Macro define_errors 

macro_rules! define_errors {
    (
    $(
      $code:expr => [
        $( $name:ident ),+ $(,)?
      ]
    ),+ $(,)?
  ) => { ... };
}

Batch defines multiple typed errors under the same error code.

This macro allows you to define multiple error types that share the same error code, making it more convenient to organize related errors. Each error type automatically implements From for Error, allowing seamless conversion.

Syntax

define_errors! {
    ErrorCode::SomeCode => [
        ErrorType1,
        ErrorType2,
        ErrorType3,
    ],
    ErrorCode::AnotherCode => [
        ErrorType4,
    ],
}

Examples

use lxy::{define_errors, error::{ErrorCode, Result, Error}};

define_errors! {
    ErrorCode::ResourceNotFound => [
        UserNotFound,
        ProjectNotFound,
        FileNotFound,
    ],
    ErrorCode::InvalidInput => [
        InvalidEmail,
        InvalidPassword,
    ],
}

Using with Direct Conversion

fn get_user(id: u32) -> Result<String> {
    if id == 0 {
        return Err(UserNotFound.into());
    }
    Ok("User found".to_string())
}

Using with Custom Messages

use lxy::{define_errors, error::{ErrorCode, Result, TypedError}};

define_errors! {
    ErrorCode::ResourceNotFound => [UserNotFound],
}

fn get_user(id: u32) -> Result<String> {
    if id == 0 {
        return Err(UserNotFound::error(format!("User {} not found", id)));
    }
    Ok("User found".to_string())
}