Mercurial > cpython-lru_cache-weakref
annotate Python/bltinmodule.c @ 716:4d64abbdf70a legacy-trunk
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| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Tue, 24 Mar 1992 13:46:39 +0000 |
| parents | f53dcb9a04d6 |
| children | 70c2f40430c7 |
| rev | line source |
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1 /*********************************************************** |
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2 Copyright 1991 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 "compile.h" /* For ceval.h */ | |
| 37 #include "ceval.h" | |
| 38 #include "modsupport.h" | |
| 39 | |
| 40 static object * | |
| 41 builtin_abs(self, v) | |
| 42 object *self; | |
| 43 object *v; | |
| 44 { | |
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45 number_methods *nm; |
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46 if (v == NULL || (nm = v->ob_type->tp_as_number) == NULL) { |
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47 err_setstr(TypeError, "abs() requires numeric argument"); |
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48 return NULL; |
| 86 | 49 } |
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50 return (*nm->nb_absolute)(v); |
| 86 | 51 } |
| 52 | |
| 53 static object * | |
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54 builtin_apply(self, v) |
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55 object *self; |
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56 object *v; |
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57 { |
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58 object *func, *args; |
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59 if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2) { |
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60 err_setstr(TypeError, "apply() requires (func,args)"); |
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61 return NULL; |
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62 } |
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63 func = gettupleitem(v, 0); |
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64 args = gettupleitem(v, 1); |
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65 return call_object(func, args); |
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66 } |
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67 |
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68 static object * |
| 86 | 69 builtin_chr(self, v) |
| 70 object *self; | |
| 71 object *v; | |
| 72 { | |
| 73 long x; | |
| 74 char s[1]; | |
| 75 if (v == NULL || !is_intobject(v)) { | |
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76 err_setstr(TypeError, "chr() requires int argument"); |
| 86 | 77 return NULL; |
| 78 } | |
| 79 x = getintvalue(v); | |
| 80 if (x < 0 || x >= 256) { | |
| 463 | 81 err_setstr(ValueError, "chr() arg not in range(256)"); |
| 86 | 82 return NULL; |
| 83 } | |
| 84 s[0] = x; | |
| 85 return newsizedstringobject(s, 1); | |
| 86 } | |
| 87 | |
| 88 static object * | |
| 89 builtin_dir(self, v) | |
| 90 object *self; | |
| 91 object *v; | |
| 92 { | |
| 93 object *d; | |
| 94 if (v == NULL) { | |
| 95 d = getlocals(); | |
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96 INCREF(d); |
| 86 | 97 } |
| 98 else { | |
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99 d = getattr(v, "__dict__"); |
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100 if (d == NULL) { |
| 86 | 101 err_setstr(TypeError, |
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102 "dir() argument must have __dict__ attribute"); |
| 86 | 103 return NULL; |
| 104 } | |
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105 } |
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106 if (is_dictobject(d)) { |
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107 v = getdictkeys(d); |
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108 if (sortlist(v) != 0) { |
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109 DECREF(v); |
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110 v = NULL; |
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111 } |
| 86 | 112 } |
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113 else { |
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114 v = newlistobject(0); |
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115 } |
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116 DECREF(d); |
| 86 | 117 return v; |
| 118 } | |
| 119 | |
| 120 static object * | |
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121 builtin_divmod(self, args) |
| 86 | 122 object *self; |
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123 object *args; |
| 86 | 124 { |
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125 object *v, *w, *x; |
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126 if (args == NULL || !is_tupleobject(args) || gettuplesize(args) != 2) { |
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127 err_setstr(TypeError, "divmod() requires 2 arguments"); |
| 86 | 128 return NULL; |
| 129 } | |
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130 v = gettupleitem(args, 0); |
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131 w = gettupleitem(args, 1); |
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132 if (v->ob_type->tp_as_number == NULL || |
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133 w->ob_type->tp_as_number == NULL) { |
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134 err_setstr(TypeError, "divmod() requires numeric arguments"); |
| 86 | 135 return NULL; |
| 136 } | |
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137 if (coerce(&v, &w) != 0) |
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138 return NULL; |
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139 x = (*v->ob_type->tp_as_number->nb_divmod)(v, w); |
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140 DECREF(v); |
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141 DECREF(w); |
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142 return x; |
| 86 | 143 } |
| 144 | |
| 145 static object * | |
| 146 exec_eval(v, start) | |
| 147 object *v; | |
| 148 int start; | |
| 149 { | |
| 150 object *str = NULL, *globals = NULL, *locals = NULL; | |
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151 char *s; |
| 86 | 152 int n; |
| 153 if (v != NULL) { | |
| 154 if (is_stringobject(v)) | |
| 155 str = v; | |
| 156 else if (is_tupleobject(v) && | |
| 157 ((n = gettuplesize(v)) == 2 || n == 3)) { | |
| 158 str = gettupleitem(v, 0); | |
| 159 globals = gettupleitem(v, 1); | |
| 160 if (n == 3) | |
| 161 locals = gettupleitem(v, 2); | |
| 162 } | |
| 163 } | |
| 164 if (str == NULL || !is_stringobject(str) || | |
| 165 globals != NULL && !is_dictobject(globals) || | |
| 166 locals != NULL && !is_dictobject(locals)) { | |
| 167 err_setstr(TypeError, | |
| 168 "exec/eval arguments must be string[,dict[,dict]]"); | |
| 169 return NULL; | |
| 170 } | |
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171 s = getstringvalue(str); |
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172 if (start == eval_input) { |
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173 while (*s == ' ' || *s == '\t') |
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174 s++; |
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175 } |
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176 return run_string(s, start, globals, locals); |
| 86 | 177 } |
| 178 | |
| 179 static object * | |
| 180 builtin_eval(self, v) | |
| 181 object *self; | |
| 182 object *v; | |
| 183 { | |
| 184 return exec_eval(v, eval_input); | |
| 185 } | |
| 186 | |
| 187 static object * | |
| 188 builtin_exec(self, v) | |
| 189 object *self; | |
| 190 object *v; | |
| 191 { | |
| 192 return exec_eval(v, file_input); | |
| 193 } | |
| 194 | |
| 195 static object * | |
| 673 | 196 builtin_execfile(self, v) |
| 197 object *self; | |
| 198 object *v; | |
| 199 { | |
| 200 object *str = NULL, *globals = NULL, *locals = NULL, *w; | |
| 201 FILE* fp; | |
| 202 int n; | |
| 203 if (v != NULL) { | |
| 204 if (is_stringobject(v)) | |
| 205 str = v; | |
| 206 else if (is_tupleobject(v) && | |
| 207 ((n = gettuplesize(v)) == 2 || n == 3)) { | |
| 208 str = gettupleitem(v, 0); | |
| 209 globals = gettupleitem(v, 1); | |
| 210 if (n == 3) | |
| 211 locals = gettupleitem(v, 2); | |
| 212 } | |
| 213 } | |
| 214 if (str == NULL || !is_stringobject(str) || | |
| 215 globals != NULL && !is_dictobject(globals) || | |
| 216 locals != NULL && !is_dictobject(locals)) { | |
| 217 err_setstr(TypeError, | |
| 218 "execfile arguments must be filename[,dict[,dict]]"); | |
| 219 return NULL; | |
| 220 } | |
| 221 fp = fopen(getstringvalue(str), "r"); | |
| 222 if (fp == NULL) { | |
| 223 err_setstr(IOError, "execfile cannot open the file argument"); | |
| 224 return NULL; | |
| 225 } | |
| 226 w = run_file(fp, getstringvalue(str), file_input, globals, locals); | |
| 227 fclose(fp); | |
| 228 return w; | |
| 229 } | |
| 230 | |
| 231 static object * | |
| 86 | 232 builtin_float(self, v) |
| 233 object *self; | |
| 234 object *v; | |
| 235 { | |
| 236 if (v == NULL) { | |
| 237 /* */ | |
| 238 } | |
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239 else if (is_intobject(v)) { |
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240 long x = getintvalue(v); |
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241 return newfloatobject((double)x); |
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242 } |
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243 else if (is_longobject(v)) { |
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244 return newfloatobject(dgetlongvalue(v)); |
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245 } |
| 86 | 246 else if (is_floatobject(v)) { |
| 247 INCREF(v); | |
| 248 return v; | |
| 249 } | |
|
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250 err_setstr(TypeError, "float() argument must be int, long or float"); |
| 86 | 251 return NULL; |
| 252 } | |
| 253 | |
| 254 static object * | |
|
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255 builtin_getattr(self, v) |
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256 object *self; |
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257 object *v; |
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258 { |
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259 object *name; |
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260 if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2 || |
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261 (name = gettupleitem(v, 1), !is_stringobject(name))) { |
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262 err_setstr(TypeError, |
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263 "getattr() arguments must be (object, string)"); |
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264 return NULL; |
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265 } |
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266 return getattr(gettupleitem(v, 0), getstringvalue(name)); |
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267 } |
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268 |
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269 static object * |
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270 builtin_setattr(self, v) |
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271 object *self; |
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272 object *v; |
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273 { |
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274 object *name; |
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275 if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 3 || |
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276 (name = gettupleitem(v, 1), !is_stringobject(name))) { |
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277 err_setstr(TypeError, |
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278 "setattr() arguments must be (object, string, object)"); |
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279 return NULL; |
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280 } |
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281 if (setattr(gettupleitem(v, 0), |
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282 getstringvalue(name), gettupleitem(v, 2)) != 0) |
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283 return NULL; |
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284 INCREF(None); |
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285 return None; |
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286 } |
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287 |
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288 static object * |
|
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289 builtin_hex(self, v) |
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290 object *self; |
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291 object *v; |
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292 { |
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293 if (v != NULL) { |
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294 if (is_intobject(v)) { |
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295 char buf[20]; |
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296 long x = getintvalue(v); |
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297 if (x >= 0) |
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298 sprintf(buf, "0x%lx", x); |
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299 else |
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300 sprintf(buf, "-0x%lx", -x); |
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301 return newstringobject(buf); |
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302 } |
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303 if (is_longobject(v)) { |
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304 return long_format(v, 16); |
|
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305 } |
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306 } |
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307 err_setstr(TypeError, "hex() requires int/long argument"); |
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308 return NULL; |
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309 } |
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310 |
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311 static object * |
| 86 | 312 builtin_input(self, v) |
| 313 object *self; | |
| 314 object *v; | |
| 315 { | |
| 316 FILE *in = sysgetfile("stdin", stdin); | |
| 317 FILE *out = sysgetfile("stdout", stdout); | |
| 318 node *n; | |
| 319 int err; | |
|
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320 int c; |
| 86 | 321 object *m, *d; |
| 322 flushline(); | |
|
284
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323 if (v != NULL) { |
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324 if (printobject(v, out, PRINT_RAW) != 0) |
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325 return NULL; |
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326 } |
| 86 | 327 m = add_module("__main__"); |
| 328 d = getmoduledict(m); | |
|
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329 while ((c = getc(in)) != EOF && (c == ' ' || c == '\t')) |
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330 ; |
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331 ungetc(c, in); |
| 86 | 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 { | |
| 340 if (v == NULL) { | |
| 341 /* */ | |
| 342 } | |
| 343 else if (is_intobject(v)) { | |
| 344 INCREF(v); | |
| 345 return v; | |
| 346 } | |
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347 else if (is_longobject(v)) { |
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348 long x; |
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349 x = getlongvalue(v); |
|
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350 if (err_occurred()) |
|
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351 return NULL; |
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352 return newintobject(x); |
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353 } |
| 86 | 354 else if (is_floatobject(v)) { |
| 355 double x = getfloatvalue(v); | |
|
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356 /* XXX should check for overflow */ |
| 86 | 357 return newintobject((long)x); |
| 358 } | |
|
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359 err_setstr(TypeError, "int() argument must be int, long or float"); |
| 86 | 360 return NULL; |
| 361 } | |
| 362 | |
| 363 static object * | |
| 364 builtin_len(self, v) | |
| 365 object *self; | |
| 366 object *v; | |
| 367 { | |
| 368 long len; | |
| 369 typeobject *tp; | |
| 370 if (v == NULL) { | |
| 371 err_setstr(TypeError, "len() without argument"); | |
| 372 return NULL; | |
| 373 } | |
| 374 tp = v->ob_type; | |
| 375 if (tp->tp_as_sequence != NULL) { | |
| 376 len = (*tp->tp_as_sequence->sq_length)(v); | |
| 377 } | |
| 378 else if (tp->tp_as_mapping != NULL) { | |
| 379 len = (*tp->tp_as_mapping->mp_length)(v); | |
| 380 } | |
| 381 else { | |
| 382 err_setstr(TypeError, "len() of unsized object"); | |
| 383 return NULL; | |
| 384 } | |
| 385 return newintobject(len); | |
| 386 } | |
| 387 | |
| 388 static object * | |
|
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389 builtin_long(self, v) |
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390 object *self; |
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391 object *v; |
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392 { |
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393 if (v == NULL) { |
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394 /* */ |
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395 } |
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396 else if (is_intobject(v)) { |
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397 return newlongobject(getintvalue(v)); |
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398 } |
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399 else if (is_longobject(v)) { |
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400 INCREF(v); |
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401 return v; |
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402 } |
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403 else if (is_floatobject(v)) { |
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404 double x = getfloatvalue(v); |
|
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405 return dnewlongobject(x); |
|
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406 } |
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407 err_setstr(TypeError, "long() argument must be int, long or float"); |
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408 return NULL; |
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409 } |
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410 |
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411 static object * |
| 86 | 412 min_max(v, sign) |
| 413 object *v; | |
| 414 int sign; | |
| 415 { | |
| 416 int i, n, cmp; | |
| 417 object *w, *x; | |
| 418 sequence_methods *sq; | |
| 419 if (v == NULL) { | |
| 420 err_setstr(TypeError, "min() or max() without argument"); | |
| 421 return NULL; | |
| 422 } | |
| 423 sq = v->ob_type->tp_as_sequence; | |
| 424 if (sq == NULL) { | |
| 425 err_setstr(TypeError, "min() or max() of non-sequence"); | |
| 426 return NULL; | |
| 427 } | |
| 428 n = (*sq->sq_length)(v); | |
| 429 if (n == 0) { | |
| 463 | 430 err_setstr(ValueError, "min() or max() of empty sequence"); |
| 86 | 431 return NULL; |
| 432 } | |
| 433 w = (*sq->sq_item)(v, 0); /* Implies INCREF */ | |
| 434 for (i = 1; i < n; i++) { | |
| 435 x = (*sq->sq_item)(v, i); /* Implies INCREF */ | |
| 436 cmp = cmpobject(x, w); | |
| 437 if (cmp * sign > 0) { | |
| 438 DECREF(w); | |
| 439 w = x; | |
| 440 } | |
| 441 else | |
| 442 DECREF(x); | |
| 443 } | |
| 444 return w; | |
| 445 } | |
| 446 | |
| 447 static object * | |
| 448 builtin_min(self, v) | |
| 449 object *self; | |
| 450 object *v; | |
| 451 { | |
| 452 return min_max(v, -1); | |
| 453 } | |
| 454 | |
| 455 static object * | |
| 456 builtin_max(self, v) | |
| 457 object *self; | |
| 458 object *v; | |
| 459 { | |
| 460 return min_max(v, 1); | |
| 461 } | |
| 462 | |
| 463 static object * | |
|
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464 builtin_oct(self, v) |
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465 object *self; |
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466 object *v; |
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467 { |
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468 if (v != NULL) { |
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469 if (is_intobject(v)) { |
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470 char buf[20]; |
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471 long x = getintvalue(v); |
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472 if (x >= 0) |
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473 sprintf(buf, "0%lo", x); |
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474 else |
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475 sprintf(buf, "-0%lo", -x); |
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476 return newstringobject(buf); |
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477 } |
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478 if (is_longobject(v)) { |
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479 return long_format(v, 8); |
|
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480 } |
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481 } |
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482 err_setstr(TypeError, "oct() requires int/long argument"); |
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483 return NULL; |
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484 } |
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485 |
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486 static object * |
| 86 | 487 builtin_open(self, v) |
| 488 object *self; | |
| 489 object *v; | |
| 490 { | |
| 491 object *name, *mode; | |
| 492 if (v == NULL || !is_tupleobject(v) || gettuplesize(v) != 2 || | |
| 493 !is_stringobject(name = gettupleitem(v, 0)) || | |
| 494 !is_stringobject(mode = gettupleitem(v, 1))) { | |
| 495 err_setstr(TypeError, "open() requires 2 string arguments"); | |
| 496 return NULL; | |
| 497 } | |
| 498 v = newfileobject(getstringvalue(name), getstringvalue(mode)); | |
| 499 return v; | |
| 500 } | |
| 501 | |
| 502 static object * | |
| 503 builtin_ord(self, v) | |
| 504 object *self; | |
| 505 object *v; | |
| 506 { | |
| 507 if (v == NULL || !is_stringobject(v)) { | |
| 508 err_setstr(TypeError, "ord() must have string argument"); | |
| 509 return NULL; | |
| 510 } | |
| 511 if (getstringsize(v) != 1) { | |
| 463 | 512 err_setstr(ValueError, "ord() arg must have length 1"); |
| 86 | 513 return NULL; |
| 514 } | |
| 515 return newintobject((long)(getstringvalue(v)[0] & 0xff)); | |
| 516 } | |
| 517 | |
| 518 static object * | |
|
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519 builtin_pow(self, args) |
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520 object *self; |
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521 object *args; |
|
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522 { |
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523 object *v, *w, *x; |
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524 if (args == NULL || !is_tupleobject(args) || gettuplesize(args) != 2) { |
|
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525 err_setstr(TypeError, "pow() requires 2 arguments"); |
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526 return NULL; |
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527 } |
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528 v = gettupleitem(args, 0); |
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529 w = gettupleitem(args, 1); |
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530 if (v->ob_type->tp_as_number == NULL || |
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531 w->ob_type->tp_as_number == NULL) { |
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532 err_setstr(TypeError, "pow() requires numeric arguments"); |
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533 return NULL; |
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534 } |
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535 if (coerce(&v, &w) != 0) |
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536 return NULL; |
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537 x = (*v->ob_type->tp_as_number->nb_power)(v, w); |
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538 DECREF(v); |
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539 DECREF(w); |
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540 return x; |
|
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541 } |
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542 |
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543 static object * |
| 86 | 544 builtin_range(self, v) |
| 545 object *self; | |
| 546 object *v; | |
| 547 { | |
| 548 static char *errmsg = "range() requires 1-3 int arguments"; | |
| 549 int i, n; | |
| 550 long ilow, ihigh, istep; | |
| 551 if (v != NULL && is_intobject(v)) { | |
| 552 ilow = 0; ihigh = getintvalue(v); istep = 1; | |
| 553 } | |
| 554 else if (v == NULL || !is_tupleobject(v)) { | |
| 555 err_setstr(TypeError, errmsg); | |
| 556 return NULL; | |
| 557 } | |
| 558 else { | |
| 559 n = gettuplesize(v); | |
| 560 if (n < 1 || n > 3) { | |
| 561 err_setstr(TypeError, errmsg); | |
| 562 return NULL; | |
| 563 } | |
| 564 for (i = 0; i < n; i++) { | |
| 565 if (!is_intobject(gettupleitem(v, i))) { | |
| 566 err_setstr(TypeError, errmsg); | |
| 567 return NULL; | |
| 568 } | |
| 569 } | |
| 570 if (n == 3) { | |
| 571 istep = getintvalue(gettupleitem(v, 2)); | |
| 572 --n; | |
| 573 } | |
| 574 else | |
| 575 istep = 1; | |
| 576 ihigh = getintvalue(gettupleitem(v, --n)); | |
| 577 if (n > 0) | |
| 578 ilow = getintvalue(gettupleitem(v, 0)); | |
| 579 else | |
| 580 ilow = 0; | |
| 581 } | |
| 582 if (istep == 0) { | |
| 463 | 583 err_setstr(ValueError, "zero step for range()"); |
| 86 | 584 return NULL; |
| 585 } | |
| 586 /* XXX ought to check overflow of subtraction */ | |
| 587 if (istep > 0) | |
| 588 n = (ihigh - ilow + istep - 1) / istep; | |
| 589 else | |
| 590 n = (ihigh - ilow + istep + 1) / istep; | |
| 591 if (n < 0) | |
| 592 n = 0; | |
| 593 v = newlistobject(n); | |
| 594 if (v == NULL) | |
| 595 return NULL; | |
| 596 for (i = 0; i < n; i++) { | |
| 597 object *w = newintobject(ilow); | |
| 598 if (w == NULL) { | |
| 599 DECREF(v); | |
| 600 return NULL; | |
| 601 } | |
| 602 setlistitem(v, i, w); | |
| 603 ilow += istep; | |
| 604 } | |
| 605 return v; | |
| 606 } | |
| 607 | |
| 608 static object * | |
| 609 builtin_raw_input(self, v) | |
| 610 object *self; | |
| 611 object *v; | |
| 612 { | |
| 613 FILE *out = sysgetfile("stdout", stdout); | |
| 614 flushline(); | |
|
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615 if (v != NULL) { |
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616 if (printobject(v, out, PRINT_RAW) != 0) |
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617 return NULL; |
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618 } |
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619 return filegetline(sysget("stdin"), -1); |
| 86 | 620 } |
| 621 | |
| 622 static object * | |
| 623 builtin_reload(self, v) | |
| 624 object *self; | |
| 625 object *v; | |
| 626 { | |
| 627 return reload_module(v); | |
| 628 } | |
| 629 | |
| 630 static object * | |
| 631 builtin_type(self, v) | |
| 632 object *self; | |
| 633 object *v; | |
| 634 { | |
| 635 if (v == NULL) { | |
| 636 err_setstr(TypeError, "type() requres an argument"); | |
| 637 return NULL; | |
| 638 } | |
| 639 v = (object *)v->ob_type; | |
| 640 INCREF(v); | |
| 641 return v; | |
| 642 } | |
| 643 | |
| 644 static struct methodlist builtin_methods[] = { | |
|
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645 {"abs", builtin_abs}, |
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646 {"apply", builtin_apply}, |
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647 {"chr", builtin_chr}, |
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648 {"dir", builtin_dir}, |
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649 {"divmod", builtin_divmod}, |
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650 {"eval", builtin_eval}, |
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651 {"exec", builtin_exec}, |
| 673 | 652 {"execfile", builtin_execfile}, |
|
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653 {"float", builtin_float}, |
|
644
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654 {"getattr", builtin_getattr}, |
|
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655 {"hex", builtin_hex}, |
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656 {"input", builtin_input}, |
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657 {"int", builtin_int}, |
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658 {"len", builtin_len}, |
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659 {"long", builtin_long}, |
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660 {"max", builtin_max}, |
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661 {"min", builtin_min}, |
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662 {"oct", builtin_oct}, |
|
662
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663 {"open", builtin_open}, |
|
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664 {"ord", builtin_ord}, |
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665 {"pow", builtin_pow}, |
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666 {"range", builtin_range}, |
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667 {"raw_input", builtin_raw_input}, |
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668 {"reload", builtin_reload}, |
|
644
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669 {"setattr", builtin_setattr}, |
|
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670 {"type", builtin_type}, |
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671 {NULL, NULL}, |
| 86 | 672 }; |
| 673 | |
| 674 static object *builtin_dict; | |
| 675 | |
| 676 object * | |
| 677 getbuiltin(name) | |
|
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678 object *name; |
| 86 | 679 { |
|
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680 return dict2lookup(builtin_dict, name); |
| 86 | 681 } |
| 682 | |
| 683 /* Predefined exceptions */ | |
| 684 | |
| 495 | 685 object *AttributeError; |
| 86 | 686 object *EOFError; |
| 495 | 687 object *IOError; |
|
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688 object *ImportError; |
| 495 | 689 object *IndexError; |
| 690 object *KeyError; | |
| 691 object *KeyboardInterrupt; | |
| 86 | 692 object *MemoryError; |
| 693 object *NameError; | |
| 495 | 694 object *OverflowError; |
| 695 object *RuntimeError; | |
| 696 object *SyntaxError; | |
| 86 | 697 object *SystemError; |
| 545 | 698 object *SystemExit; |
| 495 | 699 object *TypeError; |
| 700 object *ValueError; | |
| 463 | 701 object *ZeroDivisionError; |
| 702 | |
| 86 | 703 static object * |
| 495 | 704 newstdexception(name) |
| 705 char *name; | |
| 86 | 706 { |
| 495 | 707 object *v = newstringobject(name); |
| 86 | 708 if (v == NULL || dictinsert(builtin_dict, name, v) != 0) |
| 709 fatal("no mem for new standard exception"); | |
| 710 return v; | |
| 711 } | |
| 712 | |
| 713 static void | |
| 714 initerrors() | |
| 715 { | |
|
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716 AttributeError = newstdexception("AttributeError"); |
| 495 | 717 EOFError = newstdexception("EOFError"); |
|
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718 IOError = newstdexception("IOError"); |
|
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719 ImportError = newstdexception("ImportError"); |
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720 IndexError = newstdexception("IndexError"); |
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721 KeyError = newstdexception("KeyError"); |
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722 KeyboardInterrupt = newstdexception("KeyboardInterrupt"); |
| 495 | 723 MemoryError = newstdexception("MemoryError"); |
| 724 NameError = newstdexception("NameError"); | |
|
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725 OverflowError = newstdexception("OverflowError"); |
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726 RuntimeError = newstdexception("RuntimeError"); |
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727 SyntaxError = newstdexception("SyntaxError"); |
| 495 | 728 SystemError = newstdexception("SystemError"); |
| 545 | 729 SystemExit = newstdexception("SystemExit"); |
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730 TypeError = newstdexception("TypeError"); |
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731 ValueError = newstdexception("ValueError"); |
| 495 | 732 ZeroDivisionError = newstdexception("ZeroDivisionError"); |
| 86 | 733 } |
| 734 | |
| 735 void | |
| 736 initbuiltin() | |
| 737 { | |
| 738 object *m; | |
| 739 m = initmodule("builtin", builtin_methods); | |
| 740 builtin_dict = getmoduledict(m); | |
| 741 INCREF(builtin_dict); | |
| 742 initerrors(); | |
| 743 (void) dictinsert(builtin_dict, "None", None); | |
| 744 } | |
|
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745 |
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746 /* Coerce two numeric types to the "larger" one. |
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747 Increment the reference count on each argument. |
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748 Return -1 and raise an exception if no coercion is possible |
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749 (and then no reference count is incremented). |
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750 XXX This should be distributed over the various numeric types, |
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751 XXX but for now I don't see how to implement that. |
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752 XXX So, for now, if you add a new numeric type, |
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753 XXX you must add to this function as well. */ |
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754 |
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755 int |
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756 coerce(pv, pw) |
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757 object **pv, **pw; |
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758 { |
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759 register object *v = *pv; |
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760 register object *w = *pw; |
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761 if (v->ob_type == w->ob_type) { |
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762 INCREF(v); |
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763 INCREF(w); |
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764 return 0; |
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765 } |
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766 if (v->ob_type->tp_as_number == NULL || |
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767 w->ob_type->tp_as_number == NULL) { |
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768 err_setstr(TypeError, "mixing number and non-number"); |
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769 return -1; |
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770 } |
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771 if (is_floatobject(v) || is_floatobject(w)) { |
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772 v = builtin_float((object *)0, v); |
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773 w = builtin_float((object *)0, w); |
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774 } |
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775 else if (is_longobject(v) || is_longobject(w)) { |
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776 v = builtin_long((object *)0, v); |
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777 w = builtin_long((object *)0, w); |
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778 } |
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779 else { |
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780 err_setstr(TypeError, "can't coerce numeric types?!?!?"); |
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781 return -1; |
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782 } |
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783 if (v == NULL || w == NULL) { |
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784 XDECREF(v); |
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785 XDECREF(w); |
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786 return -1; |
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787 } |
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788 *pv = v; |
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789 *pw = w; |
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790 return 0; |
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791 } |