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LR0: Capture state transitions during closure

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This commit is contained in:
Paul Beckingham 2016-01-07 22:22:45 -05:00
parent 67b497733f
commit 227c5ae8e5
1 changed files with 3 additions and 1 deletions
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4
src/LR0.cpp
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@ -135,6 +135,7 @@ void LR0::closeState (States& states, const int state) const
{
Item advanced (item);
advanced.advance ();
advanced.setTransition (state);
closure.push_back (advanced);
if (! advanced.done ())
@ -148,6 +149,7 @@ void LR0::closeState (States& states, const int state) const
{
Item additional (_augmented[r]);
additional.setGrammarRuleIndex (r);
additional.setTransition (state);
closure.push_back (additional);
seen.insert (nextSymbol);
}
@ -290,9 +292,9 @@ LR0::Item::Item (const std::vector <std::string>& rule)
////////////////////////////////////////////////////////////////////////////////
bool LR0::Item::operator== (const Item& other)
{
// Deliberately ignores _transitionsTo.
if (_cursor != other._cursor ||
_grammarRule != other._grammarRule ||
_transitionsTo != other._transitionsTo ||
_rule.size () != other._rule.size ())
return false;