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- #ifndef _PY_TRIPLE_OBJ_H
- #define _PY_TRIPLE_OBJ_H
- #define PY_SSIZE_T_CLEAN
- #include <Python.h>
- #include <structmember.h>
- #include "triple.h"
- #include "term_obj.h"
- typedef struct {
- PyObject_HEAD
- LSUP_Triple * ob_struct;
- TermObject *s;
- TermObject *p;
- TermObject *o;
- } TripleObject;
- static int
- Triple_init (TripleObject *self, PyObject *args)
- {
- TermObject *s = NULL, *p = NULL, *o = NULL, *tmp;
- if (! PyArg_ParseTuple (
- /*
- args, "O!O!O!", &s, &TermType,
- &p, &TermType, &o, &TermType))
- */
- args, "OOO", &s, &p, &o))
- return -1;
- // TODO check for null s, p, o
- if (
- PyObject_TypeCheck (s, &TermType) ||
- PyObject_TypeCheck (p, &TermType) ||
- PyObject_TypeCheck (o, &TermType)
- ) return -1;
- tmp = self->s;
- Py_INCREF(s);
- self->s = s;
- Py_XDECREF(tmp);
- tmp = self->p;
- Py_INCREF(p);
- self->p = p;
- Py_XDECREF(tmp);
- tmp = self->o;
- Py_INCREF(o);
- self->o = o;
- Py_XDECREF(tmp);
- self->ob_struct = LSUP_triple_new (
- s->ob_struct, p->ob_struct, o->ob_struct);
- if (!self->ob_struct) {
- PyErr_SetString (PyExc_ValueError, "Could not create triple.");
- return -1;
- }
- return 0;
- }
- static void
- Triple_dealloc (TripleObject *self)
- {
- Py_XDECREF(self->s);
- Py_XDECREF(self->p);
- Py_XDECREF(self->o);
- free (self->ob_struct); // Term pointers were allocated independently.
- Py_TYPE (self)->tp_free ((PyObject *) self);
- }
- static PyMemberDef Triple_members[] = {
- {"s", T_OBJECT_EX, offsetof(TripleObject, s), 0, "Triple subject,"},
- {"p", T_OBJECT_EX, offsetof(TripleObject, p), 0, "Triple predicate."},
- {"o", T_OBJECT_EX, offsetof(TripleObject, o), 0, "Triple object."},
- {NULL}
- };
- static PyObject *
- Triple_richcmp (PyObject *obj1, PyObject *obj2, int op);
- PyTypeObject TripleType = {
- PyVarObject_HEAD_INIT(NULL, 0)
- .tp_name = "triple.Triple",
- .tp_doc = "RDF triple",
- .tp_basicsize = sizeof(TripleObject),
- .tp_itemsize = 0,
- .tp_flags = Py_TPFLAGS_DEFAULT,
- .tp_new = PyType_GenericNew,
- .tp_init = (initproc) Triple_init,
- .tp_dealloc = (destructor) Triple_dealloc,
- .tp_members = Triple_members,
- .tp_richcompare = Triple_richcmp,
- };
- static PyObject *
- Triple_richcmp (PyObject *obj1, PyObject *obj2, int op)
- {
- PyObject *result = NULL;
- if (
- ! PyObject_TypeCheck (obj1, &TripleType) ||
- ! PyObject_TypeCheck (obj2, &TripleType)
- ) return NULL;
- int c = 0;
- LSUP_Triple *t1 = ((TripleObject *) obj1)->ob_struct;
- LSUP_Triple *t2 = ((TripleObject *) obj2)->ob_struct;
- switch (op) {
- case Py_LT: result = Py_NotImplemented; break;
- case Py_LE: result = Py_NotImplemented; break;
- case Py_EQ: c = (
- LSUP_term_equals (t1->s, t2->s) &&
- LSUP_term_equals (t1->p, t2->p) &&
- LSUP_term_equals (t1->o, t2->o)); break;
- case Py_NE: c = (!
- LSUP_term_equals (t1->s, t2->s) &&
- LSUP_term_equals (t1->p, t2->p) &&
- LSUP_term_equals (t1->o, t2->o)); break;
- case Py_GT: result = Py_NotImplemented; break;
- case Py_GE: result = Py_NotImplemented; break;
- }
- if (!result) result = c ? Py_True : Py_False;
- Py_INCREF(result);
- return result;
- }
- #endif
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