Mercurial > cpython-lru_cache-weakref
annotate Python/bltinmodule.c @ 1354:fccd415e2eb8 legacy-trunk
* bltinmodule.c: removed exec() built-in function.
* Grammar: add exec statement; allow testlist in expr statement.
* ceval.c, compile.c, opcode.h: support exec statement;
avoid optimizing locals when it is used
* fileobject.{c,h}: add getfilename() internal function.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Mon, 18 Oct 1993 17:06:59 +0000 |
| parents | 6ee380349c84 |
| children | 1808ca5d8883 |
| 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 "sysmodule.h" | |
| 119 | 32 #include "bltinmodule.h" |
| 86 | 33 #include "import.h" |
| 34 #include "pythonrun.h" | |
| 35 #include "ceval.h" | |
| 36 #include "modsupport.h" | |
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37 #include "compile.h" |
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38 #include "eval.h" |
| 86 | 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, args) |
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55 object *self; |
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56 object *args; |
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57 { |
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58 object *func, *arglist; |
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59 if (!getargs(args, "(OO)", &func, &arglist)) |
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60 return NULL; |
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61 return call_object(func, arglist); |
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62 } |
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63 |
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64 static object * |
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65 builtin_chr(self, args) |
| 86 | 66 object *self; |
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67 object *args; |
| 86 | 68 { |
| 69 long x; | |
| 70 char s[1]; | |
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71 if (!getargs(args, "l", &x)) |
| 86 | 72 return NULL; |
| 73 if (x < 0 || x >= 256) { | |
| 463 | 74 err_setstr(ValueError, "chr() arg not in range(256)"); |
| 86 | 75 return NULL; |
| 76 } | |
| 77 s[0] = x; | |
| 78 return newsizedstringobject(s, 1); | |
| 79 } | |
| 80 | |
| 81 static object * | |
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82 builtin_cmp(self, args) |
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83 object *self; |
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84 object *args; |
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85 { |
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86 object *a, *b; |
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87 if (!getargs(args, "(OO)", &a, &b)) |
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88 return NULL; |
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89 return newintobject((long)cmpobject(a, b)); |
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90 } |
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91 |
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92 static object * |
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93 builtin_coerce(self, args) |
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94 object *self; |
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95 object *args; |
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96 { |
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97 object *v, *w; |
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98 object *res; |
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99 |
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100 if (!getargs(args, "(OO)", &v, &w)) |
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101 return NULL; |
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102 if (coerce(&v, &w) < 0) |
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103 return NULL; |
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104 res = mkvalue("(OO)", v, w); |
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105 DECREF(v); |
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106 DECREF(w); |
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107 return res; |
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108 } |
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109 |
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110 static object * |
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111 builtin_compile(self, args) |
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112 object *self; |
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113 object *args; |
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114 { |
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115 char *str; |
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116 char *filename; |
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117 char *startstr; |
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118 int start; |
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119 if (!getargs(args, "(sss)", &str, &filename, &startstr)) |
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120 return NULL; |
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121 if (strcmp(startstr, "exec") == 0) |
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122 start = file_input; |
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123 else if (strcmp(startstr, "eval") == 0) |
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124 start = eval_input; |
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125 else { |
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126 err_setstr(ValueError, |
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127 "compile() mode must be 'exec' or 'eval'"); |
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128 return NULL; |
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129 } |
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130 return compile_string(str, filename, start); |
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131 } |
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132 |
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133 static object * |
| 86 | 134 builtin_dir(self, v) |
| 135 object *self; | |
| 136 object *v; | |
| 137 { | |
| 138 object *d; | |
| 139 if (v == NULL) { | |
| 140 d = getlocals(); | |
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141 INCREF(d); |
| 86 | 142 } |
| 143 else { | |
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144 d = getattr(v, "__dict__"); |
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145 if (d == NULL) { |
| 86 | 146 err_setstr(TypeError, |
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147 "dir() argument must have __dict__ attribute"); |
| 86 | 148 return NULL; |
| 149 } | |
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150 } |
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151 if (is_dictobject(d)) { |
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152 v = getdictkeys(d); |
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153 if (sortlist(v) != 0) { |
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154 DECREF(v); |
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155 v = NULL; |
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156 } |
| 86 | 157 } |
|
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158 else { |
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159 v = newlistobject(0); |
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160 } |
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161 DECREF(d); |
| 86 | 162 return v; |
| 163 } | |
| 164 | |
| 165 static object * | |
|
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166 builtin_divmod(self, args) |
| 86 | 167 object *self; |
|
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168 object *args; |
| 86 | 169 { |
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170 object *v, *w, *x; |
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171 if (!getargs(args, "(OO)", &v, &w)) |
| 86 | 172 return NULL; |
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173 if (v->ob_type->tp_as_number == NULL || |
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174 w->ob_type->tp_as_number == NULL) { |
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223
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175 err_setstr(TypeError, "divmod() requires numeric arguments"); |
| 86 | 176 return NULL; |
| 177 } | |
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178 if (coerce(&v, &w) != 0) |
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179 return NULL; |
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180 x = (*v->ob_type->tp_as_number->nb_divmod)(v, w); |
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181 DECREF(v); |
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182 DECREF(w); |
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183 return x; |
| 86 | 184 } |
| 185 | |
| 186 static object * | |
| 187 exec_eval(v, start) | |
| 188 object *v; | |
| 189 int start; | |
| 190 { | |
| 191 object *str = NULL, *globals = NULL, *locals = NULL; | |
|
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192 char *s; |
| 86 | 193 int n; |
| 194 if (v != NULL) { | |
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195 if (is_tupleobject(v) && |
| 86 | 196 ((n = gettuplesize(v)) == 2 || n == 3)) { |
| 197 str = gettupleitem(v, 0); | |
| 198 globals = gettupleitem(v, 1); | |
| 199 if (n == 3) | |
| 200 locals = gettupleitem(v, 2); | |
| 201 } | |
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202 else |
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203 str = v; |
| 86 | 204 } |
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205 if (str == NULL || (!is_stringobject(str) && !is_codeobject(str)) || |
| 86 | 206 globals != NULL && !is_dictobject(globals) || |
| 207 locals != NULL && !is_dictobject(locals)) { | |
| 208 err_setstr(TypeError, | |
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209 "exec/eval arguments must be (string|code)[,dict[,dict]]"); |
| 86 | 210 return NULL; |
| 211 } | |
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212 if (is_codeobject(str)) |
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213 return eval_code((codeobject *) str, globals, locals, |
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214 (object *)NULL, (object *)NULL); |
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215 s = getstringvalue(str); |
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216 if (strlen(s) != getstringsize(str)) { |
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217 err_setstr(ValueError, "embedded '\\0' in string arg"); |
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218 return NULL; |
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219 } |
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220 if (start == eval_input) { |
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221 while (*s == ' ' || *s == '\t') |
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222 s++; |
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223 } |
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224 return run_string(s, start, globals, locals); |
| 86 | 225 } |
| 226 | |
| 227 static object * | |
| 228 builtin_eval(self, v) | |
| 229 object *self; | |
| 230 object *v; | |
| 231 { | |
| 232 return exec_eval(v, eval_input); | |
| 233 } | |
| 234 | |
| 235 static object * | |
| 673 | 236 builtin_execfile(self, v) |
| 237 object *self; | |
| 238 object *v; | |
| 239 { | |
| 240 object *str = NULL, *globals = NULL, *locals = NULL, *w; | |
| 241 FILE* fp; | |
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242 char *s; |
| 673 | 243 int n; |
| 244 if (v != NULL) { | |
| 245 if (is_stringobject(v)) | |
| 246 str = v; | |
| 247 else if (is_tupleobject(v) && | |
| 248 ((n = gettuplesize(v)) == 2 || n == 3)) { | |
| 249 str = gettupleitem(v, 0); | |
| 250 globals = gettupleitem(v, 1); | |
| 251 if (n == 3) | |
| 252 locals = gettupleitem(v, 2); | |
| 253 } | |
| 254 } | |
| 255 if (str == NULL || !is_stringobject(str) || | |
| 256 globals != NULL && !is_dictobject(globals) || | |
| 257 locals != NULL && !is_dictobject(locals)) { | |
| 258 err_setstr(TypeError, | |
| 259 "execfile arguments must be filename[,dict[,dict]]"); | |
| 260 return NULL; | |
| 261 } | |
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262 s = getstringvalue(str); |
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263 if (strlen(s) != getstringsize(str)) { |
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264 err_setstr(ValueError, "embedded '\\0' in string arg"); |
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265 return NULL; |
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266 } |
| 926 | 267 BGN_SAVE |
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268 fp = fopen(s, "r"); |
| 926 | 269 END_SAVE |
| 673 | 270 if (fp == NULL) { |
| 271 err_setstr(IOError, "execfile cannot open the file argument"); | |
| 272 return NULL; | |
| 273 } | |
| 274 w = run_file(fp, getstringvalue(str), file_input, globals, locals); | |
| 926 | 275 BGN_SAVE |
| 673 | 276 fclose(fp); |
| 926 | 277 END_SAVE |
| 673 | 278 return w; |
| 279 } | |
| 280 | |
| 281 static object * | |
| 86 | 282 builtin_float(self, v) |
| 283 object *self; | |
| 284 object *v; | |
| 285 { | |
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286 number_methods *nb; |
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287 |
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288 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
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289 nb->nb_float == NULL) { |
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290 err_setstr(TypeError, |
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291 "float() argument can't be converted to float"); |
|
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292 return NULL; |
|
223
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293 } |
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294 return (*nb->nb_float)(v); |
| 86 | 295 } |
| 296 | |
| 297 static object * | |
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298 builtin_getattr(self, args) |
|
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299 object *self; |
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300 object *args; |
|
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301 { |
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302 object *v; |
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303 object *name; |
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304 if (!getargs(args, "(OS)", &v, &name)) |
|
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305 return NULL; |
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306 return getattro(v, name); |
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307 } |
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308 |
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309 static object * |
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310 builtin_hasattr(self, args) |
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311 object *self; |
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312 object *args; |
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313 { |
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314 object *v; |
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315 object *name; |
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316 if (!getargs(args, "(OS)", &v, &name)) |
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317 return NULL; |
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318 v = getattro(v, name); |
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319 if (v == NULL) { |
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320 err_clear(); |
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321 return newintobject(0L); |
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322 } |
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323 DECREF(v); |
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324 return newintobject(1L); |
|
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325 } |
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326 |
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327 static object * |
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328 builtin_id(self, args) |
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329 object *self; |
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330 object *args; |
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331 { |
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332 object *v; |
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333 if (!getargs(args, "O", &v)) |
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334 return NULL; |
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335 return newintobject((long)v); |
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336 } |
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337 |
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338 static object * |
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339 builtin_setattr(self, args) |
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340 object *self; |
|
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341 object *args; |
|
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342 { |
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343 object *v; |
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344 object *name; |
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345 object *value; |
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346 if (!getargs(args, "(OSO)", &v, &name, &value)) |
|
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347 return NULL; |
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348 if (setattro(v, name, value) != 0) |
|
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349 return NULL; |
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350 INCREF(None); |
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351 return None; |
|
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352 } |
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353 |
|
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354 static object * |
|
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355 builtin_hash(self, args) |
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356 object *self; |
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357 object *args; |
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358 { |
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359 object *v; |
|
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360 long x; |
|
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|
361 if (!getargs(args, "O", &v)) |
|
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362 return NULL; |
|
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|
363 x = hashobject(v); |
|
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364 if (x == -1) |
|
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365 return NULL; |
|
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366 return newintobject(x); |
|
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367 } |
|
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368 |
|
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369 static object * |
|
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|
370 builtin_hex(self, v) |
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|
371 object *self; |
|
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372 object *v; |
|
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373 { |
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374 number_methods *nb; |
|
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375 |
|
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376 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
|
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377 nb->nb_hex == NULL) { |
|
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378 err_setstr(TypeError, |
|
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379 "hex() argument can't be converted to hex"); |
|
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380 return NULL; |
|
404
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|
381 } |
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382 return (*nb->nb_hex)(v); |
|
404
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383 } |
|
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|
384 |
|
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385 static object *builtin_raw_input PROTO((object *, object *)); |
|
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386 |
|
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|
387 static object * |
| 86 | 388 builtin_input(self, v) |
| 389 object *self; | |
| 390 object *v; | |
| 391 { | |
|
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392 object *line = builtin_raw_input(self, v); |
|
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393 if (line == NULL) |
|
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394 return line; |
|
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395 v = exec_eval(line, eval_input); |
|
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396 DECREF(line); |
|
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397 return v; |
| 86 | 398 } |
| 399 | |
| 400 static object * | |
| 401 builtin_int(self, v) | |
| 402 object *self; | |
| 403 object *v; | |
| 404 { | |
|
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|
405 number_methods *nb; |
|
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406 |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
407 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
408 nb->nb_int == NULL) { |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
409 err_setstr(TypeError, |
|
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|
410 "int() argument can't be converted to int"); |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
411 return NULL; |
| 86 | 412 } |
|
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|
413 return (*nb->nb_int)(v); |
| 86 | 414 } |
| 415 | |
| 416 static object * | |
| 417 builtin_len(self, v) | |
| 418 object *self; | |
| 419 object *v; | |
| 420 { | |
| 421 long len; | |
| 422 typeobject *tp; | |
| 423 if (v == NULL) { | |
| 424 err_setstr(TypeError, "len() without argument"); | |
| 425 return NULL; | |
| 426 } | |
| 427 tp = v->ob_type; | |
| 428 if (tp->tp_as_sequence != NULL) { | |
| 429 len = (*tp->tp_as_sequence->sq_length)(v); | |
| 430 } | |
| 431 else if (tp->tp_as_mapping != NULL) { | |
| 432 len = (*tp->tp_as_mapping->mp_length)(v); | |
| 433 } | |
| 434 else { | |
| 435 err_setstr(TypeError, "len() of unsized object"); | |
| 436 return NULL; | |
| 437 } | |
|
944
222f04f55083
Changes so that user-defined classes can implement operations invoked
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diff
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|
438 if (len < 0) |
|
222f04f55083
Changes so that user-defined classes can implement operations invoked
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diff
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|
439 return NULL; |
|
222f04f55083
Changes so that user-defined classes can implement operations invoked
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diff
changeset
|
440 else |
|
222f04f55083
Changes so that user-defined classes can implement operations invoked
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diff
changeset
|
441 return newintobject(len); |
| 86 | 442 } |
| 443 | |
| 444 static object * | |
|
223
6693c5d87f3a
Added long() and support for longs in int() and float();
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diff
changeset
|
445 builtin_long(self, v) |
|
6693c5d87f3a
Added long() and support for longs in int() and float();
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|
446 object *self; |
|
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Added long() and support for longs in int() and float();
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|
447 object *v; |
|
6693c5d87f3a
Added long() and support for longs in int() and float();
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|
448 { |
|
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|
449 number_methods *nb; |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
450 |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
451 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
452 nb->nb_long == NULL) { |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
453 err_setstr(TypeError, |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
454 "long() argument can't be converted to long"); |
|
2ed511171809
Made builtins int(), long(), float(), oct() and hex() more generic.
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|
455 return NULL; |
|
223
6693c5d87f3a
Added long() and support for longs in int() and float();
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|
456 } |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
457 return (*nb->nb_long)(v); |
|
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Added long() and support for longs in int() and float();
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|
458 } |
|
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Added long() and support for longs in int() and float();
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|
459 |
|
6693c5d87f3a
Added long() and support for longs in int() and float();
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|
460 static object * |
| 86 | 461 min_max(v, sign) |
| 462 object *v; | |
| 463 int sign; | |
| 464 { | |
| 465 int i, n, cmp; | |
| 466 object *w, *x; | |
| 467 sequence_methods *sq; | |
| 468 if (v == NULL) { | |
| 469 err_setstr(TypeError, "min() or max() without argument"); | |
| 470 return NULL; | |
| 471 } | |
| 472 sq = v->ob_type->tp_as_sequence; | |
| 473 if (sq == NULL) { | |
| 474 err_setstr(TypeError, "min() or max() of non-sequence"); | |
| 475 return NULL; | |
| 476 } | |
| 477 n = (*sq->sq_length)(v); | |
|
1096
ce718457b172
* classobject.c: in instance_lenth, test result of call_object
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diff
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|
478 if (n < 0) |
|
ce718457b172
* classobject.c: in instance_lenth, test result of call_object
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|
479 return NULL; |
| 86 | 480 if (n == 0) { |
| 463 | 481 err_setstr(ValueError, "min() or max() of empty sequence"); |
| 86 | 482 return NULL; |
| 483 } | |
| 484 w = (*sq->sq_item)(v, 0); /* Implies INCREF */ | |
| 485 for (i = 1; i < n; i++) { | |
| 486 x = (*sq->sq_item)(v, i); /* Implies INCREF */ | |
| 487 cmp = cmpobject(x, w); | |
| 488 if (cmp * sign > 0) { | |
| 489 DECREF(w); | |
| 490 w = x; | |
| 491 } | |
| 492 else | |
| 493 DECREF(x); | |
| 494 } | |
| 495 return w; | |
| 496 } | |
| 497 | |
| 498 static object * | |
| 499 builtin_min(self, v) | |
| 500 object *self; | |
| 501 object *v; | |
| 502 { | |
| 503 return min_max(v, -1); | |
| 504 } | |
| 505 | |
| 506 static object * | |
| 507 builtin_max(self, v) | |
| 508 object *self; | |
| 509 object *v; | |
| 510 { | |
| 511 return min_max(v, 1); | |
| 512 } | |
| 513 | |
| 514 static object * | |
|
404
9cd38d1ac391
Made dir() more robust.
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diff
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|
515 builtin_oct(self, v) |
|
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Made dir() more robust.
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|
516 object *self; |
|
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Made dir() more robust.
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changeset
|
517 object *v; |
|
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Made dir() more robust.
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diff
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|
518 { |
|
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diff
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|
519 number_methods *nb; |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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diff
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|
520 |
|
2ed511171809
Made builtins int(), long(), float(), oct() and hex() more generic.
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|
521 if (v == NULL || (nb = v->ob_type->tp_as_number) == NULL || |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
522 nb->nb_oct == NULL) { |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
523 err_setstr(TypeError, |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
524 "oct() argument can't be converted to oct"); |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
525 return NULL; |
|
404
9cd38d1ac391
Made dir() more robust.
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diff
changeset
|
526 } |
|
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Made builtins int(), long(), float(), oct() and hex() more generic.
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|
527 return (*nb->nb_oct)(v); |
|
404
9cd38d1ac391
Made dir() more robust.
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|
528 } |
|
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Made dir() more robust.
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diff
changeset
|
529 |
|
9cd38d1ac391
Made dir() more robust.
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385
diff
changeset
|
530 static object * |
|
959
68b302ad84a1
use getargs() in more cases;
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diff
changeset
|
531 builtin_open(self, args) |
| 86 | 532 object *self; |
|
959
68b302ad84a1
use getargs() in more cases;
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diff
changeset
|
533 object *args; |
| 86 | 534 { |
|
959
68b302ad84a1
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535 char *name, *mode; |
|
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536 if (!getargs(args, "(ss)", &name, &mode)) |
| 86 | 537 return NULL; |
|
959
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538 return newfileobject(name, mode); |
| 86 | 539 } |
| 540 | |
| 541 static object * | |
|
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542 builtin_ord(self, args) |
| 86 | 543 object *self; |
|
959
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544 object *args; |
| 86 | 545 { |
|
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546 char *s; |
|
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547 int len; |
|
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548 if (!getargs(args, "s#", &s, &len)) |
| 86 | 549 return NULL; |
|
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550 if (len != 1) { |
| 463 | 551 err_setstr(ValueError, "ord() arg must have length 1"); |
| 86 | 552 return NULL; |
| 553 } | |
|
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554 return newintobject((long)(s[0] & 0xff)); |
| 86 | 555 } |
| 556 | |
| 557 static object * | |
|
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558 builtin_pow(self, args) |
|
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559 object *self; |
|
301
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560 object *args; |
|
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561 { |
|
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562 object *v, *w, *x; |
|
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563 if (!getargs(args, "(OO)", &v, &w)) |
|
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564 return NULL; |
|
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565 if (v->ob_type->tp_as_number == NULL || |
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566 w->ob_type->tp_as_number == NULL) { |
|
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567 err_setstr(TypeError, "pow() requires numeric arguments"); |
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568 return NULL; |
|
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569 } |
|
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570 if (coerce(&v, &w) != 0) |
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571 return NULL; |
|
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572 x = (*v->ob_type->tp_as_number->nb_power)(v, w); |
|
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573 DECREF(v); |
|
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574 DECREF(w); |
|
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575 return x; |
|
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576 } |
|
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577 |
|
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578 static object * |
| 86 | 579 builtin_range(self, v) |
| 580 object *self; | |
| 581 object *v; | |
| 582 { | |
| 583 static char *errmsg = "range() requires 1-3 int arguments"; | |
| 584 int i, n; | |
| 585 long ilow, ihigh, istep; | |
| 586 if (v != NULL && is_intobject(v)) { | |
| 587 ilow = 0; ihigh = getintvalue(v); istep = 1; | |
| 588 } | |
| 589 else if (v == NULL || !is_tupleobject(v)) { | |
| 590 err_setstr(TypeError, errmsg); | |
| 591 return NULL; | |
| 592 } | |
| 593 else { | |
| 594 n = gettuplesize(v); | |
| 595 if (n < 1 || n > 3) { | |
| 596 err_setstr(TypeError, errmsg); | |
| 597 return NULL; | |
| 598 } | |
| 599 for (i = 0; i < n; i++) { | |
| 600 if (!is_intobject(gettupleitem(v, i))) { | |
| 601 err_setstr(TypeError, errmsg); | |
| 602 return NULL; | |
| 603 } | |
| 604 } | |
| 605 if (n == 3) { | |
| 606 istep = getintvalue(gettupleitem(v, 2)); | |
| 607 --n; | |
| 608 } | |
| 609 else | |
| 610 istep = 1; | |
| 611 ihigh = getintvalue(gettupleitem(v, --n)); | |
| 612 if (n > 0) | |
| 613 ilow = getintvalue(gettupleitem(v, 0)); | |
| 614 else | |
| 615 ilow = 0; | |
| 616 } | |
| 617 if (istep == 0) { | |
| 463 | 618 err_setstr(ValueError, "zero step for range()"); |
| 86 | 619 return NULL; |
| 620 } | |
| 621 /* XXX ought to check overflow of subtraction */ | |
| 622 if (istep > 0) | |
| 623 n = (ihigh - ilow + istep - 1) / istep; | |
| 624 else | |
| 625 n = (ihigh - ilow + istep + 1) / istep; | |
| 626 if (n < 0) | |
| 627 n = 0; | |
| 628 v = newlistobject(n); | |
| 629 if (v == NULL) | |
| 630 return NULL; | |
| 631 for (i = 0; i < n; i++) { | |
| 632 object *w = newintobject(ilow); | |
| 633 if (w == NULL) { | |
| 634 DECREF(v); | |
| 635 return NULL; | |
| 636 } | |
| 637 setlistitem(v, i, w); | |
| 638 ilow += istep; | |
| 639 } | |
| 640 return v; | |
| 641 } | |
| 642 | |
| 643 static object * | |
| 644 builtin_raw_input(self, v) | |
| 645 object *self; | |
| 646 object *v; | |
| 647 { | |
|
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Modified most (but not yet all) I/O to always go through sys.stdout or
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648 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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|
649 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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|
650 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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|
651 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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|
652 } |
| 86 | 653 flushline(); |
|
284
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|
654 if (v != NULL) { |
|
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|
655 if (writeobject(v, f, PRINT_RAW) != 0) |
|
284
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|
656 return NULL; |
|
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|
657 } |
|
182
59ffb6d4b34c
Use fileobject's filegetline() to implement unlimited raw_input().
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|
658 return filegetline(sysget("stdin"), -1); |
| 86 | 659 } |
| 660 | |
| 661 static object * | |
| 662 builtin_reload(self, v) | |
| 663 object *self; | |
| 664 object *v; | |
| 665 { | |
| 666 return reload_module(v); | |
| 667 } | |
| 668 | |
| 669 static object * | |
|
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|
670 builtin_repr(self, v) |
|
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671 object *self; |
|
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|
672 object *v; |
|
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|
673 { |
|
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|
674 if (v == NULL) { |
|
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|
675 err_badarg(); |
|
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|
676 return NULL; |
|
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|
677 } |
|
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|
678 return reprobject(v); |
|
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|
679 } |
|
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|
680 |
|
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|
681 static object * |
|
1215
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bltinmodule.c: added round(x, [n]); coerce() of two class instances
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|
682 builtin_round(self, args) |
|
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|
683 object *self; |
|
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|
684 object *args; |
|
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|
685 { |
|
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|
686 extern double floor PROTO((double)); |
|
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|
687 extern double ceil PROTO((double)); |
|
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|
688 double x; |
|
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|
689 double f; |
|
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|
690 int ndigits = 0; |
|
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|
691 int sign = 1; |
|
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|
692 int i; |
|
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|
693 if (!getargs(args, "d", &x)) { |
|
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|
694 err_clear(); |
|
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|
695 if (!getargs(args, "(di)", &x, &ndigits)) |
|
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|
696 return NULL; |
|
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|
697 } |
|
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|
698 f = 1.0; |
|
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|
699 for (i = ndigits; --i >= 0; ) |
|
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700 f = f*10.0; |
|
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|
701 for (i = ndigits; ++i <= 0; ) |
|
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|
702 f = f*0.1; |
|
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|
703 if (x >= 0.0) |
|
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|
704 return newfloatobject(floor(x*f + 0.5) / f); |
|
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|
705 else |
|
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|
706 return newfloatobject(ceil(x*f - 0.5) / f); |
|
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|
707 } |
|
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|
708 |
|
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|
709 static object * |
|
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710 builtin_str(self, v) |
|
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711 object *self; |
|
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|
712 object *v; |
|
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713 { |
|
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714 if (v == NULL) { |
|
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|
715 err_badarg(); |
|
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716 return NULL; |
|
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717 } |
|
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718 if (is_stringobject(v)) { |
|
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|
719 INCREF(v); |
|
d2af6bdcb6d0
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720 return v; |
|
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721 } |
|
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722 else |
|
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|
723 return reprobject(v); |
|
d2af6bdcb6d0
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|
724 } |
|
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725 |
|
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|
726 static object * |
| 86 | 727 builtin_type(self, v) |
| 728 object *self; | |
| 729 object *v; | |
| 730 { | |
| 731 if (v == NULL) { | |
|
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732 err_setstr(TypeError, "type() requires an argument"); |
| 86 | 733 return NULL; |
| 734 } | |
| 735 v = (object *)v->ob_type; | |
| 736 INCREF(v); | |
| 737 return v; | |
| 738 } | |
| 739 | |
| 740 static struct methodlist builtin_methods[] = { | |
|
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741 {"abs", builtin_abs}, |
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742 {"apply", builtin_apply}, |
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743 {"chr", builtin_chr}, |
|
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744 {"cmp", builtin_cmp}, |
|
944
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745 {"coerce", builtin_coerce}, |
|
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746 {"compile", builtin_compile}, |
|
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747 {"dir", builtin_dir}, |
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748 {"divmod", builtin_divmod}, |
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749 {"eval", builtin_eval}, |
| 673 | 750 {"execfile", builtin_execfile}, |
|
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751 {"float", builtin_float}, |
|
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752 {"getattr", builtin_getattr}, |
|
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753 {"hasattr", builtin_hasattr}, |
|
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754 {"hash", builtin_hash}, |
|
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755 {"hex", builtin_hex}, |
|
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756 {"id", builtin_id}, |
|
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757 {"input", builtin_input}, |
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758 {"int", builtin_int}, |
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759 {"len", builtin_len}, |
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760 {"long", builtin_long}, |
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761 {"max", builtin_max}, |
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762 {"min", builtin_min}, |
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763 {"oct", builtin_oct}, |
|
662
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764 {"open", builtin_open}, |
|
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765 {"ord", builtin_ord}, |
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766 {"pow", builtin_pow}, |
|
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767 {"range", builtin_range}, |
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768 {"raw_input", builtin_raw_input}, |
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769 {"reload", builtin_reload}, |
|
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770 {"repr", builtin_repr}, |
|
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771 {"round", builtin_round}, |
|
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772 {"setattr", builtin_setattr}, |
|
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773 {"str", builtin_str}, |
|
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774 {"type", builtin_type}, |
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775 {NULL, NULL}, |
| 86 | 776 }; |
| 777 | |
| 778 static object *builtin_dict; | |
| 779 | |
| 780 object * | |
| 781 getbuiltin(name) | |
|
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782 object *name; |
| 86 | 783 { |
|
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784 return dict2lookup(builtin_dict, name); |
| 86 | 785 } |
| 786 | |
| 787 /* Predefined exceptions */ | |
| 788 | |
|
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789 object *AccessError; |
| 495 | 790 object *AttributeError; |
|
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791 object *ConflictError; |
| 86 | 792 object *EOFError; |
| 495 | 793 object *IOError; |
|
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794 object *ImportError; |
| 495 | 795 object *IndexError; |
| 796 object *KeyError; | |
| 797 object *KeyboardInterrupt; | |
| 86 | 798 object *MemoryError; |
| 799 object *NameError; | |
| 495 | 800 object *OverflowError; |
| 801 object *RuntimeError; | |
| 802 object *SyntaxError; | |
| 86 | 803 object *SystemError; |
| 545 | 804 object *SystemExit; |
| 495 | 805 object *TypeError; |
| 806 object *ValueError; | |
| 463 | 807 object *ZeroDivisionError; |
| 808 | |
| 86 | 809 static object * |
| 495 | 810 newstdexception(name) |
| 811 char *name; | |
| 86 | 812 { |
| 495 | 813 object *v = newstringobject(name); |
| 86 | 814 if (v == NULL || dictinsert(builtin_dict, name, v) != 0) |
| 815 fatal("no mem for new standard exception"); | |
| 816 return v; | |
| 817 } | |
| 818 | |
| 819 static void | |
| 820 initerrors() | |
| 821 { | |
|
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822 AccessError = newstdexception("AccessError"); |
|
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823 AttributeError = newstdexception("AttributeError"); |
|
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824 ConflictError = newstdexception("ConflictError"); |
| 495 | 825 EOFError = newstdexception("EOFError"); |
|
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826 IOError = newstdexception("IOError"); |
|
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827 ImportError = newstdexception("ImportError"); |
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828 IndexError = newstdexception("IndexError"); |
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829 KeyError = newstdexception("KeyError"); |
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830 KeyboardInterrupt = newstdexception("KeyboardInterrupt"); |
| 495 | 831 MemoryError = newstdexception("MemoryError"); |
| 832 NameError = newstdexception("NameError"); | |
|
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833 OverflowError = newstdexception("OverflowError"); |
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834 RuntimeError = newstdexception("RuntimeError"); |
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|
835 SyntaxError = newstdexception("SyntaxError"); |
| 495 | 836 SystemError = newstdexception("SystemError"); |
| 545 | 837 SystemExit = newstdexception("SystemExit"); |
|
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838 TypeError = newstdexception("TypeError"); |
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839 ValueError = newstdexception("ValueError"); |
| 495 | 840 ZeroDivisionError = newstdexception("ZeroDivisionError"); |
| 86 | 841 } |
| 842 | |
| 843 void | |
| 844 initbuiltin() | |
| 845 { | |
| 846 object *m; | |
| 847 m = initmodule("builtin", builtin_methods); | |
| 848 builtin_dict = getmoduledict(m); | |
| 849 INCREF(builtin_dict); | |
| 850 initerrors(); | |
| 851 (void) dictinsert(builtin_dict, "None", None); | |
| 852 } | |
|
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853 |
|
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854 /* Coerce two numeric types to the "larger" one. |
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855 Increment the reference count on each argument. |
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856 Return -1 and raise an exception if no coercion is possible |
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857 (and then no reference count is incremented). |
|
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858 */ |
|
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859 |
|
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860 int |
|
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861 coerce(pv, pw) |
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862 object **pv, **pw; |
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863 { |
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864 register object *v = *pv; |
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865 register object *w = *pw; |
|
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866 int res; |
|
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867 |
|
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868 if (v->ob_type == w->ob_type && !is_instanceobject(v)) { |
|
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869 INCREF(v); |
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870 INCREF(w); |
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871 return 0; |
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872 } |
|
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873 if (v->ob_type->tp_as_number && v->ob_type->tp_as_number->nb_coerce) { |
|
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874 res = (*v->ob_type->tp_as_number->nb_coerce)(pv, pw); |
|
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875 if (res <= 0) |
|
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876 return res; |
|
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877 } |
|
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878 if (w->ob_type->tp_as_number && w->ob_type->tp_as_number->nb_coerce) { |
|
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879 res = (*w->ob_type->tp_as_number->nb_coerce)(pw, pv); |
|
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880 if (res <= 0) |
|
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881 return res; |
|
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882 } |
|
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883 err_setstr(TypeError, "number coercion failed"); |
|
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884 return -1; |
|
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885 } |