1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/***********************************************************
Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
Amsterdam, The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior permission.
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Module object implementation */
#include "allobjects.h"
#include "ceval.h"
typedef struct {
OB_HEAD
object *md_dict;
} moduleobject;
object *
newmoduleobject(name)
char *name;
{
moduleobject *m;
object *nameobj;
m = NEWOBJ(moduleobject, &Moduletype);
if (m == NULL)
return NULL;
nameobj = newstringobject(name);
m->md_dict = newdictobject();
if (m->md_dict == NULL || nameobj == NULL)
goto fail;
if (dictinsert(m->md_dict, "__name__", nameobj) != 0)
goto fail;
DECREF(nameobj);
return (object *)m;
fail:
XDECREF(nameobj);
DECREF(m);
return NULL;
}
object *
getmoduledict(m)
object *m;
{
if (!is_moduleobject(m)) {
err_badcall();
return NULL;
}
return ((moduleobject *)m) -> md_dict;
}
char *
getmodulename(m)
object *m;
{
object *nameobj;
if (!is_moduleobject(m)) {
err_badarg();
return NULL;
}
nameobj = dictlookup(((moduleobject *)m)->md_dict, "__name__");
if (nameobj == NULL || !is_stringobject(nameobj)) {
err_setstr(SystemError, "nameless module");
return NULL;
}
return getstringvalue(nameobj);
}
/* Methods */
static void
module_dealloc(m)
moduleobject *m;
{
if (m->md_dict != NULL)
DECREF(m->md_dict);
free((char *)m);
}
static object *
module_repr(m)
moduleobject *m;
{
char buf[100];
char *name = getmodulename((object *)m);
if (name == NULL) {
err_clear();
name = "?";
}
sprintf(buf, "<module '%.80s'>", name);
return newstringobject(buf);
}
static object *
module_getattr(m, name)
moduleobject *m;
char *name;
{
object *res;
if (strcmp(name, "__dict__") == 0) {
INCREF(m->md_dict);
return m->md_dict;
}
res = dictlookup(m->md_dict, name);
if (res == NULL)
err_setstr(AttributeError, name);
else {
if (is_accessobject(res))
res = getaccessvalue(res, getglobals());
else
INCREF(res);
}
return res;
}
static int
module_setattr(m, name, v)
moduleobject *m;
char *name;
object *v;
{
object *ac;
if (name[0] == '_' && strcmp(name, "__dict__") == 0) {
err_setstr(TypeError, "read-only special attribute");
return -1;
}
ac = dictlookup(m->md_dict, name);
if (ac != NULL && is_accessobject(ac))
return setaccessvalue(ac, getglobals(), v);
if (v == NULL) {
int rv = dictremove(m->md_dict, name);
if (rv < 0)
err_setstr(AttributeError,
"delete non-existing module attribute");
return rv;
}
else
return dictinsert(m->md_dict, name, v);
}
typeobject Moduletype = {
OB_HEAD_INIT(&Typetype)
0, /*ob_size*/
"module", /*tp_name*/
sizeof(moduleobject), /*tp_size*/
0, /*tp_itemsize*/
(destructor)module_dealloc, /*tp_dealloc*/
0, /*tp_print*/
(getattrfunc)module_getattr, /*tp_getattr*/
(setattrfunc)module_setattr, /*tp_setattr*/
0, /*tp_compare*/
(reprfunc)module_repr, /*tp_repr*/
};
|
