Staging
v0.5.1
v0.5.1
Revision 0c0cfad5fbe1adf3a682a8803a99db35c6761d57 authored by Nick Coghlan on 18 October 2009, 11:16:19 UTC, committed by Nick Coghlan on 18 October 2009, 11:16:19 UTC
........ r75453 | nick.coghlan | 2009-10-17 16:33:05 +1000 (Sat, 17 Oct 2009) | 1 line Correctly restore sys.stdout in test_descr ........ r75456 | nick.coghlan | 2009-10-17 17:30:40 +1000 (Sat, 17 Oct 2009) | 1 line Enhancement to the new environment checking code to print the changed items under -vv. Also includes a small tweak to allow underscores in the names of resources. ........ r75457 | nick.coghlan | 2009-10-17 17:34:27 +1000 (Sat, 17 Oct 2009) | 1 line Formatting tweak so that before and after values are vertically aligned ........ r75458 | nick.coghlan | 2009-10-17 18:21:21 +1000 (Sat, 17 Oct 2009) | 1 line Check and revert expected sys.path alterations ........ r75461 | nick.coghlan | 2009-10-18 00:40:54 +1000 (Sun, 18 Oct 2009) | 1 line Restore original sys.path when running TTK tests ........ r75462 | nick.coghlan | 2009-10-18 01:09:41 +1000 (Sun, 18 Oct 2009) | 1 line Don't invoke reload(sys) and use StringIO objects instead of real files to capture stdin and stdout when needed (ensures all sys attributes remain unmodified after test_xmlrpc runs) ........ r75463 | nick.coghlan | 2009-10-18 01:23:08 +1000 (Sun, 18 Oct 2009) | 1 line Revert changes made to environment in test_httpservers ........ r75465 | nick.coghlan | 2009-10-18 01:45:52 +1000 (Sun, 18 Oct 2009) | 1 line Move restoration of the os.environ object into the context manager where it belongs ........ r75466 | nick.coghlan | 2009-10-18 01:48:16 +1000 (Sun, 18 Oct 2009) | 1 line Also check and restore identity of sys.path, sys.argv and os.environ rather than just their values (this picked up a few more misbehaving tests) ........ r75467 | nick.coghlan | 2009-10-18 01:57:42 +1000 (Sun, 18 Oct 2009) | 1 line Avoid replacing existing modules and sys.path in import tests ........ r75468 | nick.coghlan | 2009-10-18 02:19:51 +1000 (Sun, 18 Oct 2009) | 1 line Don't replace sys.path in test_site ........ r75481 | nick.coghlan | 2009-10-18 15:38:48 +1000 (Sun, 18 Oct 2009) | 1 line Using CleanImport to revert a reload of the os module doesn't work due to function registrations in copy_reg. The perils of reloading modules even for tests... ........ r75486 | nick.coghlan | 2009-10-18 20:29:10 +1000 (Sun, 18 Oct 2009) | 1 line Silence a deprecation warning by using the appropriate replacement construct ........ r75489 | nick.coghlan | 2009-10-18 20:56:21 +1000 (Sun, 18 Oct 2009) | 1 line Restore sys.path in test_tk ........
1 parent c1bde6e
firstsets.c
/* Computation of FIRST stets */
#include "pgenheaders.h"
#include "grammar.h"
#include "token.h"
extern int Py_DebugFlag;
/* Forward */
static void calcfirstset(grammar *, dfa *);
void
addfirstsets(grammar *g)
{
int i;
dfa *d;
if (Py_DebugFlag)
printf("Adding FIRST sets ...\n");
for (i = 0; i < g->g_ndfas; i++) {
d = &g->g_dfa[i];
if (d->d_first == NULL)
calcfirstset(g, d);
}
}
static void
calcfirstset(grammar *g, dfa *d)
{
int i, j;
state *s;
arc *a;
int nsyms;
int *sym;
int nbits;
static bitset dummy;
bitset result;
int type;
dfa *d1;
label *l0;
if (Py_DebugFlag)
printf("Calculate FIRST set for '%s'\n", d->d_name);
if (dummy == NULL)
dummy = newbitset(1);
if (d->d_first == dummy) {
fprintf(stderr, "Left-recursion for '%s'\n", d->d_name);
return;
}
if (d->d_first != NULL) {
fprintf(stderr, "Re-calculating FIRST set for '%s' ???\n",
d->d_name);
}
d->d_first = dummy;
l0 = g->g_ll.ll_label;
nbits = g->g_ll.ll_nlabels;
result = newbitset(nbits);
sym = (int *)PyObject_MALLOC(sizeof(int));
if (sym == NULL)
Py_FatalError("no mem for new sym in calcfirstset");
nsyms = 1;
sym[0] = findlabel(&g->g_ll, d->d_type, (char *)NULL);
s = &d->d_state[d->d_initial];
for (i = 0; i < s->s_narcs; i++) {
a = &s->s_arc[i];
for (j = 0; j < nsyms; j++) {
if (sym[j] == a->a_lbl)
break;
}
if (j >= nsyms) { /* New label */
sym = (int *)PyObject_REALLOC(sym,
sizeof(int) * (nsyms + 1));
if (sym == NULL)
Py_FatalError(
"no mem to resize sym in calcfirstset");
sym[nsyms++] = a->a_lbl;
type = l0[a->a_lbl].lb_type;
if (ISNONTERMINAL(type)) {
d1 = PyGrammar_FindDFA(g, type);
if (d1->d_first == dummy) {
fprintf(stderr,
"Left-recursion below '%s'\n",
d->d_name);
}
else {
if (d1->d_first == NULL)
calcfirstset(g, d1);
mergebitset(result,
d1->d_first, nbits);
}
}
else if (ISTERMINAL(type)) {
addbit(result, a->a_lbl);
}
}
}
d->d_first = result;
if (Py_DebugFlag) {
printf("FIRST set for '%s': {", d->d_name);
for (i = 0; i < nbits; i++) {
if (testbit(result, i))
printf(" %s", PyGrammar_LabelRepr(&l0[i]));
}
printf(" }\n");
}
PyObject_FREE(sym);
}
Computing file changes ...
