slint/internal/compiler/tests/syntax/lookup/callback_alias3.slint

// Copyright © SixtyFPS GmbH <info@slint.dev>
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-1.1 OR LicenseRef-Slint-commercial

Sub := Rectangle {
    callback compute(int) -> int;
    callback compute_alias <=> compute;
}

export Xxx := Rectangle {

    foo := Rectangle {
        callback hello(int) -> int;
    }

    callback colr <=> foo.background;
//  ^error{Binding to callback 'colr' must bind to another callback}
    property propr <=> foo.hello;
//  ^error{Could not infer type of property 'propr'}

    callback loop1 <=> loop2;
    callback loop3 <=> loop1;
//                     ^error{Unknown unqualified identifier 'loop1'}
//  ^^error{Binding to callback 'loop3' must bind to another callback}
    callback loop2 <=> loop3;

    Sub {
        compute_alias(a, b, c) => {
            debug(b); // FIXME: one should actually check that the connection has the right amount of arguments
//                ^error{Unknown unqualified identifier 'b'}
            return "hello";
//          ^error{Cannot convert string to int}
        }
    }
}