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determinise: use queue, improve api

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- Use a queue rather than always building the full vector of state
   sets.
 - Make more use of move, emplace, reserve.
 - Write directly into dstates argument.
 - Return bool rather than int.
This commit is contained in:
Justin Viiret
2017-05-11 17:07:26 +10:00
committed by Matthew Barr
parent 64db576b9e
commit 31141dd35b
5 changed files with 48 additions and 44 deletions
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5
src/nfagraph/ng_mcclellan.cpp
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@@ -433,6 +433,7 @@ public:
}
return allExternalReports(*rm, test_reports);
}
private:
const ReportManager *rm;
public:
@@ -568,7 +569,7 @@ unique_ptr<raw_dfa> buildMcClellan(const NGHolder &graph,
/* Fast path. Automaton_Graph uses a bitfield internally to represent
* states and is quicker than Automaton_Big. */
Automaton_Graph n(rm, graph, single_trigger, triggers, prunable);
if (determinise(n, rdfa->states, state_limit)) {
if (!determinise(n, rdfa->states, state_limit)) {
DEBUG_PRINTF("state limit exceeded\n");
return nullptr; /* over state limit */
}
@@ -580,7 +581,7 @@ unique_ptr<raw_dfa> buildMcClellan(const NGHolder &graph,
} else {
/* Slow path. Too many states to use Automaton_Graph. */
Automaton_Big n(rm, graph, single_trigger, triggers, prunable);
if (determinise(n, rdfa->states, state_limit)) {
if (!determinise(n, rdfa->states, state_limit)) {
DEBUG_PRINTF("state limit exceeded\n");
return nullptr; /* over state limit */
}