i-slint-compiler 1.18.0

// Copyright © 2026 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>, author Nathan Collins <nathan.collins@kdab.com>
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-2.0 OR LicenseRef-Slint-Software-3.0

// Verifies that the same-interface and member-collision checks are unified across self- and
// child-targeted `implement` statements, not just checked within each group separately.

interface I {
    in-out property <bool> value;
}

interface J {
    in-out property <bool> value;
}

component ChildA { }

export component SelfChildSameInterface {
    implement I <=> self;
    implement I <=> child;
//  >                    <error{'I' is implemented multiple times}

    in-out property <bool> value;

    child := ChildA { }
}

export component SelfSelfSameInterface {
    implement I <=> self;
    implement I <=> self;
//  >                   <error{'I' is implemented multiple times}

    in-out property <bool> value;
}

export component SelfSelfMemberConflict {
    implement I <=> self;
    implement J <=> self;
//            ><error{'value' occurs in 'J' and 'I'}

    in-out property <bool> value;
}

export component SelfChildMemberConflict {
    implement I <=> self;
    implement J <=> child;
//            ><error{'value' occurs in 'J' and 'I'}

    in-out property <bool> value;

    child := ChildA { }
}