env_derive 0.1.0

env_derive is macro of env_rs.
Documentation 
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mod env;
mod field;
mod utils;

use proc_macro::TokenStream;
use syn::{parse_macro_input, DeriveInput};

use darling::FromDeriveInput;

use crate::env::Env;

#[proc_macro_derive(FromEnv, attributes(env))]
pub fn derive(input: TokenStream) -> TokenStream {
    Env::from_derive_input(&parse_macro_input!(input as DeriveInput))
        .unwrap()
        .expand()
        .unwrap_or_else(|e| e.to_compile_error())
        .into()
}