renderSlice

fn renderSlice(
    r: *Render,
    slice_node: Ast.Node.Index,
    slice: Ast.full.Slice,
    space: Space,
) Error!void {
    const tree = r.tree;
    const space_around_dots = nodeCausesSliceOpSpace(tree.nodeTag(slice.ast.start)) or
        if (slice.ast.end.unwrap()) |end| nodeCausesSliceOpSpace(tree.nodeTag(end)) else false;
    const after_start_space: Space = if (space_around_dots) .space else .none;
    const before_sentinel_space: Space = if (slice.ast.sentinel != .none) .space else .none;
    const after_dots_space: Space = if (slice.ast.end != .none)
        if (space_around_dots) .maybe_space else .none
    else
        before_sentinel_space;

    try renderExpression(r, slice.ast.sliced, .none);
    try renderToken(r, slice.ast.lbracket, .none); // lbracket

    const start_last = tree.lastToken(slice.ast.start);
    try renderExpression(r, slice.ast.start, after_start_space);
    try renderToken(r, start_last + 1, after_dots_space); // ellipsis2 ("..")

    if (slice.ast.end.unwrap()) |end| {
        try renderExpression(r, end, before_sentinel_space);
    }

    if (slice.ast.sentinel.unwrap()) |sentinel| {
        try renderToken(r, tree.firstToken(sentinel) - 1, .none); // colon
        try renderExpression(r, sentinel, .none);
    }

    try renderToken(r, tree.lastToken(slice_node), space); // rbracket
}