Mercurial > cpython-lru_cache-weakref
annotate Python/bltinmodule.c @ 1073:2c0432fcc270 legacy-trunk
Modified most (but not yet all) I/O to always go through sys.stdout or
sys.stderr or sys.stdin, and to work with any object as long as it has
a write() (respectively readline()) methods. Some functions that took
a FILE* argument now take an object* argument.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Fri, 25 Sep 1992 21:59:05 +0000 |
| parents | 2ed511171809 |
| children | e4c6a0dd5c2b |
| rev | line source |
|---|---|
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1 /*********************************************************** |
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2 Copyright 1991, 1992 by Stichting Mathematisch Centrum, Amsterdam, The |
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3 Netherlands. |
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4 |
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5 All Rights Reserved |
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6 |
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7 Permission to use, copy, modify, and distribute this software and its |
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8 documentation for any purpose and without fee is hereby granted, |
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9 provided that the above copyright notice appear in all copies and that |
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10 both that copyright notice and this permission notice appear in |
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11 supporting documentation, and that the names of Stichting Mathematisch |
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12 Centrum or CWI not be used in advertising or publicity pertaining to |
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13 distribution of the software without specific, written prior permission. |
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14 |
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15 STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO |
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16 THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND |
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17 FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE |
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18 FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
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21 OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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22 |
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23 ******************************************************************/ |
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24 |
| 86 | 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" | |
| 119 | 33 #include "bltinmodule.h" |
| 86 | 34 #include "import.h" |
| 35 #include "pythonrun.h" | |
| 36 #include "ceval.h" | |
| 37 #include "modsupport.h" | |
| 38 | |
| 39 static object * | |
| 40 builtin_abs(self, v) | |
| 41 object *self; | |
| 42 object *v; | |
| 43 { | |
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44 number_methods *nm; |
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45 if (v == NULL || (nm = v->ob_type->tp_as_number) == NULL) { |
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46 err_setstr(TypeError, "abs() requires numeric argument"); |
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47 return NULL; |
| 86 | 48 } |
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49 return (*nm->nb_absolute)(v); |
| 86 | 50 } |
| 51 | |
| 52 static object * | |
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53 builtin_apply(self, args) |
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54 object *self; |
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55 object *args; |
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56 { |
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57 object *func, *arglist; |
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58 if (!getargs(args, "(OO)", &func, &arglist)) |
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59 return NULL; |
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60 return call_object(func, arglist); |
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61 } |
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62 |
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63 static object * |
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64 builtin_chr(self, args) |
| 86 | 65 object *self; |
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66 object *args; |
| 86 | 67 { |
| 68 long x; | |
| 69 char s[1]; | |
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70 if (!getargs(args, "l", &x)) |
| 86 | 71 return NULL; |
| 72 if (x < 0 || x >= 256) { | |
| 463 | 73 err_setstr(ValueError, "chr() arg not in range(256)"); |
| 86 | 74 return NULL; |
| 75 } | |
| 76 s[0] = x; | |
| 77 return newsizedstringobject(s, 1); | |
| 78 } | |
| 79 | |
| 80 static object * | |
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81 builtin_coerce(self, args) |
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82 object *self; |
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83 object *args; |
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84 { |
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85 object *v, *w; |
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86 object *res; |
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87 |
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88 if (!getargs(args, "(OO)", &v, &w)) |
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89 return NULL; |
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90 if (coerce(&v, &w) < 0) |
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91 return NULL; |
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92 res = mkvalue("(OO)", v, w); |
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93 DECREF(v); |
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94 DECREF(w); |
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95 return res; |
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96 } |
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97 |
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98 static object * |
| 86 | 99 builtin_dir(self, v) |
| 100 object *self; | |
| 101 object *v; | |
| 102 { | |
| 103 object *d; | |
| 104 if (v == NULL) { | |
| 105 d = getlocals(); | |
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106 INCREF(d); |
| 86 | 107 } |
| 108 else { | |
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109 d = getattr(v, "__dict__"); |
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110 if (d == NULL) { |
| 86 | 111 err_setstr(TypeError, |
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112 "dir() argument must have __dict__ attribute"); |
| 86 | 113 return NULL; |
| 114 } | |
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115 } |
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116 if (is_dictobject(d)) { |
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117 v = getdictkeys(d); |
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118 if (sortlist(v) != 0) { |
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119 DECREF(v); |
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120 v = NULL; |
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121 } |
| 86 | 122 } |
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123 else { |
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124 v = newlistobject(0); |
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125 } |
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126 DECREF(d); |
| 86 | 127 return v; |
| 128 } | |
| 129 | |
| 130 static object * | |
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131 builtin_divmod(self, args) |
| 86 | 132 object *self; |
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133 object *args; |
| 86 | 134 { |
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135 object *v, *w, *x; |
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136 if (!getargs(args, "(OO)", &v, &w)) |
| 86 | 137 return NULL; |
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138 if (v->ob_type->tp_as_number == NULL || |
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139 w->ob_type->tp_as_number == NULL) { |
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140 err_setstr(TypeError, "divmod() requires numeric arguments"); |
| 86 | 141 return NULL; |
| 142 } | |
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143 if (coerce(&v, &w) != 0) |
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144 return NULL; |
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145 x = (*v->ob_type->tp_as_number->nb_divmod)(v, w); |
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146 DECREF(v); |
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147 DECREF(w); |
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148 return x; |
| 86 | 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; | |
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157 char *s; |
| 86 | 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 } | |
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177 s = getstringvalue(str); |
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178 if (strlen(s) != getstringsize(str)) { |
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179 err_setstr(ValueError, "embedded '\\0' in string arg"); |
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180 return NULL; |
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181 } |
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182 if (start == eval_input) { |
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183 while (*s == ' ' || *s == '\t') |
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184 s++; |
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185 } |
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186 return run_string(s, start, globals, locals); |
| 86 | 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 * | |
| 673 | 206 builtin_execfile(self, v) |
| 207 object *self; | |
| 208 object *v; | |
| 209 { | |
| 210 object *str = NULL, *globals = NULL, *locals = NULL, *w; | |
| 211 FILE* fp; | |
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212 char *s; |
| 673 | 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 } | |
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232 s = getstringvalue(str); |
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233 if (strlen(s) != getstringsize(str)) { |
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234 err_setstr(ValueError, "embedded '\\0' in string arg"); |
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235 return NULL; |
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236 } |
| 926 | 237 BGN_SAVE |
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238 fp = fopen(s, "r"); |
| 926 | 239 END_SAVE |
| 673 | 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); | |
| 926 | 245 BGN_SAVE |
| 673 | 246 fclose(fp); |
| 926 | 247 END_SAVE |
| 673 | 248 return w; |
| 249 } | |
| 250 | |
| 251 static object * | |
| 86 | 252 builtin_float(self, v) |
| 253 object *self; | |
| 254 object *v; | |
| 255 { | |
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256 number_methods *nb; |
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257 |
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258 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
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259 nb->nb_float == NULL) { |
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260 err_setstr(TypeError, |
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261 "float() argument can't be converted to float"); |
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262 return NULL; |
|
223
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263 } |
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264 return (*nb->nb_float)(v); |
| 86 | 265 } |
| 266 | |
| 267 static object * | |
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268 builtin_getattr(self, args) |
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269 object *self; |
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270 object *args; |
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271 { |
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272 object *v; |
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273 char *name; |
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274 if (!getargs(args, "(Os)", &v, &name)) |
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275 return NULL; |
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276 return getattr(v, name); |
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277 } |
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278 |
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279 static object * |
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280 builtin_setattr(self, args) |
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281 object *self; |
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282 object *args; |
|
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283 { |
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284 object *v; |
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285 char *name; |
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286 object *value; |
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287 if (!getargs(args, "(OsO)", &v, &name, &value)) |
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288 return NULL; |
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289 if (setattr(v, name, value) != 0) |
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290 return NULL; |
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291 INCREF(None); |
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292 return None; |
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293 } |
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294 |
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295 static object * |
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296 builtin_hex(self, v) |
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297 object *self; |
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298 object *v; |
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299 { |
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300 number_methods *nb; |
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301 |
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302 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
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303 nb->nb_hex == NULL) { |
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304 err_setstr(TypeError, |
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305 "hex() argument can't be converted to hex"); |
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306 return NULL; |
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307 } |
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308 return (*nb->nb_hex)(v); |
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309 } |
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310 |
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311 static object *builtin_raw_input PROTO((object *, object *)); |
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312 |
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313 static object * |
| 86 | 314 builtin_input(self, v) |
| 315 object *self; | |
| 316 object *v; | |
| 317 { | |
|
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318 object *line = builtin_raw_input(self, v); |
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319 if (line == NULL) |
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320 return line; |
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321 v = exec_eval(line, eval_input); |
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322 DECREF(line); |
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323 return v; |
| 86 | 324 } |
| 325 | |
| 326 static object * | |
| 327 builtin_int(self, v) | |
| 328 object *self; | |
| 329 object *v; | |
| 330 { | |
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331 number_methods *nb; |
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332 |
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333 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
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334 nb->nb_int == NULL) { |
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335 err_setstr(TypeError, |
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336 "int() argument can't be converted to int"); |
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337 return NULL; |
| 86 | 338 } |
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339 return (*nb->nb_int)(v); |
| 86 | 340 } |
| 341 | |
| 342 static object * | |
| 343 builtin_len(self, v) | |
| 344 object *self; | |
| 345 object *v; | |
| 346 { | |
| 347 long len; | |
| 348 typeobject *tp; | |
| 349 if (v == NULL) { | |
| 350 err_setstr(TypeError, "len() without argument"); | |
| 351 return NULL; | |
| 352 } | |
| 353 tp = v->ob_type; | |
| 354 if (tp->tp_as_sequence != NULL) { | |
| 355 len = (*tp->tp_as_sequence->sq_length)(v); | |
| 356 } | |
| 357 else if (tp->tp_as_mapping != NULL) { | |
| 358 len = (*tp->tp_as_mapping->mp_length)(v); | |
| 359 } | |
| 360 else { | |
| 361 err_setstr(TypeError, "len() of unsized object"); | |
| 362 return NULL; | |
| 363 } | |
|
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364 if (len < 0) |
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365 return NULL; |
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366 else |
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367 return newintobject(len); |
| 86 | 368 } |
| 369 | |
| 370 static object * | |
|
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371 builtin_long(self, v) |
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372 object *self; |
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373 object *v; |
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374 { |
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375 number_methods *nb; |
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376 |
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377 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
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378 nb->nb_long == NULL) { |
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379 err_setstr(TypeError, |
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380 "long() argument can't be converted to long"); |
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381 return NULL; |
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382 } |
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383 return (*nb->nb_long)(v); |
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384 } |
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385 |
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386 static object * |
| 86 | 387 min_max(v, sign) |
| 388 object *v; | |
| 389 int sign; | |
| 390 { | |
| 391 int i, n, cmp; | |
| 392 object *w, *x; | |
| 393 sequence_methods *sq; | |
| 394 if (v == NULL) { | |
| 395 err_setstr(TypeError, "min() or max() without argument"); | |
| 396 return NULL; | |
| 397 } | |
| 398 sq = v->ob_type->tp_as_sequence; | |
| 399 if (sq == NULL) { | |
| 400 err_setstr(TypeError, "min() or max() of non-sequence"); | |
| 401 return NULL; | |
| 402 } | |
| 403 n = (*sq->sq_length)(v); | |
| 404 if (n == 0) { | |
| 463 | 405 err_setstr(ValueError, "min() or max() of empty sequence"); |
| 86 | 406 return NULL; |
| 407 } | |
| 408 w = (*sq->sq_item)(v, 0); /* Implies INCREF */ | |
| 409 for (i = 1; i < n; i++) { | |
| 410 x = (*sq->sq_item)(v, i); /* Implies INCREF */ | |
| 411 cmp = cmpobject(x, w); | |
| 412 if (cmp * sign > 0) { | |
| 413 DECREF(w); | |
| 414 w = x; | |
| 415 } | |
| 416 else | |
| 417 DECREF(x); | |
| 418 } | |
| 419 return w; | |
| 420 } | |
| 421 | |
| 422 static object * | |
| 423 builtin_min(self, v) | |
| 424 object *self; | |
| 425 object *v; | |
| 426 { | |
| 427 return min_max(v, -1); | |
| 428 } | |
| 429 | |
| 430 static object * | |
| 431 builtin_max(self, v) | |
| 432 object *self; | |
| 433 object *v; | |
| 434 { | |
| 435 return min_max(v, 1); | |
| 436 } | |
| 437 | |
| 438 static object * | |
|
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439 builtin_oct(self, v) |
|
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440 object *self; |
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441 object *v; |
|
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442 { |
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443 number_methods *nb; |
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444 |
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445 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
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446 nb->nb_oct == NULL) { |
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447 err_setstr(TypeError, |
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448 "oct() argument can't be converted to oct"); |
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449 return NULL; |
|
404
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450 } |
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451 return (*nb->nb_oct)(v); |
|
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452 } |
|
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453 |
|
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454 static object * |
|
959
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455 builtin_open(self, args) |
| 86 | 456 object *self; |
|
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457 object *args; |
| 86 | 458 { |
|
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459 char *name, *mode; |
|
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460 if (!getargs(args, "(ss)", &name, &mode)) |
| 86 | 461 return NULL; |
|
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462 return newfileobject(name, mode); |
| 86 | 463 } |
| 464 | |
| 465 static object * | |
|
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466 builtin_ord(self, args) |
| 86 | 467 object *self; |
|
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468 object *args; |
| 86 | 469 { |
|
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470 char *s; |
|
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471 int len; |
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472 if (!getargs(args, "s#", &s, &len)) |
| 86 | 473 return NULL; |
|
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474 if (len != 1) { |
| 463 | 475 err_setstr(ValueError, "ord() arg must have length 1"); |
| 86 | 476 return NULL; |
| 477 } | |
|
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478 return newintobject((long)(s[0] & 0xff)); |
| 86 | 479 } |
| 480 | |
| 481 static object * | |
|
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482 builtin_pow(self, args) |
|
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483 object *self; |
|
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484 object *args; |
|
223
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485 { |
|
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486 object *v, *w, *x; |
|
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487 if (!getargs(args, "(OO)", &v, &w)) |
|
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488 return NULL; |
|
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489 if (v->ob_type->tp_as_number == NULL || |
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490 w->ob_type->tp_as_number == NULL) { |
|
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491 err_setstr(TypeError, "pow() requires numeric arguments"); |
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492 return NULL; |
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493 } |
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494 if (coerce(&v, &w) != 0) |
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495 return NULL; |
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496 x = (*v->ob_type->tp_as_number->nb_power)(v, w); |
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497 DECREF(v); |
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498 DECREF(w); |
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499 return x; |
|
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500 } |
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501 |
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502 static object * |
| 86 | 503 builtin_range(self, v) |
| 504 object *self; | |
| 505 object *v; | |
| 506 { | |
| 507 static char *errmsg = "range() requires 1-3 int arguments"; | |
| 508 int i, n; | |
| 509 long ilow, ihigh, istep; | |
| 510 if (v != NULL && is_intobject(v)) { | |
| 511 ilow = 0; ihigh = getintvalue(v); istep = 1; | |
| 512 } | |
| 513 else if (v == NULL || !is_tupleobject(v)) { | |
| 514 err_setstr(TypeError, errmsg); | |
| 515 return NULL; | |
| 516 } | |
| 517 else { | |
| 518 n = gettuplesize(v); | |
| 519 if (n < 1 || n > 3) { | |
| 520 err_setstr(TypeError, errmsg); | |
| 521 return NULL; | |
| 522 } | |
| 523 for (i = 0; i < n; i++) { | |
| 524 if (!is_intobject(gettupleitem(v, i))) { | |
| 525 err_setstr(TypeError, errmsg); | |
| 526 return NULL; | |
| 527 } | |
| 528 } | |
| 529 if (n == 3) { | |
| 530 istep = getintvalue(gettupleitem(v, 2)); | |
| 531 --n; | |
| 532 } | |
| 533 else | |
| 534 istep = 1; | |
| 535 ihigh = getintvalue(gettupleitem(v, --n)); | |
| 536 if (n > 0) | |
| 537 ilow = getintvalue(gettupleitem(v, 0)); | |
| 538 else | |
| 539 ilow = 0; | |
| 540 } | |
| 541 if (istep == 0) { | |
| 463 | 542 err_setstr(ValueError, "zero step for range()"); |
| 86 | 543 return NULL; |
| 544 } | |
| 545 /* XXX ought to check overflow of subtraction */ | |
| 546 if (istep > 0) | |
| 547 n = (ihigh - ilow + istep - 1) / istep; | |
| 548 else | |
| 549 n = (ihigh - ilow + istep + 1) / istep; | |
| 550 if (n < 0) | |
| 551 n = 0; | |
| 552 v = newlistobject(n); | |
| 553 if (v == NULL) | |
| 554 return NULL; | |
| 555 for (i = 0; i < n; i++) { | |
| 556 object *w = newintobject(ilow); | |
| 557 if (w == NULL) { | |
| 558 DECREF(v); | |
| 559 return NULL; | |
| 560 } | |
| 561 setlistitem(v, i, w); | |
| 562 ilow += istep; | |
| 563 } | |
| 564 return v; | |
| 565 } | |
| 566 | |
| 567 static object * | |
| 568 builtin_raw_input(self, v) | |
| 569 object *self; | |
| 570 object *v; | |
| 571 { | |
|
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572 object *f = sysget("stdout"); |
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573 if (f == NULL) { |
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574 err_setstr(RuntimeError, "lost sys.stdout"); |
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575 return NULL; |
|
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576 } |
| 86 | 577 flushline(); |
|
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578 if (v != NULL) { |
|
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579 if (writeobject(v, f, PRINT_RAW) != 0) |
|
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580 return NULL; |
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581 } |
|
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|
582 return filegetline(sysget("stdin"), -1); |
| 86 | 583 } |
| 584 | |
| 585 static object * | |
| 586 builtin_reload(self, v) | |
| 587 object *self; | |
| 588 object *v; | |
| 589 { | |
| 590 return reload_module(v); | |
| 591 } | |
| 592 | |
| 593 static object * | |
| 594 builtin_type(self, v) | |
| 595 object *self; | |
| 596 object *v; | |
| 597 { | |
| 598 if (v == NULL) { | |
| 599 err_setstr(TypeError, "type() requres an argument"); | |
| 600 return NULL; | |
| 601 } | |
| 602 v = (object *)v->ob_type; | |
| 603 INCREF(v); | |
| 604 return v; | |
| 605 } | |
| 606 | |
| 607 static struct methodlist builtin_methods[] = { | |
|
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608 {"abs", builtin_abs}, |
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609 {"apply", builtin_apply}, |
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610 {"chr", builtin_chr}, |
|
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611 {"coerce", builtin_coerce}, |
|
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612 {"dir", builtin_dir}, |
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613 {"divmod", builtin_divmod}, |
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614 {"eval", builtin_eval}, |
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615 {"exec", builtin_exec}, |
| 673 | 616 {"execfile", builtin_execfile}, |
|
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617 {"float", builtin_float}, |
|
644
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618 {"getattr", builtin_getattr}, |
|
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619 {"hex", builtin_hex}, |
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620 {"input", builtin_input}, |
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621 {"int", builtin_int}, |
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622 {"len", builtin_len}, |
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623 {"long", builtin_long}, |
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624 {"max", builtin_max}, |
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625 {"min", builtin_min}, |
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626 {"oct", builtin_oct}, |
|
662
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Get rid of comment about open().
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627 {"open", builtin_open}, |
|
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628 {"ord", builtin_ord}, |
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629 {"pow", builtin_pow}, |
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630 {"range", builtin_range}, |
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631 {"raw_input", builtin_raw_input}, |
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632 {"reload", builtin_reload}, |
|
644
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633 {"setattr", builtin_setattr}, |
|
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634 {"type", builtin_type}, |
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635 {NULL, NULL}, |
| 86 | 636 }; |
| 637 | |
| 638 static object *builtin_dict; | |
| 639 | |
| 640 object * | |
| 641 getbuiltin(name) | |
|
332
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642 object *name; |
| 86 | 643 { |
|
332
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644 return dict2lookup(builtin_dict, name); |
| 86 | 645 } |
| 646 | |
| 647 /* Predefined exceptions */ | |
| 648 | |
| 495 | 649 object *AttributeError; |
| 86 | 650 object *EOFError; |
| 495 | 651 object *IOError; |
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652 object *ImportError; |
| 495 | 653 object *IndexError; |
| 654 object *KeyError; | |
| 655 object *KeyboardInterrupt; | |
| 86 | 656 object *MemoryError; |
| 657 object *NameError; | |
| 495 | 658 object *OverflowError; |
| 659 object *RuntimeError; | |
| 660 object *SyntaxError; | |
| 86 | 661 object *SystemError; |
| 545 | 662 object *SystemExit; |
| 495 | 663 object *TypeError; |
| 664 object *ValueError; | |
| 463 | 665 object *ZeroDivisionError; |
| 666 | |
| 86 | 667 static object * |
| 495 | 668 newstdexception(name) |
| 669 char *name; | |
| 86 | 670 { |
| 495 | 671 object *v = newstringobject(name); |
| 86 | 672 if (v == NULL || dictinsert(builtin_dict, name, v) != 0) |
| 673 fatal("no mem for new standard exception"); | |
| 674 return v; | |
| 675 } | |
| 676 | |
| 677 static void | |
| 678 initerrors() | |
| 679 { | |
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680 AttributeError = newstdexception("AttributeError"); |
| 495 | 681 EOFError = newstdexception("EOFError"); |
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682 IOError = newstdexception("IOError"); |
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683 ImportError = newstdexception("ImportError"); |
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684 IndexError = newstdexception("IndexError"); |
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685 KeyError = newstdexception("KeyError"); |
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686 KeyboardInterrupt = newstdexception("KeyboardInterrupt"); |
| 495 | 687 MemoryError = newstdexception("MemoryError"); |
| 688 NameError = newstdexception("NameError"); | |
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689 OverflowError = newstdexception("OverflowError"); |
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690 RuntimeError = newstdexception("RuntimeError"); |
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691 SyntaxError = newstdexception("SyntaxError"); |
| 495 | 692 SystemError = newstdexception("SystemError"); |
| 545 | 693 SystemExit = newstdexception("SystemExit"); |
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694 TypeError = newstdexception("TypeError"); |
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695 ValueError = newstdexception("ValueError"); |
| 495 | 696 ZeroDivisionError = newstdexception("ZeroDivisionError"); |
| 86 | 697 } |
| 698 | |
| 699 void | |
| 700 initbuiltin() | |
| 701 { | |
| 702 object *m; | |
| 703 m = initmodule("builtin", builtin_methods); | |
| 704 builtin_dict = getmoduledict(m); | |
| 705 INCREF(builtin_dict); | |
| 706 initerrors(); | |
| 707 (void) dictinsert(builtin_dict, "None", None); | |
| 708 } | |
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709 |
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710 /* Coerce two numeric types to the "larger" one. |
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711 Increment the reference count on each argument. |
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712 Return -1 and raise an exception if no coercion is possible |
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713 (and then no reference count is incremented). |
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714 */ |
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715 |
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716 int |
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717 coerce(pv, pw) |
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718 object **pv, **pw; |
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719 { |
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720 register object *v = *pv; |
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721 register object *w = *pw; |
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722 int res; |
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723 |
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724 if (v->ob_type == w->ob_type) { |
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725 INCREF(v); |
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726 INCREF(w); |
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727 return 0; |
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728 } |
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729 if (v->ob_type->tp_as_number && v->ob_type->tp_as_number->nb_coerce) { |
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730 res = (*v->ob_type->tp_as_number->nb_coerce)(pv, pw); |
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731 if (res <= 0) |
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732 return res; |
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733 } |
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734 if (w->ob_type->tp_as_number && w->ob_type->tp_as_number->nb_coerce) { |
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735 res = (*w->ob_type->tp_as_number->nb_coerce)(pw, pv); |
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736 if (res <= 0) |
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737 return res; |
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738 } |
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739 err_setstr(TypeError, "number coercion failed"); |
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740 return -1; |
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741 } |