mirror of
https://github.com/apache/datafusion-sqlparser-rs.git
synced 2025-09-03 20:50:33 +00:00
33 lines
1.2 KiB
Rust
33 lines
1.2 KiB
Rust
// 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 crate::dialect::Dialect;
|
|
|
|
#[derive(Debug)]
|
|
pub struct PostgreSqlDialect {}
|
|
|
|
impl Dialect for PostgreSqlDialect {
|
|
fn is_identifier_start(&self, ch: char) -> bool {
|
|
// See https://www.postgresql.org/docs/11/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
|
|
// We don't yet support identifiers beginning with "letters with
|
|
// diacritical marks and non-Latin letters"
|
|
('a'..='z').contains(&ch) || ('A'..='Z').contains(&ch) || ch == '_'
|
|
}
|
|
|
|
fn is_identifier_part(&self, ch: char) -> bool {
|
|
('a'..='z').contains(&ch)
|
|
|| ('A'..='Z').contains(&ch)
|
|
|| ('0'..='9').contains(&ch)
|
|
|| ch == '$'
|
|
|| ch == '_'
|
|
}
|
|
}
|