//! # Binary types

use shiny_arena::make_comb;

use crate::ptr;

make_comb! {
    /// Type with additionally equipped ID.
    pub struct Field {
        pub ty: ptr::Ty,
        pub id: ptr::Id,
    }

    /// Product type. Pretty much just `lhs_ty * rhs_ty`.
    /// The following properties must be upheld:
    ///
    /// 1. lhs * rhs = rhs * lhs          <- commutativity
    /// 2. (a * b) * c = a * (b * c)      <- associativity
    pub struct Prod {
        pub lhs: ptr::Ty,
        pub rhs: ptr::Ty,
    }

    /// Sum type. Pretty much just `lhs_ty + rhs_ty`.
    /// The following properties must be upheld:
    ///
    /// 1. lhs + rhs = rhs + rhs          <- commutativity
    /// 2. (a + b) + c = a + (b + c)      <- associativity
    pub struct Sum {
        pub lhs: ptr::Ty,
        pub rhs: ptr::Ty,
    }
}