bool RewriteMatchingLoop()
{
if (expr is QuantifierExpr)
{
QuantifierExpr quantifier = (QuantifierExpr)expr;
var l = new List <QuantifierWithTriggers>();
List <Expression> splits = new List <Expression>();
bool rewritten = false;
foreach (var q in quantifiers)
{
if (TriggerUtils.NeedsAutoTriggers(q.quantifier) && TriggerUtils.WantsMatchingLoopRewrite(q.quantifier))
{
var matchingLoopRewriter = new MatchingLoopRewriter();
var qq = matchingLoopRewriter.RewriteMatchingLoops(q);
splits.Add(qq);
l.Add(new QuantifierWithTriggers(qq));
rewritten = true;
}
else
{
// don't rewrite the quantifier if we are not auto generate triggers.
// This is because rewriting introduces new boundvars and will cause
// user provided triggers not mention all boundvars
splits.Add(q.quantifier);
l.Add(q);
}
}
if (rewritten)
{
quantifier.SplitQuantifier = splits;
quantifiers = l;
return(true);
}
}
return(false);
}