7 * (c) 2005 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of the Python interface to mLib.
14 * mLib/Python is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * mLib/Python is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with mLib/Python; if not, write to the Free Software Foundation,
26 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 /*----- Header files ------------------------------------------------------*/
33 #include <mLib/atom.h>
34 #include <mLib/assoc.h>
35 #include <mLib/dstr.h>
40 /*----- Data structures ---------------------------------------------------*/
42 typedef struct entry
{
47 /*----- Static variables --------------------------------------------------*/
49 static assoc_table obarray
;
51 /*----- Main code ---------------------------------------------------------*/
53 PyObject
*atom_pywrap(atom
*a
)
58 e
= assoc_find(&obarray
, a
, sizeof(entry
), &f
);
60 atom_pyobj
*ao
= PyObject_NEW(atom_pyobj
, &atom_pytype
);
62 e
->a
= (PyObject
*)ao
;
67 PyObject
*atom_pyintern(PyObject
*x
)
76 a
= atom_gensym(ATOM_GLOBAL
);
78 if (PyObject_AsReadBuffer(x
, &p
, &n
)) return (0);
79 a
= atom_nintern(ATOM_GLOBAL
, p
, n
);
81 return (atom_pywrap(a
));
84 static void atom_pydealloc(PyObject
*me
)
85 { fprintf(stderr
, "ouch! freeing atom\n"); abort(); }
87 static PyObject
*atom_pynew(PyTypeObject
*ty
, PyObject
*arg
, PyObject
*kw
)
90 static char *kwlist
[] = { "name", 0 };
92 if (!PyArg_ParseTupleAndKeywords(arg
, kw
, "O:new", kwlist
, &name
))
94 return (atom_pyintern(name
));
97 static PyObject
*aget_name(PyObject
*me
, void *hunoz
)
99 return (PyString_FromStringAndSize(ATOM_NAME(ATOM_A(me
)),
100 ATOM_LEN(ATOM_A(me
))));
103 static PyObject
*aget_internedp(PyObject
*me
, void *hunoz
)
105 PyObject
*rc
= (ATOM_A(me
)->f
& ATOMF_GENSYM
) ? Py_False
: Py_True
;
109 static PyGetSetDef atom_pygetset
[] = {
110 #define GETSETNAME(op, name) a##op##_##name
111 GET (name
, "A.name -> NAME")
112 GET (internedp
, "A.internedp -> BOOL")
117 static PyObject
*atom_pyrichcompare(PyObject
*x
, PyObject
*y
, int op
)
122 case Py_EQ
: rc
= (x
== y
) ? Py_True
: Py_False
; break;
123 case Py_NE
: rc
= (x
!= y
) ? Py_True
: Py_False
; break;
125 PyErr_SetString(PyExc_TypeError
, "atoms are unordered");
131 static PyObject
*atom_pyrepr(PyObject
*me
)
133 PyObject
*s
, *sr
= 0;
139 if ((s
= aget_name(me
, 0)) == 0 ||
140 (sr
= PyObject_Repr(s
)) == 0 ||
141 PyString_AsStringAndSize(sr
, &p
, &n
))
143 dstr_puts(&d
, "Atom(");
146 rc
= PyString_FromStringAndSize(d
.buf
, d
.len
);
154 static long atom_pyhash(PyObject
*me
)
155 { long h
= ATOM_HASH(ATOM_A(me
)); if (h
== -1) h
= -2; return (h
); }
157 PyTypeObject atom_pytype
= {
158 PyObject_HEAD_INIT(0) 0, /* Header */
159 "atom.Atom", /* @tp_name@ */
160 sizeof(atom_pyobj
), /* @tp_basicsize@ */
161 0, /* @tp_itemsize@ */
163 atom_pydealloc
, /* @tp_dealloc@ */
165 0, /* @tp_getattr@ */
166 0, /* @tp_setattr@ */
167 0, /* @tp_compare@ */
168 atom_pyrepr
, /* @tp_repr@ */
169 0, /* @tp_as_number@ */
170 0, /* @tp_as_sequence@ */
171 0, /* @tp_as_mapping@ */
172 atom_pyhash
, /* @tp_hash@ */
174 atom_pyrepr
, /* @tp_str@ */
175 0, /* @tp_getattro@ */
176 0, /* @tp_setattro@ */
177 0, /* @tp_as_buffer@ */
178 Py_TPFLAGS_DEFAULT
, /* @tp_flags@ */
183 0, /* @tp_traverse@ */
185 atom_pyrichcompare
, /* @tp_richcompare@ */
186 0, /* @tp_weaklistoffset@ */
188 0, /* @tp_iternexr@ */
189 0, /* @tp_methods@ */
190 0, /* @tp_members@ */
191 atom_pygetset
, /* @tp_getset@ */
194 0, /* @tp_descr_get@ */
195 0, /* @tp_descr_set@ */
196 0, /* @tp_dictoffset@ */
198 PyType_GenericAlloc
, /* @tp_alloc@ */
199 atom_pynew
, /* @tp_new@ */
204 void atom_pysetup(void)
205 { assoc_create(&obarray
); PyType_Ready(&atom_pytype
); }
207 /*----- That's all, folks -------------------------------------------------*/