chiark / gitweb /
General reorganization.
[mLib-python] / sym.pyx
CommitLineData
20bce5e9 1# -*-pyrex-*-
2#
3# $Id$
4#
5# Symbol table, using universal hashing
6#
7# (c) 2005 Straylight/Edgeware
8#
9
10#----- Licensing notice -----------------------------------------------------
11#
12# This file is part of the Python interface to mLib.
13#
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.
18#
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.
23#
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.
27
579d0169 28cdef struct _sym_entry:
20bce5e9 29 sym_base _b
30 PyObject *v
31
579d0169 32cdef class SymTable (Mapping):
20bce5e9 33 cdef sym_table _t
579d0169 34 cdef int _init(me) except -1:
20bce5e9 35 sym_create(&me._t)
579d0169 36 return 0
37 cdef void *_find(me, object key, unsigned *f) except NULL:
38 cdef void *p
39 cdef int n
40 cdef _sym_entry *e
41 PyObject_AsReadBuffer(key, &p, &n)
20bce5e9 42 if f:
579d0169 43 f[0] = 0
44 e = <_sym_entry *>sym_find(&me._t, <char *>p, n, PSIZEOF(e), f)
45 if not f[0]:
46 e.v = NULL
20bce5e9 47 else:
579d0169 48 e = <_sym_entry *>sym_find(&me._t, <char *>p, n, 0, NULL)
49 return <void *>e
50 cdef object _key(me, void *e):
51 return PyString_FromStringAndSize(SYM_NAME(e), SYM_LEN(e))
52 cdef object _value(me, void *e):
53 cdef _sym_entry *ee
54 ee = <_sym_entry *>e
55 Py_INCREF(ee.v)
56 return <object>ee.v
57 cdef void _setval(me, void *e, object val):
58 cdef _sym_entry *ee
59 ee = <_sym_entry *>e
60 if ee.v:
61 Py_DECREF(ee.v)
62 ee.v = <PyObject *>v
63 Py_INCREF(ee.v)
64 cdef void _del(me, void *e):
65 cdef _sym_entry *ee
66 ee = <_sym_entry *>e
67 if ee.v:
68 Py_DECREF(ee.v)
69 sym_remove(&me._t, <void *>ee)
70 cdef _MapIterator _iter(me):
71 return _SymIter(me)
20bce5e9 72
579d0169 73cdef class _SymIter (_MapIterator):
74 cdef SymTable t
75 cdef sym_iter i
76 def __new__(me, SymTable t):
77 me.t = t
78 sym_mkiter(&me.i, &me.t._t)
79 cdef void *_next(me):
80 return sym_next(&me.i)
20bce5e9 81
82#----- That's all, folks ----------------------------------------------------