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Accelerates epsilon closures #148

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Accelerates epsilon closures #148

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07e4118
Adds strongly-connected component analysis of epsilon edges
sfstewman Apr 7, 2019
78f39fb
Uses strongly connected components to determine epsilon closures
sfstewman Apr 7, 2019
d2fb5e4
Changes how set_closure detects duplicate set entries
sfstewman Apr 19, 2019
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7 changes: 7 additions & 0 deletions include/fsm/options.h
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Original file line number Diff line number Diff line change
Expand Up @@ -53,6 +53,13 @@ struct fsm_options {
*/
unsigned int always_hex:1;

/* use strongly-connected components names instead of state
* names */
unsigned int scc_names:1;

/* use state index names for state names */
unsigned int index_names:1;

/* for generated code, what kind of I/O API to generate */
enum fsm_io io;

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12 changes: 11 additions & 1 deletion src/fsm/main.c
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Expand Up @@ -324,7 +324,7 @@ main(int argc, char *argv[])
{
int c;

while (c = getopt(argc, argv, "h" "acwXe:k:i:" "xpq:l:dmrt:"), c != -1) {
while (c = getopt(argc, argv, "h" "aCcwXe:k:i:" "xpq:l:dmrt:"), c != -1) {
switch (c) {
case 'a': opt.anonymous_states = 1; break;
case 'c': opt.consolidate_edges = 1; break;
Expand All @@ -333,6 +333,8 @@ main(int argc, char *argv[])
case 'e': opt.prefix = optarg; break;
case 'k': opt.io = io(optarg); break;

case 'C': opt.anonymous_states = 0;
opt.scc_names = 1; break;
case 'i':
iterations = strtoul(optarg, NULL, 10);
/* XXX: error handling */
Expand Down Expand Up @@ -534,6 +536,14 @@ main(int argc, char *argv[])
}
}

if (opt.scc_names) {
extern int fsm_label_epsilon_scc(struct fsm *fsm);
if (fsm_label_epsilon_scc(fsm) < 0) {
perror("fsm_label_epsilon_scc");
return EXIT_FAILURE;
}
}

if (print != NULL) {
print(stdout, fsm);
}
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