Trait ResultExt 

pub trait ResultExt<T> {
    // Required methods
    fn with_path(self, path: impl AsRef<Path>) -> Result<T>;
    fn with_hint(self, hint: impl Display) -> Result<T>;
    fn context(self, msg: impl Display) -> Result<T>;
}

Extension trait for adding context to Result types.

This trait provides convenient methods for enriching errors with additional context like file paths or helpful hints.

Required Methods

fn with_path(self, path: impl AsRef<Path>) -> Result<T>

Add a file path to the error context.

Example

let path = Path::new("non_existent_file.txt");
std::fs::read_to_string(path)
    .with_path(path)?;

fn with_hint(self, hint: impl Display) -> Result<T>

Add a helpful hint to the error context.

Example

fn parse_config(content: &str) -> Result<()> {
    Err(CliError::Custom("parsing failed".into()))
}
let content = r#"{ "key": "value" }"#;
parse_config(&content)
    .with_hint("Check for trailing commas in JSON")?;

fn context(self, msg: impl Display) -> Result<T>

Convert to a custom error message.

Example

fn operation() -> Result<()> {
    Err(CliError::Custom("something went wrong".into()))
}
operation()
    .context("Failed to initialize bundler")?;

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<CliError>> ResultExt<T> for Result<T, E>

fn with_path(self, path: impl AsRef<Path>) -> Result<T>

fn with_hint(self, hint: impl Display) -> Result<T>

fn context(self, msg: impl Display) -> Result<T>

Implementors