KspVoidType.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.compiler.processing.ksp
import androidx.room.compiler.processing.XNullability
import com.google.devtools.ksp.symbol.KSType
import com.squareup.javapoet.TypeName
/**
* Representation of `void` in KSP.
*
* By default, kotlin.Unit is a valid type in jvm and does not get auto-converted to void (unlike
* kotlin.Int etc). For those cases, KspProcessingEnv uses this type to properly represent java
* void in Kotlin so that Room can generate the correct java code.
*/
internal class KspVoidType(
env: KspProcessingEnv,
ksType: KSType,
val boxed: Boolean,
jvmTypeResolver: KspJvmTypeResolver?
) : KspType(env, ksType, jvmTypeResolver) {
override fun resolveTypeName(): TypeName {
return if (boxed || nullability == XNullability.NULLABLE) {
TypeName.VOID.box()
} else {
TypeName.VOID
}
}
override fun boxed(): KspType {
return if (boxed) {
this
} else {
KspVoidType(
env = env,
ksType = ksType,
boxed = true,
jvmTypeResolver = jvmTypeResolver
)
}
}
override fun copyWithNullability(nullability: XNullability): KspType {
return KspVoidType(
env = env,
ksType = ksType.withNullability(nullability),
boxed = boxed || nullability == XNullability.NULLABLE,
jvmTypeResolver = jvmTypeResolver
)
}
override fun copyWithJvmTypeResolver(jvmTypeResolver: KspJvmTypeResolver): KspType {
return KspVoidType(
env = env,
ksType = ksType,
boxed = boxed,
jvmTypeResolver = jvmTypeResolver
)
}
}