Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | /*********************************************************** |
Guido van Rossum | bab9d03 | 1992-04-05 14:26:55 +0000 | [diff] [blame] | 2 | Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The |
Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 3 | Netherlands. |
| 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 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 25 | /* Built-in functions */ |
| 26 | |
| 27 | #include "allobjects.h" |
| 28 | |
| 29 | #include "node.h" |
| 30 | #include "graminit.h" |
| 31 | #include "errcode.h" |
| 32 | #include "sysmodule.h" |
Guido van Rossum | 86cd6e6 | 1991-01-21 15:12:35 +0000 | [diff] [blame] | 33 | #include "bltinmodule.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 34 | #include "import.h" |
| 35 | #include "pythonrun.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 36 | #include "ceval.h" |
| 37 | #include "modsupport.h" |
| 38 | |
| 39 | static object * |
| 40 | builtin_abs(self, v) |
| 41 | object *self; |
| 42 | object *v; |
| 43 | { |
Guido van Rossum | d490545 | 1991-05-05 20:00:36 +0000 | [diff] [blame] | 44 | number_methods *nm; |
| 45 | if (v == NULL || (nm = v->ob_type->tp_as_number) == NULL) { |
| 46 | err_setstr(TypeError, "abs() requires numeric argument"); |
| 47 | return NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 48 | } |
Guido van Rossum | d490545 | 1991-05-05 20:00:36 +0000 | [diff] [blame] | 49 | return (*nm->nb_absolute)(v); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 50 | } |
| 51 | |
| 52 | static object * |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 53 | builtin_apply(self, args) |
Guido van Rossum | c02e15c | 1991-12-16 13:03:00 +0000 | [diff] [blame] | 54 | object *self; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 55 | object *args; |
Guido van Rossum | c02e15c | 1991-12-16 13:03:00 +0000 | [diff] [blame] | 56 | { |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 57 | object *func, *arglist; |
| 58 | if (!getargs(args, "(OO)", &func, &arglist)) |
Guido van Rossum | c02e15c | 1991-12-16 13:03:00 +0000 | [diff] [blame] | 59 | return NULL; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 60 | return call_object(func, arglist); |
Guido van Rossum | c02e15c | 1991-12-16 13:03:00 +0000 | [diff] [blame] | 61 | } |
| 62 | |
| 63 | static object * |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 64 | builtin_chr(self, args) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 65 | object *self; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 66 | object *args; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 67 | { |
| 68 | long x; |
| 69 | char s[1]; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 70 | if (!getargs(args, "l", &x)) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 71 | return NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 72 | if (x < 0 || x >= 256) { |
Guido van Rossum | 50afb7a | 1991-12-10 13:52:31 +0000 | [diff] [blame] | 73 | err_setstr(ValueError, "chr() arg not in range(256)"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 74 | return NULL; |
| 75 | } |
| 76 | s[0] = x; |
| 77 | return newsizedstringobject(s, 1); |
| 78 | } |
| 79 | |
| 80 | static object * |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 81 | builtin_coerce(self, args) |
| 82 | object *self; |
| 83 | object *args; |
| 84 | { |
| 85 | object *v, *w; |
| 86 | object *res; |
| 87 | |
| 88 | if (!getargs(args, "(OO)", &v, &w)) |
| 89 | return NULL; |
| 90 | if (coerce(&v, &w) < 0) |
| 91 | return NULL; |
| 92 | res = mkvalue("(OO)", v, w); |
| 93 | DECREF(v); |
| 94 | DECREF(w); |
| 95 | return res; |
| 96 | } |
| 97 | |
| 98 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 99 | builtin_dir(self, v) |
| 100 | object *self; |
| 101 | object *v; |
| 102 | { |
| 103 | object *d; |
| 104 | if (v == NULL) { |
| 105 | d = getlocals(); |
Guido van Rossum | dc8a108 | 1991-10-20 20:11:03 +0000 | [diff] [blame] | 106 | INCREF(d); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 107 | } |
| 108 | else { |
Guido van Rossum | dc8a108 | 1991-10-20 20:11:03 +0000 | [diff] [blame] | 109 | d = getattr(v, "__dict__"); |
| 110 | if (d == NULL) { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 111 | err_setstr(TypeError, |
Guido van Rossum | 006bcd4 | 1991-10-24 14:54:44 +0000 | [diff] [blame] | 112 | "dir() argument must have __dict__ attribute"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 113 | return NULL; |
| 114 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 115 | } |
Guido van Rossum | 006bcd4 | 1991-10-24 14:54:44 +0000 | [diff] [blame] | 116 | if (is_dictobject(d)) { |
Guido van Rossum | dc8a108 | 1991-10-20 20:11:03 +0000 | [diff] [blame] | 117 | v = getdictkeys(d); |
| 118 | if (sortlist(v) != 0) { |
| 119 | DECREF(v); |
| 120 | v = NULL; |
| 121 | } |
| 122 | } |
Guido van Rossum | 006bcd4 | 1991-10-24 14:54:44 +0000 | [diff] [blame] | 123 | else { |
| 124 | v = newlistobject(0); |
| 125 | } |
Guido van Rossum | dc8a108 | 1991-10-20 20:11:03 +0000 | [diff] [blame] | 126 | DECREF(d); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 127 | return v; |
| 128 | } |
| 129 | |
| 130 | static object * |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 131 | builtin_divmod(self, args) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 132 | object *self; |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 133 | object *args; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 134 | { |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 135 | object *v, *w, *x; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 136 | if (!getargs(args, "(OO)", &v, &w)) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 137 | return NULL; |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 138 | if (v->ob_type->tp_as_number == NULL || |
| 139 | w->ob_type->tp_as_number == NULL) { |
Guido van Rossum | d490545 | 1991-05-05 20:00:36 +0000 | [diff] [blame] | 140 | err_setstr(TypeError, "divmod() requires numeric arguments"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 141 | return NULL; |
| 142 | } |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 143 | if (coerce(&v, &w) != 0) |
| 144 | return NULL; |
| 145 | x = (*v->ob_type->tp_as_number->nb_divmod)(v, w); |
| 146 | DECREF(v); |
| 147 | DECREF(w); |
| 148 | return x; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 149 | } |
| 150 | |
| 151 | static object * |
| 152 | exec_eval(v, start) |
| 153 | object *v; |
| 154 | int start; |
| 155 | { |
| 156 | object *str = NULL, *globals = NULL, *locals = NULL; |
Guido van Rossum | f08ab0a | 1992-03-04 16:41:41 +0000 | [diff] [blame] | 157 | char *s; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 158 | int n; |
| 159 | if (v != NULL) { |
| 160 | if (is_stringobject(v)) |
| 161 | str = v; |
| 162 | else if (is_tupleobject(v) && |
| 163 | ((n = gettuplesize(v)) == 2 || n == 3)) { |
| 164 | str = gettupleitem(v, 0); |
| 165 | globals = gettupleitem(v, 1); |
| 166 | if (n == 3) |
| 167 | locals = gettupleitem(v, 2); |
| 168 | } |
| 169 | } |
| 170 | if (str == NULL || !is_stringobject(str) || |
| 171 | globals != NULL && !is_dictobject(globals) || |
| 172 | locals != NULL && !is_dictobject(locals)) { |
| 173 | err_setstr(TypeError, |
| 174 | "exec/eval arguments must be string[,dict[,dict]]"); |
| 175 | return NULL; |
| 176 | } |
Guido van Rossum | f08ab0a | 1992-03-04 16:41:41 +0000 | [diff] [blame] | 177 | s = getstringvalue(str); |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 178 | if (strlen(s) != getstringsize(str)) { |
| 179 | err_setstr(ValueError, "embedded '\\0' in string arg"); |
| 180 | return NULL; |
| 181 | } |
Guido van Rossum | f08ab0a | 1992-03-04 16:41:41 +0000 | [diff] [blame] | 182 | if (start == eval_input) { |
| 183 | while (*s == ' ' || *s == '\t') |
| 184 | s++; |
| 185 | } |
| 186 | return run_string(s, start, globals, locals); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | static object * |
| 190 | builtin_eval(self, v) |
| 191 | object *self; |
| 192 | object *v; |
| 193 | { |
| 194 | return exec_eval(v, eval_input); |
| 195 | } |
| 196 | |
| 197 | static object * |
| 198 | builtin_exec(self, v) |
| 199 | object *self; |
| 200 | object *v; |
| 201 | { |
| 202 | return exec_eval(v, file_input); |
| 203 | } |
| 204 | |
| 205 | static object * |
Guido van Rossum | 0f61f8a | 1992-02-25 18:55:05 +0000 | [diff] [blame] | 206 | builtin_execfile(self, v) |
| 207 | object *self; |
| 208 | object *v; |
| 209 | { |
| 210 | object *str = NULL, *globals = NULL, *locals = NULL, *w; |
| 211 | FILE* fp; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 212 | char *s; |
Guido van Rossum | 0f61f8a | 1992-02-25 18:55:05 +0000 | [diff] [blame] | 213 | int n; |
| 214 | if (v != NULL) { |
| 215 | if (is_stringobject(v)) |
| 216 | str = v; |
| 217 | else if (is_tupleobject(v) && |
| 218 | ((n = gettuplesize(v)) == 2 || n == 3)) { |
| 219 | str = gettupleitem(v, 0); |
| 220 | globals = gettupleitem(v, 1); |
| 221 | if (n == 3) |
| 222 | locals = gettupleitem(v, 2); |
| 223 | } |
| 224 | } |
| 225 | if (str == NULL || !is_stringobject(str) || |
| 226 | globals != NULL && !is_dictobject(globals) || |
| 227 | locals != NULL && !is_dictobject(locals)) { |
| 228 | err_setstr(TypeError, |
| 229 | "execfile arguments must be filename[,dict[,dict]]"); |
| 230 | return NULL; |
| 231 | } |
Guido van Rossum | 2b81dc9 | 1992-08-19 16:40:53 +0000 | [diff] [blame] | 232 | s = getstringvalue(str); |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 233 | if (strlen(s) != getstringsize(str)) { |
| 234 | err_setstr(ValueError, "embedded '\\0' in string arg"); |
| 235 | return NULL; |
| 236 | } |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 237 | BGN_SAVE |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 238 | fp = fopen(s, "r"); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 239 | END_SAVE |
Guido van Rossum | 0f61f8a | 1992-02-25 18:55:05 +0000 | [diff] [blame] | 240 | if (fp == NULL) { |
| 241 | err_setstr(IOError, "execfile cannot open the file argument"); |
| 242 | return NULL; |
| 243 | } |
| 244 | w = run_file(fp, getstringvalue(str), file_input, globals, locals); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 245 | BGN_SAVE |
Guido van Rossum | 0f61f8a | 1992-02-25 18:55:05 +0000 | [diff] [blame] | 246 | fclose(fp); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 247 | END_SAVE |
Guido van Rossum | 0f61f8a | 1992-02-25 18:55:05 +0000 | [diff] [blame] | 248 | return w; |
| 249 | } |
| 250 | |
| 251 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 252 | builtin_float(self, v) |
| 253 | object *self; |
| 254 | object *v; |
| 255 | { |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 256 | number_methods *nb; |
| 257 | |
| 258 | if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
| 259 | nb->nb_float == NULL) { |
| 260 | err_setstr(TypeError, |
| 261 | "float() argument can't be converted to float"); |
| 262 | return NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 263 | } |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 264 | return (*nb->nb_float)(v); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | static object * |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 268 | builtin_getattr(self, args) |
Guido van Rossum | 33894be | 1992-01-27 16:53:09 +0000 | [diff] [blame] | 269 | object *self; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 270 | object *args; |
Guido van Rossum | 33894be | 1992-01-27 16:53:09 +0000 | [diff] [blame] | 271 | { |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 272 | object *v; |
| 273 | char *name; |
| 274 | if (!getargs(args, "(Os)", &v, &name)) |
Guido van Rossum | 33894be | 1992-01-27 16:53:09 +0000 | [diff] [blame] | 275 | return NULL; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 276 | return getattr(v, name); |
Guido van Rossum | 33894be | 1992-01-27 16:53:09 +0000 | [diff] [blame] | 277 | } |
| 278 | |
| 279 | static object * |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 280 | builtin_setattr(self, args) |
Guido van Rossum | 33894be | 1992-01-27 16:53:09 +0000 | [diff] [blame] | 281 | object *self; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 282 | object *args; |
Guido van Rossum | 33894be | 1992-01-27 16:53:09 +0000 | [diff] [blame] | 283 | { |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 284 | object *v; |
| 285 | char *name; |
| 286 | object *value; |
| 287 | if (!getargs(args, "(OsO)", &v, &name, &value)) |
Guido van Rossum | 33894be | 1992-01-27 16:53:09 +0000 | [diff] [blame] | 288 | return NULL; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 289 | if (setattr(v, name, value) != 0) |
Guido van Rossum | 33894be | 1992-01-27 16:53:09 +0000 | [diff] [blame] | 290 | return NULL; |
| 291 | INCREF(None); |
| 292 | return None; |
| 293 | } |
| 294 | |
| 295 | static object * |
Guido van Rossum | 006bcd4 | 1991-10-24 14:54:44 +0000 | [diff] [blame] | 296 | builtin_hex(self, v) |
| 297 | object *self; |
| 298 | object *v; |
| 299 | { |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 300 | number_methods *nb; |
| 301 | |
| 302 | if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
| 303 | nb->nb_hex == NULL) { |
| 304 | err_setstr(TypeError, |
| 305 | "hex() argument can't be converted to hex"); |
| 306 | return NULL; |
Guido van Rossum | 006bcd4 | 1991-10-24 14:54:44 +0000 | [diff] [blame] | 307 | } |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 308 | return (*nb->nb_hex)(v); |
Guido van Rossum | 006bcd4 | 1991-10-24 14:54:44 +0000 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 312 | builtin_input(self, v) |
| 313 | object *self; |
| 314 | object *v; |
| 315 | { |
| 316 | FILE *in = sysgetfile("stdin", stdin); |
| 317 | FILE *out = sysgetfile("stdout", stdout); |
Guido van Rossum | 22ebe2f | 1992-03-12 17:33:52 +0000 | [diff] [blame] | 318 | int c; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 319 | object *m, *d; |
| 320 | flushline(); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 321 | if (v != NULL) { |
| 322 | if (printobject(v, out, PRINT_RAW) != 0) |
| 323 | return NULL; |
| 324 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 325 | m = add_module("__main__"); |
| 326 | d = getmoduledict(m); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 327 | BGN_SAVE |
Guido van Rossum | 22ebe2f | 1992-03-12 17:33:52 +0000 | [diff] [blame] | 328 | while ((c = getc(in)) != EOF && (c == ' ' || c == '\t')) |
| 329 | ; |
| 330 | ungetc(c, in); |
Guido van Rossum | ff4949e | 1992-08-05 19:58:53 +0000 | [diff] [blame] | 331 | END_SAVE |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 332 | return run_file(in, "<stdin>", expr_input, d, d); |
| 333 | } |
| 334 | |
| 335 | static object * |
| 336 | builtin_int(self, v) |
| 337 | object *self; |
| 338 | object *v; |
| 339 | { |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 340 | number_methods *nb; |
| 341 | |
| 342 | if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
| 343 | nb->nb_int == NULL) { |
| 344 | err_setstr(TypeError, |
| 345 | "int() argument can't be converted to int"); |
| 346 | return NULL; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 347 | } |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 348 | return (*nb->nb_int)(v); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 349 | } |
| 350 | |
| 351 | static object * |
| 352 | builtin_len(self, v) |
| 353 | object *self; |
| 354 | object *v; |
| 355 | { |
| 356 | long len; |
| 357 | typeobject *tp; |
| 358 | if (v == NULL) { |
| 359 | err_setstr(TypeError, "len() without argument"); |
| 360 | return NULL; |
| 361 | } |
| 362 | tp = v->ob_type; |
| 363 | if (tp->tp_as_sequence != NULL) { |
| 364 | len = (*tp->tp_as_sequence->sq_length)(v); |
| 365 | } |
| 366 | else if (tp->tp_as_mapping != NULL) { |
| 367 | len = (*tp->tp_as_mapping->mp_length)(v); |
| 368 | } |
| 369 | else { |
| 370 | err_setstr(TypeError, "len() of unsized object"); |
| 371 | return NULL; |
| 372 | } |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 373 | if (len < 0) |
| 374 | return NULL; |
| 375 | else |
| 376 | return newintobject(len); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 377 | } |
| 378 | |
| 379 | static object * |
Guido van Rossum | d490545 | 1991-05-05 20:00:36 +0000 | [diff] [blame] | 380 | builtin_long(self, v) |
| 381 | object *self; |
| 382 | object *v; |
| 383 | { |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 384 | number_methods *nb; |
| 385 | |
| 386 | if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
| 387 | nb->nb_long == NULL) { |
| 388 | err_setstr(TypeError, |
| 389 | "long() argument can't be converted to long"); |
| 390 | return NULL; |
Guido van Rossum | d490545 | 1991-05-05 20:00:36 +0000 | [diff] [blame] | 391 | } |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 392 | return (*nb->nb_long)(v); |
Guido van Rossum | d490545 | 1991-05-05 20:00:36 +0000 | [diff] [blame] | 393 | } |
| 394 | |
| 395 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 396 | min_max(v, sign) |
| 397 | object *v; |
| 398 | int sign; |
| 399 | { |
| 400 | int i, n, cmp; |
| 401 | object *w, *x; |
| 402 | sequence_methods *sq; |
| 403 | if (v == NULL) { |
| 404 | err_setstr(TypeError, "min() or max() without argument"); |
| 405 | return NULL; |
| 406 | } |
| 407 | sq = v->ob_type->tp_as_sequence; |
| 408 | if (sq == NULL) { |
| 409 | err_setstr(TypeError, "min() or max() of non-sequence"); |
| 410 | return NULL; |
| 411 | } |
| 412 | n = (*sq->sq_length)(v); |
| 413 | if (n == 0) { |
Guido van Rossum | 50afb7a | 1991-12-10 13:52:31 +0000 | [diff] [blame] | 414 | err_setstr(ValueError, "min() or max() of empty sequence"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 415 | return NULL; |
| 416 | } |
| 417 | w = (*sq->sq_item)(v, 0); /* Implies INCREF */ |
| 418 | for (i = 1; i < n; i++) { |
| 419 | x = (*sq->sq_item)(v, i); /* Implies INCREF */ |
| 420 | cmp = cmpobject(x, w); |
| 421 | if (cmp * sign > 0) { |
| 422 | DECREF(w); |
| 423 | w = x; |
| 424 | } |
| 425 | else |
| 426 | DECREF(x); |
| 427 | } |
| 428 | return w; |
| 429 | } |
| 430 | |
| 431 | static object * |
| 432 | builtin_min(self, v) |
| 433 | object *self; |
| 434 | object *v; |
| 435 | { |
| 436 | return min_max(v, -1); |
| 437 | } |
| 438 | |
| 439 | static object * |
| 440 | builtin_max(self, v) |
| 441 | object *self; |
| 442 | object *v; |
| 443 | { |
| 444 | return min_max(v, 1); |
| 445 | } |
| 446 | |
| 447 | static object * |
Guido van Rossum | 006bcd4 | 1991-10-24 14:54:44 +0000 | [diff] [blame] | 448 | builtin_oct(self, v) |
| 449 | object *self; |
| 450 | object *v; |
| 451 | { |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 452 | number_methods *nb; |
| 453 | |
| 454 | if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
| 455 | nb->nb_oct == NULL) { |
| 456 | err_setstr(TypeError, |
| 457 | "oct() argument can't be converted to oct"); |
| 458 | return NULL; |
Guido van Rossum | 006bcd4 | 1991-10-24 14:54:44 +0000 | [diff] [blame] | 459 | } |
Guido van Rossum | 1899c2e | 1992-09-12 11:09:23 +0000 | [diff] [blame] | 460 | return (*nb->nb_oct)(v); |
Guido van Rossum | 006bcd4 | 1991-10-24 14:54:44 +0000 | [diff] [blame] | 461 | } |
| 462 | |
| 463 | static object * |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 464 | builtin_open(self, args) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 465 | object *self; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 466 | object *args; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 467 | { |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 468 | char *name, *mode; |
| 469 | if (!getargs(args, "(ss)", &name, &mode)) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 470 | return NULL; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 471 | return newfileobject(name, mode); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 472 | } |
| 473 | |
| 474 | static object * |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 475 | builtin_ord(self, args) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 476 | object *self; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 477 | object *args; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 478 | { |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 479 | char *s; |
| 480 | int len; |
| 481 | if (!getargs(args, "s#", &s, &len)) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 482 | return NULL; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 483 | if (len != 1) { |
Guido van Rossum | 50afb7a | 1991-12-10 13:52:31 +0000 | [diff] [blame] | 484 | err_setstr(ValueError, "ord() arg must have length 1"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 485 | return NULL; |
| 486 | } |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 487 | return newintobject((long)(s[0] & 0xff)); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 488 | } |
| 489 | |
| 490 | static object * |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 491 | builtin_pow(self, args) |
Guido van Rossum | d490545 | 1991-05-05 20:00:36 +0000 | [diff] [blame] | 492 | object *self; |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 493 | object *args; |
Guido van Rossum | d490545 | 1991-05-05 20:00:36 +0000 | [diff] [blame] | 494 | { |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 495 | object *v, *w, *x; |
Guido van Rossum | 94390a4 | 1992-08-14 15:14:30 +0000 | [diff] [blame] | 496 | if (!getargs(args, "(OO)", &v, &w)) |
Guido van Rossum | d490545 | 1991-05-05 20:00:36 +0000 | [diff] [blame] | 497 | return NULL; |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 498 | if (v->ob_type->tp_as_number == NULL || |
| 499 | w->ob_type->tp_as_number == NULL) { |
Guido van Rossum | d490545 | 1991-05-05 20:00:36 +0000 | [diff] [blame] | 500 | err_setstr(TypeError, "pow() requires numeric arguments"); |
| 501 | return NULL; |
| 502 | } |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 503 | if (coerce(&v, &w) != 0) |
| 504 | return NULL; |
| 505 | x = (*v->ob_type->tp_as_number->nb_power)(v, w); |
| 506 | DECREF(v); |
| 507 | DECREF(w); |
| 508 | return x; |
Guido van Rossum | d490545 | 1991-05-05 20:00:36 +0000 | [diff] [blame] | 509 | } |
| 510 | |
| 511 | static object * |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 512 | builtin_range(self, v) |
| 513 | object *self; |
| 514 | object *v; |
| 515 | { |
| 516 | static char *errmsg = "range() requires 1-3 int arguments"; |
| 517 | int i, n; |
| 518 | long ilow, ihigh, istep; |
| 519 | if (v != NULL && is_intobject(v)) { |
| 520 | ilow = 0; ihigh = getintvalue(v); istep = 1; |
| 521 | } |
| 522 | else if (v == NULL || !is_tupleobject(v)) { |
| 523 | err_setstr(TypeError, errmsg); |
| 524 | return NULL; |
| 525 | } |
| 526 | else { |
| 527 | n = gettuplesize(v); |
| 528 | if (n < 1 || n > 3) { |
| 529 | err_setstr(TypeError, errmsg); |
| 530 | return NULL; |
| 531 | } |
| 532 | for (i = 0; i < n; i++) { |
| 533 | if (!is_intobject(gettupleitem(v, i))) { |
| 534 | err_setstr(TypeError, errmsg); |
| 535 | return NULL; |
| 536 | } |
| 537 | } |
| 538 | if (n == 3) { |
| 539 | istep = getintvalue(gettupleitem(v, 2)); |
| 540 | --n; |
| 541 | } |
| 542 | else |
| 543 | istep = 1; |
| 544 | ihigh = getintvalue(gettupleitem(v, --n)); |
| 545 | if (n > 0) |
| 546 | ilow = getintvalue(gettupleitem(v, 0)); |
| 547 | else |
| 548 | ilow = 0; |
| 549 | } |
| 550 | if (istep == 0) { |
Guido van Rossum | 50afb7a | 1991-12-10 13:52:31 +0000 | [diff] [blame] | 551 | err_setstr(ValueError, "zero step for range()"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 552 | return NULL; |
| 553 | } |
| 554 | /* XXX ought to check overflow of subtraction */ |
| 555 | if (istep > 0) |
| 556 | n = (ihigh - ilow + istep - 1) / istep; |
| 557 | else |
| 558 | n = (ihigh - ilow + istep + 1) / istep; |
| 559 | if (n < 0) |
| 560 | n = 0; |
| 561 | v = newlistobject(n); |
| 562 | if (v == NULL) |
| 563 | return NULL; |
| 564 | for (i = 0; i < n; i++) { |
| 565 | object *w = newintobject(ilow); |
| 566 | if (w == NULL) { |
| 567 | DECREF(v); |
| 568 | return NULL; |
| 569 | } |
| 570 | setlistitem(v, i, w); |
| 571 | ilow += istep; |
| 572 | } |
| 573 | return v; |
| 574 | } |
| 575 | |
| 576 | static object * |
| 577 | builtin_raw_input(self, v) |
| 578 | object *self; |
| 579 | object *v; |
| 580 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 581 | FILE *out = sysgetfile("stdout", stdout); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 582 | flushline(); |
Guido van Rossum | 9093361 | 1991-06-07 16:10:43 +0000 | [diff] [blame] | 583 | if (v != NULL) { |
| 584 | if (printobject(v, out, PRINT_RAW) != 0) |
| 585 | return NULL; |
| 586 | } |
Guido van Rossum | 26203aa | 1991-04-04 15:20:41 +0000 | [diff] [blame] | 587 | return filegetline(sysget("stdin"), -1); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 588 | } |
| 589 | |
| 590 | static object * |
| 591 | builtin_reload(self, v) |
| 592 | object *self; |
| 593 | object *v; |
| 594 | { |
| 595 | return reload_module(v); |
| 596 | } |
| 597 | |
| 598 | static object * |
| 599 | builtin_type(self, v) |
| 600 | object *self; |
| 601 | object *v; |
| 602 | { |
| 603 | if (v == NULL) { |
| 604 | err_setstr(TypeError, "type() requres an argument"); |
| 605 | return NULL; |
| 606 | } |
| 607 | v = (object *)v->ob_type; |
| 608 | INCREF(v); |
| 609 | return v; |
| 610 | } |
| 611 | |
| 612 | static struct methodlist builtin_methods[] = { |
Guido van Rossum | c02e15c | 1991-12-16 13:03:00 +0000 | [diff] [blame] | 613 | {"abs", builtin_abs}, |
| 614 | {"apply", builtin_apply}, |
| 615 | {"chr", builtin_chr}, |
Guido van Rossum | 04691fc | 1992-08-12 15:35:34 +0000 | [diff] [blame] | 616 | {"coerce", builtin_coerce}, |
Guido van Rossum | c02e15c | 1991-12-16 13:03:00 +0000 | [diff] [blame] | 617 | {"dir", builtin_dir}, |
| 618 | {"divmod", builtin_divmod}, |
| 619 | {"eval", builtin_eval}, |
| 620 | {"exec", builtin_exec}, |
Guido van Rossum | 0f61f8a | 1992-02-25 18:55:05 +0000 | [diff] [blame] | 621 | {"execfile", builtin_execfile}, |
Guido van Rossum | c02e15c | 1991-12-16 13:03:00 +0000 | [diff] [blame] | 622 | {"float", builtin_float}, |
Guido van Rossum | 33894be | 1992-01-27 16:53:09 +0000 | [diff] [blame] | 623 | {"getattr", builtin_getattr}, |
Guido van Rossum | c02e15c | 1991-12-16 13:03:00 +0000 | [diff] [blame] | 624 | {"hex", builtin_hex}, |
| 625 | {"input", builtin_input}, |
| 626 | {"int", builtin_int}, |
| 627 | {"len", builtin_len}, |
| 628 | {"long", builtin_long}, |
| 629 | {"max", builtin_max}, |
| 630 | {"min", builtin_min}, |
| 631 | {"oct", builtin_oct}, |
Guido van Rossum | 5778949 | 1992-02-05 11:17:52 +0000 | [diff] [blame] | 632 | {"open", builtin_open}, |
Guido van Rossum | c02e15c | 1991-12-16 13:03:00 +0000 | [diff] [blame] | 633 | {"ord", builtin_ord}, |
| 634 | {"pow", builtin_pow}, |
| 635 | {"range", builtin_range}, |
| 636 | {"raw_input", builtin_raw_input}, |
| 637 | {"reload", builtin_reload}, |
Guido van Rossum | 33894be | 1992-01-27 16:53:09 +0000 | [diff] [blame] | 638 | {"setattr", builtin_setattr}, |
Guido van Rossum | c02e15c | 1991-12-16 13:03:00 +0000 | [diff] [blame] | 639 | {"type", builtin_type}, |
| 640 | {NULL, NULL}, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 641 | }; |
| 642 | |
| 643 | static object *builtin_dict; |
| 644 | |
| 645 | object * |
| 646 | getbuiltin(name) |
Guido van Rossum | a57fb01 | 1991-08-16 08:54:58 +0000 | [diff] [blame] | 647 | object *name; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 648 | { |
Guido van Rossum | a57fb01 | 1991-08-16 08:54:58 +0000 | [diff] [blame] | 649 | return dict2lookup(builtin_dict, name); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 650 | } |
| 651 | |
| 652 | /* Predefined exceptions */ |
| 653 | |
Guido van Rossum | fb905c3 | 1991-12-16 15:42:38 +0000 | [diff] [blame] | 654 | object *AttributeError; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 655 | object *EOFError; |
Guido van Rossum | fb905c3 | 1991-12-16 15:42:38 +0000 | [diff] [blame] | 656 | object *IOError; |
Guido van Rossum | ed7711b | 1991-12-24 13:24:53 +0000 | [diff] [blame] | 657 | object *ImportError; |
Guido van Rossum | fb905c3 | 1991-12-16 15:42:38 +0000 | [diff] [blame] | 658 | object *IndexError; |
| 659 | object *KeyError; |
| 660 | object *KeyboardInterrupt; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 661 | object *MemoryError; |
| 662 | object *NameError; |
Guido van Rossum | 50afb7a | 1991-12-10 13:52:31 +0000 | [diff] [blame] | 663 | object *OverflowError; |
Guido van Rossum | fb905c3 | 1991-12-16 15:42:38 +0000 | [diff] [blame] | 664 | object *RuntimeError; |
Guido van Rossum | c02e15c | 1991-12-16 13:03:00 +0000 | [diff] [blame] | 665 | object *SyntaxError; |
Guido van Rossum | fb905c3 | 1991-12-16 15:42:38 +0000 | [diff] [blame] | 666 | object *SystemError; |
Guido van Rossum | 768a3f0 | 1991-12-31 13:13:47 +0000 | [diff] [blame] | 667 | object *SystemExit; |
Guido van Rossum | fb905c3 | 1991-12-16 15:42:38 +0000 | [diff] [blame] | 668 | object *TypeError; |
| 669 | object *ValueError; |
| 670 | object *ZeroDivisionError; |
Guido van Rossum | 50afb7a | 1991-12-10 13:52:31 +0000 | [diff] [blame] | 671 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 672 | static object * |
Guido van Rossum | fb905c3 | 1991-12-16 15:42:38 +0000 | [diff] [blame] | 673 | newstdexception(name) |
| 674 | char *name; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 675 | { |
Guido van Rossum | fb905c3 | 1991-12-16 15:42:38 +0000 | [diff] [blame] | 676 | object *v = newstringobject(name); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 677 | if (v == NULL || dictinsert(builtin_dict, name, v) != 0) |
| 678 | fatal("no mem for new standard exception"); |
| 679 | return v; |
| 680 | } |
| 681 | |
| 682 | static void |
| 683 | initerrors() |
| 684 | { |
Guido van Rossum | ed7711b | 1991-12-24 13:24:53 +0000 | [diff] [blame] | 685 | AttributeError = newstdexception("AttributeError"); |
Guido van Rossum | fb905c3 | 1991-12-16 15:42:38 +0000 | [diff] [blame] | 686 | EOFError = newstdexception("EOFError"); |
Guido van Rossum | ed7711b | 1991-12-24 13:24:53 +0000 | [diff] [blame] | 687 | IOError = newstdexception("IOError"); |
| 688 | ImportError = newstdexception("ImportError"); |
| 689 | IndexError = newstdexception("IndexError"); |
| 690 | KeyError = newstdexception("KeyError"); |
| 691 | KeyboardInterrupt = newstdexception("KeyboardInterrupt"); |
Guido van Rossum | fb905c3 | 1991-12-16 15:42:38 +0000 | [diff] [blame] | 692 | MemoryError = newstdexception("MemoryError"); |
| 693 | NameError = newstdexception("NameError"); |
Guido van Rossum | fb905c3 | 1991-12-16 15:42:38 +0000 | [diff] [blame] | 694 | OverflowError = newstdexception("OverflowError"); |
Guido van Rossum | ed7711b | 1991-12-24 13:24:53 +0000 | [diff] [blame] | 695 | RuntimeError = newstdexception("RuntimeError"); |
Guido van Rossum | fb905c3 | 1991-12-16 15:42:38 +0000 | [diff] [blame] | 696 | SyntaxError = newstdexception("SyntaxError"); |
Guido van Rossum | ed7711b | 1991-12-24 13:24:53 +0000 | [diff] [blame] | 697 | SystemError = newstdexception("SystemError"); |
Guido van Rossum | 768a3f0 | 1991-12-31 13:13:47 +0000 | [diff] [blame] | 698 | SystemExit = newstdexception("SystemExit"); |
Guido van Rossum | ed7711b | 1991-12-24 13:24:53 +0000 | [diff] [blame] | 699 | TypeError = newstdexception("TypeError"); |
| 700 | ValueError = newstdexception("ValueError"); |
| 701 | ZeroDivisionError = newstdexception("ZeroDivisionError"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 702 | } |
| 703 | |
| 704 | void |
| 705 | initbuiltin() |
| 706 | { |
| 707 | object *m; |
| 708 | m = initmodule("builtin", builtin_methods); |
| 709 | builtin_dict = getmoduledict(m); |
| 710 | INCREF(builtin_dict); |
| 711 | initerrors(); |
| 712 | (void) dictinsert(builtin_dict, "None", None); |
| 713 | } |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 714 | |
| 715 | /* Coerce two numeric types to the "larger" one. |
| 716 | Increment the reference count on each argument. |
| 717 | Return -1 and raise an exception if no coercion is possible |
| 718 | (and then no reference count is incremented). |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 719 | */ |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 720 | |
| 721 | int |
| 722 | coerce(pv, pw) |
| 723 | object **pv, **pw; |
| 724 | { |
| 725 | register object *v = *pv; |
| 726 | register object *w = *pw; |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 727 | int res; |
| 728 | |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 729 | if (v->ob_type == w->ob_type) { |
| 730 | INCREF(v); |
| 731 | INCREF(w); |
| 732 | return 0; |
| 733 | } |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 734 | if (v->ob_type->tp_as_number && v->ob_type->tp_as_number->nb_coerce) { |
| 735 | res = (*v->ob_type->tp_as_number->nb_coerce)(pv, pw); |
| 736 | if (res <= 0) |
| 737 | return res; |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 738 | } |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 739 | if (w->ob_type->tp_as_number && w->ob_type->tp_as_number->nb_coerce) { |
| 740 | res = (*w->ob_type->tp_as_number->nb_coerce)(pw, pv); |
| 741 | if (res <= 0) |
| 742 | return res; |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 743 | } |
Guido van Rossum | e6eefc2 | 1992-08-14 12:06:52 +0000 | [diff] [blame] | 744 | err_setstr(TypeError, "number coercion failed"); |
| 745 | return -1; |
Guido van Rossum | c6bb8f7 | 1991-07-01 18:42:41 +0000 | [diff] [blame] | 746 | } |