1 /*
2  * Copyright (C) 2022 The Dagger Authors.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package dagger.functional.kotlinsrc.membersinject
18 
19 import dagger.Component
20 import dagger.Module
21 import dagger.Provides
22 import javax.inject.Inject
23 
24 /**
25  * This exhibits a regression case, that albeit weird, is valid according to the JSR 330 spec. JSR
26  * 330 specifies a rough ordering by which members should be injected, and it is possible to rely on
27  * such ordering. When members injecting [Subtype], field injection is guaranteed to be performed on
28  * [Base] first. The binding for `@FirstToString` in [ ][OrderingModule.provideToString] relies on
29  * this ordering, and thus uses the value in [ ][Base.first] to satisfy the binding.
30  */
31 class MembersInjectionOrdering {
32   open class Base {
33     @Inject lateinit var first: First
34   }
35 
36   class Subtype : Base() {
37     @Inject lateinit var firstToString: String
38   }
39 
40   @Module
41   class OrderingModule(private val subtype: Subtype) {
provideToStringnull42     @Provides fun provideToString(): String = subtype.first.toString()
43   }
44 
45   @Component(modules = [OrderingModule::class])
46   interface TestComponent {
47     fun inject(subtype: Subtype)
48   }
49 
50   class First @Inject constructor()
51 }
52