Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 1 | /* Module object implementation */ |
| 2 | |
| 3 | #include <stdio.h> |
| 4 | |
| 5 | #include "PROTO.h" |
| 6 | #include "object.h" |
| 7 | #include "stringobject.h" |
| 8 | #include "dictobject.h" |
| 9 | #include "moduleobject.h" |
| 10 | #include "objimpl.h" |
Guido van Rossum | 2b654f7 | 1990-10-14 20:03:32 +0000 | [diff] [blame] | 11 | #include "errors.h" |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 12 | |
| 13 | typedef struct { |
| 14 | OB_HEAD |
| 15 | object *md_name; |
| 16 | object *md_dict; |
| 17 | } moduleobject; |
| 18 | |
| 19 | object * |
| 20 | newmoduleobject(name) |
| 21 | char *name; |
| 22 | { |
| 23 | moduleobject *m = NEWOBJ(moduleobject, &Moduletype); |
| 24 | if (m == NULL) |
| 25 | return NULL; |
| 26 | m->md_name = newstringobject(name); |
| 27 | m->md_dict = newdictobject(); |
| 28 | if (m->md_name == NULL || m->md_dict == NULL) { |
| 29 | DECREF(m); |
| 30 | return NULL; |
| 31 | } |
| 32 | return (object *)m; |
| 33 | } |
| 34 | |
| 35 | object * |
| 36 | getmoduledict(m) |
| 37 | object *m; |
| 38 | { |
| 39 | if (!is_moduleobject(m)) { |
Guido van Rossum | e87203a | 1990-10-21 22:12:30 +0000 | [diff] [blame^] | 40 | err_badarg(); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 41 | return NULL; |
| 42 | } |
| 43 | return ((moduleobject *)m) -> md_dict; |
| 44 | } |
| 45 | |
| 46 | int |
| 47 | setmoduledict(m, v) |
| 48 | object *m; |
| 49 | object *v; |
| 50 | { |
Guido van Rossum | e87203a | 1990-10-21 22:12:30 +0000 | [diff] [blame^] | 51 | if (!is_moduleobject(m)) { |
| 52 | err_badarg(); |
| 53 | return -1; |
| 54 | } |
| 55 | if (!is_dictobject(v)) { |
| 56 | err_badarg(); |
| 57 | return -1; |
| 58 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 59 | DECREF(((moduleobject *)m) -> md_dict); |
| 60 | INCREF(v); |
| 61 | ((moduleobject *)m) -> md_dict = v; |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | /* Methods */ |
| 66 | |
| 67 | static void |
| 68 | moduledealloc(m) |
| 69 | moduleobject *m; |
| 70 | { |
| 71 | if (m->md_name != NULL) |
| 72 | DECREF(m->md_name); |
| 73 | if (m->md_dict != NULL) |
| 74 | DECREF(m->md_dict); |
| 75 | free((char *)m); |
| 76 | } |
| 77 | |
| 78 | static void |
| 79 | moduleprint(m, fp, flags) |
| 80 | moduleobject *m; |
| 81 | FILE *fp; |
| 82 | int flags; |
| 83 | { |
| 84 | fprintf(fp, "<module %s>", getstringvalue(m->md_name)); |
| 85 | } |
| 86 | |
| 87 | static object * |
| 88 | modulerepr(m) |
| 89 | moduleobject *m; |
| 90 | { |
| 91 | char buf[100]; |
| 92 | sprintf(buf, "<module %.80s>", getstringvalue(m->md_name)); |
| 93 | return newstringobject(buf); |
| 94 | } |
| 95 | |
| 96 | static object * |
| 97 | modulegetattr(m, name) |
| 98 | moduleobject *m; |
| 99 | char *name; |
| 100 | { |
Guido van Rossum | e87203a | 1990-10-21 22:12:30 +0000 | [diff] [blame^] | 101 | object *res; |
| 102 | if (strcmp(name, "__dict") == 0) { |
| 103 | INCREF(m->md_dict); |
| 104 | return m->md_dict; |
| 105 | } |
| 106 | res = dictlookup(m->md_dict, name); |
Guido van Rossum | 2b654f7 | 1990-10-14 20:03:32 +0000 | [diff] [blame] | 107 | if (res == NULL) |
| 108 | err_setstr(NameError, name); |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 109 | else |
| 110 | INCREF(res); |
| 111 | return res; |
| 112 | } |
| 113 | |
| 114 | static int |
| 115 | modulesetattr(m, name, v) |
| 116 | moduleobject *m; |
| 117 | char *name; |
| 118 | object *v; |
| 119 | { |
Guido van Rossum | e87203a | 1990-10-21 22:12:30 +0000 | [diff] [blame^] | 120 | if (strcmp(name, "__dict") == 0) { |
| 121 | /* Can't allow assignment to __dict, it would screw up |
| 122 | module's functions which still use the old dictionary. */ |
| 123 | err_setstr(NameError, "__dict is a reserved member name"); |
| 124 | return NULL; |
| 125 | } |
Guido van Rossum | 85a5fbb | 1990-10-14 12:07:46 +0000 | [diff] [blame] | 126 | if (v == NULL) |
| 127 | return dictremove(m->md_dict, name); |
| 128 | else |
| 129 | return dictinsert(m->md_dict, name, v); |
| 130 | } |
| 131 | |
| 132 | typeobject Moduletype = { |
| 133 | OB_HEAD_INIT(&Typetype) |
| 134 | 0, /*ob_size*/ |
| 135 | "module", /*tp_name*/ |
| 136 | sizeof(moduleobject), /*tp_size*/ |
| 137 | 0, /*tp_itemsize*/ |
| 138 | moduledealloc, /*tp_dealloc*/ |
| 139 | moduleprint, /*tp_print*/ |
| 140 | modulegetattr, /*tp_getattr*/ |
| 141 | modulesetattr, /*tp_setattr*/ |
| 142 | 0, /*tp_compare*/ |
| 143 | modulerepr, /*tp_repr*/ |
| 144 | }; |