1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35

// 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, Default)]
pub struct SnowflakeDialect;

impl Dialect for SnowflakeDialect {
    // see https://docs.snowflake.com/en/sql-reference/identifiers-syntax.html
    fn is_identifier_start(&self, ch: char) -> bool {
        ('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 == '_'
    }

    fn supports_within_after_array_aggregation(&self) -> bool {
        true
    }
}