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violet: don't bother swapping holders if unable to trim graph

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Alex Coyte 2017-08-08 11:24:52 +10:00 committed by Matthew Barr
parent 34ed4a6991
commit 72973ccb47
1 changed files with 5 additions and 0 deletions
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5
src/nfagraph/ng_violet.cpp
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@ -1713,6 +1713,11 @@ void removeRedundantLiteralsFromInfix(const NGHolder &h, RoseInGraph &ig,
continue; continue;
} }
if (!delay) {
/* unable to trim graph --> no point swapping to new holder */
continue;
}
assert(isCorrectlyTopped(*h_new)); assert(isCorrectlyTopped(*h_new));
graphs[right] = make_pair(h_new, delay); graphs[right] = make_pair(h_new, delay);
} }