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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "dfa_string_comparator.h"
#include <vespa/searchlib/util/foldedstringcompare.h>
namespace search::attribute {
DfaStringComparator::DfaStringComparator(const DataStoreType& data_store, const std::vector<uint32_t>& candidate, bool cased) noexcept
: ParentType(data_store),
_candidate(std::cref(candidate)),
_cased(cased)
{
}
bool
DfaStringComparator::less(const vespalib::datastore::EntryRef lhs, const vespalib::datastore::EntryRef rhs) const noexcept
{
if (lhs.valid()) {
if (rhs.valid()) {
if (_cased) {
return FoldedStringCompare::compareFolded<false, false>(get(lhs), get(rhs)) < 0;
} else {
return FoldedStringCompare::compareFolded<true, true>(get(lhs), get(rhs)) < 0;
}
} else {
if (_cased) {
return FoldedStringCompare::compareFolded<false, false>(get(lhs), _candidate) < 0;
} else {
return FoldedStringCompare::compareFolded<true, false>(get(lhs), _candidate) < 0;
}
}
} else {
if (rhs.valid()) {
if (_cased) {
return FoldedStringCompare::compareFolded<false, false>(_candidate, get(rhs)) < 0;
} else {
return FoldedStringCompare::compareFolded<false, true>(_candidate, get(rhs)) < 0;
}
} else {
return false;
}
}
}
}
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