global: snapshot

crates/brk_core/src/structs/mod.rs

@@ -18,6 +18,7 @@ mod height;
 mod locktime;
 mod monthindex;
 mod ohlc;
+mod quarterindex;
 mod sats;
 mod timestamp;
 mod txid;
@@ -52,6 +53,7 @@ pub use height::*;
 pub use locktime::*;
 pub use monthindex::*;
 pub use ohlc::*;
+pub use quarterindex::*;
 pub use sats::*;
 pub use timestamp::*;
 pub use txid::*;

crates/brk_core/src/structs/quarterindex.rs

@@ -0,0 +1,64 @@
+use std::{fmt::Debug, ops::Add};
+
+use serde::{Deserialize, Serialize};
+use zerocopy::{FromBytes, Immutable, IntoBytes, KnownLayout};
+
+use crate::CheckedSub;
+
+use super::Monthindex;
+
+#[derive(
+    Debug,
+    Clone,
+    Copy,
+    PartialEq,
+    Eq,
+    PartialOrd,
+    Ord,
+    Default,
+    Serialize,
+    Deserialize,
+    FromBytes,
+    Immutable,
+    IntoBytes,
+    KnownLayout,
+)]
+pub struct Quarterindex(u16);
+
+impl From<u16> for Quarterindex {
+    fn from(value: u16) -> Self {
+        Self(value)
+    }
+}
+
+impl From<usize> for Quarterindex {
+    fn from(value: usize) -> Self {
+        Self(value as u16)
+    }
+}
+
+impl From<Quarterindex> for usize {
+    fn from(value: Quarterindex) -> Self {
+        value.0 as usize
+    }
+}
+
+impl Add<usize> for Quarterindex {
+    type Output = Self;
+
+    fn add(self, rhs: usize) -> Self::Output {
+        Self::from(self.0 + rhs as u16)
+    }
+}
+
+impl From<Monthindex> for Quarterindex {
+    fn from(value: Monthindex) -> Self {
+        Self((usize::from(value) / 3) as u16)
+    }
+}
+
+impl CheckedSub for Quarterindex {
+    fn checked_sub(self, rhs: Self) -> Option<Self> {
+        self.0.checked_sub(rhs.0).map(Self)
+    }
+}