support bytemuck

Cargo.toml

@@ -22,6 +22,7 @@ rustdoc-args = ["--cfg", "docsrs"]
 arbitrary = { default-features = false, optional = true, version = "1.0" }
 arrayvec = { default-features = false, version = "0.7" }
 borsh = { default-features = false, features = ["derive", "unstable__schema"], optional = true, version = "1.1.1" }
+bytemuck = { default-features = false, optional = true, version = "1" }
 bytes = { default-features = false, optional = true, version = "1.0" }
 diesel1 = { default-features = false, optional = true, package = "diesel", version = "1.0" }
 diesel2 = { default-features = false, optional = true, package = "diesel", version = "2.1" }

src/decimal.rs

@@ -13,6 +13,9 @@ use core::{
  str::FromStr,
 };
 
+#[cfg(feature = "bytemuck")]
+use bytemuck::{Pod, Zeroable};
+
 // Diesel configuration
 #[cfg(feature = "diesel2")]
 use diesel::deserialize::FromSqlRow;
@@ -109,7 +112,7 @@ pub struct UnpackedDecimal {
  sql_type = "Numeric"
 )]
 #[cfg_attr(feature = "diesel2", derive(FromSqlRow, AsExpression), diesel(sql_type = Numeric))]
-#[cfg_attr(feature = "c-repr", repr(C))]
+#[cfg_attr(any(feature = "c-repr", feature = "bytemuck"), repr(C))]
 #[cfg_attr(
  feature = "borsh",
  derive(borsh::BorshDeserialize, borsh::BorshSerialize, borsh::BorshSchema)
@@ -134,6 +137,14 @@ pub struct Decimal {
  mid: u32,
 }
 
+#[cfg(feature = "bytemuck")]
+#[allow(unsafe_code)]
+unsafe impl Pod for Decimal {}
+
+#[cfg(feature = "bytemuck")]
+#[allow(unsafe_code)]
+unsafe impl Zeroable for Decimal {}
+
 #[cfg(feature = "ndarray")]
 impl ndarray::ScalarOperand for Decimal {}
 

src/lib.rs

@@ -1,5 +1,6 @@
 #![doc = include_str!(concat!(env!("OUT_DIR"), "/README-lib.md"))]
-#![forbid(unsafe_code)]
+#![cfg_attr(not(feature = "bytemuck"), forbid(unsafe_code))]
+#![cfg_attr(feature = "bytemuck", deny(unsafe_code))]
 #![deny(clippy::print_stdout, clippy::print_stderr)]
 #![cfg_attr(not(feature = "std"), no_std)]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]