mirror of
https://github.com/apache/datafusion-sqlparser-rs.git
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38 lines
1.3 KiB
Rust
38 lines
1.3 KiB
Rust
// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use crate::dialect::Dialect;
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#[derive(Debug)]
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pub struct SQLiteDialect {}
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impl Dialect for SQLiteDialect {
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// see https://www.sqlite.org/lang_keywords.html
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// parse `...`, [...] and "..." as identifier
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// TODO: support depending on the context tread '...' as identifier too.
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fn is_delimited_identifier_start(&self, ch: char) -> bool {
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ch == '`' || ch == '"' || ch == '['
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}
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fn is_identifier_start(&self, ch: char) -> bool {
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// See https://www.sqlite.org/draft/tokenreq.html
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('a'..='z').contains(&ch)
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|| ('A'..='Z').contains(&ch)
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|| ch == '_'
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|| ch == '$'
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|| ('\u{007f}'..='\u{ffff}').contains(&ch)
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}
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fn is_identifier_part(&self, ch: char) -> bool {
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self.is_identifier_start(ch) || ('0'..='9').contains(&ch)
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}
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}
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