// Copyright 2023 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#pragma once

#include <Parsers/IAST.h>


namespace DB
{


/** USE query
  */
class ASTUseQuery : public IAST
{
public:
    String database;

    /** Get the text that identifies this element. */
    String getID() const override { return "UseQuery_" + database; };

    ASTPtr clone() const override { return std::make_shared<ASTUseQuery>(*this); }

protected:
    void formatImpl(const FormatSettings & settings, FormatState &, FormatStateStacked) const override
    {
        settings.ostr << (settings.hilite ? hilite_keyword : "") << "USE " << (settings.hilite ? hilite_none : "")
                      << backQuoteIfNeed(database);
        return;
    }
};

} // namespace DB