renderAsmOutput

fn renderAsmOutput(
    r: *Render,
    asm_output: Ast.Node.Index,
    space: Space,
) Error!void {
    const tree = r.tree;
    assert(tree.nodeTag(asm_output) == .asm_output);
    const symbolic_name = tree.nodeMainToken(asm_output);

    try renderToken(r, symbolic_name - 1, .none); // lbracket
    try renderIdentifier(r, symbolic_name, .none, .eagerly_unquote); // ident
    try renderToken(r, symbolic_name + 1, .space); // rbracket
    try renderToken(r, symbolic_name + 2, .space); // "constraint"
    try renderToken(r, symbolic_name + 3, .none); // lparen

    if (tree.tokenTag(symbolic_name + 4) == .arrow) {
        const type_expr, const rparen = tree.nodeData(asm_output).opt_node_and_token;
        try renderToken(r, symbolic_name + 4, .space); // ->
        try renderExpression(r, type_expr.unwrap().?, Space.none);
        return renderToken(r, rparen, space);
    } else {
        try renderIdentifier(r, symbolic_name + 4, .none, .eagerly_unquote); // ident
        return renderToken(r, symbolic_name + 5, space); // rparen
    }
}