Macro malachite_base::lex_custom_tuples

macro_rules! lex_custom_tuples {
    (
        ($($vis:tt)*),
        $exhaustive_struct: ident,
        $out_t: ty,
        $nones: expr,
        $unwrap_tuple: ident,
        $exhaustive_fn: ident,
        $([$t: ident, $it: ident, $xs: ident, $([$i: tt, $x: ident]),*]),*
    ) => { ... };
}

Defines custom lexicographic tuple generators.

You can define custom tuple generators like lex_triples_xxy in your program using the code below.

See usage examples here.

use malachite_base::iterators::iterator_cache::IteratorCache;
use malachite_base::lex_custom_tuples;

fn unwrap_triple<X, Y, Z>((a, b, c): (Option<X>, Option<Y>, Option<Z>)) -> (X, Y, Z) {
    (a.unwrap(), b.unwrap(), c.unwrap())
}

lex_custom_tuples! {
    (pub),
    LexTriplesXXY,
    (X, X, Y),
    (None, None, None),
    unwrap_triple,
    lex_triples_xxy,
    [X, I, xs, [0, x_0], [1, x_1]],
    [Y, J, ys, [2, y_2]]
}
lex_custom_tuples!(
    (pub),
    LexTriplesXYX,
    (X, Y, X),
    (None, None, None),
    unwrap_triple,
    lex_triples_xyx,
    [X, I, xs, [0, x_0], [2, x_2]],
    [Y, J, ys, [1, y_1]]
);
lex_custom_tuples!(
    (pub),
    LexTriplesXYY,
    (X, Y, Y),
    (None, None, None),
    unwrap_triple,
    lex_triples_xyy,
    [X, I, xs, [0, x_0]],
    [Y, J, ys, [1, y_1], [2, y_2]]
);