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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include <vespa/searchcommon/attribute/iattributevector.h>
#include <type_traits>
template <typename T> struct IsWeightedType : std::false_type {};
template <typename T> struct IsWeightedType<search::attribute::WeightedType<T>> : std::true_type {};
struct value_then_weight_order {
template <typename T>
bool operator()(const T& lhs, const T& rhs) const noexcept {
if (lhs.getValue() != rhs.getValue()) {
return (lhs.getValue() < rhs.getValue());
}
return (lhs.getWeight() < rhs.getWeight());
}
};
struct order_by_value {
template <typename T>
bool operator()(const T& lhs, const T& rhs) const noexcept {
if constexpr (IsWeightedType<T>::value) {
return (lhs.getValue() < rhs.getValue());
} else {
return (lhs < rhs);
}
}
};
struct order_by_weight {
template <typename T>
bool operator()(const search::attribute::WeightedType<T>& lhs,
const search::attribute::WeightedType<T>& rhs) const noexcept {
return (lhs.getWeight() < rhs.getWeight());
}
};
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