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// Copyright 2019 LEXUGE
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

macro_rules! ops {
    (neg) => {
        impl<T: num_traits::One +  num_traits::CheckedNeg> std::ops::Neg for SCell<T> {
            type Output = Self;
            fn neg(mut self) -> Self::Output {
                self.data = self.data.checked_neg().unwrap_or_else(|| {self.error_tag = true; T::one()});
                SCell {
                    error_tag: self.error_tag,
                    data: self.data,
                }
          }
        }
    };
    ($op: tt, $fn: ident, $trait: ident) => {
        paste::item! {
            impl<T: num_traits::One + num_traits::[<Checked $trait>]> std::ops::[<$trait Assign>] for SCell<T> {
                fn [<$fn _assign>](&mut self, rhs: Self) {
                 self.data = self.data.[<checked_ $fn>](&rhs.data).unwrap_or_else(|| {self.error_tag = true; T::one()});
                    self.error_tag |= rhs.error_tag;
                }
            }
        }
        paste::item! {
            impl<T: One + num_traits::[<Checked $trait>]> $trait for SCell<T> {
                type Output = Self;
                fn $fn(mut self, rhs: Self) -> Self::Output {
                    self $op rhs;
                    self
                }
            }
        }
    }
}