chemlib/enums/
condition_type.rs

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
44
45
46
47
48
49
50
51
52
53
use serde::Deserialize;
use serde::Serialize;
use std::io::Write;
use strum_macros::{Display, EnumString};

#[cfg(feature = "diesel")]
use {
    diesel::backend::Backend,
    diesel::deserialize::FromSql,
    diesel::pg::Pg,
    diesel::serialize::{IsNull, Output, ToSql},
    diesel::sql_types::Varchar,
    diesel::{deserialize, not_none, serialize},
};

#[derive(Debug, PartialEq, Clone, Serialize, Deserialize, Display, EnumString)]
#[cfg_attr(feature = "diesel", derive(AsExpression, FromSqlRow))]
#[cfg_attr(feature = "diesel", sql_type = "Varchar")]
pub enum ConditionType {
    Temperature,
    Pressure,
    Spark,
    Plasma,
    Brightness
}

#[cfg(feature = "diesel")]
impl ToSql<Varchar, Pg> for ConditionType {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Pg>) -> serialize::Result {
        match *self {
            ConditionType::Temperature => out.write_all(b"Temperature")?,
            ConditionType::Pressure => out.write_all(b"Pressure")?,
            ConditionType::Spark => out.write_all(b"Spark")?,
            ConditionType::Plasma => out.write_all(b"Plasma")?,
            ConditionType:: Brightness => out.write_all(b"Brightness")?,
        }
        Ok(IsNull::No)
    }
}

#[cfg(feature = "diesel")]
impl FromSql<Varchar, Pg> for ConditionType {
    fn from_sql(bytes: Option<&<Pg as Backend>::RawValue>) -> deserialize::Result<Self> {
        match not_none!(bytes) {
            b"Temperature" => Ok(ConditionType::Temperature),
            b"Pressure" => Ok(ConditionType::Pressure),
            b"Spark" => Ok(ConditionType::Spark),
            b"Plasma" => Ok(ConditionType::Plasma),
            b"Brightness" => Ok(ConditionType::Brightness),
            _ => Err("Unrecognized enum variant".into()),
        }
    }
}