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/**
* Copyright (C) 2017 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects
* for all of the code used other than as permitted herein. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you do not
* wish to do so, delete this exception statement from your version. If you
* delete this exception statement from all source files in the program,
* then also delete it in the license file.
*/
#pragma once
#include "mongo/base/string_data.h"
#include "mongo/db/matcher/expression_arity.h"
namespace mongo {
/**
* A MatchExpression that represents the ternary "conditional" operator.
*/
class InternalSchemaCondMatchExpression final
: public FixedArityMatchExpression<InternalSchemaCondMatchExpression, 3> {
public:
static constexpr StringData kName = "$_internalSchemaCond"_sd;
InternalSchemaCondMatchExpression()
: FixedArityMatchExpression(MatchType::INTERNAL_SCHEMA_COND) {}
const MatchExpression* condition() const {
return expressions()[0].get();
}
const MatchExpression* thenBranch() const {
return expressions()[1].get();
}
const MatchExpression* elseBranch() const {
return expressions()[2].get();
}
StringData name() const final {
return kName;
}
MatchCategory getCategory() const final {
return MatchCategory::kOther;
}
/**
* If the input object matches 'condition', returns the result of matching it against
* 'thenBranch'. Otherwise, returns the result of matching it against 'elseBranch'.
*/
bool matches(const MatchableDocument* doc, MatchDetails* details = nullptr) const final;
bool matchesSingleElement(const BSONElement& elem, MatchDetails* details = nullptr) const final;
};
} // namespace mongo
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