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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;
#[derive(Debug, Clone, PartialEq, Drive, DriveMut)]
pub struct AlterRoleStmt {
pub if_exists: bool,
pub name: String,
pub action: AlterRoleAction,
}
impl Display for AlterRoleStmt {
fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
write!(f, "ALTER ROLE ")?;
if self.if_exists {
write!(f, "IF EXISTS ")?;
}
write!(f, "{}", self.name)?;
write!(f, "{}", self.action)?;
Ok(())
}
}
#[derive(Debug, Clone, PartialEq, Drive, DriveMut)]
pub enum AlterRoleAction {
Comment(Option<String>),
}
impl Display for AlterRoleAction {
fn fmt(&self, f: &mut Formatter) -> std::fmt::Result {
match self {
AlterRoleAction::Comment(Some(comment)) => {
write!(f, " SET COMMENT = '{}'", comment)?;
}
AlterRoleAction::Comment(None) => {
write!(f, " UNSET COMMENT")?;
}
}
Ok(())
}
}