global: snapshot

storable_vec/src/enums/error.rs

@@ -0,0 +1,34 @@
+use std::{
+    fmt::{self, Debug},
+    io,
+};
+
+pub type Result<T, E = Error> = std::result::Result<T, E>;
+
+#[derive(Debug)]
+pub enum Error {
+    MmapsVecIsTooSmall,
+    IO(io::Error),
+    UnsafeSliceSerde(unsafe_slice_serde::Error),
+    IndexTooHigh,
+    ExpectFileToHaveIndex,
+    ExpectVecToHaveIndex,
+    FailedKeyTryIntoUsize,
+}
+
+impl fmt::Display for Error {
+    // This trait requires `fmt` with this exact signature.
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            Error::MmapsVecIsTooSmall => write!(f, "Mmaps vec is too small"),
+            Error::IO(error) => Debug::fmt(&error, f),
+            Error::UnsafeSliceSerde(error) => Debug::fmt(&error, f),
+            Error::IndexTooHigh => write!(f, "Index too high"),
+            Error::ExpectFileToHaveIndex => write!(f, "Expect file to have index"),
+            Error::ExpectVecToHaveIndex => write!(f, "Expect vec to have index"),
+            Error::FailedKeyTryIntoUsize => write!(f, "Failed to convert key to usize"),
+        }
+    }
+}
+
+impl std::error::Error for Error {}