global: snapshot

crates/brk_core/src/structs/mod.rs

@@ -22,6 +22,7 @@ mod quarterindex;
 mod sats;
 mod stored_u32;
 mod stored_u64;
+mod stored_u8;
 mod stored_usize;
 mod timestamp;
 mod txid;
@@ -58,6 +59,7 @@ pub use monthindex::*;
 pub use ohlc::*;
 pub use quarterindex::*;
 pub use sats::*;
+pub use stored_u8::*;
 pub use stored_u32::*;
 pub use stored_u64::*;
 pub use stored_usize::*;

crates/brk_core/src/structs/stored_u8.rs

@@ -0,0 +1,79 @@
+use std::ops::{Add, Div};
+
+use derive_deref::Deref;
+use serde::Serialize;
+use zerocopy::{FromBytes, Immutable, IntoBytes, KnownLayout};
+
+use crate::CheckedSub;
+
+#[derive(
+    Debug,
+    Deref,
+    Clone,
+    Copy,
+    PartialEq,
+    Eq,
+    PartialOrd,
+    Ord,
+    FromBytes,
+    Immutable,
+    IntoBytes,
+    KnownLayout,
+    Serialize,
+)]
+pub struct StoredU8(u8);
+
+impl StoredU8 {
+    pub const ZERO: Self = Self(0);
+
+    pub fn new(counter: u8) -> Self {
+        Self(counter)
+    }
+}
+
+impl From<u8> for StoredU8 {
+    fn from(value: u8) -> Self {
+        Self(value)
+    }
+}
+
+impl From<usize> for StoredU8 {
+    fn from(value: usize) -> Self {
+        Self(value as u8)
+    }
+}
+
+impl CheckedSub<StoredU8> for StoredU8 {
+    fn checked_sub(self, rhs: Self) -> Option<Self> {
+        self.0.checked_sub(rhs.0).map(Self)
+    }
+}
+
+impl Div<usize> for StoredU8 {
+    type Output = Self;
+    fn div(self, rhs: usize) -> Self::Output {
+        Self(self.0 / rhs as u8)
+    }
+}
+
+impl Add for StoredU8 {
+    type Output = Self;
+    fn add(self, rhs: Self) -> Self::Output {
+        Self(self.0 + rhs.0)
+    }
+}
+
+impl From<f64> for StoredU8 {
+    fn from(value: f64) -> Self {
+        if value < 0.0 || value > u32::MAX as f64 {
+            panic!()
+        }
+        Self(value as u8)
+    }
+}
+
+impl From<StoredU8> for f64 {
+    fn from(value: StoredU8) -> Self {
+        value.0 as f64
+    }
+}

crates/brk_core/src/structs/txversion.rs

@@ -2,6 +2,8 @@ use derive_deref::Deref;
 use serde::Serialize;
 use zerocopy::{FromBytes, Immutable, IntoBytes, KnownLayout};
 
+use super::StoredU8;
+
 #[derive(Debug, Deref, Clone, Copy, Immutable, IntoBytes, KnownLayout, FromBytes, Serialize)]
 pub struct TxVersion(i32);
 
@@ -16,3 +18,9 @@ impl From<TxVersion> for bitcoin::transaction::Version {
         Self(value.0)
     }
 }
+
+impl From<TxVersion> for StoredU8 {
+    fn from(value: TxVersion) -> Self {
+        Self::from(value.0 as u8)
+    }
+}