// Serializable struct constants are IMMUTABLE GLOBALS (one storage, no
// per-use rebuild): literal fields, const-EXPRESSION fields (`K + 1`),
// another const's field (`LIT.r`), and a const array's element (`A[1]`)
// all serialize. The const is addressable (`@LIT`) and copies stay
// independent.

#import "modules/std.sx";

Color :: struct { r, g, b: i64; }
K :: 10;
A : [2]i64 : .[7, 8];
LIT  :: Color.{ r = 255, g = 0, b = 0 };
EXPR :: Color.{ r = K + 1, g = K * 2, b = A[1] };
REF  :: Color.{ r = LIT.r, g = 1, b = 2 };

main :: () {
    print("lit={} expr={} {} {} ref={}\n", LIT.r, EXPR.r, EXPR.g, EXPR.b, REF.r);
    p := @LIT;
    print("via-ptr={}\n", p.r);
    c := LIT;
    c.r = 9;
    print("copy={} const={}\n", c.r, LIT.r);
}