global: one big snapshot

crates/brk_structs/src/structs/semesterindex.rs

@@ -0,0 +1,104 @@
+use std::{
+    fmt::Debug,
+    ops::{Add, AddAssign, Div},
+};
+
+use brk_vecs::{CheckedSub, Printable, StoredCompressed};
+use serde::{Deserialize, Serialize};
+use zerocopy_derive::{FromBytes, Immutable, IntoBytes, KnownLayout};
+
+use super::MonthIndex;
+
+#[derive(
+    Debug,
+    Clone,
+    Copy,
+    PartialEq,
+    Eq,
+    PartialOrd,
+    Ord,
+    Default,
+    Serialize,
+    Deserialize,
+    FromBytes,
+    Immutable,
+    IntoBytes,
+    KnownLayout,
+    StoredCompressed,
+)]
+pub struct SemesterIndex(u16);
+
+impl From<u16> for SemesterIndex {
+    fn from(value: u16) -> Self {
+        Self(value)
+    }
+}
+
+impl From<usize> for SemesterIndex {
+    fn from(value: usize) -> Self {
+        Self(value as u16)
+    }
+}
+
+impl From<SemesterIndex> for u16 {
+    fn from(value: SemesterIndex) -> Self {
+        value.0
+    }
+}
+
+impl From<SemesterIndex> for usize {
+    fn from(value: SemesterIndex) -> Self {
+        value.0 as usize
+    }
+}
+
+impl Add<usize> for SemesterIndex {
+    type Output = Self;
+
+    fn add(self, rhs: usize) -> Self::Output {
+        Self::from(self.0 + rhs as u16)
+    }
+}
+
+impl Add<SemesterIndex> for SemesterIndex {
+    type Output = Self;
+
+    fn add(self, rhs: Self) -> Self::Output {
+        Self::from(self.0 + rhs.0)
+    }
+}
+
+impl AddAssign for SemesterIndex {
+    fn add_assign(&mut self, rhs: Self) {
+        *self = Self(self.0 + rhs.0)
+    }
+}
+
+impl Div<usize> for SemesterIndex {
+    type Output = Self;
+    fn div(self, _: usize) -> Self::Output {
+        unreachable!()
+    }
+}
+
+impl From<MonthIndex> for SemesterIndex {
+    fn from(value: MonthIndex) -> Self {
+        Self((usize::from(value) / 6) as u16)
+    }
+}
+
+impl CheckedSub for SemesterIndex {
+    fn checked_sub(self, rhs: Self) -> Option<Self> {
+        self.0.checked_sub(rhs.0).map(Self)
+    }
+}
+
+impl Printable for SemesterIndex {
+    fn to_string() -> &'static str {
+        "semesterindex"
+    }
+
+    fn to_possible_strings() -> &'static [&'static str] {
+        &["s", "semester", "semesterindex"]
+    }
+}