Add optional borsh serialization/deserialization

Cargo.toml

@@ -29,6 +29,7 @@ __internal_bench = []
 
 [dependencies]
 serde = { version = "1.0.99", default-features = false, optional = true }
+borsh = { version = "1.2", default-features = false, optional = true, features = ["derive"] }
 pure-rust-locales = { version = "0.7", optional = true }
 rkyv = { version = "0.7", optional = true }
 arbitrary = { version = "1.0.0", features = ["derive"], optional = true }
@@ -58,7 +59,7 @@ bincode = { version = "1.3.0" }
 wasm-bindgen-test = "0.3"
 
 [package.metadata.docs.rs]
-features = ["arbitrary, rkyv, serde, unstable-locales"]
+features = ["arbitrary, rkyv, serde, unstable-locales, borsh"]
 rustdoc-args = ["--cfg", "docsrs"]
 
 [package.metadata.playground]

src/datetime/mod.rs

@@ -74,6 +74,7 @@
 /// [`TimeZone`](./offset/trait.TimeZone.html) implementations.
 #[derive(Clone)]
 #[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))]
+#[cfg_attr(feature = "borsh", derive(borsh::BorshDeserialize, borsh::BorshSerialize))]
 pub struct DateTime<Tz: TimeZone> {
     datetime: NaiveDateTime,
     offset: Tz::Offset,

src/month.rs

@@ -35,6 +35,11 @@
     archive_attr(derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug, Hash))
 )]
 #[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))]
+#[cfg_attr(
+    feature = "borsh",
+    derive(borsh::BorshDeserialize, borsh::BorshSerialize),
+    borsh(use_discriminant = true)
+)]
 pub enum Month {
     /// January
     January = 0,

src/naive/date.rs

@@ -195,6 +195,7 @@
     feature = "rkyv",
     archive_attr(derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug, Hash))
 )]
+#[cfg_attr(feature = "borsh", derive(borsh::BorshDeserialize, borsh::BorshSerialize))]
 pub struct NaiveDate {
     ymdf: DateImpl, // (year << 13) | of
 }

src/naive/datetime/mod.rs

@@ -78,6 +78,7 @@
     archive_attr(derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug, Hash))
 )]
 #[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))]
+#[cfg_attr(feature = "borsh", derive(borsh::BorshDeserialize, borsh::BorshSerialize))]
 pub struct NaiveDateTime {
     date: NaiveDate,
     time: NaiveTime,

src/naive/isoweek.rs

@@ -22,6 +22,7 @@
     feature = "rkyv",
     archive_attr(derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug, Hash))
 )]
+#[cfg_attr(feature = "borsh", derive(borsh::BorshDeserialize, borsh::BorshSerialize))]
 pub struct IsoWeek {
     // note that this allows for larger year range than `NaiveDate`.
     // this is crucial because we have an edge case for the first and last week supported,

src/naive/time/mod.rs

@@ -204,6 +204,7 @@
     feature = "rkyv",
     archive_attr(derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug, Hash))
 )]
+#[cfg_attr(feature = "borsh", derive(borsh::BorshDeserialize, borsh::BorshSerialize))]
 pub struct NaiveTime {
     secs: u32,
     frac: u32,

src/offset/fixed.rs

@@ -22,6 +22,7 @@
 #[derive(PartialEq, Eq, Hash, Copy, Clone)]
 #[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))]
 #[cfg_attr(feature = "rkyv", archive_attr(derive(Clone, Copy, PartialEq, Eq, Hash, Debug)))]
+#[cfg_attr(feature = "borsh", derive(borsh::BorshDeserialize, borsh::BorshSerialize))]
 pub struct FixedOffset {
     local_minus_utc: i32,
 }

src/offset/local/mod.rs

@@ -104,6 +104,7 @@
 #[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))]
 #[cfg_attr(feature = "rkyv", archive_attr(derive(Clone, Copy, Debug)))]
 #[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))]
+#[cfg_attr(feature = "borsh", derive(borsh::BorshDeserialize, borsh::BorshSerialize))]
 pub struct Local;
 
 impl Local {

src/offset/utc.rs

@@ -43,6 +43,7 @@
 #[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))]
 #[cfg_attr(feature = "rkyv", archive_attr(derive(Clone, Copy, PartialEq, Eq, Debug, Hash)))]
 #[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))]
+#[cfg_attr(feature = "borsh", derive(borsh::BorshDeserialize, borsh::BorshSerialize))]
 pub struct Utc;
 
 #[cfg(feature = "clock")]

src/time_delta.rs

@@ -56,6 +56,7 @@
     feature = "rkyv",
     archive_attr(derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Debug, Hash))
 )]
+#[cfg_attr(feature = "borsh", derive(borsh::BorshDeserialize, borsh::BorshSerialize))]
 pub struct TimeDelta {
     secs: i64,
     nanos: i32, // Always 0 <= nanos < NANOS_PER_SEC

src/weekday.rs

@@ -33,6 +33,11 @@
 #[cfg_attr(feature = "rkyv", derive(Archive, Deserialize, Serialize))]
 #[cfg_attr(feature = "rkyv", archive_attr(derive(Clone, Copy, PartialEq, Eq, Debug, Hash)))]
 #[cfg_attr(feature = "arbitrary", derive(arbitrary::Arbitrary))]
+#[cfg_attr(
+    feature = "borsh",
+    derive(borsh::BorshDeserialize, borsh::BorshSerialize),
+    borsh(use_discriminant = true)
+)]
 pub enum Weekday {
     /// Monday.
     Mon = 0,