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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "zcurve.h"
#include <vespa/vespalib/geo/zcurve.h>
using vespalib::Serializer;
using vespalib::Deserializer;
namespace search::expression {
IMPLEMENT_EXPRESSIONNODE(ZCurveFunctionNode, UnaryFunctionNode);
ZCurveFunctionNode::~ZCurveFunctionNode() {}
ZCurveFunctionNode::ZCurveFunctionNode(const ZCurveFunctionNode & rhs) :
UnaryFunctionNode(rhs),
_dim(rhs._dim),
_handler()
{
}
ZCurveFunctionNode & ZCurveFunctionNode::operator = (const ZCurveFunctionNode & rhs)
{
if (this != &rhs) {
UnaryFunctionNode::operator =(rhs);
_dim = rhs._dim;
_handler.reset();
}
return *this;
}
void ZCurveFunctionNode::onPrepareResult()
{
if (getArg().getResult()->inherits(ResultNodeVector::classId)) {
setResultType(std::make_unique<IntegerResultNodeVector>());
_handler = std::make_unique<MultiValueHandler>(*this);
} else {
setResultType(std::make_unique<Int64ResultNode>());
_handler = std::make_unique<SingleValueHandler>(*this);
}
}
int32_t ZCurveFunctionNode::Handler::getXorY(uint64_t z) const
{
int32_t x, y;
vespalib::geo::ZCurve::decode(z, &x, &y);
return (_dim==X) ? x : y;
}
bool ZCurveFunctionNode::onExecute() const
{
getArg().execute();
_handler->handle(*getArg().getResult());
return true;
}
void ZCurveFunctionNode::SingleValueHandler::handle(const ResultNode & arg)
{
handleOne(arg, _result);
}
void ZCurveFunctionNode::MultiValueHandler::handle(const ResultNode & arg)
{
const ResultNodeVector & v(static_cast<const ResultNodeVector &>(arg));
_result.getVector().resize(v.size());
for(size_t i(0), m(_result.getVector().size()); i < m; i++) {
handleOne(v.get(i), _result.getVector()[i]);
}
}
Serializer & ZCurveFunctionNode::onSerialize(Serializer & os) const
{
UnaryFunctionNode::onSerialize(os);
uint8_t code(_dim);
return os << code;
}
Deserializer & ZCurveFunctionNode::onDeserialize(Deserializer & is)
{
UnaryFunctionNode::onDeserialize(is);
uint8_t code(0);
is >> code;
_dim = static_cast<Dimension>(code);
return is;
}
}
// this function was added by ../../forcelink.sh
void forcelink_file_searchlib_expression_zcurve() {}
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