)
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spam2(op_truediv , PyNumber_TrueDivide)
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spam2(op_mod , PyNumber_Remainder)
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spam1(op_neg , PyNumber_Negative)
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spam1(op_pos , PyNumber_Positive)
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spam1(op_abs , PyNumber_Absolute)
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spam1(op_inv , PyNumber_Invert)
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spam1(op_invert , PyNumber_Invert)
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spam2(op_lshift , PyNumber_Lshift)
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spam2(op_rshift , PyNumber_Rshift)
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spami(op_not_ , PyObject_Not)
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spam2(op_and_ , PyNumber_And)
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spam2(op_xor , PyNumber_Xor)
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spam2(op_or_ , PyNumber_Or)
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spam2(op_iadd , PyNumber_InPlaceAdd)
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spam2(op_isub , PyNumber_InPlaceSubtract)
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spam2(op_imul , PyNumber_InPlaceMultiply)
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spam2(op_ifloordiv , PyNumber_InPlaceFloorDivide)
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spam2(op_itruediv , PyNumber_InPlaceTrueDivide)
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spam2(op_imod , PyNumber_InPlaceRemainder)
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spam2(op_ilshift , PyNumber_InPlaceLshift)
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spam2(op_irshift , PyNumber_InPlaceRshift)
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spam2(op_iand , PyNumber_InPlaceAnd)
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spam2(op_ixor , PyNumber_InPlaceXor)
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spam2(op_ior , PyNumber_InPlaceOr)
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spami(isSequenceType , PySequence_Check)
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spam2(op_concat , PySequence_Concat)
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spamoi(op_repeat , PySequence_Repeat)
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spam2(op_iconcat , PySequence_InPlaceConcat)
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spamoi(op_irepeat , PySequence_InPlaceRepeat)
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spami2b(op_contains , PySequence_Contains)
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spamn2(indexOf , PySequence_Index)
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spamn2(countOf , PySequence_Count)
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spami(isMappingType , PyMapping_Check)
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spam2(op_getitem , PyObject_GetItem)
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spam2n(op_delitem , PyObject_DelItem)
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spam3n(op_setitem , PyObject_SetItem)
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spamrc(op_lt , Py_LT)
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spamrc(op_le , Py_LE)
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spamrc(op_eq , Py_EQ)
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spamrc(op_ne , Py_NE)
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spamrc(op_gt , Py_GT)
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spamrc(op_ge , Py_GE)
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static PyObject*
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op_pow(PyObject *s, PyObject *a)
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{
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PyObject *a1, *a2;
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if (PyArg_UnpackTuple(a,"pow", 2, 2, &a1, &a2))
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return PyNumber_Power(a1, a2, Py_None);
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return NULL;
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}
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static PyObject*
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op_ipow(PyObject *s, PyObject *a)
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{
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PyObject *a1, *a2;
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if (PyArg_UnpackTuple(a,"ipow", 2, 2, &a1, &a2))
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return PyNumber_InPlacePower(a1, a2, Py_None);
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return NULL;
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}
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static PyObject *
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op_index(PyObject *s, PyObject *a)
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{
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return PyNumber_Index(a);
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}
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static PyObject*
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is_(PyObject *s, PyObject *a)
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{
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PyObject *a1, *a2, *result = NULL;
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if (PyArg_UnpackTuple(a,"is_", 2, 2, &a1, &a2)) {
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result = (a1 == a2) ? Py_True : Py_False;
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Py_INCREF(result);
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}
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return result;
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}
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static PyObject*
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is_not(PyObject *s, PyObject *a)
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{
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PyObject *a1, *a2, *result = NULL;
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if (PyArg_UnpackTuple(a,"is_not", 2, 2, &a1, &a2)) {
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result = (a1 != a2) ? Py_True : Py_False;
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Py_INCREF(result);
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}
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return result;
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}
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#undef spam1
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#undef spam2
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#undef spam1o
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#undef spam1o
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#define spam1(OP,DOC) {#OP, OP, METH_VARARGS, PyDoc_STR(DOC)},
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#define spam2(OP,ALTOP,DOC) {#OP, op_##OP, METH_VARARGS, PyDoc_STR(DOC)}, \
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{#ALTOP, op_##OP, METH_VARARGS, PyDoc_STR(DOC)},
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#define spam1o(OP,DOC) {#OP, OP, METH_O, PyDoc_STR(DOC)},
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#define spam2o(OP,ALTOP,DOC) {#OP, op_##OP, METH_O, PyDoc_STR(DOC)}, \
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{#ALTOP, op_##OP, METH_O, PyDoc_STR(DOC)},
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static struct PyMethodDef operator_methods[] = {
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spam1o(isNumberType,
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"isNumberType(a) -- Return True if a has a numeric type, False otherwise.")
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spam1o(isSequenceType,
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"isSequenceType(a) -- Return True if a has a sequence type, False otherwise.")
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spam1o(truth,
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"truth(a) -- Return True if a is true, False otherwise.")
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spam2(contains,__contains__,
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"contains(a, b) -- Same as b in a (note reversed operands).")
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spam1(indexOf,
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"indexOf(a, b) -- Return the first index of b in a.")
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spam1(countOf,
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"countOf(a, b) -- Return the number of times b occurs in a.")
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spam1o(isMappingType,
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"isMappingType(a) -- Return True if a has a mapping type, False otherwise.")
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spam1(is_, "is_(a, b) -- Same as a is b.")
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spam1(is_not, "is_not(a, b) -- Same as a is not b.")
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spam2o(index, __index__, "index(a) -- Same as a.__index__()")
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spam2(add,__add__, "add(a, b) -- Same as a + b.")
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spam2(sub,__sub__, "sub(a, b) -- Same as a - b.")
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spam2(mul,__mul__, "mul(a, b) -- Same as a * b.")
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spam2(floordiv,__floordiv__, "floordiv(a, b) -- Same as a // b.")
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spam2(truediv,__truediv__, "truediv(a, b) -- Same as a / b.")
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spam2(mod,__mod__, "mod(a, b) -- Same as a % b.")
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spam2o(neg,__neg__, "neg(a) -- Same as -a.")
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spam2o(pos,__pos__, "pos(a) -- Same as +a.")
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spam2o(abs,__abs__, "abs(a) -- Same as abs(a).")
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spam2o(inv,__inv__, "inv(a) -- Same as ~a.")
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spam2o(invert,__invert__, "invert(a) -- Same as ~a.")
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spam2(lshift,__lshift__, "lshift(a, b) -- Same as a << b.")
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spam2(rshift,__rshift__, "rshift(a, b) -- Same as a >> b.")
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spam2o(not_,__not__, "not_(a) -- Same as not a.")
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spam2(and_,__and__, "and_(a, b) -- Same as a & b.")
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spam2(xor,__xor__, "xor(a, b) -- Same as a ^ b.")
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spam2(or_,__or__, "or_(a, b) -- Same as a | b.")
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spam2(iadd,__iadd__, "iadd(a, b) -- Same as a += b.")
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spam2(isub,__isub__, "isub(a, b) -- Same as a -= b.")
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spam2(imul,__imul__, "imul(a, b) -- Same as a *= b.")
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spam2(ifloordiv,__ifloordiv__, "ifloordiv(a, b) -- Same as a //= b.")
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spam2(itruediv,__itruediv__, "itruediv(a, b) -- Same as a /= b.")
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spam2(imod,__imod__, "imod(a, b) -- Same as a %= b.")
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spam2(ilshift,__ilshift__, "ilshift(a, b) -- Same as a <<= b.")
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spam2(irshift,__irshift__, "irshift(a, b) -- Same as a >>= b.")
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spam2(iand,__iand__, "iand(a, b) -- Same as a &= b.")
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spam2(ixor,__ixor__, "ixor(a, b) -- Same as a ^= b.")
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spam2(ior,__ior__, "ior(a, b) -- Same as a |= b.")
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spam2(concat,__concat__,
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"concat(a, b) -- Same as a + b, for a and b sequences.")
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spam2(repeat,__repeat__,
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"repeat(a, b) -- Return a * b, where a is a sequence, and b is an integer.")
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spam2(iconcat,__iconcat__,
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"iconcat(a, b) -- Same as a += b, for a and b sequences.")
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spam2(irepeat,__irepeat__,
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"irepeat(a, b) -- Same as a *= b, where a is a sequence, and b is an integer.")
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spam2(getitem,__getitem__,
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"getitem(a, b) -- Same as a[b].")
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spam2(setitem,__setitem__,
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"setitem(a, b, c) -- Same as a[b] = c.")
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spam2(delitem,__delitem__,
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"delitem(a, b) -- Same as del a[b].")
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spam2(pow,__pow__, "pow(a, b) -- Same as a ** b.")
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spam2(ipow,__ipow__, "ipow(a, b) -- Same as a **= b.")
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spam2(lt,__lt__, "lt(a, b) -- Same as a<b.")
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spam2(le,__le__, "le(a, b) -- Same as a<=b.")
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spam2(eq,__eq__, "eq(a, b) -- Same as a==b.")
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spam2(ne,__ne__, "ne(a, b) -- Same as a!=b.")
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spam2(gt,__gt__, "gt(a, b) -- Same as a>b.")
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spam2(ge,__ge__, "ge(a, b) -- Same as a>=b.")
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{NULL, NULL} /* sentinel */
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};
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/* itemgetter object **********************************************************/
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typedef struct {
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PyObject_HEAD
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Py_ssize_t nitems;
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PyObject *item;
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} itemgetterobject;
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static PyTypeObject itemgetter_type;
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static PyObject *
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itemgetter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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{
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itemgetterobject *ig;
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PyObject *item;
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Py_ssize_t nitems;
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if (!_PyArg_NoKeywords("itemgetter()", kwds))
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return NULL;
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nitems = PyTuple_GET_SIZE(args);
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if (nitems <= 1) {
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if (!PyArg_UnpackTuple(args, "itemgetter", 1, 1, &item))
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return NULL;
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} else
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item = args;
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/* create itemgetterobject structure */
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ig = PyObject_GC_New(itemgetterobject, &itemgetter_type);
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if (ig == NULL)
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return NULL;
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Py_INCREF(item);
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ig->item = item;
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ig->nitems = nitems;
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PyObject_GC_Track(ig);
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return (PyObject *)ig;
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}
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static void
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itemgetter_dealloc(itemgetterobject *ig)
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{
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PyObject_GC_UnTrack(ig);
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Py_XDECREF(ig->item);
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PyObject_GC_Del(ig);
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}
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static int
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itemgetter_traverse(itemgetterobject *ig, visitproc visit, void *arg)
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{
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Py_VISIT(ig->item);
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return 0;
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}
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static PyObject *
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itemgetter_call(itemgetterobject *ig, PyObject *args, PyObject *kw)
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{
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PyObject *obj, *result;
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Py_ssize_t i, nitems=ig->nitems;
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if (!PyArg_UnpackTuple(args, "itemgetter", 1, 1, &obj))
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return NULL;
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if (nitems == 1)
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return PyObject_GetItem(obj, ig->item);
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assert(PyTuple_Check(ig->item));
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assert(PyTuple_GET_SIZE(ig->item) == nitems);
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result = PyTuple_New(nitems);
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if (result == NULL)
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return NULL;
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for (i=0 ; i < nitems ; i++) {
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PyObject *item, *val;
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item = PyTuple_GET_ITEM(ig->item, i);
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val = PyObject_GetItem(obj, item);
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if (val == NULL) {
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Py_DECREF(result);
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return NULL;
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}
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PyTuple_SET_ITEM(result, i, val);
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}
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return result;
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}
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PyDoc_STRVAR(itemgetter_doc,
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"itemgetter(item, ...) --> itemgetter object\n\
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\n\
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Return a callable object that fetches the given item(s) from its operand.\n\
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After, f=itemgetter(2), the call f(r) returns r[2].\n\
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After, g=itemgetter(2,5,3), the call g(r) returns (r[2], r[5], r[3])");
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static PyTypeObject itemgetter_type = {
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PyVarObject_HEAD_INIT(NULL, 0)
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"operator.itemgetter", /* tp_name */
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sizeof(itemgetterobject), /* tp_basicsize */
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0, /* tp_itemsize */
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/* methods */
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(destructor)itemgetter_dealloc, /* tp_dealloc */
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0, /* tp_print */
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0, /* tp_getattr */
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0, /* tp_setattr */
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0, /* tp_compare */
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0, /* tp_repr */
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0, /* tp_as_number */
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0, /* tp_as_sequence */
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0, /* tp_as_mapping */
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0, /* tp_hash */
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(ternaryfunc)itemgetter_call, /* tp_call */
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0, /* tp_str */
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PyObject_GenericGetAttr, /* tp_getattro */
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0, /* tp_setattro */
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0, /* tp_as_buffer */
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Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC, /* tp_flags */
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itemgetter_doc, /* tp_doc */
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(traverseproc)itemgetter_traverse, /* tp_traverse */
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0, /* tp_clear */
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0, /* tp_richcompare */
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0, /* tp_weaklistoffset */
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0, /* tp_iter */
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0, /* tp_iternext */
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0, /* tp_methods */
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0, /* tp_members */
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0, /* tp_getset */
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0, /* tp_base */
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0, /* tp_dict */
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0, /* tp_descr_get */
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0, /* tp_descr_set */
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0, /* tp_dictoffset */
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0, /* tp_init */
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0, /* tp_alloc */
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itemgetter_new, /* tp_new */
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0, /* tp_free */
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};
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/* attrgetter object **********************************************************/
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typedef struct {
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PyObject_HEAD
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Py_ssize_t nattrs;
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PyObject *attr;
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} attrgetterobject;
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static PyTypeObject attrgetter_type;
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static PyObject *
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attrgetter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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{
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attrgetterobject *ag;
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PyObject *attr;
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Py_ssize_t nattrs;
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if (!_PyArg_NoKeywords("attrgetter()", kwds))
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return NULL;
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nattrs = PyTuple_GET_SIZE(args);
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if (nattrs <= 1) {
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if (!PyArg_UnpackTuple(args, "attrgetter", 1, 1, &attr))
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return NULL;
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} else
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attr = args;
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|
|
/* 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;
|
|
|
|
if (!PyUnicode_Check(attr)) {
|
|
PyErr_SetString(PyExc_TypeError,
|
|
"attribute name must be a string");
|
|
return NULL;
|
|
}
|
|
|
|
s = _PyUnicode_AsString(attr);
|
|
Py_INCREF(obj);
|
|
for (;;) {
|
|
PyObject *newobj, *str;
|
|
p = strchr(s, '.');
|
|
str = p ? PyUnicode_FromStringAndSize(s, (p-s)) :
|
|
PyUnicode_FromString(s);
|
|
if (str == NULL) {
|
|
Py_DECREF(obj);
|
|
return NULL;
|
|
}
|
|
newobj = PyObject_GetAttr(obj, str);
|
|
Py_DECREF(str);
|
|
Py_DECREF(obj);
|
|
if (newobj == NULL)
|
|
return NULL;
|
|
obj = newobj;
|
|
if (p == NULL) break;
|
|
s = p+1;
|
|
}
|
|
|
|
return obj;
|
|
}
|
|
|
|
static PyObject *
|
|
attrgetter_call(attrgetterobject *ag, PyObject *args, PyObject *kw)
|
|
{
|
|
PyObject *obj, *result;
|
|
Py_ssize_t i, nattrs=ag->nattrs;
|
|
|
|
if (!PyArg_UnpackTuple(args, "attrgetter", 1, 1, &obj))
|
|
return NULL;
|
|
if (ag->nattrs == 1)
|
|
return dotted_getattr(obj, ag->attr);
|
|
|
|
assert(PyTuple_Check(ag->attr));
|
|
assert(PyTuple_GET_SIZE(ag->attr) == nattrs);
|
|
|
|
result = PyTuple_New(nattrs);
|
|
if (result == NULL)
|
|
return NULL;
|
|
|
|
for (i=0 ; i < nattrs ; i++) {
|
|
PyObject *attr, *val;
|
|
attr = PyTuple_GET_ITEM(ag->attr, i);
|
|
val = dotted_getattr(obj, attr);
|
|
if (val == NULL) {
|
|
Py_DECREF(result);
|
|
return NULL;
|
|
}
|
|
PyTuple_SET_ITEM(result, i, val);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
PyDoc_STRVAR(attrgetter_doc,
|
|
"attrgetter(attr, ...) --> attrgetter object\n\
|
|
\n\
|
|
Return a callable object that fetches the given attribute(s) from its operand.\n\
|
|
After, f=attrgetter('name'), the call f(r) returns r.name.\n\
|
|
After, g=attrgetter('name', 'date'), the call g(r) returns (r.name, r.date).\n\
|
|
After, h=attrgetter('name.first', 'name.last'), the call h(r) returns\n\
|
|
(r.name.first, r.name.last).");
|
|
|
|
static PyTypeObject attrgetter_type = {
|
|
PyVarObject_HEAD_INIT(NULL, 0)
|
|
"operator.attrgetter", /* tp_name */
|
|
sizeof(attrgetterobject), /* tp_basicsize */
|
|
0, /* tp_itemsize */
|
|
/* methods */
|
|
(destructor)attrgetter_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)attrgetter_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 */
|
|
attrgetter_doc, /* tp_doc */
|
|
(traverseproc)attrgetter_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 */
|
|
attrgetter_new, /* tp_new */
|
|
0, /* tp_free */
|
|
};
|
|
|
|
|
|
/* methodcaller object **********************************************************/
|
|
|
|
typedef struct {
|
|
PyObject_HEAD
|
|
PyObject *name;
|
|
PyObject *args;
|
|
PyObject *kwds;
|
|
} methodcallerobject;
|
|
|
|
static PyTypeObject methodcaller_type;
|
|
|
|
static PyObject *
|
|
methodcaller_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
|
|
{
|
|
methodcallerobject *mc;
|
|
PyObject *name, *newargs;
|
|
|
|
if (PyTuple_GET_SIZE(args) < 1) {
|
|
PyErr_SetString(PyExc_TypeError, "methodcaller needs at least "
|
|
"one argument, the method name");
|
|
return NULL;
|
|
}
|
|
|
|
/* create methodcallerobject structure */
|
|
mc = PyObject_GC_New(methodcallerobject, &methodcaller_type);
|
|
if (mc == NULL)
|
|
return NULL;
|
|
|
|
newargs = PyTuple_GetSlice(args, 1, PyTuple_GET_SIZE(args));
|
|
if (newargs == NULL) {
|
|
Py_DECREF(mc);
|
|
return NULL;
|
|
}
|
|
mc->args = newargs;
|
|
|
|
name = PyTuple_GET_ITEM(args, 0);
|
|
Py_INCREF(name);
|
|
mc->name = name;
|
|
|
|
Py_XINCREF(kwds);
|
|
mc->kwds = kwds;
|
|
|
|
PyObject_GC_Track(mc);
|
|
return (PyObject *)mc;
|
|
}
|
|
|
|
static void
|
|
methodcaller_dealloc(methodcallerobject *mc)
|
|
{
|
|
PyObject_GC_UnTrack(mc);
|
|
Py_XDECREF(mc->name);
|
|
Py_XDECREF(mc->args);
|
|
Py_XDECREF(mc->kwds);
|
|
PyObject_GC_Del(mc);
|
|
}
|
|
|
|
static int
|
|
methodcaller_traverse(methodcallerobject *mc, visitproc visit, void *arg)
|
|
{
|
|
Py_VISIT(mc->args);
|
|
Py_VISIT(mc->kwds);
|
|
return 0;
|
|
}
|
|
|
|
static PyObject *
|
|
methodcaller_call(methodcallerobject *mc, PyObject *args, PyObject *kw)
|
|
{
|
|
PyObject *method, *obj, *result;
|
|
|
|
if (!PyArg_UnpackTuple(args, "methodcaller", 1, 1, &obj))
|
|
return NULL;
|
|
method = PyObject_GetAttr(obj, mc->name);
|
|
if (method == NULL)
|
|
return NULL;
|
|
result = PyObject_Call(method, mc->args, mc->kwds);
|
|
Py_DECREF(method);
|
|
return result;
|
|
}
|
|
|
|
PyDoc_STRVAR(methodcaller_doc,
|
|
"methodcaller(name, ...) --> methodcaller object\n\
|
|
\n\
|
|
Return a callable object that calls the given method on its operand.\n\
|
|
After, f = methodcaller('name'), the call f(r) returns r.name().\n\
|
|
After, g = methodcaller('name', 'date', foo=1), the call g(r) returns\n\
|
|
r.name('date', foo=1).");
|
|
|
|
static PyTypeObject methodcaller_type = {
|
|
PyVarObject_HEAD_INIT(NULL, 0)
|
|
"operator.methodcaller", /* tp_name */
|
|
sizeof(methodcallerobject), /* tp_basicsize */
|
|
0, /* tp_itemsize */
|
|
/* methods */
|
|
(destructor)methodcaller_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)methodcaller_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 */
|
|
methodcaller_doc, /* tp_doc */
|
|
(traverseproc)methodcaller_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 */
|
|
methodcaller_new, /* tp_new */
|
|
0, /* tp_free */
|
|
};
|
|
|
|
|
|
/* Initialization function for the module (*must* be called PyInit_operator) */
|
|
|
|
|
|
static struct PyModuleDef operatormodule = {
|
|
PyModuleDef_HEAD_INIT,
|
|
"operator",
|
|
operator_doc,
|
|
-1,
|
|
operator_methods,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
PyMODINIT_FUNC
|
|
PyInit_operator(void)
|
|
{
|
|
PyObject *m;
|
|
|
|
/* Create the module and add the functions */
|
|
m = PyModule_Create(&operatormodule);
|
|
if (m == NULL)
|
|
return NULL;
|
|
|
|
if (PyType_Ready(&itemgetter_type) < 0)
|
|
return NULL;
|
|
Py_INCREF(&itemgetter_type);
|
|
PyModule_AddObject(m, "itemgetter", (PyObject *)&itemgetter_type);
|
|
|
|
if (PyType_Ready(&attrgetter_type) < 0)
|
|
return NULL;
|
|
Py_INCREF(&attrgetter_type);
|
|
PyModule_AddObject(m, "attrgetter", (PyObject *)&attrgetter_type);
|
|
|
|
if (PyType_Ready(&methodcaller_type) < 0)
|
|
return NULL;
|
|
Py_INCREF(&methodcaller_type);
|
|
PyModule_AddObject(m, "methodcaller", (PyObject *)&methodcaller_type);
|
|
return m;
|
|
}
|