Macro xml_serde_enum 

macro_rules! xml_serde_enum {
    (
         $(#[$outer:meta])*
        $name:ident {
            $($f:ident => $s:literal,)*
        }
    ) => { ... };
}

A macro to help you create mappings between string values in XML and Rust enums.

For example, we can define a mapping like this:

use xmlserde::xml_serde_enum;
xml_serde_enum!{
    #[derive(Debug, Clone)]
    Gender{
        Male => "male",
        Female => "female",
    }
}

After expansion, you can find an enum is defined like this:

#[derive(Debug, Clone)]
pub enum Gender {
    Male,
    Female,
}

And string value of male will be deserialized as Gender::Male while female will be as Gender::Female. In the same way, Gender will be serialized as male of female.

Panic if the given string is out of male and female.