kosame_sql 0.3.0

Macro-based Rust ORM focused on developer ergonomics
Documentation 
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

use std::fmt::Write;

use crate::{Dialect, Formatter};

pub trait FmtSql {
    fn fmt_sql<D>(&self, formatter: &mut Formatter<D>) -> crate::Result
    where
        D: Dialect;

    fn to_sql_string<D>(&self) -> Result<String, crate::Error>
    where
        D: Dialect,
    {
        let mut result = String::new();
        let mut formatter = Formatter::<D>::new(&mut result);
        self.fmt_sql(&mut formatter)?;
        Ok(result)
    }
}

impl FmtSql for &str {
    fn fmt_sql<D>(&self, formatter: &mut Formatter<D>) -> crate::Result
    where
        D: Dialect,
    {
        formatter.write_str(self)
    }
}

impl<T> FmtSql for Option<T>
where
    T: FmtSql,
{
    fn fmt_sql<D>(&self, formatter: &mut Formatter<D>) -> crate::Result
    where
        D: Dialect,
    {
        if let Some(inner) = self {
            inner.fmt_sql(formatter)?;
        }
        Ok(())
    }
}