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// Copyright 2021 Datafuse Labs
//
// 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.

use std::fmt::Display;
use std::fmt::Formatter;

use derive_visitor::Drive;
use derive_visitor::DriveMut;

use crate::ast::ShowLimit;

#[derive(Debug, Clone, PartialEq, Drive, DriveMut)]
pub struct ShowLocksStmt {
    pub in_account: bool,
    pub limit: Option<ShowLimit>,
}

impl Display for ShowLocksStmt {
    fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
        write!(f, "SHOW LOCKS")?;
        if self.in_account {
            write!(f, " IN ACCOUNT")?;
        }
        if let Some(limit) = &self.limit {
            write!(f, " {}", limit)?
        }

        Ok(())
    }
}