simple-error

Stripped down version of thiserror.

Overview

This repo contains the following crates:

• simple-error: Primitive crate for interpolating values into an interpolated string.
• simple-error-derive: Stripped down version of thiserror::Error with support for only interpolating enum values (never static values or with custom functions transformation).

Usage

use std::fmt::Display;use simple_error_derive::SimpleError;#[derive(Debug,SimpleError)]enumSomeError<'a>{#[error("Unit error")]Unit,#[error("Unnamed error: {0:?}, {1}, 0x{2:0x}")]Unnamed(State,&'astr,i32),#[error("Named error: {message}")]Named{message:String},}#[derive(Debug)]structState{code:i32,}fnunnamed_error() -> Result<(),SomeError<'static>>{Err(SomeError::Unnamed(State{code:2},"state error",32))}fnnamed_error() -> Result<(),SomeError<'static>>{Err(SomeError::Named{message:"critical error".to_string(),})}assert_eq!(SomeError::Unit.to_string(),"Unit error");assert_eq!(
unnamed_error().unwrap_err().to_string(),"Unnamed error: State { code: 2 }, state error, 0x20");assert_eq!(
named_error().unwrap_err().to_string(),"Named error: critical error");