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smwr: more aggressive pruning of overlong paths in NFA

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Alex Coyte 2017-05-01 13:31:09 +10:00 committed by Matthew Barr
parent 725de51f89
commit 29ad557b9c
1 changed files with 4 additions and 3 deletions
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7
src/smallwrite/smallwrite_build.cpp
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@ -198,15 +198,16 @@ static
bool pruneOverlong(NGHolder &g, const depth &max_depth,
const ReportManager &rm) {
bool modified = false;
auto depths = calcDepths(g);
auto depths = calcBidiDepths(g);
for (auto v : vertices_range(g)) {
if (is_special(v, g)) {
continue;
}
const auto &d = depths.at(g[v].index);
depth min_depth = min(d.fromStart.min, d.fromStartDotStar.min);
if (min_depth > max_depth) {
depth min_match_offset = min(d.fromStart.min, d.fromStartDotStar.min)
+ min(d.toAccept.min, d.toAcceptEod.min);
if (min_match_offset > max_depth) {
clear_vertex(v, g);
modified = true;
continue;