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dialect.rs
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dialect.rs
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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.
/// Dialect is used to capture dialect specific syntax.
/// Note: this trait will eventually be replaced by the Dialect in the SQLparser package
///
/// See <https://github.com/sqlparser-rs/sqlparser-rs/pull/1170>
pub trait Dialect {
fn identifier_quote_style(&self) -> Option<char>;
}
pub struct DefaultDialect {}
impl Dialect for DefaultDialect {
fn identifier_quote_style(&self) -> Option<char> {
Some('"')
}
}
pub struct PostgreSqlDialect {}
impl Dialect for PostgreSqlDialect {
fn identifier_quote_style(&self) -> Option<char> {
Some('"')
}
}
pub struct MySqlDialect {}
impl Dialect for MySqlDialect {
fn identifier_quote_style(&self) -> Option<char> {
Some('`')
}
}
pub struct SqliteDialect {}
impl Dialect for SqliteDialect {
fn identifier_quote_style(&self) -> Option<char> {
Some('`')
}
}
pub struct CustomDialect {
identifier_quote_style: Option<char>,
}
impl CustomDialect {
pub fn new(identifier_quote_style: Option<char>) -> Self {
Self {
identifier_quote_style,
}
}
}
impl Dialect for CustomDialect {
fn identifier_quote_style(&self) -> Option<char> {
self.identifier_quote_style
}
}