/*
 * Copyright (c) 2023 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

declare function print(str:any):string;

// one signature but no body
class C {
    constructor() {}

    foo?(): string;

    bar(): string {
        return "test one signature but no body";
    }
}

let c = new C();
print(c.bar());

// multi-signatures but one body
class D {
    constructor() {}

    foo?(a: string): string;

    foo?(a: string): string {
        return a;
    }

    foo?(a: string, b?: string): string;

    bar(): string {
        return "test multi-signatures but one body";
    }
}

let d = new D();
print(d.foo!("D"));
print(d.bar());

// multi-signature but no body.
class E {
    constructor() {}

    foo?(): string;

    foo?(a: string): string;

    foo?(a: string, b: string): string;

    bar(): string {
        return "test multi-signatures but no body";
    }
}

E.prototype.foo = function(): string {
    return "E";
}

let e = new E();
print(e.foo!());
print(e.bar());