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Add Result type with custom Error

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This commit is contained in:
Ethan Girouard
2026-06-21 16:36:07 -04:00
parent c438e60e24
commit 3c58192957
1 changed files with 8 additions and 6 deletions
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14
src/util/error.rs
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@@ -43,6 +43,8 @@ impl fmt::Display for ErrorLocation {
} }
} }
pub type Result<T> = std::result::Result<T, Error>;
#[derive(Debug, Clone, Deserialize, Serialize, thiserror::Error)] #[derive(Debug, Clone, Deserialize, Serialize, thiserror::Error)]
pub struct Error { pub struct Error {
#[source] #[source]
@@ -247,9 +249,9 @@ pub trait Contextualize<R> {
fn err_context(self, context: impl Into<String>) -> R; fn err_context(self, context: impl Into<String>) -> R;
} }
impl<T, E: Into<Error>> Contextualize<Result<T, Error>> for Result<T, E> { impl<T, E: Into<Error>> Contextualize<Result<T>> for std::result::Result<T, E> {
#[track_caller] #[track_caller]
fn err_context(self, context: impl Into<String>) -> Result<T, Error> { fn err_context(self, context: impl Into<String>) -> Result<T> {
// Closures can't (currently) `track_caller`, so a simple map_err doesn't work // Closures can't (currently) `track_caller`, so a simple map_err doesn't work
// See https://github.com/rust-lang/rust/issues/87417 // See https://github.com/rust-lang/rust/issues/87417
match self { match self {
@@ -259,16 +261,16 @@ impl<T, E: Into<Error>> Contextualize<Result<T, Error>> for Result<T, E> {
} }
} }
impl<T> Contextualize<Result<T, Error>> for Option<T> { impl<T> Contextualize<Result<T>> for Option<T> {
#[track_caller] #[track_caller]
fn err_context(self, context: impl Into<String>) -> Result<T, Error> { fn err_context(self, context: impl Into<String>) -> Result<T> {
self.ok_or(Error::new_here(ErrorType::Error(context.into()))) self.ok_or(Error::new_here(ErrorType::Error(context.into())))
} }
} }
impl<T, E: Into<Error>> Contextualize<Result<T, Error>> for E { impl<T, E: Into<Error>> Contextualize<Result<T>> for E {
#[track_caller] #[track_caller]
fn err_context(self, context: impl Into<String>) -> Result<T, Error> { fn err_context(self, context: impl Into<String>) -> Result<T> {
Err(self.into().with_context(context)) Err(self.into().with_context(context))
} }
} }