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#![feature(proc_macro_tracked_env)]
extern crate proc_macro;
use proc_macro::TokenStream;
use proc_macro::tracked_env::var;
#[proc_macro]
pub fn generate_const(input: TokenStream) -> TokenStream {
let the_const = match var("THE_CONST") {
Ok(x) if x == "12" => {
"const THE_CONST: u32 = 12;"
}
_ => {
"const THE_CONST: u32 = 0;"
}
};
let another = if var("ANOTHER").is_ok() {
"const ANOTHER: u32 = 1;"
} else {
"const ANOTHER: u32 = 2;"
};
format!("{the_const}{another}").parse().unwrap()
}
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