kago-macros 0.5.0

A macros for Kago.
Documentation 
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use crate::core;
use proc_macro2::TokenStream;
use quote::quote;
use std::ops::RangeInclusive;

pub fn impl_ougi(range: &RangeInclusive<u32>) -> TokenStream {
    let mut impls = Vec::new();
    let max = *range.end();
    for n_1 in range.clone() {
        for is_signed in [false, true] {
            let struct_name_1 = core::struct_name(n_1, is_signed);
            let flag_name_1 = core::feature_name(n_1, is_signed);
            if n_1 * 2 < max {
                // BitDouble
                let n_2 = n_1 * 2;
                let struct_name_2 = core::struct_name(n_2, is_signed);
                let flag_name_2 = core::feature_name(n_2, is_signed);
                impls.push(quote! {
                    #[cfg(all(feature = #flag_name_1, feature = #flag_name_2))]
                    impl ougi::BitDouble for #struct_name_1 {
                        type Double = #struct_name_2;
                        fn double(&self) -> Self::Double {
                            (*self).into()
                        }
                    }
                });
            }
            if n_1 % 2 == 0 {
                // BitHalf
                let n_2 = n_1 / 2;
                let struct_name_2 = core::struct_name(n_2, is_signed);
                let flag_name_2 = core::feature_name(n_2, is_signed);
                impls.push(quote! {
                    #[cfg(all(feature = #flag_name_1, feature = #flag_name_2))]
                    impl ougi::BitHalf for #struct_name_1 {
                        type Half = #struct_name_2;
                        fn half(&self) -> Option<Self::Half> {
                            (*self).try_into().ok()
                        }
                    }
                });
            }
        }
    }
    impls.into_iter().collect()
}