Skip to main content

sqlparser/dialect/
ansi.rs

1// Licensed to the Apache Software Foundation (ASF) under one
2// or more contributor license agreements.  See the NOTICE file
3// distributed with this work for additional information
4// regarding copyright ownership.  The ASF licenses this file
5// to you under the Apache License, Version 2.0 (the
6// "License"); you may not use this file except in compliance
7// with the License.  You may obtain a copy of the License at
8//
9//   http://www.apache.org/licenses/LICENSE-2.0
10//
11// Unless required by applicable law or agreed to in writing,
12// software distributed under the License is distributed on an
13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14// KIND, either express or implied.  See the License for the
15// specific language governing permissions and limitations
16// under the License.
17
18use crate::dialect::Dialect;
19
20/// A [`Dialect`] for [ANSI SQL](https://en.wikipedia.org/wiki/SQL:2011).
21#[derive(#[automatically_derived]
impl ::core::fmt::Debug for AnsiDialect {
    #[inline]
    fn fmt(&self, f: &mut ::core::fmt::Formatter) -> ::core::fmt::Result {
        ::core::fmt::Formatter::write_str(f, "AnsiDialect")
    }
}Debug, #[automatically_derived]
impl ::core::default::Default for AnsiDialect {
    #[inline]
    fn default() -> AnsiDialect { AnsiDialect {} }
}Default, #[automatically_derived]
impl ::core::clone::Clone for AnsiDialect {
    #[inline]
    fn clone(&self) -> AnsiDialect { *self }
}Clone, #[automatically_derived]
impl ::core::marker::Copy for AnsiDialect { }Copy, #[automatically_derived]
impl ::core::cmp::PartialEq for AnsiDialect {
    #[inline]
    fn eq(&self, other: &AnsiDialect) -> bool { true }
}PartialEq, #[automatically_derived]
impl ::core::cmp::Eq for AnsiDialect {
    #[inline]
    #[doc(hidden)]
    #[coverage(off)]
    fn assert_fields_are_eq(&self) {}
}Eq, #[automatically_derived]
impl ::core::hash::Hash for AnsiDialect {
    #[inline]
    fn hash<__H: ::core::hash::Hasher>(&self, state: &mut __H) {}
}Hash, #[automatically_derived]
impl ::core::cmp::PartialOrd for AnsiDialect {
    #[inline]
    fn partial_cmp(&self, other: &AnsiDialect)
        -> ::core::option::Option<::core::cmp::Ordering> {
        ::core::option::Option::Some(::core::cmp::Ordering::Equal)
    }
}PartialOrd, #[automatically_derived]
impl ::core::cmp::Ord for AnsiDialect {
    #[inline]
    fn cmp(&self, other: &AnsiDialect) -> ::core::cmp::Ordering {
        ::core::cmp::Ordering::Equal
    }
}Ord)]
22#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
23pub struct AnsiDialect {}
24
25impl Dialect for AnsiDialect {
26    fn is_identifier_start(&self, ch: char) -> bool {
27        ch.is_ascii_lowercase() || ch.is_ascii_uppercase()
28    }
29
30    fn is_identifier_part(&self, ch: char) -> bool {
31        ch.is_ascii_lowercase() || ch.is_ascii_uppercase() || ch.is_ascii_digit() || ch == '_'
32    }
33
34    fn require_interval_qualifier(&self) -> bool {
35        true
36    }
37
38    /// The SQL standard explicitly states that block comments nest.
39    fn supports_nested_comments(&self) -> bool {
40        true
41    }
42}