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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/searchlib/common/feature.h>
#include <memory>
namespace search::queryeval {
/**
* Utility used to iterate low-level sorted results (typically owned
* by a HitCollector). The actual results are stored in a backing
* array and the order is defined by a separate index array.
**/
class SortedHitSequence
{
public:
using Hit = std::pair<uint32_t, feature_t>;
using Ref = uint32_t;
private:
const Hit *_data;
const Ref *_pos;
const Ref *_end;
public:
SortedHitSequence(const Hit *hits, const Ref *refs, size_t num_refs)
: _data(hits), _pos(refs), _end(refs + num_refs) {}
bool valid() const { return (_pos != _end); }
const Hit &get() const { return _data[*_pos]; }
void next() { ++_pos; }
};
}
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