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
36
37
38
39
40
41
42
43
//! The SQLite query builder

use super::backend::Sqlite;
use crate::query_builder::QueryBuilder;
use crate::result::QueryResult;

mod limit_offset;
mod returning;

/// Constructs SQL queries for use with the SQLite backend
#[allow(missing_debug_implementations)]
#[derive(Default)]
pub struct SqliteQueryBuilder {
    sql: String,
}

impl SqliteQueryBuilder {
    /// Construct a new query builder with an empty query
    pub fn new() -> Self {
        SqliteQueryBuilder::default()
    }
}

impl QueryBuilder<Sqlite> for SqliteQueryBuilder {
    fn push_sql(&mut self, sql: &str) {
        self.sql.push_str(sql);
    }

    fn push_identifier(&mut self, identifier: &str) -> QueryResult<()> {
        self.push_sql("`");
        self.push_sql(&identifier.replace('`', "``"));
        self.push_sql("`");
        Ok(())
    }

    fn push_bind_param(&mut self) {
        self.push_sql("?");
    }

    fn finish(self) -> String {
        self.sql
    }
}