Repository navigation
Expand file tree
/
Copy pathpythonrun.c
More file actions
1276 lines (1106 loc) · 27.9 KB
/
Copy pathpythonrun.c
File metadata and controls
1276 lines (1106 loc) · 27.9 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* Python interpreter top-level routines, including init/exit */
#include "Python.h"
#include "grammar.h"
#include "node.h"
#include "token.h"
#include "parsetok.h"
#include "errcode.h"
#include "compile.h"
#include "eval.h"
#include "marshal.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#ifdef MS_WIN32
#undef BYTE
#include "windows.h"
#endif
#ifdef macintosh
#include "macglue.h"
#endif
extern char *Py_GetPath(void);
extern grammar _PyParser_Grammar; /* From graminit.c */
/* Forward */
static void initmain(void);
static void initsite(void);
static PyObject *run_err_node(node *n, char *filename,
PyObject *globals, PyObject *locals);
static PyObject *run_node(node *n, char *filename,
PyObject *globals, PyObject *locals);
static PyObject *run_pyc_file(FILE *fp, char *filename,
PyObject *globals, PyObject *locals);
static void err_input(perrdetail *);
static void initsigs(void);
static void call_sys_exitfunc(void);
static void call_ll_exitfuncs(void);
#ifdef Py_TRACE_REFS
int _Py_AskYesNo(char *prompt);
#endif
extern void _PyUnicode_Init(void);
extern void _PyUnicode_Fini(void);
extern void _PyCodecRegistry_Init(void);
extern void _PyCodecRegistry_Fini(void);
int Py_DebugFlag; /* Needed by parser.c */
int Py_VerboseFlag; /* Needed by import.c */
int Py_InteractiveFlag; /* Needed by Py_FdIsInteractive() below */
int Py_NoSiteFlag; /* Suppress 'import site' */
int Py_UseClassExceptionsFlag = 1; /* Needed by bltinmodule.c: deprecated */
int Py_FrozenFlag; /* Needed by getpath.c */
int Py_UnicodeFlag = 0; /* Needed by compile.c */
static int initialized = 0;
/* API to access the initialized flag -- useful for esoteric use */
int
Py_IsInitialized(void)
{
return initialized;
}
/* Global initializations. Can be undone by Py_Finalize(). Don't
call this twice without an intervening Py_Finalize() call. When
initializations fail, a fatal error is issued and the function does
not return. On return, the first thread and interpreter state have
been created.
Locking: you must hold the interpreter lock while calling this.
(If the lock has not yet been initialized, that's equivalent to
having the lock, but you cannot use multiple threads.)
*/
void
Py_Initialize(void)
{
PyInterpreterState *interp;
PyThreadState *tstate;
PyObject *bimod, *sysmod;
char *p;
if (initialized)
return;
initialized = 1;
if ((p = getenv("PYTHONDEBUG")) && *p != '\0')
Py_DebugFlag = Py_DebugFlag ? Py_DebugFlag : 1;
if ((p = getenv("PYTHONVERBOSE")) && *p != '\0')
Py_VerboseFlag = Py_VerboseFlag ? Py_VerboseFlag : 1;
if ((p = getenv("PYTHONOPTIMIZE")) && *p != '\0')
Py_OptimizeFlag = Py_OptimizeFlag ? Py_OptimizeFlag : 1;
interp = PyInterpreterState_New();
if (interp == NULL)
Py_FatalError("Py_Initialize: can't make first interpreter");
tstate = PyThreadState_New(interp);
if (tstate == NULL)
Py_FatalError("Py_Initialize: can't make first thread");
(void) PyThreadState_Swap(tstate);
interp->modules = PyDict_New();
if (interp->modules == NULL)
Py_FatalError("Py_Initialize: can't make modules dictionary");
/* Init codec registry */
_PyCodecRegistry_Init();
/* Init Unicode implementation; relies on the codec registry */
_PyUnicode_Init();
_PyCompareState_Key = PyString_InternFromString("cmp_state");
bimod = _PyBuiltin_Init();
if (bimod == NULL)
Py_FatalError("Py_Initialize: can't initialize __builtin__");
interp->builtins = PyModule_GetDict(bimod);
Py_INCREF(interp->builtins);
sysmod = _PySys_Init();
if (sysmod == NULL)
Py_FatalError("Py_Initialize: can't initialize sys");
interp->sysdict = PyModule_GetDict(sysmod);
Py_INCREF(interp->sysdict);
_PyImport_FixupExtension("sys", "sys");
PySys_SetPath(Py_GetPath());
PyDict_SetItemString(interp->sysdict, "modules",
interp->modules);
_PyImport_Init();
/* initialize builtin exceptions */
init_exceptions();
/* phase 2 of builtins */
_PyImport_FixupExtension("__builtin__", "__builtin__");
initsigs(); /* Signal handling stuff, including initintr() */
initmain(); /* Module __main__ */
if (!Py_NoSiteFlag)
initsite(); /* Module site */
}
#ifdef COUNT_ALLOCS
extern void dump_counts(void);
#endif
/* Undo the effect of Py_Initialize().
Beware: if multiple interpreter and/or thread states exist, these
are not wiped out; only the current thread and interpreter state
are deleted. But since everything else is deleted, those other
interpreter and thread states should no longer be used.
(XXX We should do better, e.g. wipe out all interpreters and
threads.)
Locking: as above.
*/
void
Py_Finalize(void)
{
PyInterpreterState *interp;
PyThreadState *tstate;
if (!initialized)
return;
initialized = 0;
call_sys_exitfunc();
/* Get current thread state and interpreter pointer */
tstate = PyThreadState_Get();
interp = tstate->interp;
/* Disable signal handling */
PyOS_FiniInterrupts();
/* Cleanup Unicode implementation */
_PyUnicode_Fini();
/* Cleanup Codec registry */
_PyCodecRegistry_Fini();
/* Destroy all modules */
PyImport_Cleanup();
/* Destroy the database used by _PyImport_{Fixup,Find}Extension */
_PyImport_Fini();
/* Debugging stuff */
#ifdef COUNT_ALLOCS
dump_counts();
#endif
#ifdef Py_REF_DEBUG
fprintf(stderr, "[%ld refs]\n", _Py_RefTotal);
#endif
#ifdef Py_TRACE_REFS
if (
#ifdef MS_WINDOWS /* Only ask on Windows if env var set */
getenv("PYTHONDUMPREFS") &&
#endif /* MS_WINDOWS */
_Py_AskYesNo("Print left references?")) {
_Py_PrintReferences(stderr);
}
#endif /* Py_TRACE_REFS */
/* Now we decref the exception classes. After this point nothing
can raise an exception. That's okay, because each Fini() method
below has been checked to make sure no exceptions are ever
raised.
*/
fini_exceptions();
/* Delete current thread */
PyInterpreterState_Clear(interp);
PyThreadState_Swap(NULL);
PyInterpreterState_Delete(interp);
PyMethod_Fini();
PyFrame_Fini();
PyCFunction_Fini();
PyTuple_Fini();
PyString_Fini();
PyInt_Fini();
PyFloat_Fini();
/* XXX Still allocated:
- various static ad-hoc pointers to interned strings
- int and float free list blocks
- whatever various modules and libraries allocate
*/
PyGrammar_RemoveAccelerators(&_PyParser_Grammar);
call_ll_exitfuncs();
#ifdef Py_TRACE_REFS
_Py_ResetReferences();
#endif /* Py_TRACE_REFS */
}
/* Create and initialize a new interpreter and thread, and return the
new thread. This requires that Py_Initialize() has been called
first.
Unsuccessful initialization yields a NULL pointer. Note that *no*
exception information is available even in this case -- the
exception information is held in the thread, and there is no
thread.
Locking: as above.
*/
PyThreadState *
Py_NewInterpreter(void)
{
PyInterpreterState *interp;
PyThreadState *tstate, *save_tstate;
PyObject *bimod, *sysmod;
if (!initialized)
Py_FatalError("Py_NewInterpreter: call Py_Initialize first");
interp = PyInterpreterState_New();
if (interp == NULL)
return NULL;
tstate = PyThreadState_New(interp);
if (tstate == NULL) {
PyInterpreterState_Delete(interp);
return NULL;
}
save_tstate = PyThreadState_Swap(tstate);
/* XXX The following is lax in error checking */
interp->modules = PyDict_New();
bimod = _PyImport_FindExtension("__builtin__", "__builtin__");
if (bimod != NULL) {
interp->builtins = PyModule_GetDict(bimod);
Py_INCREF(interp->builtins);
}
sysmod = _PyImport_FindExtension("sys", "sys");
if (bimod != NULL && sysmod != NULL) {
interp->sysdict = PyModule_GetDict(sysmod);
Py_INCREF(interp->sysdict);
PySys_SetPath(Py_GetPath());
PyDict_SetItemString(interp->sysdict, "modules",
interp->modules);
initmain();
if (!Py_NoSiteFlag)
initsite();
}
if (!PyErr_Occurred())
return tstate;
/* Oops, it didn't work. Undo it all. */
PyErr_Print();
PyThreadState_Clear(tstate);
PyThreadState_Swap(save_tstate);
PyThreadState_Delete(tstate);
PyInterpreterState_Delete(interp);
return NULL;
}
/* Delete an interpreter and its last thread. This requires that the
given thread state is current, that the thread has no remaining
frames, and that it is its interpreter's only remaining thread.
It is a fatal error to violate these constraints.
(Py_Finalize() doesn't have these constraints -- it zaps
everything, regardless.)
Locking: as above.
*/
void
Py_EndInterpreter(PyThreadState *tstate)
{
PyInterpreterState *interp = tstate->interp;
if (tstate != PyThreadState_Get())
Py_FatalError("Py_EndInterpreter: thread is not current");
if (tstate->frame != NULL)
Py_FatalError("Py_EndInterpreter: thread still has a frame");
if (tstate != interp->tstate_head || tstate->next != NULL)
Py_FatalError("Py_EndInterpreter: not the last thread");
PyImport_Cleanup();
PyInterpreterState_Clear(interp);
PyThreadState_Swap(NULL);
PyInterpreterState_Delete(interp);
}
static char *progname = "python";
void
Py_SetProgramName(char *pn)
{
if (pn && *pn)
progname = pn;
}
char *
Py_GetProgramName(void)
{
return progname;
}
static char *default_home = NULL;
void
Py_SetPythonHome(char *home)
{
default_home = home;
}
char *
Py_GetPythonHome(void)
{
char *home = default_home;
if (home == NULL)
home = getenv("PYTHONHOME");
return home;
}
/* Create __main__ module */
static void
initmain(void)
{
PyObject *m, *d;
m = PyImport_AddModule("__main__");
if (m == NULL)
Py_FatalError("can't create __main__ module");
d = PyModule_GetDict(m);
if (PyDict_GetItemString(d, "__builtins__") == NULL) {
PyObject *bimod = PyImport_ImportModule("__builtin__");
if (bimod == NULL ||
PyDict_SetItemString(d, "__builtins__", bimod) != 0)
Py_FatalError("can't add __builtins__ to __main__");
Py_DECREF(bimod);
}
}
/* Import the site module (not into __main__ though) */
static void
initsite(void)
{
PyObject *m, *f;
m = PyImport_ImportModule("site");
if (m == NULL) {
f = PySys_GetObject("stderr");
if (Py_VerboseFlag) {
PyFile_WriteString(
"'import site' failed; traceback:\n", f);
PyErr_Print();
}
else {
PyFile_WriteString(
"'import site' failed; use -v for traceback\n", f);
PyErr_Clear();
}
}
else {
Py_DECREF(m);
}
}
/* Parse input from a file and execute it */
int
PyRun_AnyFile(FILE *fp, char *filename)
{
return PyRun_AnyFileEx(fp, filename, 0);
}
int
PyRun_AnyFileEx(FILE *fp, char *filename, int closeit)
{
if (filename == NULL)
filename = "???";
if (Py_FdIsInteractive(fp, filename)) {
int err = PyRun_InteractiveLoop(fp, filename);
if (closeit)
fclose(fp);
return err;
}
else
return PyRun_SimpleFileEx(fp, filename, closeit);
}
int
PyRun_InteractiveLoop(FILE *fp, char *filename)
{
PyObject *v;
int ret;
v = PySys_GetObject("ps1");
if (v == NULL) {
PySys_SetObject("ps1", v = PyString_FromString(">>> "));
Py_XDECREF(v);
}
v = PySys_GetObject("ps2");
if (v == NULL) {
PySys_SetObject("ps2", v = PyString_FromString("... "));
Py_XDECREF(v);
}
for (;;) {
ret = PyRun_InteractiveOne(fp, filename);
#ifdef Py_REF_DEBUG
fprintf(stderr, "[%ld refs]\n", _Py_RefTotal);
#endif
if (ret == E_EOF)
return 0;
/*
if (ret == E_NOMEM)
return -1;
*/
}
}
int
PyRun_InteractiveOne(FILE *fp, char *filename)
{
PyObject *m, *d, *v, *w;
node *n;
perrdetail err;
char *ps1 = "", *ps2 = "";
v = PySys_GetObject("ps1");
if (v != NULL) {
v = PyObject_Str(v);
if (v == NULL)
PyErr_Clear();
else if (PyString_Check(v))
ps1 = PyString_AsString(v);
}
w = PySys_GetObject("ps2");
if (w != NULL) {
w = PyObject_Str(w);
if (w == NULL)
PyErr_Clear();
else if (PyString_Check(w))
ps2 = PyString_AsString(w);
}
n = PyParser_ParseFile(fp, filename, &_PyParser_Grammar,
Py_single_input, ps1, ps2, &err);
Py_XDECREF(v);
Py_XDECREF(w);
if (n == NULL) {
if (err.error == E_EOF) {
if (err.text)
PyMem_DEL(err.text);
return E_EOF;
}
err_input(&err);
PyErr_Print();
return err.error;
}
m = PyImport_AddModule("__main__");
if (m == NULL)
return -1;
d = PyModule_GetDict(m);
v = run_node(n, filename, d, d);
if (v == NULL) {
PyErr_Print();
return -1;
}
Py_DECREF(v);
if (Py_FlushLine())
PyErr_Clear();
return 0;
}
int
PyRun_SimpleFile(FILE *fp, char *filename)
{
return PyRun_SimpleFileEx(fp, filename, 0);
}
/* Check whether a file maybe a pyc file: Look at the extension,
the file type, and, if we may close it, at the first few bytes. */
static int
maybe_pyc_file(FILE *fp, char* filename, char* ext, int closeit)
{
if (strcmp(ext, ".pyc") == 0 || strcmp(ext, ".pyo") == 0)
return 1;
#ifdef macintosh
/* On a mac, we also assume a pyc file for types 'PYC ' and 'APPL' */
if (PyMac_getfiletype(filename) == 'PYC '
|| PyMac_getfiletype(filename) == 'APPL')
return 1;
#endif /* macintosh */
/* Only look into the file if we are allowed to close it, since
it then should also be seekable. */
if (closeit) {
/* Read only two bytes of the magic. If the file was opened in
text mode, the bytes 3 and 4 of the magic (\r\n) might not
be read as they are on disk. */
unsigned int halfmagic = PyImport_GetMagicNumber() & 0xFFFF;
unsigned char buf[2];
if (fread(buf, 1, 2, fp) == 2
&& ((unsigned int)buf[1]<<8 | buf[0]) == halfmagic)
return 1;
fseek(fp, 0, SEEK_SET);
}
return 0;
}
int
PyRun_SimpleFileEx(FILE *fp, char *filename, int closeit)
{
PyObject *m, *d, *v;
char *ext;
m = PyImport_AddModule("__main__");
if (m == NULL)
return -1;
d = PyModule_GetDict(m);
ext = filename + strlen(filename) - 4;
if (maybe_pyc_file(fp, filename, ext, closeit)) {
/* Try to run a pyc file. First, re-open in binary */
if (closeit)
fclose(fp);
if( (fp = fopen(filename, "rb")) == NULL ) {
fprintf(stderr, "python: Can't reopen .pyc file\n");
return -1;
}
/* Turn on optimization if a .pyo file is given */
if (strcmp(ext, ".pyo") == 0)
Py_OptimizeFlag = 1;
v = run_pyc_file(fp, filename, d, d);
} else {
v = PyRun_FileEx(fp, filename, Py_file_input, d, d, closeit);
}
if (v == NULL) {
PyErr_Print();
return -1;
}
Py_DECREF(v);
if (Py_FlushLine())
PyErr_Clear();
return 0;
}
int
PyRun_SimpleString(char *command)
{
PyObject *m, *d, *v;
m = PyImport_AddModule("__main__");
if (m == NULL)
return -1;
d = PyModule_GetDict(m);
v = PyRun_String(command, Py_file_input, d, d);
if (v == NULL) {
PyErr_Print();
return -1;
}
Py_DECREF(v);
if (Py_FlushLine())
PyErr_Clear();
return 0;
}
static int
parse_syntax_error(PyObject *err, PyObject **message, char **filename,
int *lineno, int *offset, char **text)
{
long hold;
PyObject *v;
/* old style errors */
if (PyTuple_Check(err))
return PyArg_Parse(err, "(O(ziiz))", message, filename,
lineno, offset, text);
/* new style errors. `err' is an instance */
if (! (v = PyObject_GetAttrString(err, "msg")))
goto finally;
*message = v;
if (!(v = PyObject_GetAttrString(err, "filename")))
goto finally;
if (v == Py_None)
*filename = NULL;
else if (! (*filename = PyString_AsString(v)))
goto finally;
Py_DECREF(v);
if (!(v = PyObject_GetAttrString(err, "lineno")))
goto finally;
hold = PyInt_AsLong(v);
Py_DECREF(v);
v = NULL;
if (hold < 0 && PyErr_Occurred())
goto finally;
*lineno = (int)hold;
if (!(v = PyObject_GetAttrString(err, "offset")))
goto finally;
hold = PyInt_AsLong(v);
Py_DECREF(v);
v = NULL;
if (hold < 0 && PyErr_Occurred())
goto finally;
*offset = (int)hold;
if (!(v = PyObject_GetAttrString(err, "text")))
goto finally;
if (v == Py_None)
*text = NULL;
else if (! (*text = PyString_AsString(v)))
goto finally;
Py_DECREF(v);
return 1;
finally:
Py_XDECREF(v);
return 0;
}
void
PyErr_Print(void)
{
PyErr_PrintEx(1);
}
void
PyErr_PrintEx(int set_sys_last_vars)
{
int err = 0;
PyObject *exception, *v, *tb, *f;
PyErr_Fetch(&exception, &v, &tb);
PyErr_NormalizeException(&exception, &v, &tb);
if (exception == NULL)
return;
if (PyErr_GivenExceptionMatches(exception, PyExc_SystemExit)) {
if (Py_FlushLine())
PyErr_Clear();
fflush(stdout);
if (v == NULL || v == Py_None)
Py_Exit(0);
if (PyInstance_Check(v)) {
/* we expect the error code to be store in the
`code' attribute
*/
PyObject *code = PyObject_GetAttrString(v, "code");
if (code) {
Py_DECREF(v);
v = code;
if (v == Py_None)
Py_Exit(0);
}
/* if we failed to dig out the "code" attribute,
then just let the else clause below print the
error
*/
}
if (PyInt_Check(v))
Py_Exit((int)PyInt_AsLong(v));
else {
/* OK to use real stderr here */
PyObject_Print(v, stderr, Py_PRINT_RAW);
fprintf(stderr, "\n");
Py_Exit(1);
}
}
if (set_sys_last_vars) {
PySys_SetObject("last_type", exception);
PySys_SetObject("last_value", v);
PySys_SetObject("last_traceback", tb);
}
f = PySys_GetObject("stderr");
if (f == NULL)
fprintf(stderr, "lost sys.stderr\n");
else {
if (Py_FlushLine())
PyErr_Clear();
fflush(stdout);
err = PyTraceBack_Print(tb, f);
if (err == 0 &&
PyErr_GivenExceptionMatches(exception, PyExc_SyntaxError))
{
PyObject *message;
char *filename, *text;
int lineno, offset;
if (!parse_syntax_error(v, &message, &filename,
&lineno, &offset, &text))
PyErr_Clear();
else {
char buf[10];
PyFile_WriteString(" File \"", f);
if (filename == NULL)
PyFile_WriteString("<string>", f);
else
PyFile_WriteString(filename, f);
PyFile_WriteString("\", line ", f);
sprintf(buf, "%d", lineno);
PyFile_WriteString(buf, f);
PyFile_WriteString("\n", f);
if (text != NULL) {
char *nl;
if (offset > 0 &&
offset == (int)strlen(text))
offset--;
for (;;) {
nl = strchr(text, '\n');
if (nl == NULL ||
nl-text >= offset)
break;
offset -= (nl+1-text);
text = nl+1;
}
while (*text == ' ' || *text == '\t') {
text++;
offset--;
}
PyFile_WriteString(" ", f);
PyFile_WriteString(text, f);
if (*text == '\0' ||
text[strlen(text)-1] != '\n')
PyFile_WriteString("\n", f);
PyFile_WriteString(" ", f);
offset--;
while (offset > 0) {
PyFile_WriteString(" ", f);
offset--;
}
PyFile_WriteString("^\n", f);
}
Py_INCREF(message);
Py_DECREF(v);
v = message;
/* Can't be bothered to check all those
PyFile_WriteString() calls */
if (PyErr_Occurred())
err = -1;
}
}
if (err) {
/* Don't do anything else */
}
else if (PyClass_Check(exception)) {
PyClassObject* exc = (PyClassObject*)exception;
PyObject* className = exc->cl_name;
PyObject* moduleName =
PyDict_GetItemString(exc->cl_dict, "__module__");
if (moduleName == NULL)
err = PyFile_WriteString("<unknown>", f);
else {
char* modstr = PyString_AsString(moduleName);
if (modstr && strcmp(modstr, "exceptions"))
{
err = PyFile_WriteString(modstr, f);
err += PyFile_WriteString(".", f);
}
}
if (err == 0) {
if (className == NULL)
err = PyFile_WriteString("<unknown>", f);
else
err = PyFile_WriteObject(className, f,
Py_PRINT_RAW);
}
}
else
err = PyFile_WriteObject(exception, f, Py_PRINT_RAW);
if (err == 0) {
if (v != NULL && v != Py_None) {
PyObject *s = PyObject_Str(v);
/* only print colon if the str() of the
object is not the empty string
*/
if (s == NULL)
err = -1;
else if (!PyString_Check(s) ||
PyString_GET_SIZE(s) != 0)
err = PyFile_WriteString(": ", f);
if (err == 0)
err = PyFile_WriteObject(s, f, Py_PRINT_RAW);
Py_XDECREF(s);
}
}
if (err == 0)
err = PyFile_WriteString("\n", f);
}
Py_XDECREF(exception);
Py_XDECREF(v);
Py_XDECREF(tb);
/* If an error happened here, don't show it.
XXX This is wrong, but too many callers rely on this behavior. */
if (err != 0)
PyErr_Clear();
}
PyObject *
PyRun_String(char *str, int start, PyObject *globals, PyObject *locals)
{
return run_err_node(PyParser_SimpleParseString(str, start),
"<string>", globals, locals);
}
PyObject *
PyRun_File(FILE *fp, char *filename, int start, PyObject *globals,
PyObject *locals)
{
return PyRun_FileEx(fp, filename, start, globals, locals, 0);
}
PyObject *
PyRun_FileEx(FILE *fp, char *filename, int start, PyObject *globals,
PyObject *locals, int closeit)
{
node *n = PyParser_SimpleParseFile(fp, filename, start);
if (closeit)
fclose(fp);
return run_err_node(n, filename, globals, locals);
}
static PyObject *
run_err_node(node *n, char *filename, PyObject *globals, PyObject *locals)
{
if (n == NULL)
return NULL;
return run_node(n, filename, globals, locals);
}
static PyObject *
run_node(node *n, char *filename, PyObject *globals, PyObject *locals)
{
PyCodeObject *co;
PyObject *v;
co = PyNode_Compile(n, filename);
PyNode_Free(n);
if (co == NULL)
return NULL;
v = PyEval_EvalCode(co, globals, locals);
Py_DECREF(co);
return v;
}
static PyObject *
run_pyc_file(FILE *fp, char *filename, PyObject *globals, PyObject *locals)
{
PyCodeObject *co;
PyObject *v;
long magic;
long PyImport_GetMagicNumber(void);
magic = PyMarshal_ReadLongFromFile(fp);
if (magic != PyImport_GetMagicNumber()) {
PyErr_SetString(PyExc_RuntimeError,
"Bad magic number in .pyc file");
return NULL;
}
(void) PyMarshal_ReadLongFromFile(fp);
v = PyMarshal_ReadObjectFromFile(fp);
fclose(fp);
if (v == NULL || !PyCode_Check(v)) {
Py_XDECREF(v);
PyErr_SetString(PyExc_RuntimeError,
"Bad code object in .pyc file");
return NULL;
}
co = (PyCodeObject *)v;
v = PyEval_EvalCode(co, globals, locals);
Py_DECREF(co);
return v;
}
PyObject *
Py_CompileString(char *str, char *filename, int start)
{
node *n;
PyCodeObject *co;
n = PyParser_SimpleParseString(str, start);
if (n == NULL)
return NULL;
co = PyNode_Compile(n, filename);
PyNode_Free(n);
return (PyObject *)co;
}
/* Simplified interface to parsefile -- return node or set exception */
node *
PyParser_SimpleParseFile(FILE *fp, char *filename, int start)
{
node *n;
perrdetail err;
n = PyParser_ParseFile(fp, filename, &_PyParser_Grammar, start,
(char *)0, (char *)0, &err);
if (n == NULL)
err_input(&err);
return n;
}
/* Simplified interface to parsestring -- return node or set exception */
node *
PyParser_SimpleParseString(char *str, int start)
{
node *n;
perrdetail err;
n = PyParser_ParseString(str, &_PyParser_Grammar, start, &err);
if (n == NULL)
err_input(&err);
return n;
}
/* Set the error appropriate to the given input error code (see errcode.h) */
static void
err_input(perrdetail *err)
{
PyObject *v, *w, *errtype;
char *msg = NULL;
errtype = PyExc_SyntaxError;
v = Py_BuildValue("(ziiz)", err->filename,
err->lineno, err->offset, err->text);
if (err->text != NULL) {
PyMem_DEL(err->text);
err->text = NULL;
}
switch (err->error) {