Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | 6610ad9 | 1995-01-04 19:07:38 +0000 | [diff] [blame] | 2 | Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
| 3 | The Netherlands. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 4 | |
| 5 | All Rights Reserved |
| 6 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 9 | provided that the above copyright notice appear in all copies and that |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 10 | both that copyright notice and this permission notice appear in |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 11 | supporting documentation, and that the names of Stichting Mathematisch |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 12 | Centrum or CWI or Corporation for National Research Initiatives or |
| 13 | CNRI not be used in advertising or publicity pertaining to |
| 14 | distribution of the software without specific, written prior |
| 15 | permission. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 16 | |
Guido van Rossum | d266eb4 | 1996-10-25 14:44:06 +0000 | [diff] [blame] | 17 | While CWI is the initial source for this software, a modified version |
| 18 | is made available by the Corporation for National Research Initiatives |
| 19 | (CNRI) at the Internet address ftp://ftp.python.org. |
| 20 | |
| 21 | STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH |
| 22 | REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF |
| 23 | MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH |
| 24 | CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL |
| 25 | DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 26 | PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 27 | TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 28 | PERFORMANCE OF THIS SOFTWARE. |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 29 | |
| 30 | ******************************************************************/ |
| 31 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 32 | /* Module object implementation */ |
| 33 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 34 | #include "allobjects.h" |
Guido van Rossum | 81daa32 | 1993-05-20 14:24:46 +0000 | [diff] [blame] | 35 | #include "ceval.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 36 | |
| 37 | typedef struct { |
| 38 | OB_HEAD |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 39 | object *md_dict; |
| 40 | } moduleobject; |
| 41 | |
| 42 | object * |
| 43 | newmoduleobject(name) |
| 44 | char *name; |
| 45 | { |
Guido van Rossum | c45611d | 1993-11-17 22:58:56 +0000 | [diff] [blame] | 46 | moduleobject *m; |
| 47 | object *nameobj; |
| 48 | m = NEWOBJ(moduleobject, &Moduletype); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 49 | if (m == NULL) |
| 50 | return NULL; |
Guido van Rossum | c45611d | 1993-11-17 22:58:56 +0000 | [diff] [blame] | 51 | nameobj = newstringobject(name); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 52 | m->md_dict = newdictobject(); |
Guido van Rossum | c45611d | 1993-11-17 22:58:56 +0000 | [diff] [blame] | 53 | if (m->md_dict == NULL || nameobj == NULL) |
| 54 | goto fail; |
| 55 | if (dictinsert(m->md_dict, "__name__", nameobj) != 0) |
| 56 | goto fail; |
Guido van Rossum | 8b14b4c | 1995-01-07 11:59:29 +0000 | [diff] [blame] | 57 | if (dictinsert(m->md_dict, "__doc__", None) != 0) |
| 58 | goto fail; |
Guido van Rossum | c45611d | 1993-11-17 22:58:56 +0000 | [diff] [blame] | 59 | DECREF(nameobj); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 60 | return (object *)m; |
Guido van Rossum | c45611d | 1993-11-17 22:58:56 +0000 | [diff] [blame] | 61 | |
| 62 | fail: |
| 63 | XDECREF(nameobj); |
| 64 | DECREF(m); |
| 65 | return NULL; |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 66 | } |
| 67 | |
| 68 | object * |
| 69 | getmoduledict(m) |
| 70 | object *m; |
| 71 | { |
| 72 | if (!is_moduleobject(m)) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 73 | err_badcall(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 74 | return NULL; |
| 75 | } |
| 76 | return ((moduleobject *)m) -> md_dict; |
| 77 | } |
| 78 | |
Guido van Rossum | 0558a20 | 1990-10-26 15:00:11 +0000 | [diff] [blame] | 79 | char * |
| 80 | getmodulename(m) |
| 81 | object *m; |
| 82 | { |
Guido van Rossum | c45611d | 1993-11-17 22:58:56 +0000 | [diff] [blame] | 83 | object *nameobj; |
Guido van Rossum | 0558a20 | 1990-10-26 15:00:11 +0000 | [diff] [blame] | 84 | if (!is_moduleobject(m)) { |
| 85 | err_badarg(); |
| 86 | return NULL; |
| 87 | } |
Guido van Rossum | c45611d | 1993-11-17 22:58:56 +0000 | [diff] [blame] | 88 | nameobj = dictlookup(((moduleobject *)m)->md_dict, "__name__"); |
| 89 | if (nameobj == NULL || !is_stringobject(nameobj)) { |
| 90 | err_setstr(SystemError, "nameless module"); |
| 91 | return NULL; |
| 92 | } |
| 93 | return getstringvalue(nameobj); |
Guido van Rossum | 0558a20 | 1990-10-26 15:00:11 +0000 | [diff] [blame] | 94 | } |
| 95 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 96 | /* Methods */ |
| 97 | |
| 98 | static void |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 99 | module_dealloc(m) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 100 | moduleobject *m; |
| 101 | { |
Guido van Rossum | 27e916f | 1995-01-26 00:39:00 +0000 | [diff] [blame] | 102 | if (m->md_dict != NULL) { |
| 103 | mappingclear(m->md_dict); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 104 | DECREF(m->md_dict); |
Guido van Rossum | 27e916f | 1995-01-26 00:39:00 +0000 | [diff] [blame] | 105 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 106 | free((char *)m); |
| 107 | } |
| 108 | |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 109 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 110 | module_repr(m) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 111 | moduleobject *m; |
| 112 | { |
| 113 | char buf[100]; |
Guido van Rossum | c45611d | 1993-11-17 22:58:56 +0000 | [diff] [blame] | 114 | char *name = getmodulename((object *)m); |
| 115 | if (name == NULL) { |
| 116 | err_clear(); |
| 117 | name = "?"; |
| 118 | } |
| 119 | sprintf(buf, "<module '%.80s'>", name); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 120 | return newstringobject(buf); |
| 121 | } |
| 122 | |
| 123 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 124 | module_getattr(m, name) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 125 | moduleobject *m; |
| 126 | char *name; |
| 127 | { |
Guido van Rossum | e87203a | 1990-10-21 22:12:30 +0000 | [diff] [blame] | 128 | object *res; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 129 | if (strcmp(name, "__dict__") == 0) { |
Guido van Rossum | e87203a | 1990-10-21 22:12:30 +0000 | [diff] [blame] | 130 | INCREF(m->md_dict); |
| 131 | return m->md_dict; |
| 132 | } |
| 133 | res = dictlookup(m->md_dict, name); |
Guido van Rossum | 2b654f7 | 1990-10-14 20:03:32 +0000 | [diff] [blame] | 134 | if (res == NULL) |
Guido van Rossum | 87e7ea7 | 1991-12-10 14:00:03 +0000 | [diff] [blame] | 135 | err_setstr(AttributeError, name); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 136 | else { |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 137 | #ifdef SUPPORT_OBSOLETE_ACCESS |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 138 | if (is_accessobject(res)) |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 139 | res = getaccessvalue(res, getglobals()); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 140 | else |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 141 | #endif |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 142 | INCREF(res); |
| 143 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 144 | return res; |
| 145 | } |
| 146 | |
| 147 | static int |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 148 | module_setattr(m, name, v) |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 149 | moduleobject *m; |
| 150 | char *name; |
| 151 | object *v; |
| 152 | { |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 153 | #ifdef SUPPORT_OBSOLETE_ACCESS |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 154 | object *ac; |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 155 | #endif |
Guido van Rossum | c45611d | 1993-11-17 22:58:56 +0000 | [diff] [blame] | 156 | if (name[0] == '_' && strcmp(name, "__dict__") == 0) { |
| 157 | err_setstr(TypeError, "read-only special attribute"); |
| 158 | return -1; |
Guido van Rossum | e87203a | 1990-10-21 22:12:30 +0000 | [diff] [blame] | 159 | } |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 160 | #ifdef SUPPORT_OBSOLETE_ACCESS |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 161 | ac = dictlookup(m->md_dict, name); |
| 162 | if (ac != NULL && is_accessobject(ac)) |
Guido van Rossum | eb6b33a | 1993-05-25 09:38:27 +0000 | [diff] [blame] | 163 | return setaccessvalue(ac, getglobals(), v); |
Guido van Rossum | 0dfcf75 | 1996-08-12 22:00:53 +0000 | [diff] [blame] | 164 | #endif |
Guido van Rossum | 94472a0 | 1992-09-04 09:45:18 +0000 | [diff] [blame] | 165 | if (v == NULL) { |
| 166 | int rv = dictremove(m->md_dict, name); |
| 167 | if (rv < 0) |
| 168 | err_setstr(AttributeError, |
| 169 | "delete non-existing module attribute"); |
| 170 | return rv; |
| 171 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 172 | else |
| 173 | return dictinsert(m->md_dict, name, v); |
| 174 | } |
| 175 | |
| 176 | typeobject Moduletype = { |
| 177 | OB_HEAD_INIT(&Typetype) |
| 178 | 0, /*ob_size*/ |
| 179 | "module", /*tp_name*/ |
| 180 | sizeof(moduleobject), /*tp_size*/ |
| 181 | 0, /*tp_itemsize*/ |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 182 | (destructor)module_dealloc, /*tp_dealloc*/ |
Guido van Rossum | 7066dd7 | 1992-09-17 17:54:56 +0000 | [diff] [blame] | 183 | 0, /*tp_print*/ |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 184 | (getattrfunc)module_getattr, /*tp_getattr*/ |
| 185 | (setattrfunc)module_setattr, /*tp_setattr*/ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 186 | 0, /*tp_compare*/ |
Guido van Rossum | 1d5735e | 1994-08-30 08:27:36 +0000 | [diff] [blame] | 187 | (reprfunc)module_repr, /*tp_repr*/ |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 188 | }; |