Trait IntoContext

Source

pub trait IntoContext {
    // Required method
    fn into_ctx<C2: ThinContext>(self) -> Report<C2>;
}

Expand description

Trait for converting error reports from one context type to another.

Required Methods§

Source

fn into_ctx<C2: ThinContext>(self) -> Report<C2>

Convert this error report to use a different context type.

This method transforms a Report<C> into a Report<C2> with C2 being a ThinContext. When the std::any::TypeId of C and C2 is the same, only a Location is attached.

§Example

use bigerror::{IntoContext, ThinContext, Report, NotFound, ResultIntoContext, DbError};

#[derive(ThinContext)]
struct ServiceError;

fn fetch_user_data() -> Result<String, Report<ServiceError>> {
    // 1. Simulate database operation that returns `NotFound`
    let db_result: Result<String, Report<NotFound>> =
        Err(NotFound::attach_kv("user_id", 123));

    // 2. Convert `NotFound` to `DbError`
    let database_result: Result<String, Report<DbError>> =
        db_result.into_ctx();

    // 3. Convert `DbError` into `ServiceError`
    database_result.into_ctx()
}

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.

Implementors§

Source §

IntoContext