spg_sqlx/types/
float.rs

1//! v7.16.0 — `Type` / `Encode` / `Decode` for f64 / f32 / FLOAT.
2
3use sqlx_core::decode::Decode;
4use sqlx_core::encode::{Encode, IsNull};
5use sqlx_core::error::BoxDynError;
6use sqlx_core::types::Type;
7
8use spg_embedded::Value as EngineValue;
9
10use crate::arguments::SpgArgumentValue;
11use crate::database::Spg;
12use crate::type_info::{Kind, SpgTypeInfo};
13use crate::value::SpgValueRef;
14
15impl Type<Spg> for f64 {
16    fn type_info() -> SpgTypeInfo {
17        SpgTypeInfo::of(Kind::Float)
18    }
19    fn compatible(ty: &SpgTypeInfo) -> bool {
20        matches!(ty.kind(), Kind::Float)
21    }
22}
23
24impl<'q> Encode<'q, Spg> for f64 {
25    fn encode_by_ref(
26        &self,
27        buf: &mut Vec<SpgArgumentValue<'q>>,
28    ) -> Result<IsNull, BoxDynError> {
29        buf.push(SpgArgumentValue {
30            value: EngineValue::Float(*self),
31            type_info: Some(<f64 as Type<Spg>>::type_info()),
32            _phantom: core::marker::PhantomData,
33        });
34        Ok(IsNull::No)
35    }
36}
37
38impl<'r> Decode<'r, Spg> for f64 {
39    fn decode(value: SpgValueRef<'r>) -> Result<Self, BoxDynError> {
40        match value.engine() {
41            EngineValue::Float(x) => Ok(*x),
42            other => Err(format!("cannot decode {other:?} as f64 / FLOAT").into()),
43        }
44    }
45}
46
47impl Type<Spg> for f32 {
48    fn type_info() -> SpgTypeInfo {
49        SpgTypeInfo::of(Kind::Float)
50    }
51    fn compatible(ty: &SpgTypeInfo) -> bool {
52        matches!(ty.kind(), Kind::Float)
53    }
54}
55
56impl<'q> Encode<'q, Spg> for f32 {
57    fn encode_by_ref(
58        &self,
59        buf: &mut Vec<SpgArgumentValue<'q>>,
60    ) -> Result<IsNull, BoxDynError> {
61        buf.push(SpgArgumentValue {
62            value: EngineValue::Float(f64::from(*self)),
63            type_info: Some(<f32 as Type<Spg>>::type_info()),
64            _phantom: core::marker::PhantomData,
65        });
66        Ok(IsNull::No)
67    }
68}
69
70impl<'r> Decode<'r, Spg> for f32 {
71    fn decode(value: SpgValueRef<'r>) -> Result<Self, BoxDynError> {
72        match value.engine() {
73            #[allow(clippy::cast_possible_truncation)]
74            EngineValue::Float(x) => Ok(*x as f32),
75            other => Err(format!("cannot decode {other:?} as f32 / FLOAT").into()),
76        }
77    }
78}
spg_sqlx/types/float.rs

spg_sqlx/types/
float.rs
