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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "expression_replacer.h"
namespace search::features::rankingexpression {
ExpressionReplacer::~ExpressionReplacer()
{
}
//-----------------------------------------------------------------------------
IntrinsicExpression::UP
NullExpressionReplacer::maybe_replace(const vespalib::eval::Function &,
const search::fef::IIndexEnvironment &) const
{
return IntrinsicExpression::UP(nullptr);
}
NullExpressionReplacer::~NullExpressionReplacer()
{
}
//-----------------------------------------------------------------------------
ListExpressionReplacer::ListExpressionReplacer() = default;
void
ListExpressionReplacer::add(ExpressionReplacer::UP replacer)
{
_list.push_back(std::move(replacer));
}
IntrinsicExpression::UP
ListExpressionReplacer::maybe_replace(const vespalib::eval::Function &function,
const search::fef::IIndexEnvironment &env) const
{
for (const auto &item: _list) {
if (auto result = item.get()->maybe_replace(function, env)) {
return result;
}
}
return IntrinsicExpression::UP(nullptr);
}
ListExpressionReplacer::~ListExpressionReplacer()
{
}
} // namespace search::features::rankingexpression
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