Mercurial > cpython-lru_cache-weakref

annotate Python/import.c @ 1843:8294bbd94535 legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added delattr()
author Guido van Rossum <guido@python.org>
date Mon, 29 Aug 1994 12:53:40 +0000
parents 06570429f062
children d1e6c9a64a56
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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
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25 /* Module definition and import implementation */
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26
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27 #include "allobjects.h"
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28
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29 #include "node.h"
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30 #include "token.h"
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31 #include "graminit.h"
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32 #include "import.h"
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33 #include "errcode.h"
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34 #include "sysmodule.h"
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35 #include "pythonrun.h"
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36 #include "marshal.h"
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37 #include "compile.h"
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38 #include "eval.h"
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39 #include "osdefs.h"
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40
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41 extern int verbose; /* Defined in pythonmain.c */
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43 extern long getmtime(); /* Defined in posixmodule.c */
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44
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45 #ifdef DEBUG
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46 #define D(x) x
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47 #else
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48 #define D(x)
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49 #endif
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50
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51 #ifdef USE_DL
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52 #ifdef SUN_SHLIB
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53 #include <dlfcn.h>
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54 typedef void (*dl_funcptr)();
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55 #else
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56 #include "dl.h"
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57 #endif /* SUN_SHLIB */
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58
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59 extern char *argv0;
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60 #endif
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61
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62 /* Magic word to reject .pyc files generated by other Python versions */
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63
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64 #define MAGIC 0x999902L /* Increment by one for each incompatible change */
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65
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66 static object *modules;
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67
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68 /* Forward */
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69 static int init_builtin PROTO((char *));
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70
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71 /* Initialization */
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72
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73 void
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74 initimport()
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75 {
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76 if ((modules = newdictobject()) == NULL)
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77 fatal("no mem for dictionary of modules");
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78 }
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79
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80 object *
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81 get_modules()
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82 {
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83 return modules;
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84 }
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85
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86 object *
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87 add_module(name)
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88 char *name;
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89 {
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90 object *m;
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91 if ((m = dictlookup(modules, name)) != NULL && is_moduleobject(m))
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92 return m;
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93 m = newmoduleobject(name);
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94 if (m == NULL)
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95 return NULL;
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96 if (dictinsert(modules, name, m) != 0) {
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97 DECREF(m);
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98 return NULL;
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99 }
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100 DECREF(m); /* Yes, it still exists, in modules! */
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101 return m;
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102 }
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103
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104 enum filetype {SEARCH_ERROR, PY_SOURCE, PY_COMPILED, C_EXTENSION};
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105
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106 static struct filedescr {
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107 char *suffix;
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108 char *mode;
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109 enum filetype type;
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110 } filetab[] = {
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111 #ifdef USE_DL
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112 #ifdef SUN_SHLIB
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113 {"module.so", "rb", C_EXTENSION},
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114 #else
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115 {"module.o", "rb", C_EXTENSION},
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116 #endif /* SUN_SHLIB */
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117 #endif /* USE_DL */
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118 {".py", "r", PY_SOURCE},
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119 {".pyc", "rb", PY_COMPILED},
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120 {0, 0}
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121 };
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123 static object *
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124 get_module(m, name, m_ret)
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125 /*module*/object *m;
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126 char *name;
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127 object **m_ret;
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128 {
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129 int err, npath, i, len;
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130 long magic;
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131 long mtime, pyc_mtime;
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132 char namebuf[MAXPATHLEN+1];
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133 struct filedescr *fdp;
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134 FILE *fp = NULL, *fpc = NULL;
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135 node *n = NULL;
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136 object *path, *v, *d;
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137 codeobject *co = NULL;
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138
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139 path = sysget("path");
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140 if (path == NULL || !is_listobject(path)) {
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141 err_setstr(ImportError,
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142 "sys.path must be list of directory names");
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143 return NULL;
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144 }
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145 npath = getlistsize(path);
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diff changeset
146 for (i = 0; i < npath; i++) {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
147 v = getlistitem(path, i);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
148 if (!is_stringobject(v))
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
149 continue;
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
150 strcpy(namebuf, getstringvalue(v));
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
151 len = getstringsize(v);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
152 if (len > 0 && namebuf[len-1] != SEP)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
153 namebuf[len++] = SEP;
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
154 strcpy(namebuf+len, name);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
155 len += strlen(name);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
156 for (fdp = filetab; fdp->suffix != NULL; fdp++) {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
157 strcpy(namebuf+len, fdp->suffix);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
158 if (verbose > 1)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
159 fprintf(stderr, "# trying %s\n", namebuf);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
160 fp = fopen(namebuf, fdp->mode);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
161 if (fp != NULL)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
162 break;
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
163 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
164 if (fp != NULL)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
165 break;
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
166 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
167 if (fp == NULL) {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
168 sprintf(namebuf, "No module named %s", name);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
169 err_setstr(ImportError, namebuf);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
170 return NULL;
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
171 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
172
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
173 switch (fdp->type) {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
174
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
175 case PY_SOURCE:
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
176 mtime = getmtime(namebuf);
1415
06570429f062 * import.c (get_module): pass .py filename to parse_file, not .pyc filename!
Guido van Rossum <guido@python.org>
parents: 1410
diff changeset
177 len = strlen(namebuf);
06570429f062 * import.c (get_module): pass .py filename to parse_file, not .pyc filename!
Guido van Rossum <guido@python.org>
parents: 1410
diff changeset
178 strcpy(namebuf + len, "c");
1410
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
179 fpc = fopen(namebuf, "rb");
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
180 if (fpc != NULL) {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
181 magic = rd_long(fpc);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
182 if (magic != MAGIC) {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
183 if (verbose)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
184 fprintf(stderr,
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
185 "# %s.pyc has bad magic\n",
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
186 name);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
187 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
188 else {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
189 pyc_mtime = rd_long(fpc);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
190 if (pyc_mtime != mtime) {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
191 if (verbose)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
192 fprintf(stderr,
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
193 "# %s.pyc has bad mtime\n",
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
194 name);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
195 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
196 else {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
197 fclose(fp);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
198 fp = fpc;
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
199 if (verbose)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
200 fprintf(stderr,
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
201 "# %s.pyc matches %s.py\n",
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
202 name, name);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
203 goto use_compiled;
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
204 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
205 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
206 fclose(fpc);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
207 }
1415
06570429f062 * import.c (get_module): pass .py filename to parse_file, not .pyc filename!
Guido van Rossum <guido@python.org>
parents: 1410
diff changeset
208 namebuf[len] = '\0';
1410
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
209 err = parse_file(fp, namebuf, file_input, &n);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
210 if (err != E_DONE) {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
211 err_input(err);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
212 return NULL;
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
213 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
214 co = compile(n, namebuf);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
215 freetree(n);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
216 if (co == NULL)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
217 return NULL;
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
218 if (verbose)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
219 fprintf(stderr,
1415
06570429f062 * import.c (get_module): pass .py filename to parse_file, not .pyc filename!
Guido van Rossum <guido@python.org>
parents: 1410
diff changeset
220 "import %s # from %s\n", name, namebuf);
1410
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
221 /* Now write the code object to the ".pyc" file */
1415
06570429f062 * import.c (get_module): pass .py filename to parse_file, not .pyc filename!
Guido van Rossum <guido@python.org>
parents: 1410
diff changeset
222 strcpy(namebuf + len, "c");
1410
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
223 fpc = fopen(namebuf, "wb");
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
224 if (fpc == NULL) {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
225 if (verbose)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
226 fprintf(stderr,
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
227 "# can't create %s\n", namebuf);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
228 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
229 else {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
230 wr_long(MAGIC, fpc);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
231 /* First write a 0 for mtime */
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
232 wr_long(0L, fpc);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
233 wr_object((object *)co, fpc);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
234 if (ferror(fpc)) {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
235 if (verbose)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
236 fprintf(stderr,
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
237 "# can't write %s\n", namebuf);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
238 /* Don't keep partial file */
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
239 fclose(fpc);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
240 (void) unlink(namebuf);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
241 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
242 else {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
243 /* Now write the true mtime */
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
244 fseek(fpc, 4L, 0);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
245 wr_long(mtime, fpc);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
246 fflush(fpc);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
247 fclose(fpc);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
248 if (verbose)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
249 fprintf(stderr,
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
250 "# wrote %s\n", namebuf);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
251 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
252 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
253 break;
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
254
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
255 case PY_COMPILED:
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
256 if (verbose)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
257 fprintf(stderr, "# %s.pyc without %s.py\n",
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
258 name, name);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
259 magic = rd_long(fp);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
260 if (magic != MAGIC) {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
261 err_setstr(ImportError,
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
262 "Bad magic number in .pyc file");
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
263 return NULL;
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
264 }
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
265 (void) rd_long(fp);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
266 use_compiled:
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
267 v = rd_object(fp);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
268 fclose(fp);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
269 if (v == NULL || !is_codeobject(v)) {
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
270 XDECREF(v);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
271 err_setstr(ImportError,
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
272 "Bad code object in .pyc file");
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
parents: 1362
diff changeset
273 return NULL;
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diff changeset
274 }
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diff changeset
275 co = (codeobject *)v;
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diff changeset
276 if (verbose)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
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diff changeset
277 fprintf(stderr,
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
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diff changeset
278 "import %s # precompiled from %s\n",
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diff changeset
279 name, namebuf);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
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diff changeset
280 break;
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diff changeset
281
609
0ad5b35e3ad8 Support for dynamic loading added.
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diff changeset
282 #ifdef USE_DL
1410
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diff changeset
283 case C_EXTENSION:
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diff changeset
284 {
1351
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
285 char funcname[258];
e149c77d173c Makefile, import.c: Lance's alternative module search (allow .pyc file
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diff changeset
286 dl_funcptr p;
1410
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diff changeset
287 fclose(fp);
1351
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diff changeset
288 sprintf(funcname, "init%s", name);
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diff changeset
289 #ifdef SUN_SHLIB
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diff changeset
290 {
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diff changeset
291 void *handle = dlopen (namebuf, 1);
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diff changeset
292 p = (dl_funcptr) dlsym(handle, funcname);
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293 }
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diff changeset
294 #else
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295 p = dl_loadmod(argv0, namebuf, funcname);
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296 #endif /* SUN_SHLIB */
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297 if (p == NULL) {
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diff changeset
298 err_setstr(ImportError,
1353
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diff changeset
299 "dynamic module does not define init function");
a6355c83578d * stdwinmodule.c (stdwin_done): interface to shutdown stdwin (now this is
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diff changeset
300 return NULL;
1351
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diff changeset
301 } else {
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diff changeset
302 (*p)();
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diff changeset
303 *m_ret = m = dictlookup(modules, name);
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diff changeset
304 if (m == NULL) {
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diff changeset
305 err_setstr(SystemError,
1353
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diff changeset
306 "dynamic module not initialized properly");
1351
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diff changeset
307 return NULL;
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diff changeset
308 } else {
1410
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diff changeset
309 if (verbose)
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diff changeset
310 fprintf(stderr,
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
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diff changeset
311 "import %s # dynamically loaded from %s\n",
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diff changeset
312 name, namebuf);
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diff changeset
313 INCREF(None);
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diff changeset
314 return None;
609
0ad5b35e3ad8 Support for dynamic loading added.
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diff changeset
315 }
0ad5b35e3ad8 Support for dynamic loading added.
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diff changeset
316 }
1410
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diff changeset
317 break;
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diff changeset
318 }
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diff changeset
319 #endif /* USE_DL */
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diff changeset
320
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
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diff changeset
321 default:
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diff changeset
322 fclose(fp);
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diff changeset
323 err_setstr(SystemError,
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
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diff changeset
324 "search loop returned unexpected result");
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
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diff changeset
325 return NULL;
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diff changeset
326
1351
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327 }
1410
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328
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
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diff changeset
329 /* We get here for either PY_SOURCE or PY_COMPILED */
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330 if (m == NULL) {
a6934380c6e7 "Compiling" version
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diff changeset
331 m = add_module(name);
a6934380c6e7 "Compiling" version
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diff changeset
332 if (m == NULL) {
a6934380c6e7 "Compiling" version
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diff changeset
333 freetree(n);
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diff changeset
334 return NULL;
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diff changeset
335 }
a6934380c6e7 "Compiling" version
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diff changeset
336 *m_ret = m;
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diff changeset
337 }
a6934380c6e7 "Compiling" version
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diff changeset
338 d = getmoduledict(m);
1293
ac3c80abbf43 * classobject.c: in instance_getattr, don't make a method out of a
Guido van Rossum <guido@python.org>
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diff changeset
339 v = eval_code(co, d, d, d, (object *)NULL);
263
28f0ffd9facf Support ".pyc" files: cached compilation results.
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diff changeset
340 DECREF(co);
28f0ffd9facf Support ".pyc" files: cached compilation results.
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diff changeset
341 return v;
86
a6934380c6e7 "Compiling" version
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diff changeset
342 }
a6934380c6e7 "Compiling" version
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diff changeset
343
a6934380c6e7 "Compiling" version
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diff changeset
344 static object *
a6934380c6e7 "Compiling" version
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diff changeset
345 load_module(name)
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diff changeset
346 char *name;
a6934380c6e7 "Compiling" version
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diff changeset
347 {
a6934380c6e7 "Compiling" version
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diff changeset
348 object *m, *v;
a6934380c6e7 "Compiling" version
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diff changeset
349 v = get_module((object *)NULL, name, &m);
a6934380c6e7 "Compiling" version
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diff changeset
350 if (v == NULL)
6
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
351 return NULL;
86
a6934380c6e7 "Compiling" version
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diff changeset
352 DECREF(v);
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
353 return m;
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
354 }
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
355
fc6fcd7df4f7 Initial revision
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diff changeset
356 object *
86
a6934380c6e7 "Compiling" version
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diff changeset
357 import_module(name)
6
fc6fcd7df4f7 Initial revision
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diff changeset
358 char *name;
fc6fcd7df4f7 Initial revision
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parents:
diff changeset
359 {
fc6fcd7df4f7 Initial revision
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diff changeset
360 object *m;
1270
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
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diff changeset
361 int n;
141
bf5a8539d8ba Call the init function of a built-in module here.
Guido van Rossum <guido@python.org>
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diff changeset
362 if ((m = dictlookup(modules, name)) == NULL) {
1270
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
363 if ((n = init_builtin(name)) || (n = init_frozen(name))) {
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
parents: 1262
diff changeset
364 if (n < 0)
14369a5e6167 Support for frozen scripts; added -i option.
Guido van Rossum <guido@python.org>
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diff changeset
365 return NULL;
141
bf5a8539d8ba Call the init function of a built-in module here.
Guido van Rossum <guido@python.org>
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diff changeset
366 if ((m = dictlookup(modules, name)) == NULL)
727
9a754486ef0b Print messages about where from modules are imported when -v is given.
Guido van Rossum <guido@python.org>
parents: 675
diff changeset
367 err_setstr(SystemError,
9a754486ef0b Print messages about where from modules are imported when -v is given.
Guido van Rossum <guido@python.org>
parents: 675
diff changeset
368 "builtin module missing");
141
bf5a8539d8ba Call the init function of a built-in module here.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
369 }
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
370 else {
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
371 m = load_module(name);
bf5a8539d8ba Call the init function of a built-in module here.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
372 }
bf5a8539d8ba Call the init function of a built-in module here.
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diff changeset
373 }
6
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
374 return m;
fc6fcd7df4f7 Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
375 }
40
f28ac7f621c7 Added reload() functionality.
Guido van Rossum <guido@python.org>
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diff changeset
376
f28ac7f621c7 Added reload() functionality.
Guido van Rossum <guido@python.org>
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diff changeset
377 object *
86
a6934380c6e7 "Compiling" version
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diff changeset
378 reload_module(m)
40
f28ac7f621c7 Added reload() functionality.
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diff changeset
379 object *m;
f28ac7f621c7 Added reload() functionality.
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diff changeset
380 {
1410
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
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diff changeset
381 char *name;
40
f28ac7f621c7 Added reload() functionality.
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diff changeset
382 if (m == NULL || !is_moduleobject(m)) {
86
a6934380c6e7 "Compiling" version
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diff changeset
383 err_setstr(TypeError, "reload() argument must be module");
40
f28ac7f621c7 Added reload() functionality.
Guido van Rossum <guido@python.org>
parents: 6
diff changeset
384 return NULL;
f28ac7f621c7 Added reload() functionality.
Guido van Rossum <guido@python.org>
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diff changeset
385 }
1410
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
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diff changeset
386 name = getmodulename(m);
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
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diff changeset
387 if (name == NULL)
315272ec4d5b * import.c (get_module): total rewrite, to ensure proper search order: for
Guido van Rossum <guido@python.org>
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diff changeset
388 return NULL;
86
a6934380c6e7 "Compiling" version
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diff changeset
389 /* XXX Ought to check for builtin modules -- can't reload these... */
1410
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diff changeset
390 return get_module(m, name, (object **)NULL);
86
a6934380c6e7 "Compiling" version
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diff changeset
391 }
a6934380c6e7 "Compiling" version
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diff changeset
392
a6934380c6e7 "Compiling" version
Guido van Rossum <guido@python.org>
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diff changeset
393 void
a6934380c6e7 "Compiling" version
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diff changeset
394 doneimport()
a6934380c6e7 "Compiling" version
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diff changeset
395 {
a6934380c6e7 "Compiling" version
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diff changeset
396 if (modules != NULL) {
1288
9fed5726a36d Several changes in one:
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diff changeset
397 int pos;
9fed5726a36d Several changes in one:
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diff changeset
398 object *modname, *module;
86
a6934380c6e7 "Compiling" version
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diff changeset
399 /* Explicitly erase all modules; this is the safest way
a6934380c6e7 "Compiling" version
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diff changeset
400 to get rid of at least *some* circular dependencies */
1288
9fed5726a36d Several changes in one:
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diff changeset
401 pos = 0;
9fed5726a36d Several changes in one:
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diff changeset
402 while (mappinggetnext(modules, &pos, &modname, &module)) {
9fed5726a36d Several changes in one:
Guido van Rossum <guido@python.org>
parents: 1270
diff changeset
403 if (is_moduleobject(module)) {
9fed5726a36d Several changes in one:
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diff changeset
404 object *dict;
9fed5726a36d Several changes in one:
Guido van Rossum <guido@python.org>
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diff changeset
405 dict = getmoduledict(module);
9fed5726a36d Several changes in one:
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diff changeset
406 if (dict != NULL && is_dictobject(dict))
9fed5726a36d Several changes in one:
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diff changeset
407 mappingclear(dict);
86
a6934380c6e7 "Compiling" version
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diff changeset
408 }
a6934380c6e7 "Compiling" version
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diff changeset
409 }
1288
9fed5726a36d Several changes in one:
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diff changeset
410 mappingclear(modules);
86
a6934380c6e7 "Compiling" version
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diff changeset
411 }
a6934380c6e7 "Compiling" version
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diff changeset
412 DECREF(modules);
1288
9fed5726a36d Several changes in one:
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diff changeset
413 modules = NULL;
86
a6934380c6e7 "Compiling" version
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diff changeset
414 }
141
bf5a8539d8ba Call the init function of a built-in module here.
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parents: 86
diff changeset
415
bf5a8539d8ba Call the init function of a built-in module here.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
416
bf5a8539d8ba Call the init function of a built-in module here.
Guido van Rossum <guido@python.org>
parents: 86
diff changeset
417 /* Initialize built-in modules when first imported */
bf5a8539d8ba Call the init function of a built-in module here.
Guido van Rossum <guido@python.org>
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diff changeset
418
bf5a8539d8ba Call the init function of a built-in module here.
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419 static int
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420 init_builtin(name)
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421 char *name;
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422 {
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423 int i;
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424 for (i = 0; inittab[i].name != NULL; i++) {
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425 if (strcmp(name, inittab[i].name) == 0) {
727
9a754486ef0b Print messages about where from modules are imported when -v is given.
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426 if (verbose)
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427 fprintf(stderr, "import %s # builtin\n",
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428 name);
141
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429 (*inittab[i].initfunc)();
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430 return 1;
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431 }
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432 }
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433 return 0;
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434 }
1270
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435
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436 extern struct frozen {
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437 char *name;
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438 char *code;
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439 int size;
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440 } frozen_modules[];
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441
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442 int
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443 init_frozen(name)
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444 char *name;
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445 {
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446 struct frozen *p;
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447 codeobject *co;
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448 object *m, *d, *v;
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449 for (p = frozen_modules; ; p++) {
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450 if (p->name == NULL)
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451 return 0;
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452 if (strcmp(p->name, name) == 0)
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453 break;
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454 }
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455 if (verbose)
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456 fprintf(stderr, "import %s # frozen\n", name);
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457 co = (codeobject *) rds_object(p->code, p->size);
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458 if (co == NULL)
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459 return -1;
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460 if ((m = add_module(name)) == NULL ||
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461 (d = getmoduledict(m)) == NULL ||
1293
ac3c80abbf43 * classobject.c: in instance_getattr, don't make a method out of a
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462 (v = eval_code(co, d, d, d, (object*)NULL)) == NULL) {
1270
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463 DECREF(co);
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464 return -1;
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465 }
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466 DECREF(co);
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467 DECREF(v);
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468 return 1;
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469 }