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- /***********************************************************
- Copyright 1991-1995 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 or Corporation for National Research Initiatives or
- CNRI not be used in advertising or publicity pertaining to
- distribution of the software without specific, written prior
- permission.
-
- While CWI is the initial source for this software, a modified version
- is made available by the Corporation for National Research Initiatives
- (CNRI) at the Internet address ftp://ftp.python.org.
-
- STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
- REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
- MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
- CENTRUM OR CNRI 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;
-
- #include "protos/moduleobject_protos.h"
-
- 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;
- if (dictinsert(m->md_dict, "__doc__", None) != 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) {
- mappingclear(m->md_dict);
- 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 {
- #ifdef SUPPORT_OBSOLETE_ACCESS
- if (is_accessobject(res))
- res = getaccessvalue(res, getglobals());
- else
- #endif
- INCREF(res);
- }
- return res;
- }
-
- static int
- module_setattr(m, name, v)
- moduleobject *m;
- char *name;
- object *v;
- {
- #ifdef SUPPORT_OBSOLETE_ACCESS
- object *ac;
- #endif
- if (name[0] == '_' && strcmp(name, "__dict__") == 0) {
- err_setstr(TypeError, "read-only special attribute");
- return -1;
- }
- #ifdef SUPPORT_OBSOLETE_ACCESS
- ac = dictlookup(m->md_dict, name);
- if (ac != NULL && is_accessobject(ac))
- return setaccessvalue(ac, getglobals(), v);
- #endif
- 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*/
- };
-