Trait Context 

pub trait Context<T, Source, Middle, Target, C>: Sized
where
    Source: Error + Into<Middle>,
    Middle: Error,
    Target: Error2,
    C: ErrorWrap<Middle, Target>,
{
    // Required methods
    fn context_and_location(
        self,
        context: C,
        location: Location,
    ) -> Result<T, Target>;
    fn with_context_and_location<F>(
        self,
        f: F,
        location: Location,
    ) -> Result<T, Target>
       where F: FnOnce() -> C;

    // Provided methods
    fn context(self, context: C) -> Result<T, Target> { ... }
    fn with_context<F>(self, f: F) -> Result<T, Target>
       where F: FnOnce() -> C { ... }
}

Required Methods

fn context_and_location( self, context: C, location: Location, ) -> Result<T, Target>

fn with_context_and_location<F>( self, f: F, location: Location, ) -> Result<T, Target>

where F: FnOnce() -> C,

Provided Methods

fn context(self, context: C) -> Result<T, Target>

fn with_context<F>(self, f: F) -> Result<T, Target>

where F: FnOnce() -> C,

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<T, Source, Middle, Target, C> Context<T, Source, Middle, Target, C> for Result<T, Source>

where Source: Error + Into<Middle>, Middle: Error, Target: Error2, C: ErrorWrap<Middle, Target>,

fn context_and_location( self, context: C, location: Location, ) -> Result<T, Target>

fn with_context_and_location<F>( self, f: F, location: Location, ) -> Result<T, Target>

where F: FnOnce() -> C,

impl<T, Target, C> Context<T, NoneError, NoneError, Target, C> for Option<T>

where Target: Error2, C: ErrorWrap<NoneError, Target>,

fn context_and_location( self, context: C, location: Location, ) -> Result<T, Target>

fn with_context_and_location<F>( self, f: F, location: Location, ) -> Result<T, Target>

where F: FnOnce() -> C,

Implementors

impl<T, Source, Middle, Target, C> Context<T, Source, Middle, Target, C> for Source

where Source: Error + Into<Middle>, Middle: Error, Target: Error2, C: ErrorWrap<Middle, Target>,