Trait error_chain::ChainedError

[+] Show declaration

pub trait ChainedError: Error + Send + 'static {
    type ErrorKind;
    fn from_kind(kind: Self::ErrorKind) -> Self
    where
        Self: Sized;
    fn with_chain<E, K>(error: E, kind: K) -> Self
    where
        Self: Sized,
        E: Error + Send + 'static,
        K: Into<Self::ErrorKind>;
    fn kind(&self) -> &Self::ErrorKind;
    fn iter(&self) -> Iter;
    fn backtrace(&self) -> Option<&Backtrace>;
    fn chain_err<F, EK>(self, error: F) -> Self
    where
        F: FnOnce() -> EK,
        EK: Into<Self::ErrorKind>;

    fn display_chain<'a>(&'a self) -> DisplayChain<'a, Self> { ... }
}

[−] Expand description

This trait is implemented on all the errors generated by the error_chain macro.

Associated Types

type ErrorKind[−]

Associated kind type.

Required methods

fn from_kind(kind: Self::ErrorKind) -> Self where
    Self: Sized, [−]

Constructs an error from a kind, and generates a backtrace.

fn with_chain<E, K>(error: E, kind: K) -> Self where
    Self: Sized,
    E: Error + Send + 'static,
    K: Into<Self::ErrorKind>, [−]

Constructs a chained error from another error and a kind, and generates a backtrace.

fn kind(&self) -> &Self::ErrorKind[−]

Returns the kind of the error.

Important traits for Iter<'a>

impl<'a> Iterator for Iter<'a> type Item = &'a dyn Error;

fn iter(&self) -> Iter[−]

Iterates over the error chain.

fn backtrace(&self) -> Option<&Backtrace>[−]

Returns the backtrace associated with this error.

fn chain_err<F, EK>(self, error: F) -> Self where
    F: FnOnce() -> EK,
    EK: Into<Self::ErrorKind>, [−]

Extends the error chain with a new entry.

Provided methods

fn display_chain<'a>(&'a self) -> DisplayChain<'a, Self>[−]

Returns an object which implements Display for printing the full context of this error.

The full cause chain and backtrace, if present, will be printed.

Implementors

impl ChainedError for error_chain::example_generated::inner::Error[−]

[+] Show hidden undocumented items

type ErrorKind = ErrorKind

fn new(kind: ErrorKind, state: State) -> Error

fn from_kind(kind: Self::ErrorKind) -> Self

fn with_chain<E, K>(error: E, kind: K) -> Self where
    E: Error + Send + 'static,
    K: Into<Self::ErrorKind>, 

fn kind(&self) -> &Self::ErrorKind

Important traits for Iter<'a>

impl<'a> Iterator for Iter<'a> type Item = &'a dyn Error;

fn iter(&self) -> Iter

fn chain_err<F, EK>(self, error: F) -> Self where
    F: FnOnce() -> EK,
    EK: Into<ErrorKind>, 

fn backtrace(&self) -> Option<&Backtrace>

fn extract_backtrace(
    e: &(dyn Error + Send + 'static)
) -> Option<InternalBacktrace>

impl ChainedError for error_chain::example_generated::Error[−]

[+] Show hidden undocumented items

type ErrorKind = ErrorKind

fn new(kind: ErrorKind, state: State) -> Error

fn from_kind(kind: Self::ErrorKind) -> Self

fn with_chain<E, K>(error: E, kind: K) -> Self where
    E: Error + Send + 'static,
    K: Into<Self::ErrorKind>, 

fn kind(&self) -> &Self::ErrorKind

Important traits for Iter<'a>

impl<'a> Iterator for Iter<'a> type Item = &'a dyn Error;

fn iter(&self) -> Iter

fn chain_err<F, EK>(self, error: F) -> Self where
    F: FnOnce() -> EK,
    EK: Into<ErrorKind>, 

fn backtrace(&self) -> Option<&Backtrace>

fn extract_backtrace(
    e: &(dyn Error + Send + 'static)
) -> Option<InternalBacktrace>

impl ChainedError for Error