vec: iter + global: snapshot

crates/brk_core/src/structs/height.rs

@@ -28,8 +28,8 @@ use crate::CheckedSub;
 pub struct Height(u32);
 
 impl Height {
-    pub const ZERO: Self = Height(0);
-    pub const MAX: Self = Height(u32::MAX);
+    pub const ZERO: Self = Self(0);
+    pub const MAX: Self = Self(u32::MAX);
 
     pub fn new(height: u32) -> Self {
         Self(height)

crates/brk_core/src/structs/txindex.rs

@@ -29,6 +29,12 @@ use super::StoredU32;
 pub struct TxIndex(u32);
 
 impl TxIndex {
+    pub const ZERO: Self = Self(0);
+
+    pub fn new(txindex: u32) -> Self {
+        Self(txindex)
+    }
+
     pub fn incremented(self) -> Self {
         Self(*self + 1)
     }

crates/brk_core/src/structs/weight.rs

@@ -19,36 +19,29 @@ use zerocopy::{FromBytes, Immutable, IntoBytes, KnownLayout};
     FromBytes,
     Serialize,
 )]
-pub struct Weight(u32);
+pub struct Weight(u64);
 
 impl From<bitcoin::Weight> for Weight {
     fn from(value: bitcoin::Weight) -> Self {
-        let wu = value.to_wu();
-        if wu > u32::MAX as u64 {
-            unreachable!("wu is too big, shouldn't happen")
-        }
-        Self(wu as u32)
+        Self(value.to_wu())
     }
 }
 
 impl From<Weight> for bitcoin::Weight {
     fn from(value: Weight) -> Self {
-        Self::from_wu(*value as u64)
+        Self::from_wu(value.0)
     }
 }
 
 impl From<usize> for Weight {
     fn from(value: usize) -> Self {
-        if value > u32::MAX as usize {
-            panic!()
-        }
-        Self(value as u32)
+        Self(value as u64)
     }
 }
 
 impl From<f64> for Weight {
     fn from(value: f64) -> Self {
-        Self(value as u32)
+        Self(value as u64)
     }
 }