ClickHouse/dbms/src/Storages/MergeTree/BoolMask.h

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#pragma once
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/// Multiple Boolean values. That is, two Boolean values: can it be true, can it be false.
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struct BoolMask
{
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bool can_be_true = false;
bool can_be_false = false;
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BoolMask() {}
BoolMask(bool can_be_true_, bool can_be_false_) : can_be_true(can_be_true_), can_be_false(can_be_false_) {}
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BoolMask operator &(const BoolMask & m)
{
return BoolMask(can_be_true && m.can_be_true, can_be_false || m.can_be_false);
}
BoolMask operator |(const BoolMask & m)
{
return BoolMask(can_be_true || m.can_be_true, can_be_false && m.can_be_false);
}
BoolMask operator !()
{
return BoolMask(can_be_false, can_be_true);
}
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};