Trait ErrorContext 

pub trait ErrorContext<T> {
    // Required methods
    fn context(self, message: impl Into<String>) -> Result<T>;
    fn with_context<F, M>(self, f: F) -> Result<T>
       where F: FnOnce() -> M,
             M: Into<String>;
}

Extension trait for adding context to errors.

Required Methods

fn context(self, message: impl Into<String>) -> Result<T>

Add context to an error.

Errors

Returns Err if the original value was Err, wrapping it in an Internal error with the given message.

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

where F: FnOnce() -> M, M: Into<String>,

Add context lazily (only computed on error).

Errors

Returns Err if the original value was Err, wrapping it in an Internal error with the context message.

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, E: Into<FraiseQLError>> ErrorContext<T> for Result<T, E>

fn context(self, message: impl Into<String>) -> Result<T>

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

where F: FnOnce() -> M, M: Into<String>,

Implementors