Struct Wrapper

#[repr(transparent)]
pub struct Wrapper<E: Error + ?Sized + 'static>(pub E);

Wrap an Error to display its error chain in debug messages (format!("{:?}")).

Example

use some_external_mod::{SomeError, some_test};

fn main() -> Result<(), pretty_error_debug::Wrapper<SomeError>> {
    some_test()?;
    Ok(())
}

mod some_external_mod {
    #[derive(Debug)]
    pub struct SomeError;

    impl std::error::Error for SomeError {}

    impl std::fmt::Display for SomeError {
        fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
            f.write_str("Something went wrong")
        }
    }

    pub fn some_test() -> Result<(), SomeError> {
        Err(SomeError)
    }
}

Tuple Fields

0: E

Implementations

impl<E: Error + ?Sized + 'static> Wrapper<E>

pub const fn new(err: E) -> Self

where E: Sized,

Return the wrapped argument.

Trait Implementations

impl<E: Clone + Error + ?Sized + 'static> Clone for Wrapper<E>

fn clone(&self) -> Wrapper<E>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<E: Error + 'static> Debug for Wrapper<E>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<E: Default + Error + ?Sized + 'static> Default for Wrapper<E>

fn default() -> Wrapper<E>

Returns the “default value” for a type.

impl<E: Error + 'static> Display for Wrapper<E>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<E: Error + 'static> Error for Wrapper<E>

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl<E: Error + 'static> From<E> for Wrapper<E>

fn from(value: E) -> Self

Converts to this type from the input type.

impl<E: Hash + Error + ?Sized + 'static> Hash for Wrapper<E>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<E: Ord + Error + ?Sized + 'static> Ord for Wrapper<E>

fn cmp(&self, other: &Wrapper<E>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<E: PartialEq + Error + ?Sized + 'static> PartialEq for Wrapper<E>

fn eq(&self, other: &Wrapper<E>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<E: PartialOrd + Error + ?Sized + 'static> PartialOrd for Wrapper<E>

fn partial_cmp(&self, other: &Wrapper<E>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<E: Copy + Error + ?Sized + 'static> Copy for Wrapper<E>

impl<E: Eq + Error + ?Sized + 'static> Eq for Wrapper<E>

impl<E: Error + ?Sized + 'static> StructuralPartialEq for Wrapper<E>