kqito / tiny-thiserror

A Rust error handling library created for learning procedural macros

tiny-thiserror Crate

tiny-thiserror is a Rust error handling library created for learning procedural macros (unpublished). It's a self-made crate inspired by the thiserror crate, enabling easy definition of error types and automatic generation of error messages. However, its features are quite limited.

Important

This library is created for learning purposes and its features are limited. For serious projects, we recommend using more mature libraries (such as thiserror crate and others).

Main Features

• Automatic derivation of error types with #[derive(Error)] attribute
• Automatic generation of error messages with #[error("message")] attribute

Usage Example

use tiny_thiserror::Error;

#[derive(Error, Debug)]
pub enum ErrorAttr {
    #[error("Unknown error")]
    Unknown,
    #[error("Invalid birth {0}/{1}/{2}")]
    InvalidBirth(u16, u8, u8),
    #[error("Invalid name {first} {last}")]
    InvalidName {
        first: String,
        middle: String,
        last: String,
    },
}

By defining error types as above, you can automatically derive error types and generate error messages.