ServiceFactoryFileGenerator.kt
/*
* Copyright 2022 The Android Open Source Project
*
* 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.
*/
package androidx.privacysandbox.tools.core.generator
import androidx.privacysandbox.tools.core.model.AnnotatedInterface
import androidx.privacysandbox.tools.internal.GeneratedPublicApi
import com.squareup.kotlinpoet.AnnotationSpec
import com.squareup.kotlinpoet.ClassName
import com.squareup.kotlinpoet.FileSpec
import com.squareup.kotlinpoet.FunSpec
import com.squareup.kotlinpoet.ParameterSpec
import com.squareup.kotlinpoet.TypeSpec
class ServiceFactoryFileGenerator(private val generateStubs: Boolean = false) {
fun generate(service: AnnotatedInterface): FileSpec =
FileSpec.builder(service.type.packageName, factoryName(service)).build {
addCommonSettings()
addType(generateFactory(service))
}
private fun generateFactory(service: AnnotatedInterface) =
TypeSpec.objectBuilder(factoryName(service)).build {
if (generateStubs) {
addAnnotation(GeneratedPublicApi::class)
}
addFunction(generateFactoryFunction(service))
}
private fun generateFactoryFunction(service: AnnotatedInterface) =
FunSpec.builder("wrapTo${service.type.simpleName}").build {
addParameter(ParameterSpec("binder", SpecNames.iBinderClass))
returns(ClassName(service.type.packageName, service.type.simpleName))
if (generateStubs) {
addAnnotation(
AnnotationSpec.builder(Suppress::class).addMember("%S", "UNUSED_PARAMETER")
.build()
)
addStatement("throw RuntimeException(%S)", "Stub!")
} else {
addStatement(
"return %T(%T.Stub.asInterface(binder))",
service.clientProxyNameSpec(), service.aidlInterfaceNameSpec()
)
}
}
private fun factoryName(service: AnnotatedInterface) = "${service.type.simpleName}Factory"
}