Struct RCondition 

pub struct RCondition<E: Error>(pub E);

Structured error wrapper that preserves the std::error::Error cause chain.

When displayed, formats the error message with its full source chain:

top-level message
  caused by: middle error
  caused by: root cause

Implements From<E> so it works with ? and .map_err(RCondition).

Example

use miniextendr_api::condition::RCondition;
use std::num::ParseIntError;

#[miniextendr]
fn parse_number(s: &str) -> Result<i32, RCondition<ParseIntError>> {
    s.parse::<i32>().map_err(RCondition)
}

Tuple Fields

0: E

Implementations

impl<E: Error> RCondition<E>

pub fn into_inner(self) -> E

Get the inner error.

pub fn rust_type_name(&self) -> &'static str

Get the Rust type name of the wrapped error (for programmatic matching).

pub fn cause_chain(&self) -> Vec<String>

Collect the full cause chain as a Vec<String>.

Trait Implementations

impl<E: Error> Debug for RCondition<E>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<E: Error> Display for RCondition<E>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<E: Error> From<E> for RCondition<E>

fn from(err: E) -> Self

Converts to this type from the input type.