Mercurial > cpython-lru_cache-weakref
annotate Objects/moduleobject.c @ 1944:8e8fddcbdfd2 legacy-trunk
Hopefully the last edits for 1.1
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Thu, 06 Oct 1994 16:15:09 +0000 |
| parents | b724599401ff |
| children | 866c81068dbd |
| rev | line source |
|---|---|
| 145 | 1 /*********************************************************** |
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2 Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum, |
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3 Amsterdam, The Netherlands. |
| 145 | 4 |
| 5 All Rights Reserved | |
| 6 | |
| 7 Permission to use, copy, modify, and distribute this software and its | |
| 8 documentation for any purpose and without fee is hereby granted, | |
| 9 provided that the above copyright notice appear in all copies and that | |
| 10 both that copyright notice and this permission notice appear in | |
| 11 supporting documentation, and that the names of Stichting Mathematisch | |
| 12 Centrum or CWI not be used in advertising or publicity pertaining to | |
| 13 distribution of the software without specific, written prior permission. | |
| 14 | |
| 15 STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO | |
| 16 THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
| 17 FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE | |
| 18 FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT | |
| 21 OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 22 | |
| 23 ******************************************************************/ | |
| 24 | |
| 6 | 25 /* Module object implementation */ |
| 26 | |
| 86 | 27 #include "allobjects.h" |
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28 #include "ceval.h" |
| 6 | 29 |
| 30 typedef struct { | |
| 31 OB_HEAD | |
| 32 object *md_dict; | |
| 33 } moduleobject; | |
| 34 | |
| 35 object * | |
| 36 newmoduleobject(name) | |
| 37 char *name; | |
| 38 { | |
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39 moduleobject *m; |
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40 object *nameobj; |
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41 m = NEWOBJ(moduleobject, &Moduletype); |
| 6 | 42 if (m == NULL) |
| 43 return NULL; | |
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44 nameobj = newstringobject(name); |
| 6 | 45 m->md_dict = newdictobject(); |
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46 if (m->md_dict == NULL || nameobj == NULL) |
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47 goto fail; |
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48 if (dictinsert(m->md_dict, "__name__", nameobj) != 0) |
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49 goto fail; |
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50 DECREF(nameobj); |
| 6 | 51 return (object *)m; |
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52 |
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53 fail: |
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54 XDECREF(nameobj); |
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55 DECREF(m); |
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56 return NULL; |
| 6 | 57 } |
| 58 | |
| 59 object * | |
| 60 getmoduledict(m) | |
| 61 object *m; | |
| 62 { | |
| 63 if (!is_moduleobject(m)) { | |
| 86 | 64 err_badcall(); |
| 6 | 65 return NULL; |
| 66 } | |
| 67 return ((moduleobject *)m) -> md_dict; | |
| 68 } | |
| 69 | |
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70 char * |
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71 getmodulename(m) |
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72 object *m; |
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73 { |
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74 object *nameobj; |
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75 if (!is_moduleobject(m)) { |
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76 err_badarg(); |
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77 return NULL; |
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78 } |
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79 nameobj = dictlookup(((moduleobject *)m)->md_dict, "__name__"); |
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80 if (nameobj == NULL || !is_stringobject(nameobj)) { |
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81 err_setstr(SystemError, "nameless module"); |
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82 return NULL; |
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83 } |
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84 return getstringvalue(nameobj); |
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85 } |
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86 |
| 6 | 87 /* Methods */ |
| 88 | |
| 89 static void | |
| 86 | 90 module_dealloc(m) |
| 6 | 91 moduleobject *m; |
| 92 { | |
| 93 if (m->md_dict != NULL) | |
| 94 DECREF(m->md_dict); | |
| 95 free((char *)m); | |
| 96 } | |
| 97 | |
| 98 static object * | |
| 86 | 99 module_repr(m) |
| 6 | 100 moduleobject *m; |
| 101 { | |
| 102 char buf[100]; | |
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103 char *name = getmodulename((object *)m); |
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104 if (name == NULL) { |
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105 err_clear(); |
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106 name = "?"; |
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107 } |
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108 sprintf(buf, "<module '%.80s'>", name); |
| 6 | 109 return newstringobject(buf); |
| 110 } | |
| 111 | |
| 112 static object * | |
| 86 | 113 module_getattr(m, name) |
| 6 | 114 moduleobject *m; |
| 115 char *name; | |
| 116 { | |
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117 object *res; |
| 86 | 118 if (strcmp(name, "__dict__") == 0) { |
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119 INCREF(m->md_dict); |
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120 return m->md_dict; |
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121 } |
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122 res = dictlookup(m->md_dict, name); |
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123 if (res == NULL) |
| 475 | 124 err_setstr(AttributeError, name); |
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125 else { |
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126 if (is_accessobject(res)) |
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127 res = getaccessvalue(res, getglobals()); |
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128 else |
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129 INCREF(res); |
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130 } |
| 6 | 131 return res; |
| 132 } | |
| 133 | |
| 134 static int | |
| 86 | 135 module_setattr(m, name, v) |
| 6 | 136 moduleobject *m; |
| 137 char *name; | |
| 138 object *v; | |
| 139 { | |
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140 object *ac; |
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141 if (name[0] == '_' && strcmp(name, "__dict__") == 0) { |
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142 err_setstr(TypeError, "read-only special attribute"); |
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143 return -1; |
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144 } |
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145 ac = dictlookup(m->md_dict, name); |
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146 if (ac != NULL && is_accessobject(ac)) |
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147 return setaccessvalue(ac, getglobals(), v); |
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148 if (v == NULL) { |
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149 int rv = dictremove(m->md_dict, name); |
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150 if (rv < 0) |
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151 err_setstr(AttributeError, |
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152 "delete non-existing module attribute"); |
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153 return rv; |
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154 } |
| 6 | 155 else |
| 156 return dictinsert(m->md_dict, name, v); | |
| 157 } | |
| 158 | |
| 159 typeobject Moduletype = { | |
| 160 OB_HEAD_INIT(&Typetype) | |
| 161 0, /*ob_size*/ | |
| 162 "module", /*tp_name*/ | |
| 163 sizeof(moduleobject), /*tp_size*/ | |
| 164 0, /*tp_itemsize*/ | |
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165 (destructor)module_dealloc, /*tp_dealloc*/ |
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166 0, /*tp_print*/ |
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167 (getattrfunc)module_getattr, /*tp_getattr*/ |
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168 (setattrfunc)module_setattr, /*tp_setattr*/ |
| 86 | 169 0, /*tp_compare*/ |
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170 (reprfunc)module_repr, /*tp_repr*/ |
| 6 | 171 }; |