alloy_primitives/
diesel.rs

1//! Support for the [`diesel`](https://crates.io/crates/diesel) crate.
2//!
3//! Supports big-endian binary serialization via into sql_types::Binary.
4//! Similar to [`ruint`'s implementation](https://github.com/recmo/uint/blob/fd57517b36cda8341f7740dacab4b1ec186af948/src/support/diesel.rs)
5
6use crate::{FixedBytes, Signature, SignatureError};
7
8use diesel::{
9    backend::Backend,
10    deserialize::{FromSql, Result as DeserResult},
11    query_builder::bind_collector::RawBytesBindCollector,
12    serialize::{IsNull, Output, Result as SerResult, ToSql},
13    sql_types::Binary,
14};
15use std::io::Write;
16
17impl<const BYTES: usize, Db> ToSql<Binary, Db> for FixedBytes<BYTES>
18where
19    for<'c> Db: Backend<BindCollector<'c> = RawBytesBindCollector<Db>>,
20{
21    fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Db>) -> SerResult {
22        out.write_all(&self[..])?;
23        Ok(IsNull::No)
24    }
25}
26
27impl<const BYTES: usize, Db: Backend> FromSql<Binary, Db> for FixedBytes<BYTES>
28where
29    *const [u8]: FromSql<Binary, Db>,
30{
31    fn from_sql(bytes: Db::RawValue<'_>) -> DeserResult<Self> {
32        let bytes: *const [u8] = FromSql::<Binary, Db>::from_sql(bytes)?;
33        let bytes = unsafe { &*bytes };
34        Self::try_from(bytes).map_err(|e| e.into())
35    }
36}
37
38impl<Db: Backend> ToSql<Binary, Db> for Signature
39where
40    for<'c> Db: Backend<BindCollector<'c> = RawBytesBindCollector<Db>>,
41{
42    fn to_sql<'b>(&'b self, out: &mut Output<'b, '_, Db>) -> SerResult {
43        out.write_all(&self.as_erc2098())?;
44        Ok(IsNull::No)
45    }
46}
47
48impl<Db: Backend> FromSql<Binary, Db> for Signature
49where
50    *const [u8]: FromSql<Binary, Db>,
51{
52    fn from_sql(bytes: Db::RawValue<'_>) -> DeserResult<Self> {
53        let bytes: *const [u8] = FromSql::<Binary, Db>::from_sql(bytes)?;
54        let bytes = unsafe { &*bytes };
55        if bytes.len() != 64 {
56            return Err(SignatureError::FromBytes("Invalid length").into());
57        }
58        Ok(Self::from_erc2098(bytes))
59    }
60}
alloy_primitives/diesel.rs

alloy_primitives/
diesel.rs
