diesel/pg/types/
integers.rs

1use byteorder::{NetworkEndian, ReadBytesExt, WriteBytesExt};
2use std::io::prelude::*;
3
4use deserialize::{self, FromSql};
5use pg::Pg;
6use serialize::{self, IsNull, Output, ToSql};
7use sql_types;
8
9impl FromSql<sql_types::Oid, Pg> for u32 {
10    fn from_sql(bytes: Option<&[u8]>) -> deserialize::Result<Self> {
11        let mut bytes = not_none!(bytes);
12        bytes.read_u32::<NetworkEndian>().map_err(|e| e.into())
13    }
14}
15
16impl ToSql<sql_types::Oid, Pg> for u32 {
17    fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> serialize::Result {
18        out.write_u32::<NetworkEndian>(*self)
19            .map(|_| IsNull::No)
20            .map_err(|e| e.into())
21    }
22}
23
24#[test]
25fn i16_to_sql() {
26    let mut bytes = Output::test();
27    ToSql::<sql_types::SmallInt, Pg>::to_sql(&1i16, &mut bytes).unwrap();
28    ToSql::<sql_types::SmallInt, Pg>::to_sql(&0i16, &mut bytes).unwrap();
29    ToSql::<sql_types::SmallInt, Pg>::to_sql(&-1i16, &mut bytes).unwrap();
30    assert_eq!(bytes, vec![0, 1, 0, 0, 255, 255]);
31}
32
33#[test]
34fn i32_to_sql() {
35    let mut bytes = Output::test();
36    ToSql::<sql_types::Integer, Pg>::to_sql(&1i32, &mut bytes).unwrap();
37    ToSql::<sql_types::Integer, Pg>::to_sql(&0i32, &mut bytes).unwrap();
38    ToSql::<sql_types::Integer, Pg>::to_sql(&-1i32, &mut bytes).unwrap();
39    assert_eq!(bytes, vec![0, 0, 0, 1, 0, 0, 0, 0, 255, 255, 255, 255]);
40}
41
42#[test]
43fn i64_to_sql() {
44    let mut bytes = Output::test();
45    ToSql::<sql_types::BigInt, Pg>::to_sql(&1i64, &mut bytes).unwrap();
46    ToSql::<sql_types::BigInt, Pg>::to_sql(&0i64, &mut bytes).unwrap();
47    ToSql::<sql_types::BigInt, Pg>::to_sql(&-1i64, &mut bytes).unwrap();
48    assert_eq!(
49        bytes,
50        vec![
51            0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255,
52        ]
53    );
54}
diesel/pg/types/integers.rs

diesel/pg/types/
integers.rs
