Mercurial > cpython-lru_cache-weakref
annotate Python/bltinmodule.c @ 1257:1cabc2b6c970 legacy-trunk
* Changed all copyright messages to include 1993.
* Stubs for faster implementation of local variables (not yet finished)
* Added function name to code object. Print it for code and function
objects. THIS MAKES THE .PYC FILE FORMAT INCOMPATIBLE (the version
number has changed accordingly)
* Print address of self for built-in methods
* New internal functions getattro and setattro (getattr/setattr with
string object arg)
* Replaced "dictobject" with more powerful "mappingobject"
* New per-type functio tp_hash to implement arbitrary object hashing,
and hashobject() to interface to it
* Added built-in functions hash(v) and hasattr(v, 'name')
* classobject: made some functions static that accidentally weren't;
added __hash__ special instance method to implement hash()
* Added proper comparison for built-in methods and functions
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Mon, 29 Mar 1993 10:43:31 +0000 |
| parents | c4cd0d9d8281 |
| children | 65a1e4e9cd54 |
| rev | line source |
|---|---|
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1 /*********************************************************** |
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2 Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum, |
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3 Amsterdam, The 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_cmp(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 *a, *b; |
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86 if (!getargs(args, "(OO)", &a, &b)) |
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87 return NULL; |
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88 return newintobject((long)cmpobject(a, b)); |
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89 } |
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90 |
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91 static object * |
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92 builtin_coerce(self, args) |
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93 object *self; |
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94 object *args; |
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95 { |
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96 object *v, *w; |
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97 object *res; |
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98 |
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99 if (!getargs(args, "(OO)", &v, &w)) |
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100 return NULL; |
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101 if (coerce(&v, &w) < 0) |
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102 return NULL; |
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103 res = mkvalue("(OO)", v, w); |
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104 DECREF(v); |
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105 DECREF(w); |
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106 return res; |
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107 } |
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108 |
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109 static object * |
| 86 | 110 builtin_dir(self, v) |
| 111 object *self; | |
| 112 object *v; | |
| 113 { | |
| 114 object *d; | |
| 115 if (v == NULL) { | |
| 116 d = getlocals(); | |
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117 INCREF(d); |
| 86 | 118 } |
| 119 else { | |
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120 d = getattr(v, "__dict__"); |
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121 if (d == NULL) { |
| 86 | 122 err_setstr(TypeError, |
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123 "dir() argument must have __dict__ attribute"); |
| 86 | 124 return NULL; |
| 125 } | |
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126 } |
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127 if (is_dictobject(d)) { |
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128 v = getdictkeys(d); |
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129 if (sortlist(v) != 0) { |
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130 DECREF(v); |
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131 v = NULL; |
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132 } |
| 86 | 133 } |
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134 else { |
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135 v = newlistobject(0); |
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136 } |
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137 DECREF(d); |
| 86 | 138 return v; |
| 139 } | |
| 140 | |
| 141 static object * | |
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142 builtin_divmod(self, args) |
| 86 | 143 object *self; |
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144 object *args; |
| 86 | 145 { |
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146 object *v, *w, *x; |
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147 if (!getargs(args, "(OO)", &v, &w)) |
| 86 | 148 return NULL; |
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149 if (v->ob_type->tp_as_number == NULL || |
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150 w->ob_type->tp_as_number == NULL) { |
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151 err_setstr(TypeError, "divmod() requires numeric arguments"); |
| 86 | 152 return NULL; |
| 153 } | |
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154 if (coerce(&v, &w) != 0) |
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155 return NULL; |
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156 x = (*v->ob_type->tp_as_number->nb_divmod)(v, w); |
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157 DECREF(v); |
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158 DECREF(w); |
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159 return x; |
| 86 | 160 } |
| 161 | |
| 162 static object * | |
| 163 exec_eval(v, start) | |
| 164 object *v; | |
| 165 int start; | |
| 166 { | |
| 167 object *str = NULL, *globals = NULL, *locals = NULL; | |
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168 char *s; |
| 86 | 169 int n; |
| 170 if (v != NULL) { | |
| 171 if (is_stringobject(v)) | |
| 172 str = v; | |
| 173 else if (is_tupleobject(v) && | |
| 174 ((n = gettuplesize(v)) == 2 || n == 3)) { | |
| 175 str = gettupleitem(v, 0); | |
| 176 globals = gettupleitem(v, 1); | |
| 177 if (n == 3) | |
| 178 locals = gettupleitem(v, 2); | |
| 179 } | |
| 180 } | |
| 181 if (str == NULL || !is_stringobject(str) || | |
| 182 globals != NULL && !is_dictobject(globals) || | |
| 183 locals != NULL && !is_dictobject(locals)) { | |
| 184 err_setstr(TypeError, | |
| 185 "exec/eval arguments must be string[,dict[,dict]]"); | |
| 186 return NULL; | |
| 187 } | |
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188 s = getstringvalue(str); |
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189 if (strlen(s) != getstringsize(str)) { |
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190 err_setstr(ValueError, "embedded '\\0' in string arg"); |
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191 return NULL; |
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192 } |
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193 if (start == eval_input) { |
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194 while (*s == ' ' || *s == '\t') |
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195 s++; |
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196 } |
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197 return run_string(s, start, globals, locals); |
| 86 | 198 } |
| 199 | |
| 200 static object * | |
| 201 builtin_eval(self, v) | |
| 202 object *self; | |
| 203 object *v; | |
| 204 { | |
| 205 return exec_eval(v, eval_input); | |
| 206 } | |
| 207 | |
| 208 static object * | |
| 209 builtin_exec(self, v) | |
| 210 object *self; | |
| 211 object *v; | |
| 212 { | |
| 213 return exec_eval(v, file_input); | |
| 214 } | |
| 215 | |
| 216 static object * | |
| 673 | 217 builtin_execfile(self, v) |
| 218 object *self; | |
| 219 object *v; | |
| 220 { | |
| 221 object *str = NULL, *globals = NULL, *locals = NULL, *w; | |
| 222 FILE* fp; | |
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223 char *s; |
| 673 | 224 int n; |
| 225 if (v != NULL) { | |
| 226 if (is_stringobject(v)) | |
| 227 str = v; | |
| 228 else if (is_tupleobject(v) && | |
| 229 ((n = gettuplesize(v)) == 2 || n == 3)) { | |
| 230 str = gettupleitem(v, 0); | |
| 231 globals = gettupleitem(v, 1); | |
| 232 if (n == 3) | |
| 233 locals = gettupleitem(v, 2); | |
| 234 } | |
| 235 } | |
| 236 if (str == NULL || !is_stringobject(str) || | |
| 237 globals != NULL && !is_dictobject(globals) || | |
| 238 locals != NULL && !is_dictobject(locals)) { | |
| 239 err_setstr(TypeError, | |
| 240 "execfile arguments must be filename[,dict[,dict]]"); | |
| 241 return NULL; | |
| 242 } | |
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243 s = getstringvalue(str); |
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244 if (strlen(s) != getstringsize(str)) { |
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245 err_setstr(ValueError, "embedded '\\0' in string arg"); |
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246 return NULL; |
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247 } |
| 926 | 248 BGN_SAVE |
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249 fp = fopen(s, "r"); |
| 926 | 250 END_SAVE |
| 673 | 251 if (fp == NULL) { |
| 252 err_setstr(IOError, "execfile cannot open the file argument"); | |
| 253 return NULL; | |
| 254 } | |
| 255 w = run_file(fp, getstringvalue(str), file_input, globals, locals); | |
| 926 | 256 BGN_SAVE |
| 673 | 257 fclose(fp); |
| 926 | 258 END_SAVE |
| 673 | 259 return w; |
| 260 } | |
| 261 | |
| 262 static object * | |
| 86 | 263 builtin_float(self, v) |
| 264 object *self; | |
| 265 object *v; | |
| 266 { | |
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267 number_methods *nb; |
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268 |
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269 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
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270 nb->nb_float == NULL) { |
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271 err_setstr(TypeError, |
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272 "float() argument can't be converted to float"); |
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273 return NULL; |
|
223
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274 } |
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275 return (*nb->nb_float)(v); |
| 86 | 276 } |
| 277 | |
| 278 static object * | |
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279 builtin_getattr(self, args) |
|
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280 object *self; |
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281 object *args; |
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282 { |
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283 object *v; |
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284 object *name; |
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285 if (!getargs(args, "(OS)", &v, &name)) |
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286 return NULL; |
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287 return getattro(v, name); |
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288 } |
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289 |
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290 static object * |
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291 builtin_hasattr(self, args) |
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292 object *self; |
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293 object *args; |
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294 { |
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295 object *v; |
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296 object *name; |
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297 if (!getargs(args, "(OS)", &v, &name)) |
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298 return NULL; |
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299 v = getattro(v, name); |
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300 if (v == NULL) { |
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301 err_clear(); |
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302 return newintobject(0L); |
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303 } |
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304 DECREF(v); |
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305 return newintobject(1L); |
|
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306 } |
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307 |
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308 static object * |
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309 builtin_setattr(self, args) |
|
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310 object *self; |
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311 object *args; |
|
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312 { |
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313 object *v; |
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314 object *name; |
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315 object *value; |
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316 if (!getargs(args, "(OSO)", &v, &name, &value)) |
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317 return NULL; |
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318 if (setattro(v, name, value) != 0) |
|
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319 return NULL; |
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320 INCREF(None); |
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321 return None; |
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322 } |
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323 |
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324 static object * |
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325 builtin_hash(self, args) |
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326 object *self; |
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327 object *args; |
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328 { |
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329 object *v; |
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330 long x; |
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331 if (!getargs(args, "O", &v)) |
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332 return NULL; |
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333 x = hashobject(v); |
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334 if (x == -1) |
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335 return NULL; |
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336 return newintobject(x); |
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337 } |
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338 |
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339 static object * |
|
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340 builtin_hex(self, v) |
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341 object *self; |
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342 object *v; |
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343 { |
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344 number_methods *nb; |
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345 |
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346 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
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347 nb->nb_hex == NULL) { |
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348 err_setstr(TypeError, |
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349 "hex() argument can't be converted to hex"); |
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350 return NULL; |
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351 } |
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352 return (*nb->nb_hex)(v); |
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353 } |
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354 |
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355 static object *builtin_raw_input PROTO((object *, object *)); |
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356 |
|
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357 static object * |
| 86 | 358 builtin_input(self, v) |
| 359 object *self; | |
| 360 object *v; | |
| 361 { | |
|
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362 object *line = builtin_raw_input(self, v); |
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363 if (line == NULL) |
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364 return line; |
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365 v = exec_eval(line, eval_input); |
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366 DECREF(line); |
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367 return v; |
| 86 | 368 } |
| 369 | |
| 370 static object * | |
| 371 builtin_int(self, v) | |
| 372 object *self; | |
| 373 object *v; | |
| 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_int == NULL) { |
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379 err_setstr(TypeError, |
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380 "int() argument can't be converted to int"); |
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381 return NULL; |
| 86 | 382 } |
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383 return (*nb->nb_int)(v); |
| 86 | 384 } |
| 385 | |
| 386 static object * | |
| 387 builtin_len(self, v) | |
| 388 object *self; | |
| 389 object *v; | |
| 390 { | |
| 391 long len; | |
| 392 typeobject *tp; | |
| 393 if (v == NULL) { | |
| 394 err_setstr(TypeError, "len() without argument"); | |
| 395 return NULL; | |
| 396 } | |
| 397 tp = v->ob_type; | |
| 398 if (tp->tp_as_sequence != NULL) { | |
| 399 len = (*tp->tp_as_sequence->sq_length)(v); | |
| 400 } | |
| 401 else if (tp->tp_as_mapping != NULL) { | |
| 402 len = (*tp->tp_as_mapping->mp_length)(v); | |
| 403 } | |
| 404 else { | |
| 405 err_setstr(TypeError, "len() of unsized object"); | |
| 406 return NULL; | |
| 407 } | |
|
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408 if (len < 0) |
|
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409 return NULL; |
|
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410 else |
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411 return newintobject(len); |
| 86 | 412 } |
| 413 | |
| 414 static object * | |
|
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415 builtin_long(self, v) |
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416 object *self; |
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417 object *v; |
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418 { |
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419 number_methods *nb; |
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420 |
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421 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
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422 nb->nb_long == NULL) { |
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423 err_setstr(TypeError, |
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424 "long() argument can't be converted to long"); |
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425 return NULL; |
|
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426 } |
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427 return (*nb->nb_long)(v); |
|
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428 } |
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429 |
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430 static object * |
| 86 | 431 min_max(v, sign) |
| 432 object *v; | |
| 433 int sign; | |
| 434 { | |
| 435 int i, n, cmp; | |
| 436 object *w, *x; | |
| 437 sequence_methods *sq; | |
| 438 if (v == NULL) { | |
| 439 err_setstr(TypeError, "min() or max() without argument"); | |
| 440 return NULL; | |
| 441 } | |
| 442 sq = v->ob_type->tp_as_sequence; | |
| 443 if (sq == NULL) { | |
| 444 err_setstr(TypeError, "min() or max() of non-sequence"); | |
| 445 return NULL; | |
| 446 } | |
| 447 n = (*sq->sq_length)(v); | |
|
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448 if (n < 0) |
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449 return NULL; |
| 86 | 450 if (n == 0) { |
| 463 | 451 err_setstr(ValueError, "min() or max() of empty sequence"); |
| 86 | 452 return NULL; |
| 453 } | |
| 454 w = (*sq->sq_item)(v, 0); /* Implies INCREF */ | |
| 455 for (i = 1; i < n; i++) { | |
| 456 x = (*sq->sq_item)(v, i); /* Implies INCREF */ | |
| 457 cmp = cmpobject(x, w); | |
| 458 if (cmp * sign > 0) { | |
| 459 DECREF(w); | |
| 460 w = x; | |
| 461 } | |
| 462 else | |
| 463 DECREF(x); | |
| 464 } | |
| 465 return w; | |
| 466 } | |
| 467 | |
| 468 static object * | |
| 469 builtin_min(self, v) | |
| 470 object *self; | |
| 471 object *v; | |
| 472 { | |
| 473 return min_max(v, -1); | |
| 474 } | |
| 475 | |
| 476 static object * | |
| 477 builtin_max(self, v) | |
| 478 object *self; | |
| 479 object *v; | |
| 480 { | |
| 481 return min_max(v, 1); | |
| 482 } | |
| 483 | |
| 484 static object * | |
|
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485 builtin_oct(self, v) |
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486 object *self; |
|
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487 object *v; |
|
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488 { |
|
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489 number_methods *nb; |
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490 |
|
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491 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
|
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492 nb->nb_oct == NULL) { |
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493 err_setstr(TypeError, |
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494 "oct() argument can't be converted to oct"); |
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495 return NULL; |
|
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496 } |
|
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497 return (*nb->nb_oct)(v); |
|
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498 } |
|
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499 |
|
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500 static object * |
|
959
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|
501 builtin_open(self, args) |
| 86 | 502 object *self; |
|
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503 object *args; |
| 86 | 504 { |
|
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505 char *name, *mode; |
|
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506 if (!getargs(args, "(ss)", &name, &mode)) |
| 86 | 507 return NULL; |
|
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|
508 return newfileobject(name, mode); |
| 86 | 509 } |
| 510 | |
| 511 static object * | |
|
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|
512 builtin_ord(self, args) |
| 86 | 513 object *self; |
|
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|
514 object *args; |
| 86 | 515 { |
|
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|
516 char *s; |
|
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|
517 int len; |
|
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518 if (!getargs(args, "s#", &s, &len)) |
| 86 | 519 return NULL; |
|
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|
520 if (len != 1) { |
| 463 | 521 err_setstr(ValueError, "ord() arg must have length 1"); |
| 86 | 522 return NULL; |
| 523 } | |
|
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524 return newintobject((long)(s[0] & 0xff)); |
| 86 | 525 } |
| 526 | |
| 527 static object * | |
|
301
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|
528 builtin_pow(self, args) |
|
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529 object *self; |
|
301
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530 object *args; |
|
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531 { |
|
301
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532 object *v, *w, *x; |
|
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533 if (!getargs(args, "(OO)", &v, &w)) |
|
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534 return NULL; |
|
301
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535 if (v->ob_type->tp_as_number == NULL || |
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536 w->ob_type->tp_as_number == NULL) { |
|
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537 err_setstr(TypeError, "pow() requires numeric arguments"); |
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538 return NULL; |
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539 } |
|
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540 if (coerce(&v, &w) != 0) |
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541 return NULL; |
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542 x = (*v->ob_type->tp_as_number->nb_power)(v, w); |
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543 DECREF(v); |
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544 DECREF(w); |
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545 return x; |
|
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546 } |
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547 |
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548 static object * |
| 86 | 549 builtin_range(self, v) |
| 550 object *self; | |
| 551 object *v; | |
| 552 { | |
| 553 static char *errmsg = "range() requires 1-3 int arguments"; | |
| 554 int i, n; | |
| 555 long ilow, ihigh, istep; | |
| 556 if (v != NULL && is_intobject(v)) { | |
| 557 ilow = 0; ihigh = getintvalue(v); istep = 1; | |
| 558 } | |
| 559 else if (v == NULL || !is_tupleobject(v)) { | |
| 560 err_setstr(TypeError, errmsg); | |
| 561 return NULL; | |
| 562 } | |
| 563 else { | |
| 564 n = gettuplesize(v); | |
| 565 if (n < 1 || n > 3) { | |
| 566 err_setstr(TypeError, errmsg); | |
| 567 return NULL; | |
| 568 } | |
| 569 for (i = 0; i < n; i++) { | |
| 570 if (!is_intobject(gettupleitem(v, i))) { | |
| 571 err_setstr(TypeError, errmsg); | |
| 572 return NULL; | |
| 573 } | |
| 574 } | |
| 575 if (n == 3) { | |
| 576 istep = getintvalue(gettupleitem(v, 2)); | |
| 577 --n; | |
| 578 } | |
| 579 else | |
| 580 istep = 1; | |
| 581 ihigh = getintvalue(gettupleitem(v, --n)); | |
| 582 if (n > 0) | |
| 583 ilow = getintvalue(gettupleitem(v, 0)); | |
| 584 else | |
| 585 ilow = 0; | |
| 586 } | |
| 587 if (istep == 0) { | |
| 463 | 588 err_setstr(ValueError, "zero step for range()"); |
| 86 | 589 return NULL; |
| 590 } | |
| 591 /* XXX ought to check overflow of subtraction */ | |
| 592 if (istep > 0) | |
| 593 n = (ihigh - ilow + istep - 1) / istep; | |
| 594 else | |
| 595 n = (ihigh - ilow + istep + 1) / istep; | |
| 596 if (n < 0) | |
| 597 n = 0; | |
| 598 v = newlistobject(n); | |
| 599 if (v == NULL) | |
| 600 return NULL; | |
| 601 for (i = 0; i < n; i++) { | |
| 602 object *w = newintobject(ilow); | |
| 603 if (w == NULL) { | |
| 604 DECREF(v); | |
| 605 return NULL; | |
| 606 } | |
| 607 setlistitem(v, i, w); | |
| 608 ilow += istep; | |
| 609 } | |
| 610 return v; | |
| 611 } | |
| 612 | |
| 613 static object * | |
| 614 builtin_raw_input(self, v) | |
| 615 object *self; | |
| 616 object *v; | |
| 617 { | |
|
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Modified most (but not yet all) I/O to always go through sys.stdout or
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|
618 object *f = sysget("stdout"); |
|
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Modified most (but not yet all) I/O to always go through sys.stdout or
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|
619 if (f == NULL) { |
|
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Modified most (but not yet all) I/O to always go through sys.stdout or
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|
620 err_setstr(RuntimeError, "lost sys.stdout"); |
|
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Modified most (but not yet all) I/O to always go through sys.stdout or
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|
621 return NULL; |
|
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Modified most (but not yet all) I/O to always go through sys.stdout or
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|
622 } |
| 86 | 623 flushline(); |
|
284
6ac402023cac
printobject now returns an error code
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|
624 if (v != NULL) { |
|
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Modified most (but not yet all) I/O to always go through sys.stdout or
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|
625 if (writeobject(v, f, PRINT_RAW) != 0) |
|
284
6ac402023cac
printobject now returns an error code
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|
626 return NULL; |
|
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printobject now returns an error code
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|
627 } |
|
182
59ffb6d4b34c
Use fileobject's filegetline() to implement unlimited raw_input().
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|
628 return filegetline(sysget("stdin"), -1); |
| 86 | 629 } |
| 630 | |
| 631 static object * | |
| 632 builtin_reload(self, v) | |
| 633 object *self; | |
| 634 object *v; | |
| 635 { | |
| 636 return reload_module(v); | |
| 637 } | |
| 638 | |
| 639 static object * | |
|
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|
640 builtin_repr(self, v) |
|
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641 object *self; |
|
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|
642 object *v; |
|
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|
643 { |
|
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|
644 if (v == NULL) { |
|
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|
645 err_badarg(); |
|
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|
646 return NULL; |
|
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|
647 } |
|
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648 return reprobject(v); |
|
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|
649 } |
|
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|
650 |
|
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|
651 static object * |
|
1215
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|
652 builtin_round(self, args) |
|
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653 object *self; |
|
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|
654 object *args; |
|
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655 { |
|
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|
656 extern double floor PROTO((double)); |
|
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657 extern double ceil PROTO((double)); |
|
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|
658 double x; |
|
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|
659 double f; |
|
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|
660 int ndigits = 0; |
|
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661 int sign = 1; |
|
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|
662 int i; |
|
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|
663 if (!getargs(args, "d", &x)) { |
|
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|
664 err_clear(); |
|
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|
665 if (!getargs(args, "(di)", &x, &ndigits)) |
|
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|
666 return NULL; |
|
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|
667 } |
|
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|
668 f = 1.0; |
|
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|
669 for (i = ndigits; --i >= 0; ) |
|
9d6cf529bb71
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|
670 f = f*10.0; |
|
9d6cf529bb71
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|
671 for (i = ndigits; ++i <= 0; ) |
|
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|
672 f = f*0.1; |
|
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|
673 if (x >= 0.0) |
|
9d6cf529bb71
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|
674 return newfloatobject(floor(x*f + 0.5) / f); |
|
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|
675 else |
|
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|
676 return newfloatobject(ceil(x*f - 0.5) / f); |
|
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|
677 } |
|
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|
678 |
|
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|
679 static object * |
|
1094
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|
680 builtin_str(self, v) |
|
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* config.c: Added audioop to lists.
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|
681 object *self; |
|
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|
682 object *v; |
|
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* config.c: Added audioop to lists.
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|
683 { |
|
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|
684 if (v == NULL) { |
|
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|
685 err_badarg(); |
|
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|
686 return NULL; |
|
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|
687 } |
|
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|
688 if (is_stringobject(v)) { |
|
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* config.c: Added audioop to lists.
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|
689 INCREF(v); |
|
d2af6bdcb6d0
* config.c: Added audioop to lists.
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|
690 return v; |
|
d2af6bdcb6d0
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|
691 } |
|
d2af6bdcb6d0
* config.c: Added audioop to lists.
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|
692 else |
|
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* config.c: Added audioop to lists.
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|
693 return reprobject(v); |
|
d2af6bdcb6d0
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|
694 } |
|
d2af6bdcb6d0
* config.c: Added audioop to lists.
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changeset
|
695 |
|
d2af6bdcb6d0
* config.c: Added audioop to lists.
Guido van Rossum <guido@python.org>
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changeset
|
696 static object * |
| 86 | 697 builtin_type(self, v) |
| 698 object *self; | |
| 699 object *v; | |
| 700 { | |
| 701 if (v == NULL) { | |
|
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|
702 err_setstr(TypeError, "type() requires an argument"); |
| 86 | 703 return NULL; |
| 704 } | |
| 705 v = (object *)v->ob_type; | |
| 706 INCREF(v); | |
| 707 return v; | |
| 708 } | |
| 709 | |
| 710 static struct methodlist builtin_methods[] = { | |
|
480
c64c6702549d
Added "apply"; added "SyntaxError"; changed table lay-out.
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|
711 {"abs", builtin_abs}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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|
712 {"apply", builtin_apply}, |
|
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|
713 {"chr", builtin_chr}, |
|
1079
e4c6a0dd5c2b
* bltinmodule.c: added built-in function cmp(a, b)
Guido van Rossum <guido@python.org>
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changeset
|
714 {"cmp", builtin_cmp}, |
|
944
222f04f55083
Changes so that user-defined classes can implement operations invoked
Guido van Rossum <guido@python.org>
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926
diff
changeset
|
715 {"coerce", builtin_coerce}, |
|
480
c64c6702549d
Added "apply"; added "SyntaxError"; changed table lay-out.
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|
716 {"dir", builtin_dir}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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|
717 {"divmod", builtin_divmod}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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|
718 {"eval", builtin_eval}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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|
719 {"exec", builtin_exec}, |
| 673 | 720 {"execfile", builtin_execfile}, |
|
480
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Added "apply"; added "SyntaxError"; changed table lay-out.
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changeset
|
721 {"float", builtin_float}, |
|
644
59f9325bb8ec
Added getattr and setattr built-in functions.
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606
diff
changeset
|
722 {"getattr", builtin_getattr}, |
|
1257
1cabc2b6c970
* Changed all copyright messages to include 1993.
Guido van Rossum <guido@python.org>
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1252
diff
changeset
|
723 {"hasattr", builtin_hasattr}, |
|
1cabc2b6c970
* Changed all copyright messages to include 1993.
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diff
changeset
|
724 {"hash", builtin_hash}, |
|
480
c64c6702549d
Added "apply"; added "SyntaxError"; changed table lay-out.
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changeset
|
725 {"hex", builtin_hex}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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|
726 {"input", builtin_input}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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|
727 {"int", builtin_int}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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diff
changeset
|
728 {"len", builtin_len}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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|
729 {"long", builtin_long}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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|
730 {"max", builtin_max}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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|
731 {"min", builtin_min}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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diff
changeset
|
732 {"oct", builtin_oct}, |
|
662
aaff650d7e13
Get rid of comment about open().
Guido van Rossum <guido@python.org>
parents:
644
diff
changeset
|
733 {"open", builtin_open}, |
|
480
c64c6702549d
Added "apply"; added "SyntaxError"; changed table lay-out.
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diff
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|
734 {"ord", builtin_ord}, |
|
c64c6702549d
Added "apply"; added "SyntaxError"; changed table lay-out.
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diff
changeset
|
735 {"pow", builtin_pow}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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diff
changeset
|
736 {"range", builtin_range}, |
|
c64c6702549d
Added "apply"; added "SyntaxError"; changed table lay-out.
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diff
changeset
|
737 {"raw_input", builtin_raw_input}, |
|
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Added "apply"; added "SyntaxError"; changed table lay-out.
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|
738 {"reload", builtin_reload}, |
|
1094
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* config.c: Added audioop to lists.
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|
739 {"repr", builtin_repr}, |
|
1215
9d6cf529bb71
bltinmodule.c: added round(x, [n]); coerce() of two class instances
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changeset
|
740 {"round", builtin_round}, |
|
644
59f9325bb8ec
Added getattr and setattr built-in functions.
Guido van Rossum <guido@python.org>
parents:
606
diff
changeset
|
741 {"setattr", builtin_setattr}, |
|
1094
d2af6bdcb6d0
* config.c: Added audioop to lists.
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|
742 {"str", builtin_str}, |
|
480
c64c6702549d
Added "apply"; added "SyntaxError"; changed table lay-out.
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diff
changeset
|
743 {"type", builtin_type}, |
|
c64c6702549d
Added "apply"; added "SyntaxError"; changed table lay-out.
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diff
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|
744 {NULL, NULL}, |
| 86 | 745 }; |
| 746 | |
| 747 static object *builtin_dict; | |
| 748 | |
| 749 object * | |
| 750 getbuiltin(name) | |
|
332
be3052a77b7f
Change getbuiltin interface to get the name as an object;
Guido van Rossum <guido@python.org>
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301
diff
changeset
|
751 object *name; |
| 86 | 752 { |
|
332
be3052a77b7f
Change getbuiltin interface to get the name as an object;
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301
diff
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|
753 return dict2lookup(builtin_dict, name); |
| 86 | 754 } |
| 755 | |
| 756 /* Predefined exceptions */ | |
| 757 | |
| 495 | 758 object *AttributeError; |
| 86 | 759 object *EOFError; |
| 495 | 760 object *IOError; |
|
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761 object *ImportError; |
| 495 | 762 object *IndexError; |
| 763 object *KeyError; | |
| 764 object *KeyboardInterrupt; | |
| 86 | 765 object *MemoryError; |
| 766 object *NameError; | |
| 495 | 767 object *OverflowError; |
| 768 object *RuntimeError; | |
| 769 object *SyntaxError; | |
| 86 | 770 object *SystemError; |
| 545 | 771 object *SystemExit; |
| 495 | 772 object *TypeError; |
| 773 object *ValueError; | |
| 463 | 774 object *ZeroDivisionError; |
| 775 | |
| 86 | 776 static object * |
| 495 | 777 newstdexception(name) |
| 778 char *name; | |
| 86 | 779 { |
| 495 | 780 object *v = newstringobject(name); |
| 86 | 781 if (v == NULL || dictinsert(builtin_dict, name, v) != 0) |
| 782 fatal("no mem for new standard exception"); | |
| 783 return v; | |
| 784 } | |
| 785 | |
| 786 static void | |
| 787 initerrors() | |
| 788 { | |
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789 AttributeError = newstdexception("AttributeError"); |
| 495 | 790 EOFError = newstdexception("EOFError"); |
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791 IOError = newstdexception("IOError"); |
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792 ImportError = newstdexception("ImportError"); |
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793 IndexError = newstdexception("IndexError"); |
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794 KeyError = newstdexception("KeyError"); |
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795 KeyboardInterrupt = newstdexception("KeyboardInterrupt"); |
| 495 | 796 MemoryError = newstdexception("MemoryError"); |
| 797 NameError = newstdexception("NameError"); | |
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798 OverflowError = newstdexception("OverflowError"); |
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799 RuntimeError = newstdexception("RuntimeError"); |
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800 SyntaxError = newstdexception("SyntaxError"); |
| 495 | 801 SystemError = newstdexception("SystemError"); |
| 545 | 802 SystemExit = newstdexception("SystemExit"); |
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803 TypeError = newstdexception("TypeError"); |
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804 ValueError = newstdexception("ValueError"); |
| 495 | 805 ZeroDivisionError = newstdexception("ZeroDivisionError"); |
| 86 | 806 } |
| 807 | |
| 808 void | |
| 809 initbuiltin() | |
| 810 { | |
| 811 object *m; | |
| 812 m = initmodule("builtin", builtin_methods); | |
| 813 builtin_dict = getmoduledict(m); | |
| 814 INCREF(builtin_dict); | |
| 815 initerrors(); | |
| 816 (void) dictinsert(builtin_dict, "None", None); | |
| 817 } | |
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818 |
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819 /* Coerce two numeric types to the "larger" one. |
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820 Increment the reference count on each argument. |
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821 Return -1 and raise an exception if no coercion is possible |
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822 (and then no reference count is incremented). |
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823 */ |
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824 |
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825 int |
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826 coerce(pv, pw) |
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827 object **pv, **pw; |
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828 { |
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829 register object *v = *pv; |
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830 register object *w = *pw; |
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831 int res; |
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832 |
|
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833 if (v->ob_type == w->ob_type && !is_instanceobject(v)) { |
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834 INCREF(v); |
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835 INCREF(w); |
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836 return 0; |
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837 } |
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838 if (v->ob_type->tp_as_number && v->ob_type->tp_as_number->nb_coerce) { |
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839 res = (*v->ob_type->tp_as_number->nb_coerce)(pv, pw); |
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840 if (res <= 0) |
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841 return res; |
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842 } |
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843 if (w->ob_type->tp_as_number && w->ob_type->tp_as_number->nb_coerce) { |
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844 res = (*w->ob_type->tp_as_number->nb_coerce)(pw, pv); |
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845 if (res <= 0) |
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846 return res; |
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847 } |
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848 err_setstr(TypeError, "number coercion failed"); |
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849 return -1; |
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850 } |