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Removed unnecessary allocations within StringError::with_err and StringError::with_err_backtrace.

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This commit is contained in:
Filipe Rodrigues 2020-03-23 00:12:55 +00:00
parent 0d4311ab61
commit 2b5c6ee675
1 changed files with 10 additions and 5 deletions
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15
src/constructor.rs
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@ -42,8 +42,11 @@ impl<E: Sized> StringError<E, ()>
/// Returns a function to be passed to `map_err`, `map_panic_err` or alike /// Returns a function to be passed to `map_err`, `map_panic_err` or alike
/// that returns a string error with the underlying error but no backtrace /// that returns a string error with the underlying error but no backtrace
pub fn with_err<R: Into<E>>(msg: impl Into<String>) -> impl FnOnce(R) -> Self { pub fn with_err<R: Into<E>>(msg: impl Into<String>) -> impl FnOnce(R) -> Self {
let msg = msg.into(); move |err| Self {
move |err| Self { msg, bt: (), err: err.into() } msg: msg.into(),
bt: (), err:
err.into()
}
} }
} }
@ -53,8 +56,10 @@ impl<E: Sized> StringError<E, Backtrace>
/// Returns a function to be passed to `map_err`, `map_panic_err` or alike /// Returns a function to be passed to `map_err`, `map_panic_err` or alike
/// that returns a string error with the underlying error and a backtrace /// that returns a string error with the underlying error and a backtrace
pub fn with_err_backtrace<R: Into<E>>(msg: impl Into<String>) -> impl FnOnce(R) -> Self { pub fn with_err_backtrace<R: Into<E>>(msg: impl Into<String>) -> impl FnOnce(R) -> Self {
let msg = msg.into(); move |err| Self {
let bt = Backtrace::force_capture(); msg: msg.into(),
move |err| Self { msg, bt, err: err.into() } bt: Backtrace::force_capture(),
err: err.into()
}
} }
} }