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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "termdataextractor.h"
#include "querynodes.h"
#include <vespa/searchlib/query/tree/templatetermvisitor.h>
using search::fef::ITermData;
using search::query::Node;
using search::query::TemplateTermVisitor;
using std::vector;
namespace proton::matching {
namespace {
class TermDataExtractorVisitor
: public TemplateTermVisitor<TermDataExtractorVisitor, ProtonNodeTypes>
{
vector<const ITermData *> &_term_data;
public:
TermDataExtractorVisitor(vector<const ITermData *> &term_data)
: _term_data(term_data) {
}
template <class TermType>
void visitTerm(TermType &n) {
if (n.isRanked()) {
_term_data.push_back(&n);
}
}
virtual void visit(ProtonNodeTypes::AndNot &n) override {
assert(n.getChildren().size() > 0);
n.getChildren()[0]->accept(*this);
}
virtual void visit(ProtonNodeTypes::Equiv &n) override {
// XXX: unranked equiv not supported
_term_data.push_back(&n);
}
};
} // namespace
void TermDataExtractor::extractTerms(const Node &node,
vector<const ITermData *> &term_data) {
TermDataExtractorVisitor visitor(term_data);
// The visitor doesn't deal with const nodes. However, we are
// not changing the node, so we can safely remove the const.
const_cast<Node &>(node).accept(visitor);
}
}
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