KotlinDefaultMethodDelegateBinder.kt
/*
* Copyright 2020 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.room.solver
import androidx.room.compiler.codegen.CodeLanguage
import androidx.room.compiler.codegen.XClassName
import androidx.room.compiler.processing.XType
import androidx.room.compiler.processing.isVoid
import androidx.room.ext.DEFAULT_IMPLS_CLASS_NAME
import androidx.room.vo.KotlinDefaultMethodDelegate
/**
* Method binder that delegates to concrete DAO function in a Kotlin interface, specifically to
* a function where the implementation is in the DefaultImpl Kotlin generated class.
*
* @see [KotlinDefaultMethodDelegate]
*/
object KotlinDefaultMethodDelegateBinder {
fun executeAndReturn(
daoName: XClassName,
daoImplName: XClassName,
methodName: String,
returnType: XType,
parameterNames: List<String>,
scope: CodeGenScope
) {
check(scope.language == CodeLanguage.JAVA)
scope.builder.apply {
val params = mutableListOf<Any>()
val format = buildString {
if (!returnType.isVoid()) {
append("return ")
}
append("%T.%L.%L(%T.this")
params.add(daoName)
params.add(DEFAULT_IMPLS_CLASS_NAME)
params.add(methodName)
params.add(daoImplName)
parameterNames.forEach {
append(", %L")
params.add(it)
}
append(")")
}
addStatement(format, *params.toTypedArray())
}
}
}